Ride through Strategy for a Three-Level Dual Z-Source Inverter Using TRIAC  

作　　者：A. Nazar Ali Dr. R. Jeyabharath A. Nazar Ali;Dr. R. Jeyabharath(K. Ramakrishnan College of Technology, Trichy, Tamilnadu, India;K.S.R Institute for Engineering and Technology, Namakkal, Tamilnadu, India)

机构地区：[1]K. Ramakrishnan College of Technology, Trichy, Tamilnadu, India [2]K.S.R Institute for Engineering and Technology, Namakkal, Tamilnadu, India

出　　处：《Circuits and Systems》2016年第11期3911-3921,共11页电路与系统（英文）

摘　　要：A new ride through strategy is introduced in a three-level dual Z-source inverter, for isolation under semiconductor switching failure condition. Here the output will have no significant decrease in the amplitude and quality. Instead of diodes, the triacs are added to the inverter source ends, as it can perform a bidirectional power transfer also it can operate well in both low and high voltage operating conditions. The faulted part can be isolated by simply altering the firing pulses for turning on/off the triacs using the carrier based SPWM technique and resulting in a boosting output with zero common mode voltage. Consequently, it forms a common floating point or null point with a zero common mode voltage. It is experimentally verified by using MATLAB, and digital oscilloscope.A new ride through strategy is introduced in a three-level dual Z-source inverter, for isolation under semiconductor switching failure condition. Here the output will have no significant decrease in the amplitude and quality. Instead of diodes, the triacs are added to the inverter source ends, as it can perform a bidirectional power transfer also it can operate well in both low and high voltage operating conditions. The faulted part can be isolated by simply altering the firing pulses for turning on/off the triacs using the carrier based SPWM technique and resulting in a boosting output with zero common mode voltage. Consequently, it forms a common floating point or null point with a zero common mode voltage. It is experimentally verified by using MATLAB, and digital oscilloscope.

关 键 词：Common Mode Voltage Fault Compensation Three-Level Inverter Sinusoidal Pulse Width Modulation Z-Source Inverter 

分 类 号：TM4[电气工程—电器]