Dynamic Phasor Modeling of Multi-Converter Systems
- Resource Type
- Conference
- Authors
- Nazari, Arash; Xue, Yaosuo; Motwani, Jayesh Kumar; Cvetkovic, Igor; Dong, Dong; Boroyevich, Dushan
- Source
- 2021 IEEE Energy Conversion Congress and Exposition (ECCE) Energy Conversion Congress and Exposition (ECCE), 2021 IEEE. :2716-2721 Oct, 2021
- Subject
- Engineering Profession
General Topics for Engineers
Power, Energy and Industry Applications
Transportation
Systematics
Computational modeling
Power system dynamics
Switches
Voltage
Power system stability
Stability analysis
Interconnected voltage source inverters
Dynamic phasor model
Generalized state space average model
Computational efficiency
- Language
- ISSN
- 2329-3748
Generalized form of Dynamic Phasor (DP)-based modeling of multi-converter systems containing high order harmonics has not been proposed in the literature yet due to the complexity and large number of variables that should be included in the model. In this work a generalized form of a system-level model comprising high number of single-phase converters is presented. The proposed method can be applied to any number of single-phase voltage source converters (VSIs). Test cases of this modeling method containing 5 to 100 parallel connected single-phase voltage source inverters are modeled and simulation times are recorded. The results of the proposed method are compared and validated with conventional average models as well as detailed switching models. A systematic approach for comparing the accuracy and timestep between dynamic phasor modeling method and detailed switching model is illustrated. Advantage of DP models over conventional average models for stability assessment are also discussed at the end of the paper.