Invention Grant
- Patent Title: Electric automobile
- Patent Title (中): 电动汽车
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Application No.: US14000783Application Date: 2012-02-10
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Publication No.: US09031724B2Publication Date: 2015-05-12
- Inventor: Takayoshi Ozaki
- Applicant: Takayoshi Ozaki
- Applicant Address: JP Osaka
- Assignee: NTN Corporation
- Current Assignee: NTN Corporation
- Current Assignee Address: JP Osaka
- Priority: JP2011-039856 20110225
- International Application: PCT/JP2012/053062 WO 20120210
- International Announcement: WO2012/114903 WO 20120830
- Main IPC: B60L9/18
- IPC: B60L9/18 ; B60L15/20 ; B60L3/00 ; B60L15/10 ; B60W50/023

Abstract:
An electric vehicle includes a motor unit configured to drive a wheel, an ECU and an inverter unit. A motor control circuitry of the inverter unit includes a rotational frequency controller operable to perform rotational frequency control. The electric vehicle also includes a torque control abnormalities detector configured to detect an abnormality of torque control performed by the motor control circuitry. The electric vehicle also includes a control mode switcher configured to, in response to determination by the torque control abnormalities detector that there is an abnormality of torque control, cause the motor control circuitry to switch from torque control to rotational frequency control performed by the rotational frequency controller.
Public/Granted literature
- US20130338866A1 ELECTRIC AUTOMOBILE Public/Granted day:2013-12-19
Information query
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