Current control for single-inverter-fed series-connected five-phase PMSMs

Hung-Chi Chen, Chong Xian Su

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

Recently, the advantage of multiphase drive (>3) is demonstrated by a novel system composed of series-connected five-phase induction motors (IMs) and single inverter where their IM windings are connected in series. Due to the additional degree of freedom provided by five-phase AC motors, two IM speeds can be regulated independently. In this paper, high-efficiency series-connected five-phase permanent magnet synchronous motors (PMSMs) are used. In order to regulate two PMSM speeds independently, two decoupled speed loops are designed in the control structure and each generates the corresponding current command set. The sums of the two current command sets become the desired currents and the five current controllers are used to generate the final switching signals to obtain the desired currents. In the equivalent model of PMSM current loop, back-electromotive forces (back-EMFs) and parameter differences can be seen as disturbances. In order to reduce the effects of the equivalent disturbances and improve the current tracking performance, a robust feedforward current control (RFCC) is used. The simulation and experimental results are provided and they also demonstrate the proposed RFCC.

Original languageEnglish
Title of host publication2013 IEEE International Symposium on Industrial Electronics, ISIE 2013
DOIs
StatePublished - 22 Aug 2013
Event2013 IEEE 22nd International Symposium on Industrial Electronics, ISIE 2013 - Taipei, Taiwan
Duration: 28 May 201331 May 2013

Publication series

NameIEEE International Symposium on Industrial Electronics

Conference

Conference2013 IEEE 22nd International Symposium on Industrial Electronics, ISIE 2013
CountryTaiwan
CityTaipei
Period28/05/1331/05/13

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