Analysis and Compensation Control of Dead-Time Effect on Space Vector PWM

Jie Shi; Shihua Li

Analysis and Compensation Control of Dead-Time Effect on Space Vector PWM

Jie Shi

Shihua Li

Vol. 15, No. 2, pp. 431-442, Mar. 2015

10.6113/JPE.2015.15.2.431

Current tracking

Dead-time compensation

Extended-state observer

PMSM

SVPWM

PDF

Abstract

Dead-time element must be set into space vector pulsed width modulation signals to avoid short circuits of the inverter. However, the dead-time element distorts the output voltage vector, which deteriorates the performance of electrical machine drive system. In this paper, dead-time effect and its compensation control strategy are analyzed. Based on the analysis, the voltage distortion caused by dead-time is regarded as two disturbances imposed on dq axes in the rotor reference frame, which degenerates the current tracking performance. To inhibit the adverse effect caused by the dead-time, a control scheme using two linear extended state observers is proposed. This method provides a strong ability to suppress dead-time effects. Simulations and experiments are conducted on a permanent magnet synchronous motor drive system to demonstrate the effectiveness of the proposed method.

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Cite this article

[IEEE Style]

J. Shi and S. Li, "Analysis and Compensation Control of Dead-Time Effect on Space Vector PWM," Journal of Power Electronics, vol. 15, no. 2, pp. 431-442, 2015. DOI: 10.6113/JPE.2015.15.2.431.

[ACM Style]

Jie Shi and Shihua Li. 2015. Analysis and Compensation Control of Dead-Time Effect on Space Vector PWM. Journal of Power Electronics, 15, 2, (2015), 431-442. DOI: 10.6113/JPE.2015.15.2.431.