Abstract
The output impedance model of voltage-source inverter is established based on the analysis of its topology and control strategy. The influence of its filter parameters and control loop gain on its output impedance, equivalent loop gain and system stability is analyzed by the impendence analysis method, the correctness of which is verified by the time-domain analysis method. Since the multiple inverters of islanded microgrid are connected in parallel, a method to judge the stability of admittance domain is proposed and the quantized criterion of stability between inverter output admittance and load input admittance is given. The system stability of microgrid can be ensured by the proper design of micro-source output admittance. Simulative and experimental results demonstrate the correctness and feasibility of the proposed method.
| Original language | English |
|---|---|
| Pages (from-to) | 19-25 |
| Number of pages | 7 |
| Journal | Dianli Zidonghua Shebei/Electric Power Automation Equipment |
| Volume | 33 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 2013 |
| Externally published | Yes |
Keywords
- Admittance specification
- Electric inverters
- Microgrid
- Models
- Output impedance
- Stability
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