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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 25. Отображено 25.
26-03-2014 дата публикации

Crayfish feed

Номер: CN103652406A
Автор: HU JINHANG
Принадлежит:

The invention relates to the technical field of aquaculture, and in particular relates to a crayfish feed which is prepared from the following raw materials in parts by weight: 20-25 parts of corn flour, 12-15 parts of soybean cake, 5-6 parts of wheat middling, 8-10 parts of wheat bran, 3-4 fish intestine powder, 2-3 parts of clam worm powder, 3-4 parts of freshwater shrimp powder, 5-6 parts of fresh soybean milk, 4-5 parts of pondweed, 2-3 parts of bone meal, 3-4 parts of fermented duck blood powder, 5-6 parts of alternanthera philoxeroide stem and leaf, 4-5 parts of bread crumb, 2-3 parts of sleeve-fish powder, a proper amount of salt and 4-5 parts of phagostimulant. The feed provided by the invention is completely accordant with the omnivorous characteristics of crayfish and contains multiple high-quality protein raw materials, the palatability of the feed can be improved because of the fishy smell of the raw materials such as the fish intestine powder, the clam worm powder and the sleeve-fish ...

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Номер записи: 1
17-12-2014 дата публикации

Novel busbar-free four-port bipolar DC-DC (direct current to direct current) converter

Номер: CN104218796A
Автор: YAO LIANGZHONG, XU XIAOHUI, LI YAN, YANG BO, CAO YUANZHI, LU JUNFENG, CAI XU, ZHU MIAO, ZHANG JIANWEN, MA JIANJUN, DING JIE, TAO YIBIN, LI GUANJUN, CUI HONGFEN, WANG DESHUN, ZHOU CHEN, LIU HUAN, YAN SHENGCHI, WANG ZHIBING, SUN WEI, HU JINHANG, FENG XINZHEN, WU JING, ZHU HONGBAO, LI YUELONG
Принадлежит:

The invention provides a novel busbar-free four-port bipolar DC-DC (direct current to direct current) converter which comprises an annular architecture. The annular architecture is formed by four converter unit groups in sequential connection; each converter unit group comprises two converter units in connection; each of two power electronic device branches of each converter unit comprises two power electronic devices in same-direction connection; junction points of the power electronic devices are connected through electric reactors. Compared with the prior art, the novel busbar-free four-port bipolar DC-DC converter has a power bidirectional flow capability and is applicable to different operating conditions of a direct-current system, power conversion coefficient is decreased, and power conversion efficiency of the converter is improved.

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Номер записи: 2
06-06-2023 дата публикации

Airway spray cryoablation system

Номер: CN116211440A
Автор: SONG CHAO, XING ZONGJIANG, HU JINHANG, CHEN XIAOYI
Принадлежит:

The invention relates to an airway spray cryoablation system, comprising: a cryogenic medium reservoir; the heat exchange system comprises a thermal refrigerator arranged in the freezing medium storage device; the connecting pipeline comprises a first connecting pipeline, the near end of the first connecting pipeline is connected with a far-end pipeline of the air source, and the far end of the first connecting pipeline is connected with a near-end pipeline of the thermal refrigerator; the near end of the second connecting pipeline is connected with a far-end pipeline of the thermal refrigerator; the lifting system comprises a lifting power device; the lifting assembly is connected with the lifting power device and used for controlling the contact area of the refrigerating device and the freezing medium in the freezing medium storage device. The control system comprises a temperature monitor arranged on the second connecting pipeline; the liquid level monitoring device is arranged on the ...

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Номер записи: 3
24-06-2015 дата публикации

Current control method and device for off-grid energy storage converter

Номер: CN104734121A
Автор: ZONG JIN, BAI KAI, FENG XINZHEN, TAO YIBIN, LI NA, LI ZHI, ZHANG YANGFAN, YANG WEIXIN, HU JINHANG, LI GUANJUN, ZHOU CHEN, LIU HUAN, YU HAOJIE
Принадлежит:

The invention provides a current control method and device for an off-grid energy storage converter and relates to the technical field of power systems. The method includes the steps of obtaining an IGBT side current and a micro-grid side current through current sampling; judging whether the IGBT side current and the micro-grid side current are smaller than a first preset current limit value and a second preset current limit value respectively; determining that an impact load has access to the off-grid energy storage converter and obtaining the time span of impact load access if the IGBT side current is larger than or equal to the first current limit value or the micro-grid side current is larger than or equal to the second current limit value; determining a first protection strategy of the off-grid energy storage converter according to the time span, and operating the off-grid energy storage converter according to the protection strategy to control an impact current of the off-grid energy ...

