A High Gain Split-Source Boost Inverter Structure Based on a Trans-Z Impedance-Source Network and Modified Space Vector Modulation

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Document Type : Original Article

Authors

1 Department of electrical engineering, Shiraz University of Technology

2 Electrical and Electronics Department, Shiraz University of Technology

3 Department of Electrical Engineering , Shiraz University of Technology

10.22034/tjee.2026.69362.5087

Abstract

In DC-AC voltage conversion applications where an output voltage higher than the input voltage is required, utilization of a voltage source inverter encounters limitations. This structure usually requires an extra boosting stage, which increases the complexity of the system. Therefore, single-stage converters with boosting capability have been proposed, one of the prominent types of which is the split source inverter. In this paper, a new structure of this type of inverter based on an impedance network is introduced with the purpose of increasing the output voltage gain. The proposed structure has a quadratic boost factor and is controlled by two parameters, duty cycle and turns ratio. Considering the specific switching requirements of the inverter, the modified space vector modulation method is used, and the method of generating pulses and the relevant equations are explained. Also, the principles of inverter operation in different operating modes and its mathematical analysis in steady state conditions are presented. To prove the system's proper operation and verify theoretical analysis, simulations are performed, and an experimental prototype of the system is built. The results indicate the proper performance of the converter and well compliance with theory.

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Tabriz Journal of Electrical Engineering

Articles in Press, Corrected Proof
Available Online from 11 April 2026

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