公开(公告)号：US11909342B2

公开(公告)日：2024-02-20

申请号：US17782713

申请日：2020-09-29

申请人： AISIN CORPORATION ,  NAGOYA INSTITUTE OF TECHNOLOGY

发明人： Subrata Saha ,  Hiroki Iwai ,  Takashi Kosaka ,  Hiroaki Matsumori ,  Naoto Saito ,  Yoshinobu Ito ,  Isao Fujiwara

IPC分类号： H02P27/08 ,  H02P6/08 ,  H02M7/5395 ,  H02K11/33

CPC分类号： H02P27/08 ,  H02K11/33 ,  H02M7/5395 ,  H02P6/08 ,  H02P2209/00

摘要： Two inverters (10) provided at respective both ends of open-end windings (8) are appropriately controlled. As control regions (R) of a rotating electrical machine (80), a first speed region (VR1) and a second speed region (VR2) in which the rotational speed of the rotating electrical machine (80) is higher than in the first speed region (VR1) for the same torque are set, and in the second speed region (VR2), a rotating electrical machine control device (1) controls both inverters (10), a first inverter (11) and a second inverter (12), by mixed pulse width modulation control in which control is performed such that a plurality of pulses with different patterns are outputted during a first period (T1) which is a half cycle of electrical angle, and an inactive state continues during a second period (T2) which is the other half cycle.

公开(公告)号：US11668760B2

公开(公告)日：2023-06-06

申请号：US17353529

申请日：2021-06-21

申请人： Tsinghua University

发明人： Shilin Gao ,  Ying Chen ,  Shaowei Huang ,  Chen Shen ,  Zhendong Tan

IPC分类号： G01R31/42 ,  G01R23/12 ,  G01R31/40 ,  G05F5/00

CPC分类号： G01R31/42 ,  G01R23/12 ,  G01R31/40 ,  G05F5/00 ,  H02P2209/00

摘要： The present disclosure provides an optimization method, a unit, and an electronic device of a shifted frequency (SF)-based electromagnetic transient simulation, comprising: determining a current amplitude and a voltage frequency based on a node voltage and a branch current calculated from a shifted frequency on a basis of a current time step; determining an optimal shifted frequency of the current time step based on the current amplitude and the voltage frequency; and updating the shifted frequency by adopting the optimal shifted frequency of the current time step for calculating a node voltage and a branch current of the next time step. The method, the unit, and the electronic device provided in the present disclosure may gradually update and optimize the shifted frequency in the simulation process so to enable the shifted frequency to reach the best, thus ensuring the accuracy of output current and voltage simulation results.

公开(公告)号：US20180019696A1

公开(公告)日：2018-01-18

申请号：US15535171

申请日：2015-12-10

申请人： AUDI AG

发明人： Nico SCHOBEß ,  Mohamed HAMMAM

IPC分类号： H02P27/08

CPC分类号： H02P27/08 ,  H02P6/15 ,  H02P23/00 ,  H02P2209/00

摘要： A method for checking an operation of an electric machine, which has three phases. For pulses of a first electric variable of the three phases, a pulse width modulation is carried out. Depending in each case on a positioning of electromechanical components of the electric machine with respect to one another, the first electric variable has a pulse with a longest pulse width for a first of the three phases, a pulse with an intermediate pulse width for a second of the three phases, and a pulse with a shortest pulse width for a third of the three phases. A cycle of the pulse width modulation is delimited by two points in time.