DC-Link Voltage Gain Enhancement Using Z-Source Converter in Vector Controlled Interior Permanent Magnet Synchronous Motor Drives

Yazdani, Sajjad; Rahideh, Akbar; Rajaei, Amirhossein; Sepahkar, Mohammadbagher

doi:10.30503/eecs.2026.572900.1079

DC-Link Voltage Gain Enhancement Using Z-Source Converter in Vector Controlled Interior Permanent Magnet Synchronous Motor Drives

Articles in Press

Document Type : Original Article

Authors

Sajjad Yazdani ¹

Akbar Rahideh ²

Amirhossein Rajaei ³

Mohammadbagher Sepahkar ⁴

¹ Department of Electrical Engineering, Shiraz University of Technology, Shiraz, I.R. Iran

² Shiraz University of Technology

³ Department of Electrical Engineering, Shiraz University of Technology, Shiraz, Iran

⁴ Department of Electrical and Computer Engineering, Kashan University, Kashan, Iran

10.30503/eecs.2026.572900.1079

Abstract

In this paper, the vector control of an interior permanent magnet synchronous motor (IPMSM) with a Z-source inverter (ZSI) is investigated. The vector control strategy is employed to achieve independent control of speed and flux. According to the properties of the Z-source converter such as buck-boost capability and reliability, it is a proper candidate in electric drive systems. The boost capability of this converter results in the requirement of a lower DC-link voltage compared to the conventional voltage source inverter. The proposed drive system is analyzed under different operating scenarios to comprehensively assess its dynamic and steady-state performance. Furthermore, the DC-link voltage variation analysis confirms the capability of the proposed topology to maintain satisfactory motor performance under reduced input voltage conditions. The performance of the inverter in a permanent magnet synchronous motor (PMSM) drive has been evaluated. Simulation results demonstrate that the proposed drive maintains accurate speed tracking, stable torque response, and balanced stator currents under all operating conditions.

Keywords

Permanent magnet synchronous motor

Z-source converter

Speed control

Subjects