Abstract
As a novel electrical variable transmission (EVT) in hybrid electric vehicles (HEV), the dual mechanical port electric machine (DMPM) has been being researched and developed recently. In this paper, a control and drive system for permanent magnetic DMPM (PM-DMPM), consisting of the inverter unit and the control unit, is designed and developed. The inverter unit adopts a back-to-back inverter topology structure, of which one inverter is used for the outer motor of PM-DMPM and the other for the inner motor. The control unit based on TMS320F2812 DSP and CPLD can control two individual permanent magnetic synchronous motors (PMSM). The control strategies of PM-DMPM are also introduced in detail. Finally experiments are established to test the control and drive system. Experiment results indicate that the designed system is stable, reliable and efficient, and can satisfy the requests of control and application of PM-DMPM in HEV.
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