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Content Provider | IET Digital Library |
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Author | Yuan, Qingwei Zhao, Rongxiang |
Abstract | The adjustable speed range for three-phase four-switch inverter (TPFSI) fed permanent magnet synchronous motor (PMSM) drives is seriously limited by the DC-link capacitor voltage offset in TPFSI. For the traditional offset suppression schemes, the low-pass filters or notch filters are necessary to extract the capacitor voltage offset, which will deteriorate the control performance of the offset suppression schemes severely, especially for the low-speed range. Thus, a novel offset suppression scheme with no filters is proposed to improve the situation. For the proposed scheme, to extract the offset with no filters, a new static coordinate is defined, the relationships between the fundamental/offset components of capacitor voltages and the load currents are revealed, based on which a simple algorithm is developed. Then, the desired compensatory current is obtained by a closed-loop control and injected into the stator current control loop. Experimental results have validated the proposed scheme. |
Starting Page | 746 |
Ending Page | 748 |
Page Count | 3 |
ISSN | 00135194 |
Volume Number | 53 |
e-ISSN | 1350911X |
Issue Number | Issue 11, May (2017) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/el/53/11 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/el.2017.0188 |
Journal | Electronics Letters |
Publisher Date | 2017-05-11 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Adjustable Speed Range Closed Loop System Closed-loop Control System Compensatory Current Control of Electric Power System Current Control Dc-link Capacitor Voltage Offset Suppression Drive Electric Current Control Fundamental Component Invertors Load Current Machine Control Offset Component Permanent Magnet Motors Static Coordinate Stator Current Control Loop Synchronous Machine Synchronous Motor Drive Three-phase Four-switch Inverter Fed PMSM Drive TPFSI Fed Permanent Magnet Synchronous Motor Drive |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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