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Номер записи: 4
16-02-2011 дата публикации

Traveling crane position tracking device based on radio frequency identification

Номер: CN0101973488A
Автор: QI LI, WANGPING QIAN, SHIXIONG FANG, YANPING QIAN, JINHANG HU, SIQIAN JIAO, LI QI, QIAN WANGPING, FANG SHIXIONG, QIAN YANPING, HU JINHANG, JIAO SIQIAN
Принадлежит:

The invention discloses a traveling crane position tracking device based on radio frequency identification. The traveling crane position tracking device comprises a main controller, a position detection device and a position calibrating device, wherein a rotary encoder is adopted by the position detection device, and the position detection device is installed on a main shaft of a traveling crane running motor and used for detecting accurate information of traveling crane displacement; a super-high frequency RFID (Radio Frequency Identification Device) reader and an RFID electronic tag are adopted by the position calibrating device, wherein the RFID reader is fixed on a traveling crane body, and the RFID electronic tag is packaged and then fixed on a bracket arranged on a traveling crane track; and the position detection device and the position calibrating device are both converted through a serial port communication interface and a serial port of the main controller and connected with an ...

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Номер записи: 5
27-08-2014 дата публикации

Series type tidal current controller suitable for direct current power transmission

Номер: CN104009463A
Автор: CAO YUANZHI, YAO LIANGZHONG, WU FUBAO, YANG BO, LU JUNFENG, TAO YIBIN, WANG DESHUN, ZHOU CHEN, LIU HUAN, YAN SHENGCHI, WANG ZHIBING, SUN WEI, XU XIAOHUI, HU JINHANG, CUI HONGFEN, FENG XINZHEN, ZHU HONGBAO
Принадлежит:

The invention provides a series type tidal current controller suitable for direct current power transmission. The controller comprises a bi-directional DC/DC converter and an H bridge converter connected with the bi-directional DC/DC converter in series. The bi-directional DC/DC converter is connected into a high-voltage direct current power transmission network through direct current breakers, one output branch circuit of the H bridge converter is sequentially connected into the high-voltage direct current power transmission network through a reactor and a direct current fuse protector, and the other output branch circuit of the H bridge converter is directly connected into the high-voltage direct current power transmission network. Compared with the prior art, the series type tidal current controller suitable for the direct current power transmission can control fixed voltage connected inside a direct current transmission line in series in a linear mode when operating in a voltage mode ...

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Номер записи: 6
15-04-2015 дата публикации

Concurrent control process voltage compensating method of energy storage system at tail end of power distribution network

Номер: CN104518511A
Автор: LI QUN, YUAN XIAODONG, LI QIANG, ZHANG XIANGWEN, LIU DAN, LYU ZHENHUA, WU SHENGJUN, TAO YIBIN, LI GUANJUN, HU JINHANG, ZHOU CHEN, YU HAOJIE, FENG XINZHEN, CAO YUANZHI, LIU HUAN, YANG BO, HE WEIGUO, YAN SHENGCHI
Принадлежит:

The invention discloses a concurrent control process voltage compensating method of an energy storage system at the tail end of the power distribution network. The concurrent control process voltage compensating method includes steps of S01, disconnecting network combination point switches and operating the energy storage system in a V/F voltage source mode in the off-network state; S02, detecting whether terminal voltage of the power distribution network is recovered or not, if yes, acquiring the terminal voltage of the power distribution network, and calculating to obtain three-phase voltage amplitude average Ugrid; S03, acquiring microgrid terminal voltage of the network combination point switches and calculating to obtain three-phase voltage amplitude average value Umicro; acquiring in-place terminal voltage of the energy storage system and calculating to obtain three-phase amplitude average value Uabc; S04, compensating voltage reference to obtain voltage control reference value Uref ...

