International Journal of Applied Research
Vol. 3, Issue 1, Part A (2017)
Comparative study of quasi Z-source and Trans Z-source inverter for PV applications
S Anusha and J Srinivasa Rao
The quasi-Z-source inverter (qZSI) with battery operation can balance the stochastic fluctuations of photovoltaic (PV) power injected to the induction motor. Due to increase in the power demand, generation demand also has been rapidly increased. Hence the Photo Voltaic systems acts as major role in the renewable energy resources, in order to use these energy in the domestic appliances inverter has to be used. In the conventional Inverter the harmonic content is high and losses are more due to the switches. In order to reduce these problems, a new photovoltaic system based on trans-Z-source inverter (Trans-ZSI) is proposed. This inverter has been derived from quasi Z- source inverter recently. Trans Z-source network consists of one transformer and one capacitor. While maintaining all prominent features of pervious Z-source inverters, Trans-z-source inverter has several unique advantages such as increased voltage gain, reduced voltage stress and reduced components of impedance network. Due to these features, using trans Z-source inverter as a single stage converter in photovoltaic systems gives satisfactory results. In this concept the application of trans-ZSI in photovoltaic systems in both stand alone mode and grid connected mode has been investigated. Electronic loads are a family of power converters which can be used as a variable impedance load in different applications. It can achieve a high efficiency which reduces the system cost. The validity of this proposed method has been studied by the Matlabz/simulink software.
How to cite this article:
S Anusha, J Srinivasa Rao. Comparative study of quasi Z-source and Trans Z-source inverter for PV applications. Int J Appl Res 2017;3(1):18-22.