An induction motor dynamic braking control circuit


Posted on Mar 28, 2007

AC contactor Cli suction units, motor was switched on at the same time, CJ1 pair of contacts to the thyristor SCR shorted SCR it off. Contactor C interesting by the diode DC vo


An induction motor dynamic braking control circuit
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ltage and suction units, make energy system moving like love. In the positive half-wave power, SCR control electrode through R, W. C, Dl get trigger current conduction through, motor b, c-phase winding through the SCR, CJ2 contacts is to give a half rectified current, C is also provided by SCR BI wave current to maintain suction units. When the end of the positive half-wave current, b. c-phase winding fork induced electric boat, the D4. cl normally closed contact freewheeling. Sentenced next positive half cycle. SCR is turned on again. b, c-phase winding half do not have to fork crossing the current, past through the next cycle, c charge storage charges, SCR trigger current of less than bottles instead guide ila, complete small dynamic braking. CJ, the power is not released, the SCR again through the small possibility of exclusion.




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