Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 14. Отображено 14.
25-07-2019 дата публикации

FOREIGN OBJECT DETECTION CIRCUIT USING CURRENT MEASUREMENT

Номер: US20190225099A1
Автор: Daetwyler Andreas, SIEBER Lukas, VANCU Mircea-Florian, Widmer Hans Peter
Принадлежит:

The present disclosure describes techniques for detecting foreign objects by detecting changes in an electrical characteristic of an array of sense elements for detection objects based on a current measurement approach. In some aspects, an apparatus for measuring changes in current for detecting objects is provided. The apparatus includes a plurality of sense circuits each comprising a sense coil, the plurality of sense circuits each electrically connected to a common output node. The apparatus further includes a driver circuit electrically connected to the plurality of sense circuits and configured to operate as a voltage source and selectively apply a voltage signal at an operating frequency to each of the plurality of sense circuits. The apparatus further includes a current measurement circuit electrically connected to the common output node. The current measurement circuit is configured to provide a measurement output proportional to an electrical current at the common output node. 1. An apparatus for measuring changes in current for detecting objects , the apparatus comprising:a plurality of sense circuits each comprising a sense coil, the plurality of sense circuits each electrically connected to a common output node;a driver circuit electrically connected to the plurality of sense circuits and configured to operate as a voltage source and selectively apply a voltage signal at an operating frequency to each of the plurality of sense circuits; anda current measurement circuit electrically connected to the common output node, the current measurement circuit configured to provide a measurement output proportional to an electrical current at the common output node.2. The apparatus of claim 1 , further comprising a detection circuit electrically connected to the current measurement circuit and configured to determine whether an object is proximate at least one sense coil of the plurality of sense circuits based on the measurement output proportional to the ...

Подробнее
Номер записи: 1
05-11-2020 дата публикации

Active Harmonics Cancellation

Номер: US20200350816A1
Автор: Hans Peter Widmer, Marcel Fischer, Mircea-Florian VANCU, Prasanth Venugopal
Принадлежит: WiTricity Corp

Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

Подробнее
Номер записи: 2
25-10-2022 дата публикации

Active harmonics cancellation

Номер: US11482921B2
Автор: Hans Peter Widmer, Marcel Fischer, Mircea-Florian VANCU, Prasanth Venugopal
Принадлежит: WiTricity Corp

Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

Подробнее
Номер записи: 3
12-01-2023 дата публикации

Active Harmonics Cancellation

Номер: US20230010790A1
Автор: Hans Peter Widmer, Marcel Fischer, Mircea-Florian VANCU, Prasanth Venugopal
Принадлежит: WiTricity Corp

Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

Подробнее
Номер записи: 4
11-04-2024 дата публикации

System for Controlling an Inductor Freewheeling Voltage

Номер: US20240120830A1
Автор: Florian Vancu, Markus Fueglister
Принадлежит: ABB Schweiz AG

A system for controlling an inductor freewheeling voltage includes first and second switches, a first diode, and an inductor. When open, the first switch connects a first terminal of the inductor with a power bus. The first switch is controlled by a first control signal. A first terminal of the first diode is connected to a ground, and a second terminal of the first diode is connected to the first terminal of the inductor. The first diode allows an electric current to pass from the ground to the first terminal of the inductor. When open, the second switch connects a second terminal of the inductor with the ground. A switch control circuit is controlled with a second control signal and keeps the second switch open or such that there is a voltage drop across the second switch.

Подробнее
Номер записи: 5
09-11-2023 дата публикации

Active Harmonics Cancellation

Номер: US20230361566A1
Автор: Hans Peter Widmer, Marcel Fischer, Mircea-Florian VANCU, Prasanth Venugopal
Принадлежит: WiTricity Corp

Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

Подробнее
Номер записи: 6
01-05-2024 дата публикации

Inrush current limiting circuit

Номер: EP4360179A1
Автор: Florian Vancu, Markus Fueglister
Принадлежит: ABB Schweiz AG

The invention relates to an inrush current limiter circuit (102, 104, 105) for a rectifier (100), wherein the inrush current limiter circuit provides a flow of a current between a rectifying part (101) of the rectifier (100) and a filter capacitance (109), comprising a power stage (105); wherein the power stage (105) comprises a power stage resistor (108) and a power stage transistor (107) parallel to the power stage resistor (108), wherein the power stage resistor (108) is configured to conduct an amount of the current in dependence on the state of the power stage transistor (107), and wherein the power stage transistor (107) is configured to conduct an amount of the current in dependence on a charging of a gate capacitance of the power stage transistor (107).

