Enhancing Power Quality in Distributed Energy Resource Systems Through Permanent Magnet Retrofitting of Single-Phase Induction Motors

Huan Wang (), Fangxu Han, Renjie Fu and Bo Zhang
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Huan Wang: School of Electrical Engineering, Shenyang Institute of Engineering, Shenyang 110136, China
Fangxu Han: School of Electrical Engineering, Shenyang Institute of Engineering, Shenyang 110136, China
Renjie Fu: School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China
Bo Zhang: School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China

Energies, 2025, vol. 18, issue 15, 1-13

Abstract: Distributed energy resource systems offer improved energy utilization and reduced transmission losses by decentralizing power generation and load management. However, the power quality is often compromised by inefficient customer-side equipment, such as single-phase induction motors, which suffer from low efficiency and poor power factor. To address this issue, this paper proposes a permanent magnet retrofitting method for single-phase induction motors, which replaces the squirrel-cage rotor with a permanent magnet rotor while preserving the original stator and winding structure. The proposed method aims to enhance motor performance without significant structural changes. A single-phase induction motor was retrofitted using the proposed method, and its performance was evaluated through finite element simulations to verify the effectiveness of the design approach. This study also investigated the key factors influencing motor starting performance after the introduction of permanent magnets. This study presents a practical and effective method for the permanent magnet retrofitting of single-phase induction motors, which contributes to improving motor efficiency and enhancing power quality in distributed energy resource systems.

Keywords: distributed energy resource systems; single-phase induction motors; permanent magnet (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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