摘要
基于Z拓扑的逆变系统,需在开关控制信号中加入直通信号。传统的滞环控制算法无法实现。针对这一局限,提出一种新的适用于Z拓扑的定频电流滞环控制策略。该策略保留了传统滞环控制的优点;采用定频控制,降低了系统损耗,便于滤波;有了Z源的升压作用,系统功率输出能力明显提高。通过MATLAB仿真,并经过实验验证,证明了该策略的可行性。
Z source based power inverter system,for Z topology,shoot through time must be added in the switch signals.Traditional hysteresis control algorithm can not be achieved.In response to this limitation,this paper presents a new kind of control algorithm based on fixed-frequency current hysteresis.The strategy retains the advantages of traditional hysteresis control.Because it is a fixed-frequency control,system loss was reduced,and it was easy to filter.With the boosting role of Z source,power output capability of system was improved significantly.By simulation with MATLAB and after experiments,the correctness of the stategy was proved.
出处
《高压电器》
CAS
CSCD
北大核心
2012年第3期63-66,共4页
High Voltage Apparatus
关键词
Z源逆变器
电流滞环
直通时间
参考电流
Z-source inverter
current hysteresis
shoot through time
reference current
