Variable Parameter Loss Analysis and Loss Minimization Control of Leakage Flux Controllable Permanent Magnet In-wheel Motor

QUAN Li; LU Zhichao; ZHU Xiaoyong; XU Lei; FAN Wenjie

doi:10.13334/j.0258-8013.pcsee.240721

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Variable Parameter Loss Analysis and Loss Minimization Control of Leakage Flux Controllable Permanent Magnet In-wheel Motor

更新时间：2026-10-12

- Variable Parameter Loss Analysis and Loss Minimization Control of Leakage Flux Controllable Permanent Magnet In-wheel Motor
- Issue 21, Pages: 8566-8578(2025)
- 作者机构：
  
  江苏大学电气信息工程学院,江苏省,镇江市,212013
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.240721
  CLC：
- Published：2025
- 稿件说明：
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QUAN Li, LU Zhichao, ZHU Xiaoyong, et al. Variable Parameter Loss Analysis and Loss Minimization Control of Leakage Flux Controllable Permanent Magnet In-wheel Motor[J]. 2025, (21): 8566-8578.
DOI：

QUAN Li, LU Zhichao, ZHU Xiaoyong, et al. Variable Parameter Loss Analysis and Loss Minimization Control of Leakage Flux Controllable Permanent Magnet In-wheel Motor[J]. 2025, (21): 8566-8578. DOI： 10.13334/j.0258-8013.pcsee.240721.

摘要

针对漏磁通可控永磁(leakage flux controllable permanent magnet，LFC-PM)轮毂电机中气隙有效磁通随电流变化导致电机损耗增加、电机运行效率低等问题，该文提出一种变参数最小损耗控制策略。分析LFC-PM轮毂电机磁通变化与铁心损耗分布特征，构建电机铁心损耗与参数变化的映射关系模型，推导考虑变参数铁损支路的LFC-PM轮毂电机数学模型。在此基础上，以损耗最小为原则，构造拉格朗日函数，并将电机运行区间分为轻载区、中载区和高载区，分别求解各个运行区间的最优电流分配值。最后，基于LFC-PM轮毂电机样机实验平台，与两种最大转矩电流比控制(maximum torque per ampere，MTPA)策略进行对比，验证所提控制策略的正确性和有效性。

Abstract

To address the issues of increasing loss and low efficiency in the leakage flux controllable permanent magnet(LFC-PM) in-wheel motor caused by the variable flux

a variable-parameter-loss-based loss minimization control strategy is proposed. Based on the analysis of flux change and core loss distribution of LFC-PM in-wheel motor

a mapping relationship model between core loss and variable parameters is established. Moreover

a mathematical model for the LFC-PM in-wheel motor

considering a variable parameter core loss branch

is derived. On this basis

a Lagrange function is constructed using the principle of minimum loss

where the motor's operating range is divided into light load area

medium load area

and heavy load area

and the optimal current distribution values in each operation range are solved. Finally

based on an LFC-PM in-wheel motor prototype and experimental setups

a comparison was conducted between the proposed control strategy and two maximum torque per ampere(MTPA) control strategies. The results verified the validity and effectiveness of the proposed control strategy.

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