Technique of Digital SPWM Inverter Based on PRE Control

Abstract:

A PRE control scheme in single-phase inverter is adopted, namely connecting the proportional component with repetitive controller in parallel. This control scheme not only retains the characteristics of fast dynamic response from proportion link ,but also absorbs the advantages of no steady-state error in repetitive control .When the system is in stable operation condition, repetitive controller is used to resist periodic disturbance and thus improve the steady-state performance. Contrarily, the proportional component can feel mutation of input error and produce accommodation immediately to ensure the systems fast speed of response .The comprehensive theoretical analysis of this control strategy is given, and the system is designed in Matlab based on this theory, besides, the control scheme is achieved in the DSP platform by using digital control algorithm. Simulation and experimental results prove that the proposed scheme can achieve good dynamic and steady-state performance.

• Periodical: Advanced Materials Research (Volumes 860-863)
• Pages: 2351-2355
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.860-863.2351
• Online since: December 2013
• Authors: Jie Zhang*, Hong Wei Ma
• Keywords: Digital Control, Dynamic Performance, Inverter, PRE Control, Repetitive Control

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