Original scientific paper

https://doi.org/10.7305/automatika.2014.12.545

Direct Active Power Control for Regenerative Cascade Inverter with Reduced AC Power in DC Link

Changqing Qiu ; College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Luoyu Load, 1037#, 430074, Wuhan, Hubei, P.R. China
Shenghua Huang ; College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Luoyu Load, 1037#, 430074, Wuhan, Hubei, P.R. China
Ende Wang ; College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Luoyu Load, 1037#, 430074, Wuhan, Hubei, P.R. China

Abstract

This paper presents a regenerative cascade inverter topology with direct active power control scheme. From the mathematical model of the proposed regenerative cascade inverter, the instantaneous active power and reactive power are derived. Based on the instantaneous 'abc' theory, direct active power feed-forward control is proposed to reduce AC power and voltage fluctuation in DC link. Moreover, a load current full order observer is established to avoid the inconvenient of the current sensor installation. The proposed control scheme is analyzed theoretically by simulation, and verified experimentally.

Keywords

Regenerative cascade inverter; Direct active power control; Feed-forward control; Observer

Hrčak ID:

133193

URI

https://hrcak.srce.hr/133193

Publication date:

12.1.2015.

Article data in other languages: croatian

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