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Номер записи: 7
09-05-2023 дата публикации

Method and system for evaluating state of charge of ship battery

Номер: CN116087817A
Автор: HU JINHANG, MIAO YA, CHEN JUN
Принадлежит:

The invention relates to the technical field of battery pack maintenance, in particular to a ship battery charge state evaluation method and system, and the method comprises the steps: S1, obtaining a charge state estimation value and an operation state of a to-be-evaluated battery pack; s2, matching a plurality of pre-divided battery pack state intervals according to the charge state estimated values, wherein the charge state values corresponding to the intervals are gradually increased in sequence; and S3, according to the battery pack state interval and the operation state, calling a corresponding correction method to generate a charge state evaluation result corresponding to the to-be-evaluated battery pack. The method has the beneficial effects that for the problem of possible deviation in calculation of the state of charge of the battery in the prior art, the state of charge estimated value of the battery pack to be evaluated is extracted in advance and the state interval of the battery ...

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Номер записи: 8
26-03-2014 дата публикации

Freshwater shrimp feed

Номер: CN103652403A
Автор: HU JINHANG
Принадлежит:

The invention relates to the technical field of aquaculture and specifically relates to a freshwater shrimp feed. The feed is prepared from the following raw materials in parts by weight: 8-10 parts of millet bran, 8-10 parts of barley bran, 10-12 parts of bean cake, 10-12 parts of rye, 6-8 parts of potato powder, 15-18 parts of corns, 5-6 parts of fried peanut powder, 6-8 parts of cedar moss powder, 2-3 parts of meat and bone meal, 2-3 parts of imported fish meal, 2-3 parts of lamp liver powder, 4-5 parts of black tea residue, 2-3 parts of fermented bean curd, 3-4 parts of dried-powder of housefly larvae, 2-3 parts of egg shell powder, 6-8 parts of water hyacinth, 2-3 parts of garlic juice, a proper amount of salt and 4-5 parts of phagostimulant. The feed prepared in the invention is rich in material type and good in palatability, satisfies the omnivorous characteristics of the freshwater shrimps, and contains various fine protein raw materials, so that the fed freshwater shrimps are quick ...

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Номер записи: 9
26-02-2014 дата публикации

Mixed-liquid-flow energy-storage system with reactive compensation function

Номер: CN103606942A
Автор: CAO YUANZHI, ZHOU CHEN, YAN SHENGCHI, TAO YIBIN, LI GUANJUN, LIU HUAN, HU JINHANG, FENG XINZHEN, SU GUANGNING, ZHANG YU
Принадлежит:

The invention provides a mixed-liquid-flow energy-storage system with a reactive compensation function. The system includes a liquid-flow battery energy-storage system and a supercapacitor group, which are connected through a DC circuit breaker group. The supercapacitor group, a bidirectional DC/AC converter, a boosting transformer, an AC circuit breaker and an AC power grid are connected in order. The liquid-flow battery energy-storage system includes an all-vanadium liquid-flow battery, a sodium-sulfur battery and a zinc-bromine battery. The supercapacitor group is formed by serial or parallel connection of single-body supercapacitors. The single-body supercapacitors are double-electric-layer supercapacitors or electrochemical supercapacitors. Compared with the prior art, the mixed-liquid-flow energy-storage system with the reactive compensation function is capable of improving effectively stability and reliability of power supplying a distributed power generation system.

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Номер записи: 10
15-04-2015 дата публикации

MMC topological structure based hybrid energy storage system

Номер: CN104518518A
Автор: YUAN XIAODONG, CAO YUANZHI, LI QUN, LI QIANG, LIU DAN, LYU ZHENHUA, TAO YIBIN, LI GUANJUN, HU JINHANG, ZHOU CHEN, YU HAOJIE, FENG XINZHEN, LIU HUAN, YANG BO, HE WEIGUO, YAN SHENGCHI
Принадлежит:

The invention discloses an MMC topological structure based hybrid energy storage system which comprises a plurality of chemical energy storage batteries, a plurality of capacitors and an MMC topological structure based converter. Each chemical energy storage battery and each capacitor are connected with the converter through submodules, and one end of each submodule is connected with the corresponding chemical energy storage battery or the corresponding capacitor while the other end of each submodule is serially connected in the converter. Preferably, each submodule is a half-bridge submodule consisting of two fully-controlled power components and a capacitor, wherein the two fully-controlled power components are connected serially and then parallelly connected with the capacitor. More preferably, each submodule is a full-bridge submodule consisting of four fully-controlled power components and a capacitor, wherein the four fully-controlled power components are connected serially pairwise ...

