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1. (WO2017148076) ELECTRIC MOTOR DRIVE APPARATUS AND ELECTRIC AUTOMOBILE

Pub. No.:    WO/2017/148076    International Application No.:    PCT/CN2016/090078
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Fri Jul 15 01:59:59 CEST 2016
IPC: B60L 11/18
Applicants: HUAWEI TECHNOLOGIES CO.,LTD.
华为技术有限公司
Inventors: TANG, Jie
唐杰
YANG, Lizhou
杨立周
YI, Jie
裔杰
Title: ELECTRIC MOTOR DRIVE APPARATUS AND ELECTRIC AUTOMOBILE
Abstract:
An electric motor drive apparatus, comprising a drive circuit (201) outputting a three-phase alternating current and a main controller (202). The drive circuit (201) comprises a U-phase drive circuit (2011), a V-phase drive circuit (2012) and a W-phase drive circuit (2013). Each phase of drive circuit comprises n storage cells and n electrical drive units corresponding to the n storage cells on a one-to-one basis, signal ends of the n electrical drive units are connected to the main controller (202), input ends of the n electrical drive units are connected to corresponding storage cells, and output ends of the n electrical drive units are cascaded to output one phase of three-phase alternating current, where n is a positive integer. The main controller (202) determines, for each phase of drive circuit in the drive circuit (201), an output voltage adjustment factor of each of the n electrical drive units in the phase of drive circuit according to the voltage of the n storage cells in the phase of drive circuit and outputs the output voltage adjustment factor to the corresponding electrical drive unit. The apparatus can improve the utilization rate of storage cells.