Title :
Space Vector PWM for Nine-Phase VSI with Sinusoidal Output Voltage Generation: Analysis and Implementation
Author :
Dujic, Drazen ; Jones, Martin ; Levi, Emil
Author_Institution :
Liverpool John Moores Univ., Liverpool
Abstract :
Multi-phase machines are nowadays considered for various applications due to the advantages that they offer when compared to their three-phase counterparts. Established three-phase drive control principles can be easily extended to multi-phase drives. However, development of a proper pulse width modulation scheme (PWM) is necessary in order to establish full control over the harmonic content of output voltages generated by multi-phase voltage source inverters (VSIs). This paper presents an analysis of pulse width modulation for a nine-phase VSI, based on space vector approach. Sinusoidal output voltage generation is elaborated and continuous PWM scheme is analysed in the linear region. Detailed implementation steps are presented together with experimental results obtained from a DSP controlled nine- phase VSI supplying a star-connected load.
Keywords :
PWM invertors; digital signal processing chips; harmonic analysis; DSP control; harmonic content; multiphase machines; nine-phase VSI; pulse width modulation scheme; sinusoidal output voltage generation; space vector PWM; space vector approach; three-phase drive control principles; voltage source inverters; Functional analysis; Harmonic analysis; Industrial Electronics Society; Leg; Machine windings; Notice of Violation; Pulse width modulation; Space vector pulse width modulation; Switches; Voltage;
Conference_Titel :
Industrial Electronics Society, 2007. IECON 2007. 33rd Annual Conference of the IEEE
Conference_Location :
Taipei
Print_ISBN :
1-4244-0783-4
DOI :
10.1109/IECON.2007.4459905