Title :
New Direct Power Control Strategies of Three-Phase VSIs for the Minimization of Common-Mode Emissions in Distributed Generation Systems
Author :
Cirrincione, Maurizio ; Pucci, Marcello ; Vitale, Gianpaolo
Author_Institution :
Univ. de Technol. de Belfort-Montbeliard, Belfort
Abstract :
This paper presents two new direct power control (DPC) strategies of three-phase grid connected VSIs for distributed generation, devised for the minimization of common- mode emissions. These strategies have been called DPC-EMC 1 (electro magnetically compatible) and DPC-EMC 2. Both of them reduce the common-mode emissions of the VSI by using either even or odd voltage vectors in each of the six sectors in which the grid voltage lies, without using any null vector. DPC- EMC 2 outperforms DPC-EMC 1 in terms of harmonic content of the injected current and ripple of the active and reactive power waveforms, especially for low DC link voltage/grid voltage ratios. These approaches permit the common-mode emissions to be reduced in comparison with the classic DPC algorithm, at the expense of a slight increase of the harmonic content of the injected current waveform. An experimental comparison among the classic DPC, DPC-EMC 1 and DPC-EMC 2 is presented in terms of dynamic performance, harmonic content of the injected current and harmonic content of the common-mode voltage.
Keywords :
distributed power generation; electromagnetic compatibility; invertors; power system control; reactive power control; DPC-EMC 1; DPC-EMC 2; common-mode emissions; direct power control strategies; distributed generation systems; electromagnetically compatibility; harmonic content; injected current waveform; reactive power waveforms; three-phase VSI; three-phase voltage source inverters; Current control; Distributed control; Electromagnetic compatibility; Electromagnetic interference; Frequency; Inverters; Power control; Reactive power; Rectifiers; Voltage control;
Conference_Titel :
Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-1259-4
Electronic_ISBN :
0197-2618
DOI :
10.1109/07IAS.2007.298