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Electronic controller for electrically-propelled vehicle - uses power transistor chopper circuit with rheostatic braking and thyristor reversible field supply
Electronic controller for electrically-propelled vehicle - uses power transistor chopper circuit with rheostatic braking and thyristor reversible field supply
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机译:电动汽车的电子控制器-使用功率晶体管斩波器电路,具有变阻制动和可控硅可逆场电源
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摘要
The electronic drive circuit uses a separately excited DC motor with the armature (I) supplied by a step-up/step-down chopper circuit. A rheostatic braking circuit a field inversion circuit are also incorporated. The chopper circuit has a first switching transistor (TR1) with a reverse diode (D2) connected in series across the DC supply line. A second power transistor (TR2) is connected via a split inductor (L1,L2) to the emitter of the first transistor (TR1) and through a reverse diode to the positive supply. The motor armature (I) is supplied from the mid-point (7) of the split inductor. An electronic controller circuit (E) determines the switching of the chopper transistors (TR1,TR2) and also the rheostatic braking transistor (TR4). The same controller switches a thyristor converter (T5-T8) to determine the direction of field (J) current.
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