A Voltage Injection-Based Current Harmonics Suppression Strategy for Six-Phase PMSM With Nonsinusoidal Back EMF

Das, Partha Pratim; Satpathy, Subhransu; Bhattacharya, Subhashish

doi:10.1109/jestie.2023.3337724

A Voltage Injection-Based Current Harmonics Suppression Strategy for Six-Phase PMSM With Nonsinusoidal Back EMF

Journal Article · Wed Nov 29 00:00:00 EST 2023 · IEEE Journal of Emerging and Selected Topics in Industrial Electronics

DOI:https://doi.org/10.1109/jestie.2023.3337724· OSTI ID:2562643

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North Carolina State University, Raleigh, NC (United States)

This article presents a voltage injection-based current harmonic minimization method for wide bandgap device-based six-phase permanent magnet synchronous machine (PMSM) drives. The presence of low-order harmonics is common in the back EMF of PMSMs with low slot and high pole numbers. The back EMF harmonics generate low-order harmonic currents that increase torque ripples. Furthermore, zero-sequence current (ZSC) is also observed if all six phases are connected to a common neutral point. ZSC does not affect the torque ripple but reduces the system efficiency. A special technique is required to reduce ZSC for variable speed drives as direct ac component to synchronous reference frame (SRF) dc transformation is not possible for ZSC. In this article, a voltage injection-based current harmonics reduction method is proposed. The injected harmonic voltage coefficients are calculated from the harmonic estimations of back EMF and updated using closed-loop harmonic compensators to improve steady-state performance. For ZSC reduction, third harmonics power controller, and for 6n ± 1 (n = 1, 2,...) order harmonic current reduction, SRF current controllers are presented in this article. Furthermore, the current harmonics minimization method is experimentally verified using a GaN-based three-level active neutral point clamped inverter-driven six-phase PMSM.

View Accepted Manuscript (DOE)

Research Organization:: North Carolina State University, Raleigh, NC (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)

Grant/Contract Number:: EE0008705

OSTI ID:: 2562643

Journal Information:: IEEE Journal of Emerging and Selected Topics in Industrial Electronics, Journal Name: IEEE Journal of Emerging and Selected Topics in Industrial Electronics Journal Issue: 1 Vol. 5; ISSN 2687-9735

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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42 ENGINEERING
Current harmonics
multilevel inverter
multiphase drives
nonsinusoidal back EMF
permanent magnet synchronous machine (PMSM)

A Voltage Injection-Based Current Harmonics Suppression Strategy for Six-Phase PMSM With Nonsinusoidal Back EMF

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