Switching Loss Reduction and Simulation of quasi Z-Source Inverter System Fed BLDC Motor

Abstract

Abstract: The major players in renewable energy generation are photovoltaics (PV), wind farms, fuel cell, and biomass. These distributed power generation sources are widely accepted for microgrid applications. BLDC motor is connected at the output side which acts as a load and efficiently utilizes the power obtained from renewable energy generation. This obtained power is used to run the BLDC motor through quasi Z source inverter. qZSI provides high boost voltage capability and highly efficient single stage boost conversion. The main feature of qZSI is power factor correction. The qZSI employs a unique impedance network that couples the inverter main circuit to the dc source and load. quasi-Z-source inverter has high efficiency and the input current is continuous, suppress inrush current and avoid shoot through fault in inverter when compared to Z-source inverter. The proposed topology of   BLDC motor is to reduce input current ripple and delivering improved THD. The operating principal of the proposed quasi-Z-source inverter based BLDC motor is described and Matlab/Simulink simulation is presented to verify the proposed concept and theoretical analysis