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    • 4. 发明申请
    • POWER ARCHITECTURE AND BRAKING CIRCUITS FOR DC MOTOR-PROPELLED VEHICLE
    • 用于直流电机驱动的车辆的动力结构和制动电路
    • US20080290825A1
    • 2008-11-27
    • US12127317
    • 2008-05-27
    • Alain St-JacquesAndrew C. TarnowFrank Wegner Donnelly
    • Alain St-JacquesAndrew C. TarnowFrank Wegner Donnelly
    • H02P3/12
    • B60L7/12B60L2200/26B60L2220/18Y02T10/7258
    • A dynamic braking circuit that can be operated with stability over both high and low speed regimes. This circuit has the advantage of using fewer components than previous circuits. In addition, when in braking mode, the armature and field currents tend to oppose each other across the main braking switch hence reducing electromechanical stresses when in high current regime. According to a second embodiment, a dynamic braking circuit implements a “soft” extended braking function with the capability of providing a smoother braking action at high braking effort at little extra cost resulting from the replacement of a contactor by a reverser. The main advantages of this preferred embodiment are that the current generated by the armatures during braking can be controlled independently from the excitation of the field windings at low speeds and that it enables simultaneous self supply, regeneration and dynamic braking.
    • 一种动态制动电路,可在高速和低速状态下稳定运行。 该电路具有比以前的电路使用更少的组件的优点。 另外,当处于制动模式时,电枢和励磁电流横跨主制动开关往往彼此相对,因此在高电流状态下降低机电应力。 根据第二实施例,动态制动电路实现“软”延长制动功能,其能够以高制动力提供更平稳的制动作用,而由于由反向器更换接触器导致的额外成本。 该优选实施例的主要优点是可以独立于在低速下对励磁绕组的励磁来控制在制动期间由电枢产生的电流,并且其能够同时进行自供电,再生和动态制动。