Five Leg Z-Source Inverter Feeding TwoIndependent Loads Simultaneously

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering

article

P. Raja Reddy¹  D.V. Ashok Kumar² 

[1] Department of EEE ,(Power Electronics), RGM College of Engineering;Department of EEE, Syamaladevi institute of Technology for women

关键词: Five-Leg Inverter (FLI);    Z-source FLI;    High Performance Z-source FLI;    PWM techniques;   

DOI  :  10.15662/ijareeie.2014.0309066

来源: Research & Reviews

【 摘 要 】

This paper presents control methods for controlling two independent loads simultaneously by using five-leg ZSource Inverter and High-Performance Z-Source Inverter. In recent years, five-leg inverter has been proposed. This inverter can control two three-phase loads independently at a time, this inverter has five legs,each leg consists of two switching devices and total ten switching devices. AandB phases of both loads are connected in each leg respectively whereas C phase of both loads is connected in common leg. In five-leg inverter, C phase of the loads are connected in the common leg, it causes difference from a switching pattern of C phase in two loads. For this reason, the modulation methods of a three leg inverter can’t be used for the fiveleg inverter. Many modulation methods for the five-leg inverter have been proposed, but Voltage Utility Factor is 50% in these methods. This paper proposes a novel structure for Z-source five-leg inverter. First, the construction of five-leg inverter, Z-source five-leg inverter is introduced and then PWM modulation methods for the Z-source five-leg inverter are elaborated. Consequently, it is shown with Z-source one can improve Voltage Utility Factor in five-leg inverter. In the end, the validity of the method is verified by simulations.

【 授权许可】

Unknown