Title :
Dual three-phase system based on four neutral-point-clamped inverters with synchronized space-vector modulation
Author :
Oleschuk, V. ; Gregor, Raul ; Rodas, Jorge ; Giangreco, Alejandro
Author_Institution :
Inst. of Power Eng., Kishinau, Moldova
Abstract :
Algorithms of synchronized pulsewidth modulation (PWM), based on special space-vector control scheme (with utilization of minimal number of voltage space vectors), have been applied for synchronous control of four neutral-point-clamped (NPC) inverters feeding six-phase (dual three-phase) drive on the base of asymmetrical open-end windings induction motor. It allows providing continuous synchronization and symmetry of the phase voltage of system during the whole control range for any ratio of voltage magnitudes of DC-sources, and for any configuration of DC-sources. Also, in this case four inverters of the system can be supplied by reduced number of insulated DC-sources (by one/two/three DC-sources instead of four DC-sources for standard system topology based on four two-level inverters.
Keywords :
PWM invertors; clamps; electric current control; induction motor drives; machine insulation; machine vector control; machine windings; synchronisation; voltage control; NPC; PWM algorithm; asymmetrical open-end windings induction motor; dual three-phase system; insulation; neutral-point-clamped inverter; one-two-three DC-source configuration; phase voltage symmetry; six-phase drive system; space-vector control scheme; standard system topology; synchronized pulsewidth modulation algorithm; synchronized space-vector modulation; synchronous control; two-level inverter; voltage magnitudes control; Inverters; Pulse width modulation; Switches; Synchronization; Vectors; Voltage control; Converter control; Modulation strategy; Multiphase drive; Simulation; Voltage Source Inverters (VSI);
Conference_Titel :
Power Electronics and Applications (EPE), 2013 15th European Conference on
Conference_Location :
Lille
DOI :
10.1109/EPE.2013.6634369