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Номер записи: 11
18-04-2023 дата публикации

Sliding mode control method and system for propulsion frequency converter

Номер: CN115987156A
Автор: HU JINHANG, MIAO YA, YONG DINGTAO, WANG LEI, TIAN YU
Принадлежит:

The invention provides a sliding-mode control method and system for a propulsion frequency converter, and relates to the technical field of ship frequency converter control, and the method comprises the steps: constructing a sliding-mode rotating speed controller according to a preset speed change index reaching law, and then controlling the propulsion frequency converter to accelerate to a specified rotating speed through the sliding-mode rotating speed controller, a speed change index reaching law, s is a sliding mode surface function, kgt; 0, epsilon gt; 0 and alpha are constants; constructing a load torque observer by taking the angular velocity and the load torque of the propulsion frequency converter as observation objects and taking the observation value of the load torque as output, and then observing the load torque through the load torque observer to obtain a load torque observation value; the sliding mode rotating speed controller controls the propulsion frequency converter to ...

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Номер записи: 12
24-09-2014 дата публикации

Micro grid rapid grid connection method based on three-phase independent regulation

Номер: CN104065104A
Автор: TAO YIBIN, DING JIE, WU FUBAO, YANG BO, CHEN BIN, LI GUANJUN, ZHENG GAO, SANG BINGYU, WANG DESHUN, HE WEIGUO, HU JINHANG, FENG XINZHEN, LIU HUAN, YU BIN, YAN SHENGCHI, CAO YUANZHI, ZHOU CHEN, YU HAOJIE
Принадлежит:

The invention provides a micro grid rapid grid connection method based on three-phase independent regulation. The method comprises the following steps: (1) a grid connection protection controller of a micro grid and a distribution network sends the collected three-phase voltage value of a distribution network side and the state signal of a grid connection circuit breaker to a master power supply controller of a micro grid side, (2) the master power supply controller uses a PI control algorithm to respectively adjust the active power, reactive power and phase parameter of each phase of the micro grid side, (3) the master power supply controller carries out real-time comparison of the voltage parameters of the distribution network side and the micro grid side, and if the comparison result satisfies the synchronous closing judgment condition of a power grid, a closing command is sent to the grid connection circuit breaker. Compared with the prior art, according to the micro grid rapid grid ...

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Номер записи: 13
06-08-2014 дата публикации

Method for controlling high-dynamic properties of high-power bidirectional DC/DC converters

Номер: CN103973105A
Автор: LI GUANJUN, TAO YIBIN, ZHOU CHEN, HU JINHANG, YANG BO, CAO YUANZHI, FENG XINZHEN, YU HAOJIE, WANG DESHUN, YU BIN, SANG BINGYU, YAN SHENGCHI, ZHU HONGBAO, LI YUELONG, YAO MENGYANG, WU TAO
Принадлежит:

The invention provides a method for controlling high-dynamic properties of high-power bidirectional DC/DC converters. The method includes steps of enabling a controller to receive constant-voltage control instructions and constant-voltage control instruction values and acquiring AD (analog-digital) sampled voltage feedback values; changing PI (proportion and integration) control parameters of outer voltage loops when low fluctuating power is outputted by a DC/DC converter and determining current instructions outputted by closed voltage loops under PI control; changing PI parameters of the outer voltage loops according to voltage difference values when the DC/DC converter is subjected to high-power charge and discharge conversion, and outputting the current instructions; changing integration items of inner current loops according to state switching directions when working modes of the DC/DC converter are switched over; transmitting PWM (pulse width modulation) driving signals according to ...

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Номер записи: 14
23-06-2023 дата публикации

Ablation device for airway tissue

Номер: CN116269722A
Автор: SONG CHAO, XING ZONGJIANG, HU JINHANG, CHEN WENCHAO
Принадлежит:

The invention relates to an ablation device for airway tissue. The ablation device comprises an air source; a freezing medium reservoir; the heat exchange system comprises a thermal refrigerator arranged in the freezing medium storage device; the connecting pipeline comprises a first connecting pipeline, the near end of the first connecting pipeline is connected with a far-end pipeline of the air source, and the far end of the first connecting pipeline is connected with a near-end pipeline of the thermal refrigerator; the near end of the second connecting pipeline is connected with a far-end pipeline of the thermal refrigerator; the catheter comprises an air inlet pipe, and the near end of the air inlet pipe is connected with the far-end pipeline of the second connecting pipeline; the near end of the freezing probe is connected with the far-end pipeline of the air inlet pipe; the control system comprises an input regulator arranged on the first connecting pipeline; the freezing medium reserve ...

