Resonance damping and torsional vibration issues in inverter-fed motor drive systems
The core module of renewable energy power generation system is grid connected inverter. LCL-based grid-connected inverter is widely valued because of its superior high frequency harmonic suppression ability. LCL-filter has better high frequency harmonic attenuation and better filtering effect, but r...
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| Format: | Thesis-Master by Coursework |
| Language: | English |
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Nanyang Technological University
2021
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| Online Access: | https://hdl.handle.net/10356/152059 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | The core module of renewable energy power generation system is grid connected inverter. LCL-based grid-connected inverter is widely valued because of its superior high frequency harmonic suppression ability. LCL-filter has better high frequency harmonic attenuation and better filtering effect, but resonance suppression should be considered. In this dissertation, the inherent damping characteristic of LCL-filters is used to improve the resonance suppression. Two-mass drive system has the problem of torsional vibration when the torsion changes instantaneously. This issue can be solved using the same method as the LCL-filters. Both systems are modeled and simulated in PLECS to find the effect of resonance suppression or torsional vibration suppression. The two systems will be compared with each other. |
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