抄録
Eddy dynamometer is widely used in drive motor and ICE's character testing, in which it can't be loaded large torque under lower speed, and can't drag testing motor, and its dynamic response is weak .Also it changes mechanical energy to heat energy, which wastes energy resource. In this paper, a new kind of electric dynamometer based on separate-excited DC generator is introduced to overcome these shortcomings, which realizes large load torque under lower speed, and can measure motor's characters in four quadrants, and has quick dynamic response ability. The electric dynamometer can work in steady speed mode, steady torque mode and steady power mode. It can not only measure motor steady character, but also dynamic character. In this paper, the whole system hardware framework and software will be introduced. DC motor's control method is introduced in detail. At last, experiment results will be shown on.
