Model predictive direct power control based on error correction for three‐phase voltage source PWM rectifier. (19th December 2019)

• Record Type: Journal Article
• Authors: Fan, Bo; Fu, Zhumu; Michels, Kai
• Is Part Of: International transactions on electrical energy systems. Volume 30:Number 4(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-12-19
• Subjects: direct power control -- error correction -- model predictive control -- pwm -- rectifier; Electric power -- Periodicals; Electric power systems -- Periodicals; Electrical engineering -- Periodicals; 621.3
• DOI: 10.1002/2050-7038.12263
• Languages: English
• ISSNs: 2050-7038

Abstract

Summary: With the analysis on the drawbacks of the traditional direct power control for three‐phase pulse width modulation (PWM) rectifier, including the unfixed switching frequency, the higher grid‐side current harmonic component, and the longer system setting time, one method of the model predictive direct power control based on error correction for three‐phase voltage source PWM rectifier is proposed in this paper. Based on instantaneous power theory, the PWM rectifier model predictive objective function of is built. Its partial derivative is calculated to predict the variations of active and reactive power in the next sampling period and achieve the tracking control for the given power of the next period. The second‐order Lagrange interpolation method is introduced to correct the predict power to achieve the minimum error of active and reactive power between actual value and the predicted value. Instead of switch table, space vector PWM is adopted to drive the power switch of rectifier. This method simplifies power control inner‐loop structure and is able to achieve the fixed switching frequency. The experimental results show that this method has better dynamic and static performance; the system is not sensitive to the change of inductance parameters; it can reduce the total harmonic distortion of grid current effectively and improve the power factor.