公开(公告)号：EP0035608A1

公开(公告)日：1981-09-16

申请号：EP80300604.8

申请日：1980-02-28

申请人： EXXON RESEARCH AND ENGINEERING COMPANY

发明人： White, Kevin Earl

IPC分类号： H02P7/28 ,  B60L15/04

CPC分类号： H02P7/298

摘要： A system applicable for use in for example, an electric vehicle, for controlling a separately-excited DC motor (19,21,53), permits field current control over all operating speed ranges of the motor. Below base speed a current limiting resistor (23) is placed in series with the armature winding (19) and the torque is directly proportional to field current (I f ). Above base speed, the resistor (23) is shorted (S 2 ), and the speed is inversely proportional to field current. A feedback network is responsive to acceleration and deceleration input signals (E 1 , E 2 ) for controlling the magnitude of the field current. A logic network (27) provides automatic control, including switching battery (V Bl -V Bn ) interconnections, for changing the operating speed range of the motor by changing the level of voltage applied across the armature winding (19). Relatively low current switching of the batteries (V Bl -V Bn ) is provided by first summing with the error signal (E.) in the feed back loop, a ramp signal (E,), for forcing the magnitude of the armature current (I A ) towards zero, second, opening a switch (S 1 ) to disconnect the batteries from the armature winding (19), third, switching the batteries into a new circuit configuration, fourth, a differential amplifier (51) for subtracting from the new level of battery voltage (E B ) the present armature voltage, (E A ) produces an output signal (E B -E A ) having a level analogous to the difference therebetween for summing with the error signal (E,) for controlling the magnitude of field current (IF) to equate the battery and armature voltages, and lastly, closing a switch (S,) to reconnect the battery configuration across the armature winding (19).

摘要翻译： 适用于对于实施例中使用的系统，在电动车辆中，用于控制他励直流电动机（19,21,53）允许在发动机的所有工作速度范围励磁电流控制。 下面基本速度限流电阻（23）被放置在串联在电枢绕组（19）和所述转矩成正比励磁电流（If）的。 基速以上，电阻器（23）被短路（S2），并且所述速度是成反比的励磁电流。 反馈网络是响应于加速和减速输入信号（E1，E2），用于控制磁场电流的幅值。 逻辑网络（27）提供自动的控制，包括交换电池（VB1-VBn的）互连，用于通过在两端电压的电枢绕组（19）施加的电平改变改变所述发动机的运转速度范围。 电池（VB1-VBn的）的相对低的电流切换是由第一加法与进料在误​​差信号（E4）的反馈回路，用于迫使电枢电流的大小（IA）向零斜坡信号（E5）提供 ，第二断开开关（SI），以用于从电池电压的新电平中减去断开电枢绕组（19），第三，开关电池装入一个新的电路结构，第四差分放大器（51）的电池（EB ）本电枢电压（EA）具有在它们之间用于与所述误差信号（E4）求和，用于控制磁场电流的幅值的差类似的电平的输出信号（EB-EA）的可生产（IF）等号电池和 电枢电压，最后，闭合开关（S1）重新连接穿过电枢绕组（19）的电池的配置。