The novel digital control restraining circulating currents strategy based on tracing the transient average current in parallel inverter system
- Resource Type
- Conference
- Authors
- Shi, Lvhua; Shan, Hongtao; Kang, Yong
- Source
- The 2nd International Symposium on Power Electronics for Distributed Generation Systems Power Electronics for Distributed Generation Systems (PEDG), 2010 2nd IEEE International Symposium on. :329-332 Jun, 2010
- Subject
- Power, Energy and Industry Applications
Components, Circuits, Devices and Systems
Inverters
Impedance
Transient analysis
Voltage control
Reactive power
Uninterruptible power systems
Feedback control
parallel
inverter
digitalcontrol
circulating current
- Language
- ISSN
- 2329-5759
2329-5767
The conventional method by power regulation to restrain the circulating current is affected by the parallel impedance and has other disadvantages in the response speed and harmonic component of circulating current, etc. The strategy to restrain circulating current based on tracing transient average current feedback was proposed in the paper by the combination of tracing transient average current feedback control and power regulation strategy. The mathematical model of the strategy based on tracing the transient average current was analyzed. It is discussed that is the characteristic of the power regulation after introducing to tracing the transient average current and new digital simplified power detection technique in the parallel inverter system. The relevant experiments on the novel strategy by the combination of tracing transient average current were verified the better characteristic of restraining the circulating current by the results of the experiment in two-parallel-inverter system.