Programmed PWM to improve power quality in systems with distributed generation units

Han Huang, Shiyan Hu and Dariusz Czarkowski

International Journal of Energy Technology and Policy, 2007, vol. 5, issue 2, 204-218

Abstract: Pulse-Width Modulated (PWM) inverters are widely applied in Distributed Generation (DG) units and power quality equipment owing to their excellent performance and flexible control means. Programmed PWM (PPWM), as a special type of optimal PWM strategy, theoretically allows for setting the fundamental and the selected harmonic amplitudes directly to arbitrary values. The algorithms for solving PPWM problems that could be found in literature, so far, suffer from dependence on good guesses of initial values. This makes them highly impractical for real-time systems. In this paper, a novel Simplex Homotopic Fixed-Point Algorithm (SHFPA) is applied to inverters which interface DG units with the power grid. The numerical transformation and the associated geometrical algorithm render SHFPA fast, accurate and flexible. With typical contemporary digital signal processors, SHFPA can be used to set amplitudes of several tens of harmonics within one cycle of the AC power waveform. Hence, a single SHFPA-controlled DG unit can simultaneously play the roles of a generator and an active filter.

Keywords: distributed generation; programmed pulse-width modulation; simplex homotopic fixed-point algorithm; power quality; PWM inverters; PPWM; power generation. (search for similar items in EconPapers)
Date: 2007
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.inderscience.com/link.php?id=13032 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:ids:ijetpo:v:5:y:2007:i:2:p:204-218

Access Statistics for this article

More articles in International Journal of Energy Technology and Policy from Inderscience Enterprises Ltd
Bibliographic data for series maintained by Sarah Parker ().