A simplified control strategy for single-phase UPS inverters

• Autorzy: Monfared M.

Identyfikatory

DOI

10.2478/bpasts-2014-0037

• Języki publikacji: EN

Abstrakty

EN

Though there are many strategies to control single-phase uninterruptible power supply (UPS) inverters, they suffer from some drawbacks, the main being complexity. This paper proposes a simple dual-loop controller for the single-phase UPS inverter with the LC filter. The suggested control scheme uses the capacitor current as the feedback signal in the inner current loop. No fictitious phase generation or reference frame transformations are required, and simple proportional gains are employed as both voltage and current regulators. A feedforward of the derivative of the output voltage is also proposed, which significantly improves the performance of the closed loop control system. Then, based on the model of the inverter with the proposed control strategy, a simple and systematic design procedure is presented. Finally, the theoretical achievements are supported by extensive simulations.

Słowa kluczowe

EN

single-phase UPS; multi-loop feedback; feedforward

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2014
• Tom: Vol. 62, nr 2
• Strony: 367--373
• Opis fizyczny: Bibliogr. 25 poz., tab., wykr., rys.

Twórcy

autor

Monfared M.

• Department of Electrical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad 91779-48974, Iran

Bibliografia

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