Abstract
This paper presents an eigenvalue-based impedance stability analytical method of multiple paralleled grid-connected inverter system. Different from the conventional impedance-based stability criterion, this work first built the state-space model of paralleled grid-connected inverters. On the basis of this, a bridge between the state-space-based modelling and impedance-based stability criterion is presented. The proposed method is able to perform stability assessment locally at the connection points of the component. Meanwhile, the eigenvalue-based sensitivity analysis is adopted to identify the root causes of harmonic resonance, which thus combines the advanced merits of the two worlds, and enhances the analytical ability to perform a harmonic resonance assessment. Simulations and experimental results are provided to demonstrate the effectiveness of the proposed method.
Original language | English |
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Title of host publication | Proceedings of the 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia) |
Number of pages | 6 |
Publisher | IEEE Press |
Publication date | Jun 2017 |
Pages | 2070-2075 |
ISBN (Print) | 978-1-5090-5157-1 |
DOIs | |
Publication status | Published - Jun 2017 |
Event | 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia) - Kaohsiung, Taiwan, Province of China Duration: 3 Jun 2017 → 7 Jun 2017 |
Conference
Conference | 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia) |
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Country/Territory | Taiwan, Province of China |
City | Kaohsiung |
Period | 03/06/2017 → 07/06/2017 |
Keywords
- Inverters
- Impedance
- Power system stability
- Stability criteria
- State-space methods
- Eigenvalues and eigenfunctions