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Filter design at the output of the inverter in PMSM drives

Filter design at the output of the inverter in PMSM drives PurposeThis paper aims to describe a simple low-pass filter to suppress torque pulsation and current harmonics in permanent magnet synchronous motor (PMSM) drives.Design/methodology/approachFor the control of the PMSM, a field-oriented control algorithm is always used. The proposed filter is actually a resistance, inductance, capacitance (RLC) filter. At the output of the inverter and the input of PMSM, an RLC filter is connected. This filter suppresses current harmonics through filtering phase voltage harmonics. Analysis of the filter is achieved through frequency characteristics analysis.FindingsThis filter can effectively filter out the harmonic of phase voltage. Both the simulation and experiment results show that the proposed filter can effectively suppress torque pulsation and current harmonics in PMSM drives. Also, the method of selecting filter parameters and the whole control system are very simple.Research limitations implicationsThe filter increases the design cost of the system.Practical implicationsThe harmonics and torque ripple of phase current are greatly suppressed. Also, the loss of the PMSM reduced.Originality/valueThe method of selecting filter parameters and the analysis of the proposed filter are proposed for the first time. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering Emerald Publishing

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References (20)

Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0332-1649
DOI
10.1108/COMPEL-04-2016-0169
Publisher site
See Article on Publisher Site

Abstract

PurposeThis paper aims to describe a simple low-pass filter to suppress torque pulsation and current harmonics in permanent magnet synchronous motor (PMSM) drives.Design/methodology/approachFor the control of the PMSM, a field-oriented control algorithm is always used. The proposed filter is actually a resistance, inductance, capacitance (RLC) filter. At the output of the inverter and the input of PMSM, an RLC filter is connected. This filter suppresses current harmonics through filtering phase voltage harmonics. Analysis of the filter is achieved through frequency characteristics analysis.FindingsThis filter can effectively filter out the harmonic of phase voltage. Both the simulation and experiment results show that the proposed filter can effectively suppress torque pulsation and current harmonics in PMSM drives. Also, the method of selecting filter parameters and the whole control system are very simple.Research limitations implicationsThe filter increases the design cost of the system.Practical implicationsThe harmonics and torque ripple of phase current are greatly suppressed. Also, the loss of the PMSM reduced.Originality/valueThe method of selecting filter parameters and the analysis of the proposed filter are proposed for the first time.

Journal

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic EngineeringEmerald Publishing

Published: Jan 3, 2017

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