<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>A quasi-Z-source network is used to boost the DC bus voltage of a voltage source two-level H-bridge inverter to increase the voltage gain. With the increase in the DC bus voltage, the common mode voltage (CMV) also increases. The CMV is reduced using virtual space vector pulse width modulation (SVPWM). Due to the presence of a quasi-Z-source network, the expression of the CMV changes significantly with respect to the conventional voltage source two-level H-bridge inverter fed from a pure DC supply. In this paper, a detailed analysis of the origin of the CMV for the quasi-Z-source two-level H-bridge inverter is presented. Additionally, it is shown how the CMV is affected for a DC input supply taken from a three-phase diode bridge rectifier. The work also details the scheme for suitable placement of shoot-through time intervals required for boosting within the non-active time intervals in virtual SVPWM. The simulation and experimental results show the scheme is effective in increasing the voltage gain and reducing the CMV arising at the third harmonic of the desired output frequency by at least 33.33%.</p>
</abstract>

A quasi-Z-source network is used to boost the DC bus voltage of a voltage source two-level H-bridge inverter to increase the voltage gain. With the increase in the DC bus voltage, the common mode voltage (CMV) also increases. The CMV is reduced using virtual space vector pulse width modulation (SVPWM). Due to the presence of a quasi-Z-source network, the expression of the CMV changes significantly with respect to the conventional voltage source two-level H-bridge inverter fed from a pure DC supply. In this paper, a detailed analysis of the origin of the CMV for the quasi-Z-source two-level H-bridge inverter is presented. Additionally, it is shown how the CMV is affected for a DC input supply taken from a three-phase diode bridge rectifier. The work also details the scheme for suitable placement of shoot-through time intervals required for boosting within the non-active time intervals in virtual SVPWM. The simulation and experimental results show the scheme is effective in increasing the voltage gain and reducing the CMV arising at the third harmonic of the desired output frequency by at least 33.33%.

Quasi-Z-Source Three-Phase Voltage Source Inverter with Virtual Space Vector Modulation to Increase the Voltage Gain and for the Reduction of Common Mode Voltage

Power Electronics and Drives

This work is licensed under the Creative Commons Attribution 4.0 International License.

A quasi-Z-source network is used to boost the DC bus voltage of a voltage source two-level H-bridge inverter to increase the voltage gain. With the increase in...

Quasi-Z-Source Three-Phase Voltage Source Inverter with Virtual Space Vector Modulation to Increase the Voltage Gain and for the Reduction of Common Mode Voltage

Published Online: Apr 29, 2024

Page range: 272 - 291

Received: Dec 27, 2023

Accepted: Apr 02, 2024

DOI: https://doi.org/10.2478/pead-2024-0018

Keywords
common mode voltage, quasi-Z-source inverter, virtual space vector modulation, voltage source inverter, voltage gain

© 2024 Debalina Nanda et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Quasi-Z-Source Three-Phase Voltage Source Inverter with Virtual Space Vector Modulation to Increase the Voltage Gain and for the Reduction of Common Mode Voltage

Published Online: Apr 29, 2024

Page range: 272 - 291

Received: Dec 27, 2023

Accepted: Apr 02, 2024

DOI: https://doi.org/10.2478/pead-2024-0018

Keywordscommon mode voltage, quasi-Z-source inverter, virtual space vector modulation, voltage source inverter, voltage gain

© 2024 Debalina Nanda et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
common mode voltage, quasi-Z-source inverter, virtual space vector modulation, voltage source inverter, voltage gain