无刷同步发电机稳态短路电流控制  

Control of steady short-circuit current in brushless synchronousgenerator

作　　者：茆林仪 陈志辉[1] MAO Linyi;CHEN Zhihui(College of Automation,Nanjing University of Aeronautics and Astronautics,Nanjing 210000,China)

机构地区：[1]南京航空航天大学自动化学院,江苏南京210000

出　　处：《电机与控制学报》2024年第6期45-55,共11页Electric Machines and Control

摘　　要：过载运行能力和突然短路时稳定的短路电流输出能力是无刷同步发电机的重要性能要求。在发电机发生突然短路时,发电机控制器需要配合无刷同步发电机进行短路电流控制,在保证足够的短路电流输出能力的同时也要避免短路电流过大损坏电机。针对无刷同步发电机可能发生的5种短路类型进行了分析,提出梯形电压电流的控制目标曲线,利用无模型自适应控制算法进行短路电流控制,使发电机能在发生各种类型的突然短路故障时输出符合要求的短路电流。建立了发电机和控制器的仿真模型,进行无模型自适应控制方案的仿真验证,同时搭建了实验平台进行实验验证。经过验证无模型自适应算法可以将无刷同步发电机的短路电流很好地控制在目标值,验证了该控制算法在发电机短路电流控制方面的有效性。Overload operation capability and stable short-circuit current output capability in case of sudden 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 analyzed 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 experimental platform was established for experimental verification.After verification,the model free adaptive 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.

关 键 词：无模型自适应控制 无刷同步发电机 突然短路 短路电流控制 故障保护 过载运行 

分 类 号：TM31[电气工程—电机]