Title :
Research on the Technology of the Neutral-Point Voltage Balance and Dual-Loop Control Scheme for Three-Level PWM Inverter
Author :
Lu, Chaoying ; Yang, Shuying ; Wei, Xinfeng ; Zhang, Xing
Author_Institution :
Sch. of Electr. Eng. & Autom., Hefei Univ. of Technol., Hefei, China
Abstract :
A mathematical model of the three-level PWM inverter is set up. The dual close-loop control of DC motor is applied to three-level PWM inverter. As a result, the three-level inverter has favorable dynamic and steady state performance, sinusoidal input current and unity power factor. A simple three-level SVPWM algorithm with reference voltage vector decomposition presents in this paper. A neutral-point balancing control method is employed, by adjusting the times of positive small vectors and negative small vectors. Finally, computer simulations show the superiority of the method.
Keywords :
DC motors; PWM invertors; closed loop systems; machine control; power factor; voltage control; DC motor; computer simulations; dual close-loop control; dynamic state performance; mathematical model; negative small vectors; neutral-point voltage balance control scheme; positive small vectors; reference voltage vector decomposition; sinusoidal input current; steady state performance; three-level PWM inverter; three-level SVPWM algorithm; unity power factor; Inverters; Mathematical model; Space vector pulse width modulation; Support vector machine classification; Vectors; Voltage control;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific
Conference_Location :
Shanghai
Print_ISBN :
978-1-4577-0545-8
DOI :
10.1109/APPEEC.2012.6307127
