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    • 33. 发明授权
    • Speed control circuit arrangement for an AC commutator motor
    • 用于交流换向器电机的速度控制电路装置
    • US4228383A
    • 1980-10-14
    • US974116
    • 1978-12-28
    • Katsuji SoedaMitsuhiro OyamaFumio SakumaTadashi Nakajima
    • Katsuji SoedaMitsuhiro OyamaFumio SakumaTadashi Nakajima
    • H02P25/04H02P25/14H02P27/02H02P5/40H02P7/28
    • H02P25/14
    • A speed control circuit arrangement for controlling a rotational speed of an AC commutator motor by an AC controlled rectifier element. The speed control circuit arrangement comprises a pulse transformer which is connected at the secondary winding to the control electrode of the AC controlled rectifier element and one of two main electrodes of the controlled rectifier element and supplies a trigger pulse to the control electrode, a variable resistor for adjusting the rotational speed of the motor, a first capacitor connected at one end through the variable resistor to the other main electrode and at the other end to one end of an AC power source, a pulse generating element connected across said first capacitor with the primary winding of the pulse transformer intervening therebetween, and a first resistor connected at one end to the one main electrode and at the other end to the other end of the AC power source through the first capacitor. With such a construction, an inductive voltage regenerated in the armature of the motor (hereinafter referred to as a flash voltage) is effectively used to perform a stable operation of the AC commutator motor at a low speed.
    • 一种速度控制电路装置,用于通过交流控制整流元件控制交流换向马达的转速。 速度控制电路装置包括脉冲变压器,该脉冲变压器在次级绕组处连接到可控整流元件的控制电极和可控整流元件的两个主电极中的一个,并向控制电极提供触发脉冲,可变电阻器 用于调节电动机的转速;第一电容器,其一端通过可变电阻器连接到另一主电极,另一端连接到交流电源的一端;脉冲发生元件,连接在所述第一电容器与 介于其间的脉冲变压器的初级绕组,以及第一电阻器,其一端通过第一电容器连接到一个主电极,另一端连接到交流电源的另一端。 通过这样的结构,在电动机的电枢中再生的感应电压(以下称为闪光电压)被有效地用于以低速执行AC换向器电动机的稳定运行。