alexa Five Leg Z-Source Inverter Feeding Two Independent Loads Simultaneously
ISSN ONLINE(2278-8875) PRINT (2320-3765)

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

Five Leg Z-Source Inverter Feeding Two Independent Loads Simultaneously

P. Raja Reddy1, B.M.Manjunatha2, D.V. Ashok Kumar3
  1. PG Student, Department of EEE (Power Electronics), RGM College of Engineering, Nandyal, Andhra Pradesh, India
  2. Assistant Professor, Department of EEE, RGM College of Engineering, Nandyal, Andhra Pradesh, India
  3. Professor, Department of EEE, Syamaladevi institute of Technology for women, Nandyal, Andhra Pradesh, India
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Abstract

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

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