Title :
Dynamic adaptive space vector PWM for four switch three phase inverter fed induction motor with compensation of DC - link voltage ripple
Author :
Hong Hee Lee ; Phan Quoc Dzung ; Le Dinh Khoa ; Le Minh Phuong
Author_Institution :
NARC, Ulsan Univ., Ulsan, South Korea
Abstract :
This paper presents and analyses a new dynamic adaptive space vector PWM algorithm for four-switch three-phase inverters (FSTPI) fed induction motor under DC-link voltage ripple. By using reasonable mathematical transform, Space Vector PWM technique for FSTPI under DC-link voltage imbalance or ripples has been proposed, which is based on the establishment of basic space vectors and modulation technique in similarity with six-switch three-phase inverters. This approach has a very important sense to solve hard problems for FSTPI under DC-link voltage imbalance, for example ensuring the required voltage for under modulation mode and over modulation mode 1 and 2, extended to six-step mode. The compensated technique also allows reduce the size of DC-link capacitors and the cost of the inverter. Matlab/Simulink is used for the simulation of the proposed SVPWM algorithm under DC-link voltage ripple. This SVPWM approach is also validated experimentally using DSP TMS320LF2407a in FSTPI-IM system. The effectiveness of this adaptive SVPWM method and the output quality of the inverter are verified.
Keywords :
PWM invertors; induction motors; mathematical analysis; DC-link capacitors; DC-link voltage imbalance; DC-link voltage ripple; DSP TMS320LF2407a; Matlab; Simulink; dynamic adaptive space vector PWM algorithm; four switch three phase inverter fed induction motor; mathematical transform; modulation technique; six-switch three-phase inverters; Algorithm design and analysis; Capacitors; Costs; Digital signal processing; Functional analysis; Induction motors; Pulse width modulation inverters; Space vector pulse width modulation; Switches; Voltage; DC-link ripple; Four Switch Three Phase Inverter; Six Switch Three Phase Inverter; Space vector Pulse-Width-Modulation; overmodulation; undermodulation;
Conference_Titel :
Power Electronics and Drive Systems, 2009. PEDS 2009. International Conference on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-4166-2
Electronic_ISBN :
978-1-4244-4167-9
DOI :
10.1109/PEDS.2009.5385815