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

Han Huang, Shiyan Hu, Dariusz Czarkowski

Research output: Contribution to journalArticle

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.

Original languageEnglish (US)
Pages (from-to)204-218
Number of pages15
JournalInternational Journal of Energy Technology and Policy
Volume5
Issue number2
DOIs
StatePublished - 2007

Fingerprint

Distributed power generation
Power quality
Pulse width modulation
Active filters
Digital signal processors
Real time systems
Values
filter
performance

Keywords

  • Distributed generation
  • Programmed pulse-width modulation
  • Simplex homotopic fixed-point algorithm

ASJC Scopus subject areas

  • Fuel Technology
  • Geography, Planning and Development

Cite this

Programmed PWM to improve power quality in systems with distributed generation units. / Huang, Han; Hu, Shiyan; Czarkowski, Dariusz.

In: International Journal of Energy Technology and Policy, Vol. 5, No. 2, 2007, p. 204-218.

Research output: Contribution to journalArticle

@article{67738e600afb4e3691eb4c6a54aff352,
title = "Programmed PWM to improve power quality in systems with distributed generation units",
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",
author = "Han Huang and Shiyan Hu and Dariusz Czarkowski",
year = "2007",
doi = "10.1504/IJETP.2007.013032",
language = "English (US)",
volume = "5",
pages = "204--218",
journal = "International Journal of Energy Technology and Policy",
issn = "1472-8923",
publisher = "Inderscience Enterprises Ltd",
number = "2",

}

TY - JOUR

T1 - Programmed PWM to improve power quality in systems with distributed generation units

AU - Huang, Han

AU - Hu, Shiyan

AU - Czarkowski, Dariusz

PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

KW - Distributed generation

KW - Programmed pulse-width modulation

KW - Simplex homotopic fixed-point algorithm

UR - http://www.scopus.com/inward/record.url?scp=34248371287&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34248371287&partnerID=8YFLogxK

U2 - 10.1504/IJETP.2007.013032

DO - 10.1504/IJETP.2007.013032

M3 - Article

VL - 5

SP - 204

EP - 218

JO - International Journal of Energy Technology and Policy

JF - International Journal of Energy Technology and Policy

SN - 1472-8923

IS - 2

ER -