Title:
DRIVE SYSTEM FOR ELECTRIC VEHICLE AND ELECTRIC VEHICLE PROVIDED WITH THE SAME
Document Type and Number:
Japanese Patent JP2023179114
Kind Code:
A
Abstract:
To provide a drive system which controls so as to satisfy a required brake torque even in a coil switching period during regeneration of a rotary electric machine.SOLUTION: A drive system for an electric vehicle includes an inverter 3 which supplies an electric power to a rotary electric machine 1, a mechanical type coil switching device 8 which switches a connection state of a rotary electric machine 1 when a rotation speed of the rotary electric machine 1 arrives at a rotary speed threshold and a controller 4 which controls the rotary electric machine 1, the inverter 3 and the mechanical type coil switching device 8. The controller 4 includes an inverter control device 9, a coil switching control device 10 which controls the mechanical type coil switching device 8 and a mechanical brake control device 11 which controls a mechanical brake 16. The inverter control device 9 controls so as to turn the inverter 3 off when switching connection state of the rotary electric machine 1. The mechanical brake control device 11 causes the mechanical brake 16 to compensate a regeneration brake torque of the rotary electric machine 1 which disappears due to turning-off of the inverter 3 upon regeneration state of the rotary electric machine 1.SELECTED DRAWING: Figure 1
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Inventors:
ITO HIROTAKA
FUJII KATSUHIKO
SUGIMOTO SHINJI
HARA TAKEKI
KUSHIDA TAKATOSHI
FUJII KATSUHIKO
SUGIMOTO SHINJI
HARA TAKEKI
KUSHIDA TAKATOSHI
Application Number:
JP2022092202A
Publication Date:
December 19, 2023
Filing Date:
June 07, 2022
Export Citation:
Assignee:
HITACHI INDUSTRIAL PRODUCTS LTD
International Classes:
B60L7/24; B60L9/18; B60T8/17; H02P5/46; H02P25/18; H02P27/06
Attorney, Agent or Firm:
Polaire Patent Attorneys Corporation