Title :
Pulse width modulation for reduction of power losses in three-phase neutral point clamped inverters
Author :
Andrade, Abinadabe S. ; Barros, Luciano M. ; Silva, Edison R C da ; Jacobina, Cursino B.
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Campina Grande, Campina Grande, Brazil
Abstract :
This paper investigates the digital implementation of a modulation strategy that can completely remove the low-frequency voltage oscillation, which appears in the neutral point, for all the operating points and for any kind of loads. The implementation is based on a hybrid modulation technique that produces low switching losses and is simple to implement. Losses, average switching frequency, and performance in terms of voltage balance and low frequency neutral point oscillation, THD, and WTHD are investigated. Simulation and experimental results confirm the feasibility of the approach.
Keywords :
PWM invertors; WTHD; digital implementation; hybrid modulation technique; low frequency neutral point oscillation; low switching losses; low-frequency voltage oscillation removal; power losses reduction; pulse width modulation; three-phase neutral point clamped inverters; voltage balance; Capacitors; Inverters; Oscillators; Pulse width modulation; Switches; Switching frequency;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2012 IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
978-1-4673-0802-1
Electronic_ISBN :
978-1-4673-0801-4
DOI :
10.1109/ECCE.2012.6342601
