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2025•Unpublished venueOpen access

MODELLING AND SIMULATION OF PWM BASED Z- SOURCE INVERTER USING MATLAB/SIMULINK

Mohit Tyagi, Atul Kumar Kushwaha

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Abstract

Voltage Source and Current Source Inverters have some common problems. The Z-Source Inverter is a novel power conversion topology that can buck and boost the input voltage using passive components. With its unique structure, Z-Source Inverter can utilize the shoot through states to boost the output voltage and provides an attractive single stage DC to AC conversion that is able to buck and boost the voltage. The shoot-through duty cycle is used for controlling the DC link voltage boost and hence the output voltage boost of the inverter. In this paper MATLAB/SIMULINK model of Z-Source Inverter has been developed and harmonics analysis is carried out. Simulation results and harmonics analysis are compared with traditional inverters. It is found that for 0.1 pulse width the Total Harmonics Distortion (THD) and Weighted Total Harmonics Distortion (WTHD) are 0.22% and 0.08% respectively.

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What this paper is about

Voltage Source and Current Source Inverters have some common problems. The Z-Source Inverter is a novel power conversion topology that can buck and boost the input voltage using passive components. With its unique structure, Z-Source Inverter can utilize the shoot through states to boost the output voltage and provides an attractive single stage DC to AC conversion that is able to buck and boost the voltage. The shoot-through duty cycle is used for controlling the DC link voltage boost and hence the output voltage boost of the inverter. In this paper MATLAB/SIMULINK model of Z-Source Inverter has been developed and harmonics analysis is carried out. Simulation results and harmonics analysis are compared with traditional inverters. It is found that for 0.1 pulse width the Total Harmonics Distortion (THD) and Weighted Total Harmonics Distortion (WTHD) are 0.22% and 0.08% respectively.

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Available abstract

Voltage Source and Current Source Inverters have some common problems. The Z-Source Inverter is a novel power conversion topology that can buck and boost the input voltage using passive components. With its unique structure, Z-Source Inverter can utilize the shoot through states to boost the output voltage and provides an attractive single stage DC to AC conversion that is able to buck and boost the voltage. The shoot-through duty cycle is used for controlling the DC link voltage boost and hence the output voltage boost of the inverter. In this paper MATLAB/SIMULINK model of Z-Source Inverter has been developed and harmonics analysis is carried out. Simulation results and harmonics analysis are compared with traditional inverters. It is found that for 0.1 pulse width the Total Harmonics Distortion (THD) and Weighted Total Harmonics Distortion (WTHD) are 0.22% and 0.08% respectively.

Key concepts: Total harmonic distortion, Harmonics, Pulse-width modulation, Z-source inverter, Inverter, Duty cycle, Voltage source, Voltage

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MODELLING AND SIMULATION OF PWM BASED Z- SOURCE INVERTER USING MATLAB/SIMULINK — Research Paper | ScholarLens