Control of steady short-circuit current in brushless synchronous generator
Overload operation capability and stable short-circuit current output capability in case of sud-den short-circuit are important requirements for brushless synchronous generators.When a sudden short-circuit occurs in the generator,the generator controller needs to cooperate with the brushless synchronous generator to control the short-circuit current,ensuring sufficient short-circuit current output capacity while also avoiding excessive short-circuit current damage the generator.Five types of short circuits was ana-lyzed that may occur in brushless synchronous generators,a trapezoidal objective curve was proposed to control the voltage and current,and model free adaptive control algorithm was used to control short-circuit current,enabling the generator to output the required short-circuit current when various types of sudden short circuit faults occur.A simulation model was established for the generator and controller,and the model was used to simulate and verify the model free adaptive control algorithm.At the same time,an ex-perimental platform was established for experimental verification.After verification,the model free adap-tive algorithm can effectively control the short-circuit current of brushless synchronous generators at the target value,verifying effectiveness of this control algorithm in generator short-circuit current control.
model free adaptive controlbrushless synchronous generatorsudden short-circuitshort-cir-cuit current controlfault protectionoverload operation
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