Journal: IEEE Transactions on Industrial Electronics
Authors: Ye-Na Bae, Jun-Yeol Ryu, Myung-Seop Lim
DOI: 10.1109/TIE.2026.3704772
This article proposes a control-aware design framework to predict and mitigate voltage harmonics induced by harmonic-current suppression control in dual three-phase permanent magnet synchronous machines (DTP-PMSMs). Using the DZ – QZ equivalent model, the control-induced voltage-harmonic components are mathematically defined and quantitatively evaluated through finite-element analysis (FEA), enabling voltage-utilization assessment under specified inverter voltage and current constraints. At the design stage, design of experiments (DOE)-based sensitivity analysis and analysis of variance (ANOVA) are used to identify effective design variables governing voltage harmonics and their coupling with torque ripple and loss, and representative designs are selected through tradeoff and Pareto-front analyses. FEA results in the target high-speed flux-weakening region show that the voltage-harmonic-prioritized design and the balanced-performance design improve the voltage-utilization factor Kv by up to 19% and 12%, respectively, compared with the base model. Prototype tests within the available experimental speed range show that the FEA-quantified voltage harmonics agree with measurements within a 10%–20% error range. The improved design substantially reduces the measured voltage harmonics and more effectively suppresses speed-dependent amplification of control-induced voltage harmonics than the base model under the tested conditions.