DC motor control system of electric vehicle

Application Number: 00110315
Application Date: 2000.04.12
Publication Number: 1317421
Publication Date: 2001.10.17
Priority Information:
International: H02P7/29;B60L15/00;B60L15/20
Applicant(s) Name: Inst of Metals, Chinese Academy of Sciences
Inventor(s) Name: Liu Bingdong;Jiang Zhimin;Li Donghua
Patent Agency Code: 21002
Patent Agent: zhang chen
Abstract A DC motor control system for electric vehicles is disclosed. The voltage of accumulator is modulated by a fixed-frequency PWM chopping voltage regulator composed of C, IGBT and D and then applied to DC motor. The grid of IGBT is controlled by switching power supply controller TL494. A control instrument is sent to the dead time control pin of TL494. A hall current sensor HCS is connected to TL494 to constitute a current limitation regulator. Its advantages include regulating rotation speed of DC motor by throttle pedal and better start and acceleration performance of electric vehicle.