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    • 1. 发明申请
    • SPEED ADJUSTMENT DEVICE AND SPEED ADJUSTMENT METHOD FOR SINGLE-PHASE INDUCTION MOTOR
    • 单相电动机速度调节装置及速度调整方法
    • WO2016029764A9
    • 2016-07-14
    • PCT/CN2015084979
    • 2015-07-23
    • GD MIDEA ENVIRONMENT APPLIANCES MFG CO LTDMIDEA GROUP CO LTD
    • LIU XINCHE YUMING
    • H02P25/04H02P25/18H02P27/08
    • H02P25/04H02P25/18H02P27/08
    • A speed adjustment device (1000) for a capacitance started single-phase induction motor (M), comprising: a three-phase inverter (100) which comprises three output ends (a, b, c), wherein a main winding (WT) of the single-phase induction motor is connected between any two output ends of the three output ends; a controllable switch (200) which is connected in series to a secondary winding (ST) of the single-phase induction motor, one end of the controllable switch being connected to another output end among the three output ends other than the two output ends which are connected to the main winding, the other end of the controllable switch being connected to one end of the secondary winding, and the other end of the secondary winding being connected to any output end of the two output ends which are connected to the main winding; and a controller (300) which respectively controls the three-phase inverter and the controllable switch according to a rotation speed of the single-phase induction motor, so as to adjust the rotation speed of the single-phase induction motor. The speed adjustment device has a simple structure, and can smoothly adjust the speed of a single-phase induction motor. Also provided is a speed adjustment method for a capacitance started single-phase induction motor.
    • 一种用于电容起动单相感应电动机(M)的调速装置(1000),包括:三相逆变器(100),其包括三个输出端(a,b,c),其中主绕组(WT) 的单相感应电动机连接在三个输出端的任意两个输出端之间; 与单相感应电动机的次级绕组(ST)串联连接的可控开关(200),所述可控开关的一端与除了两个输出端之外的三个输出端中的另一输出端连接, 连接到主绕组,可控开关的另一端连接到次级绕组的一端,次级绕组的另一端连接到连接到主绕组的两个输出端的任何输出端 ; 以及根据单相感应电动机的转速分别控制三相逆变器和可控开关的控制器(300),以便调节单相感应电动机的转速。 调速装置结构简单,可以平滑调整单相感应电机的转速。 还提供了一种用于电容启动单相感应电动机的速度调节方法。