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| Content Provider | IET Digital Library |
|---|---|
| Author | Wu, Yongliao Song, Xinda Li, Hong Chen, Baodong |
| Abstract | This Letter proposes an improved repetitive controller based on Lagrangian interpolation method to suppress harmonic current in the permanent magnet synchronous motor. Harmonic current suppression performance is degraded drastically if the ratio of the sampling rate to the fundamental frequency of harmonic current is fractional. The fractional-order delay link based on Lagrange interpolation is used to approximate the delay link which is composed of the fractional part of the frequency ratio. In order to further reduce the tracking error of the current harmonics, the low-pass filter located inside the traditional repetitive controller is removed and the stability of the system is ensured by adding a phase compensator. Finally, the experimental results demonstrate the effectiveness of the proposed scheme. |
| Starting Page | 47 |
| Ending Page | 49 |
| Page Count | 3 |
| ISSN | 00135194 |
| Volume Number | 55 |
| e-ISSN | 1350911X |
| Issue Number | Issue 1, Jan (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/el/55/1 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/el.2018.7035 |
| Journal | Electronics Letters |
| Publisher Date | 2018-11-15 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Control of Electric Power System Delay Delay Link Approximation Digital Signal Processing Filtering Method in Signal Processing Fractional-order Delay Link Frequency Ratio Fundamental Frequency Harmonic Current Suppression Performance Harmonics Harmonics Suppression Improved Repetitive Controller Interpolation Interpolation And Function Approximation Lagrange Interpolation Lagrangian Interpolation Method Low-pass Filter Machine Control Numerical Analysis Permanent Magnet Motors Permanent Magnet Synchronous Motors Phase Compensator Power Harmonic Filter Power Supply Quality Sampling Rate Stability Stability in Control Theory Synchronous Machine Synchronous Motors System Stability |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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