公开(公告)号：US06404150B1

公开(公告)日：2002-06-11

申请号：US09604439

申请日：2000-06-27

申请人： Thomas Wolfgang Nehl ,  Malakondaiah Naidu ,  Avoki Omekanda ,  Anita B. Rao ,  Lateef A. Kajouke ,  Mark M. Osugi

发明人： Thomas Wolfgang Nehl ,  Malakondaiah Naidu ,  Avoki Omekanda ,  Anita B. Rao ,  Lateef A. Kajouke ,  Mark M. Osugi

IPC分类号： H02P768

CPC分类号： B60L1/00 ,  B60L2210/10 ,  Y02T10/7216

摘要： An electric vehicle accessory motor drive power supply system (40) that utilizes a single power supply design to provide efficient variable speed motor control to both brushless and brush-type DC motors (42,44). The power supply system includes at least one of each type of motor along with a first DC-DC converter (46) that provides operating power to the brushless motor (42) and a second DC-DC converter (48) that provides operating power to the brush-type motor (44). Both converters (46,48) have a power input (52) connected to the electric vehicle's high voltage bus (50) and each includes a data input (54) for receiving a speed control signal (SC) indicative of desired motor speed, as well as an output (56) for providing a motor drive signal to its associated DC motor (42,44). Each of the converters (46,48) is operable in response to its received speed control signal to convert operating power from the high voltage bus (50) into a lower voltage variable motor drive signal that is provided to its associated motor (42,44) via its output (56). The variable drive signal can be either a variable DC voltage signal or a pulse-width modulated signal. With this arrangement, a single converter design, including a single speed control interface, can be utilized to operate both brush-type and brushless motors. Furthermore, the system permits more efficient operation of the brushless motors since it obviates the need for speed control electronics on the motor itself and therefore eliminates the relatively inefficient use of cascaded PWM stages.

摘要翻译： 一种电动车辆附件电动机驱动电源系统（40），其利用单个电源设计为无刷和直流电动机（42,44）提供有效的变速电动机控制。 电源系统包括每种类型的电动机中的至少一个以及向无刷电动机（42）提供工作电力的第一DC-DC转换器（46）和向第一DC-DC转换器（48）提供工作电力的第二DC-DC转换器 刷式电动机（44）。 两个转换器（46,48）都具有连接到电动汽车的高压总线（50）的电力输入（52），并且每个转换器包括用于接收指示期望的电动机速度的速度控制信号（SC）的数据输入（54），如 以及用于向其相关联的DC电动机（42,44）提供电动机驱动信号的输出（56）。 每个转换器（46,48）响应于其接收到的速度控制信号而工作，以将来自高压总线（50）的操作功率转换成提供给其相关联的电动机（42,44）的较低电压可变电动机驱动信号 ）通过其输出（56）。 可变驱动信号可以是可变直流电压信号或脉冲宽度调制信号。 通过这种布置，可以使用包括单个速度控制接口的单个​​转换器设计来操作电刷型和无刷电动机。 此外，该系统允许无刷电动机的更有效的操作，因为它消除了对电动机本身上的速度控制电子装置的需要，因此消除了级联PWM级的相对低效的使用。