摘要
传统的电压型无源逆变器常用于不间断电源(UPS)系统等需要高性能输出电压控制的场合。电压型逆变器每相接LC滤波器输出交流电压,在逆变器中,由于2阶LC滤波器的存在,空载或带有谐波污染的负载对逆变器输出电压特性不利,故此处采用输出电压反馈抑制谐振问题。同时为了提高输出电压的动态性能和精度,电压环采用谐振控制器。实验验证了这种基于状态反馈与谐振控制的方法的有效性。
The traditional type of voltage non-source inverter is commonly used in uninterrupted power supply（UPS） applications where high-performance output voltage is needed.Each phase of the voltage source inverter is connected with the LC filter.Due to the existence of second order LC filter in the inverter,when the no-load and loads can produce harmonic interference,the inverter output voltage characteristics become poor.Output voltage feedback is used to suppress resonance problems.Meanwhile,the resonant controller is used in voltage loop for better dynamic performance and accuracy.Experiments show that the method of state-feedback plus resonant control is effective.
出处
《电力电子技术》
CSCD
北大核心
2014年第10期29-30,56,共3页
Power Electronics
基金
国家自然科学基金(51277051)~~
关键词
逆变器
状态反馈
谐振控制
inverter
state-feedback
resonant control