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Номер записи: 15
27-08-2014 дата публикации

Mobile energy storage system for dual power supply

Номер: CN104009490A
Автор: YAN SHENGCHI, ZHANG YU, SU GUANGNING, LIU SHU, YANG BO, TAO YIBIN, LI GUANJUN, YU BIN, SANG BINGYU, LIU HUAN, ZHOU CHEN, HU JINHANG, FENG XINZHEN, YU HAOJIE
Принадлежит:

The invention relates to a mobile energy storage system for dual power supply. The mobile energy storage system comprises an energy storage battery, an energy storage current converter cabinet, a direct current converter cabinet, a UPS, a first AC/DC switching power source, a first DC/DC switching power source, a second AC/DC switching power source and a second DC/DC switching power source. The output end of the energy storage battery is respectively connected to the input end of the first DC/DC switching power source and the input end of the second DC/DC switching power source. The output end of the first AC/DC switching power source and the output end of the first DC/DC switching power source are respectively connected with the input end of the energy storage current converter cabinet. The output end of the energy storage current converter cabinet is connected with the input end of the UPS, and the output end of the UPS is respectively connected with the input end of the first AC/DC switching ...

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Номер записи: 16
17-12-2014 дата публикации

Unipolar-bipolar convertible direct-current converter

Номер: CN104218805A
Автор: YAO LIANGZHONG, YANG BO, XU XIAOHUI, TAO YIBIN, CAO YUANZHI, LI GUANJUN, CAI XU, ZHU MIAO, ZHANG JIANWEN, MA JIANJUN, DING JIE, LU JUNFENG, LI YAN, CUI HONGFEN, WANG DESHUN, ZHOU CHEN, LIU HUAN, YAN SHENGCHI, WANG ZHIBING, SUN WEI, HU JINHANG, FENG XINZHEN, WU JING, ZHU HONGBAO, LI YUELONG
Принадлежит:

The invention provides a unipolar-bipolar convertible direct-current converter comprising a unipolar side power module and a bipolar side power module connected to two sides of a medium-frequency transformer. The unipolar side power module comprises a first power electronic device full-bridge circuit, a voltage stabilizing capacitor and a direct-current breaker; two ends of the power electronic device full-bridge circuit are connected with the medium-frequency transformer; other two ends of the power electronic device full-bridge circuit are connected with a unipolar direct-current system; the bipolar side power module comprises a second power electronic device full-bridge circuit, a capacitor, a voltage stabilizing capacitor, a reactor and a direct-current breaker; two ends of the second power electronic device full-bridge circuit are connected with the medium-frequency transformer, and other two ends of the second power electronic device full-bridge circuit are connected with a bipolar ...

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Номер записи: 17
23-06-2023 дата публикации

Battery pack thermal runaway prediction method and system based on data fusion

Номер: CN116315189A
Автор: HU JINHANG, MIAO YA, DING WEI, CHEN JUN
Принадлежит:

The invention provides a battery pack thermal runaway prediction method and system based on data fusion, and the method comprises the steps: obtaining first feature data of a battery pack, processing the first feature data to obtain second feature data, employing a thermal runaway prediction model, taking the second feature data as input, and outputting thermal runaway prediction data. The first characteristic data comprises an ambient temperature value of the battery pack, voltage data composed of voltage values of each battery monomer in the battery pack and temperature data composed of temperature detection values of each battery monomer, and the processing comprises the steps of sequentially scrambling the temperature data by adopting a chaotic scrambling algorithm, and fusing the sequentially scrambled temperature data by using a Kalman filtering algorithm to obtain temperature optimization data, wherein the second characteristic data comprises an environment temperature value, voltage ...