Подробнее
Номер записи: 7
29-12-2022 дата публикации

System for controlling an inductor freewheeling voltage

Номер: CA3224110A1
Автор: Florian Vancu, Markus Fueglister
Принадлежит: Individual

The present invention discloses a system for controlling an inductor freewheeling voltage comprising a first switch, a second switch, a first diode, an inductor. The first switch is connected such that, in open state, it will connect a first terminal of the inductor with a power bus and that the first switch is controlled by a first control signal. A first terminal of the first diode is connected to a ground, and a second terminal of the first diode is connected to the first terminal of the inductor. The first diode is connected such that it allows an electric current to pass from the ground to the first terminal of the inductor. The second switch connected such that, in open state, it will connect a second terminal of the inductor with the ground. The system further comprises a switch control circuit, which is configured to be controlled with a second control signal, delivered to an input terminal of the switch control circuit, such that in a first state of the second control signal the switch control circuit keeps the second switch open and in a second state of the second control signal the switch control circuit keeps the second switch such that there is a voltage drop across the second switch.

Подробнее
Номер записи: 8
29-12-2022 дата публикации

Inrush current limiting circuit

Номер: CA3220809A1
Автор: Florian Vancu, Markus Fueglister
Принадлежит: Individual

The invention relates to an inrush current limiter circuit (102, 104, 105) for a rectifier (100), wherein the inrush current limiter circuit provides a flow of a current between a rectifying part (101) of the rectifier (100) and a filter capacitance (109), comprising a power stage (105); wherein the power stage (105) comprises a power stage resistor (108) and a power stage transistor (107) parallel to the power stage resistor (108), wherein the power stage resistor (108) is configured to conduct an amount of the current in dependence on the state of the power stage transistor (107), and wherein the power stage transistor (107) is configured to conduct an amount of the current in dependence on a charging of a gate capacitance of the power stage transistor (107).

Подробнее
Номер записи: 9
09-05-2024 дата публикации

Inrush Current Limiting Circuit

Номер: US20240154405A1
Автор: Florian Vancu, Markus Fueglister
Принадлежит: ABB Schweiz AG

An inrush current limiter circuit for a rectifier provides a flow of a current between a rectifying part of the rectifier and a filter capacitance. A power stage includes a power stage resistor and a power stage transistor disposed in parallel circuit arrangement to the power stage resistor. The power stage resistor conducts an amount of the current in dependence on the state of the power stage transistor, and the power stage transistor conducts an amount of the current in dependence on a charging of a gate capacitance of the power stage transistor.

Подробнее
Номер записи: 10
15-08-2023 дата публикации

Active harmonics cancellation

Номер: US11728647B2
Автор: Hans Peter Widmer, Marcel Fischer, Mircea-Florian VANCU, Prasanth Venugopal
Принадлежит: WiTricity Corp

Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

Подробнее
Номер записи: 11
12-11-2020 дата публикации

Active harmonics cancellation

Номер: WO2020226916A1
Автор: Hans Peter Widmer, Marcel Fischer, Mircea-Florian VANCU, Prasanth Venugopal
Принадлежит: WITRICITY CORPORATION

Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

Подробнее
Номер записи: 12
09-03-2022 дата публикации

Active harmonics cancellation

Номер: EP3962769A1
Автор: Hans Peter Widmer, Marcel Fischer, Mircea-Florian VANCU, Prasanth Venugopal
Принадлежит: WiTricity Corp

Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

Подробнее
Номер записи: 13
29-10-2024 дата публикации

Active harmonics cancellation

Номер: US12132311B2
Автор: Hans Peter Widmer, Marcel Fischer, Mircea-Florian VANCU, Prasanth Venugopal
Принадлежит: WiTricity Corp

Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

Подробнее
Номер записи: 14