Hybrid Pulse Width Modulation Strategy for Wide Speed Range in IPMSM with Low Cost Drives

Autor: Sung-Chul Go, Hanwoong Ahn, Ju Lee
Rok vydání: 2016
Předmět:
Zdroj: Journal of Electrical Engineering and Technology. 11:670-674
ISSN: 1975-0102
DOI: 10.5370/jeet.2016.11.3.670
Popis: The control performance of hybrid PWM inverter using a phase current measurement is presented in this paper. The hybrid PWM technique consists of space vector pulse width modulation (SVPWM) and six-step voltage control operation. The SVPWM is performed to reduce the harmonic components in the low speed region, and the six-step modulation is applied to increase the maximum speed of the IPMSM in the high speed region. Therefore, it is possible to obtain a great performance in both the low speed range and high speed range. However, the six-step modulation cannot be completely implemented, since the inverter that includes the lag-shunt sensing method has an immeasurable current region. In this paper, a quasi-six-step modulation using a modified voltage vector is proposed. The validity and usefulness of the proposed PWM technique is verified by MATLAB/Simulink and experimental results.
Databáze: OpenAIRE