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Номер записи: 18
17-12-2014 дата публикации

Output voltage positive and negative polarity inversion method based on modular multilevel converter

Номер: CN104218808A
Автор: YAO LIANGZHONG, CAI XU, ZHU MIAO, ZHANG JIANWEN, SUN CHANGJIANG, DING JIE, YANG BO, XU XIAOHUI, CAO YUANZHI, LU JUNFENG, LI YAN, TAO YIBIN, LI GUANJUN, CUI HONGFEN, WANG DESHUN, ZHOU CHEN, LIU HUAN, YAN SHENGCHI, WANG ZHIBING, SUN WEI, HU JINHANG, FENG XINZHEN, WU JING, ZHU HONGBAO, LI YUELONG
Принадлежит:

The invention provides an output voltage positive and negative polarity inversion method based on a modular multilevel converter. The method includes 1, constructing a modular multilevel converter module; 2, inverting the output voltage positive and negative polarities by adjusting the bridge voltage of the modular multilevel converter module; modulating the upper bridge voltage uu and lower bridge voltage ul of each phase, according to a bridge voltage wave image, into sine wave voltage symmetrical about a horizontal line U = UN/2 vertically, and allowing that the LCC terminal output voltage ULCC = UN; modulating the upper bridge voltage uiu and lower bridge voltage uil of each phase into sine wave voltage symmetrical about a horizontal line U = -UN/2 vertically, and allowing that the LCC terminal output voltage ULCC = -UN. Compared with the prior art, the method has the advantages that the operation requirements of LCC-HVDC and VSC-HVDC interface converters are met, and LCC-HVDC and VSC-HVDC ...

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Номер записи: 19
06-04-2011 дата публикации

Vehicle positioning method based on radio frequency identification self-calibration

Номер: CN0102004893A
Автор: Li Qi, Tong Guodao, Qian Yanping, Fang Shixiong, Hu Jinhang
Принадлежит:

A vehicle positioning method based on radio frequency identification (RFID) self-calibration is characterized by using a rotary encoder installed on a spindle of a vehicle driving motor to obtain the vehicle displacement information; using an RFID electronic tag installed on the vehicle track to calibrate the displacement information measured by the rotary encoder; selecting the weighting distribution coefficient according to the deviation range of the measurement coordinate value of the rotary encoder and the coordinate value of the RFID electronic tag and calibrating the dynamic deviation of the rotary encoder and the RFID electronic tag by the self-learning weighed least square method to reduce the measurement error of the rotary encoder caused by impact of the mechanical factors of the vehicle. The deviation information of the current position of the vehicle and the center point of the stack position is uploaded to the vehicle terminal control system, thus providing reference to the ...

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Номер записи: 20
13-08-2014 дата публикации

Energy storage converter parallel operation optimizing control method in three-phase imbalance system

Номер: CN103986174A
Автор: HU JINHANG, DING JIE, WU FUBAO, LI GUANJUN, TAO YIBIN, YANG BO, HE WEIGUO, SANG BINGYU, FENG XINZHEN, YU HAOJIE, LIU HUAN, YAN SHENGCHI, YU BIN, CAO YUANZHI, ZHOU CHEN, ZHU HONGBAO, LI YUELONG, LU JUNFENG, WU TAO, LI HAIFENG, LUO JIANYU
Принадлежит:

The invention provides an energy storage converter parallel operation optimizing control method in a three-phase imbalance system. The method includes the following steps that a three-phase voltage actual measurement effective value, a three-phase active power value and a three-phase reactive power value of an energy storage converter in parallel operation are calculated; a three-phase frequency set value and a three-phase voltage effective set value of the energy storage converter in parallel operation are calculated; active power and reactive power of all phases of the energy storage converter in parallel operation are balanced by adjusting the output frequency and voltage of each phase. The energy storage converter parallel operation optimizing control method in the three-phase imbalance system solves the problems that the voltage and frequency of the energy storage converter are not balanced and currents of the energy storage converter are not distributed evenly in multi-machine parallel ...

