Journal of Industrial Technology (산업기술연구)
- Volume 20 Issue B
- /
- Pages.147-154
- /
- 2000
- /
- 1229-9588(pISSN)
- /
- 1598-1371(eISSN)
An Overmodulation Strategy for SVPWM Inverter
SVPWM인버터의 과변조 기법
Abstract
This paper proposes an overmodulation strategy for space-vector PWM(SVPWM). The overmodulation strategy increases a fundamental output voltage and improves a voltage utilization up to the maximum in the overmodulation region. To maintain a linearity of the relation between a reference voltage and a fundamental output voltage, this paper suggests a compensation voltage, whose magnitude or phase is modified to the proposed control scheme. The practical implementation is simple and it is applied to improve an output voltage of SVPWM controlled AC Motor in the steady-state. The characteristic of the proposed strategy is confirmed by simulations and experiments for a V/F control of a induction motor.