Permanent-magnet DC motor drive control system with approximate constant power pulling motor characteristics
A technology for motor drive control and traction motor, which is applied in the direction of speed/torque control of a single motor, electric components, and mechanical energy control, and can solve the problems of complex motor structure, reduced reliability, and poor control effect.
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[0047] Since each partial component that constitutes the present invention has mature technologies, especially permanent magnet direct current brushed or brushless motors and their drive control technology, DC-DC converter technology, there is no fundamental difficulty in the implementation of the present invention.
[0048] Figure 1 shows a DC permanent magnet brushless motor drive control system with approximately constant power traction motor characteristics.
[0049] In Figure 1: 1 is a rechargeable battery or supercapacitor pack E / C, 2 is a bidirectional buck-boost controllable DC-DC converter, 3 is a motor PWM drive controller, and 4 is a permanent magnet brushless DC motor (BLDCM) , 5 is the speed sensor, 6 is the Un-U'n function converter that converts the output signal Un of the speed sensor into the control signal U'n of the output voltage of the bidirectional buck-boost controllable DC-DC converter, and 7 is the PWM pulse generation and drive controller.
[0050] T...
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