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Номер записи: 21
05-11-2014 дата публикации

Voltage optimization control method of off-grid energy storage converter based on compound control

Номер: CN104135021A
Автор: FENG XINZHEN, TAO YIBIN, LI GUANJUN, DING JIE, WU FUBAO, LI QIANG, YANG BO, HE WEIGUO, YUAN XIAODONG, HU JINHANG, ZHANG XIAOLIN, SANG BINGYU, ZHOU CHEN, CAO YUANZHI, LIU HUAN, YAN SHENGCHI, YU HAOJIE
Принадлежит:

The invention provides a voltage optimization control method of an off-grid energy storage converter based on compound control. The optimization control method comprises the steps of summing outputs of repetitive control and PID (Proportion Integration Differentiation) control as a control signal of the energy storage converter, allowing the PID control to adjust a deviation of an effective value of voltage, obtaining PID control quantity, allowing the repetitive control to adjust a deviation of actual output voltage and analog sinusoidal voltage of the energy storage converter, and obtaining repetitive control quantity. The method solves the problem of poor power quality of a power supply system caused by non-linear load connection, and improves the power quality of the power supply system during off-grid operation of the energy storage converter.

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Номер записи: 22
15-04-2015 дата публикации

Direct current source coordination controller and direct current converter parallel connection control method thereof

Номер: CN104518509A
Автор: LI QIANG, YUAN XIAODONG, LI GUANJUN, LYU ZHENHUA, LIU DAN, CAI DONGYANG, TAO YIBIN, HU JINHANG, ZHOU CHEN, YU HAOJIE, FENG XINZHEN, CAO YUANZHI, LIU HUAN, YANG BO, HE WEIGUO, YAN SHENGCHI
Принадлежит:

The invention discloses a direct current source coordination controller which comprises an information collecting module, a power calculating module, a control parameter setting module and a coordination control module. The information collecting module is respectively in communication connection with the power calculation module and the control parameter setting module. The power calculation module and the control parameter setting module are both in communication connection with the coordination control module. The information collecting module and the coordination control module are both externally connected with direct current sources. The invention further discloses a method for using the direct current source coordination controller to control direct current converter parallel connection. The direct current source coordination controller has the advantages that the controller acquires real-time power and sets a boundary value by collecting the capacities, protecting parameters, limit ...

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Номер записи: 23
16-05-2023 дата публикации

Self-starting grid-connected control method and system for box-type mobile power supply

Номер: CN116131348A
Автор: HU JINHANG, MIAO YA, ZHANG LIANGLIANG, WANG LEI
Принадлежит:

The invention relates to the technical field of power systems, in particular to a self-starting grid-connected control method and system for a box-type mobile power supply, and the control method comprises the steps: S1, selecting a box-type power supply for discharging from X box-type power supplies connected to each switch network cabinet according to a discharging sequence, and putting the selected box-type power supply into a first set; s2, judging whether a switch branch connected with the box-type power supply in the first set is connected with a pre-charging branch in parallel or not, and if yes, selecting one pre-charging branch to execute pre-charging work; otherwise, selecting the pre-charging branch to execute pre-charging work; s3, when the voltage of the direct-current bus reaches a preset value, a pre-charging contactor of the pre-charging branch is switched off, a switch branch corresponding to the box-type power supply in the first set is switched on, and grid connection ...

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Номер записи: 24
30-12-2015 дата публикации

Light stores up integrated device suitable for distributing type electricity generation

Номер: CN0204928192U
Автор: YANG BO, LI YUELONG, HU JINHANG, ZHOU CHEN, LI GUANJUN, LIU HUAN, YU HAOJIE, YAN SHENGCHI, CUI HONGFEN, ZHANG YU, FENG XINZHEN, SHI SHANSHAN, HOU SHUYI, FANG CHEN, ZHU HONGBAO, LU JUNFENG, LIU SHU
Принадлежит:

The utility model provides a light stores up integrated device suitable for distributing type electricity generation, including photovoltaic unit, energy storage battery unit and the unit that is incorporated into the power networks, the photovoltaic unit is including the photovoltaic module, first fuse group, first direct current preliminary filling circuit, a LC wave filter and the BOOSTBUCK circuit that connect gradually, the energy storage battery unit is including the energy storage battery, second fuse group, a EMI wave filter and the second direct current preliminary filling circuit that connect gradually, the unit that is incorporated into the power networks is including the third fuse group, the 2nd EMI wave filter, interchange preliminary filling circuit, isolation transformer, the 2nd LC wave filter and the inverter circuit that connect gradually, the electric wire netting is gone into in the montage of third fuse, inverter circuit respectively with BOOSTBUCK circuit and second ...

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Номер записи: 25