Electric motor control device
Номер патента: MY176356A
Опубликовано: 03-08-2020
Автор(ы): Masaki Okamura, Naoyoshi Takamatsu, Toshifumi Yamakawa
Принадлежит: Toyota Motor Co Ltd
Опубликовано: 03-08-2020
Автор(ы): Masaki Okamura, Naoyoshi Takamatsu, Toshifumi Yamakawa
Принадлежит: Toyota Motor Co Ltd
Реферат: The purpose of the present invention is to suppress ripples in the inter-terminal voltage of a smoothing capacitor. An electric motor control device (15) controls an electric motor system including a power converter (13), a smoothing capacitor (12), and a three-phase AC electric motor (14). The electric motor control device (15) comprises: generation means (156u, 156v, 156w) for generating modulated signals (Vmu, Vmv, Vmw) by adding the third-order harmonic signal (Vh1) to phase voltage command signals (Vu, Vv, Vw); a control means (157) for controlling the operation of the power converter by using the modulated signals; and an adjustment means (155) for adjusting the amplitude of the third-order harmonic signal. The adjustment means adjusts the amplitude of the third-order harmonic signal so that a peak value of the inter-terminal voltage (VH) of the smoothing capacitor obtained when the amplitude of the third-order harmonic signal is adjusted becomes smaller than a peak value of the inter-terminal voltage of the smoothing capacitor obtained when the amplitude of the third-order harmonic signal is not adjusted. Figure 9
Electric motor control apparatus
Номер патента: US09553541B2. Автор: Masaki Okamura,Naoyoshi Takamatsu,Toshifumi Yamakawa. Владелец: Toyota Motor Corp. Дата публикации: 2017-01-24.