摘要
深入研究了低输入电流纹波的单相全桥逆变器电路结构及控制策略,给出了实验波形。该电路结构中有源直流滤波电路位于全桥逆变器输出侧,与全桥逆变器共用输出滤波电感与电容,通过在两个输出滤波电容上叠加相同的基波电压来平衡负载上的脉动功率,从而减小输入电流低频纹波,使逆变器输出侧两倍输出频率的脉动功率在输出滤波电容与负载之间传递,阻断其向直流侧传递的路径,缩短低频电流纹波的传输路径。实验结果验证了这种方法的有效性和可行性。
The circuit structure and control strategy of the single-phase full-bridge inverter with low input current rip- ple are deeply investigated.The experimental waveforms are also given.The active direct current filter circuit in this circuit topology is located at output side which shares the common output filter inductor and capacitor with full-bridge inverter.The inverter＇s low frequency ripple suppression is realized by superimposing the fundamental harmonic volt- age at the output filter capacitor to balance the pulsating power on load.The pulsation power with double frequency of output voltage at the inverter＇s output side is transferred between the output filter capacitor and the load and it can- not be transferred to the direct current side.The transmission path of low frequency current is cut short.The experi- mental results verify the effectiveness and feasibility of the proposed method.
作者
陈艳慧
周烽
CHEN Yan-hui;ZHOU Feng(Fujian Key Laboratory of New Energy Generation and Power Conversion,Fuzhou University,Fuzhou 350116,China)
出处
《电力电子技术》
CSCD
北大核心
2018年第9期60-62,共3页
Power Electronics
基金
福建省自然科学基金项目(2014J01179)
关键词
逆变器
电流纹波
低频
inverter
current ripple
low frequency
