Research of Restraining Harmonic Circulating Current of Paralleled Inverters System
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摘要: 针对逆变电源并联系统中的谐波环流问题,在分析了单个逆变电源谐波扰动数学模型及逆变电源并联系统中谐波环流产生原理的基础上,提出对逆变电源并联系统中的单个逆变电源模块采用电流内环、电压外环的双环控制方式,并在逆变电源输出端增加耦合电感的方法来抑制系统中的谐波环流。理论分析及仿真结果验证了该方法的有效性。Abstract: In order to solve the problem of harmonic circulation current in paralleled inverters system,a method of restraining harmonic circulating current was proposed based on analysis of mathematic model of single inverter with harmonic disturbance and produced principle of harmonic circulating current in paralleled inverters system,in which dual-ring control mode of current and voltage was used for single inverter of paralleled inverters system and coupling inductances were added to output ends of inverters.The theoretical analysis and simulation result verified the validity of the method.
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Keywords:
- inverter /
- wireless parallel /
- harmonic circulating current /
- restraining /
- dual-ring control /
- coupling inductance
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