### Abstract

A new optimal programmed PWM technique is described. The voltage total harmonic distortion at the output of an L-C filter connected to a PWM inverter is minimized. The proposed technique can be directly applied to constant frequency, constant amplitude sinusoidal power supplies such as uninterruptible power supplies. Without any hardware changes, the new method allows for more than 20 percent smaller THD than the general programmed PWM method. Other indexes that are functions of surplus harmonics, such as acoustic noise, heat losses, torque and speed ripples, can be optimized using the new method. A new model of nonconstraint optimization is developed for the proposed method. It is shown that this model includes both double-level and triple-level PWM waveforms. An energy conservation principle is applied to the model to prove and explain the optimization possibility. An energy conservation based algorithm for obtaining an optimization starting point is demonstrated. A numerical example of triple-level optimal programmed PWM waveforms for single-phase applications is presented.

Original language | English (US) |
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Title of host publication | IECON Proceedings (Industrial Electronics Conference) |

Editors | Anon |

Publisher | IEEE Comp Soc |

Pages | 786-791 |

Number of pages | 6 |

Volume | 2 |

State | Published - 1998 |

Event | Proceedings of the 1998 24th Annual Conference of the IEEE Industrial Electronics Society, IECON. Part 4 (of 4) - Aachen, Ger Duration: Aug 31 1998 → Sep 4 1998 |

### Other

Other | Proceedings of the 1998 24th Annual Conference of the IEEE Industrial Electronics Society, IECON. Part 4 (of 4) |
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City | Aachen, Ger |

Period | 8/31/98 → 9/4/98 |

### Fingerprint

### ASJC Scopus subject areas

- Electrical and Electronic Engineering

### Cite this

*IECON Proceedings (Industrial Electronics Conference)*(Vol. 2, pp. 786-791). IEEE Comp Soc.

**Optimal surplus harmonic energy distribution.** / Li, Li; Czarkowski, Dariusz; Dzieza, Jerzy.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*IECON Proceedings (Industrial Electronics Conference).*vol. 2, IEEE Comp Soc, pp. 786-791, Proceedings of the 1998 24th Annual Conference of the IEEE Industrial Electronics Society, IECON. Part 4 (of 4), Aachen, Ger, 8/31/98.

}

TY - GEN

T1 - Optimal surplus harmonic energy distribution

AU - Li, Li

AU - Czarkowski, Dariusz

AU - Dzieza, Jerzy

PY - 1998

Y1 - 1998

N2 - A new optimal programmed PWM technique is described. The voltage total harmonic distortion at the output of an L-C filter connected to a PWM inverter is minimized. The proposed technique can be directly applied to constant frequency, constant amplitude sinusoidal power supplies such as uninterruptible power supplies. Without any hardware changes, the new method allows for more than 20 percent smaller THD than the general programmed PWM method. Other indexes that are functions of surplus harmonics, such as acoustic noise, heat losses, torque and speed ripples, can be optimized using the new method. A new model of nonconstraint optimization is developed for the proposed method. It is shown that this model includes both double-level and triple-level PWM waveforms. An energy conservation principle is applied to the model to prove and explain the optimization possibility. An energy conservation based algorithm for obtaining an optimization starting point is demonstrated. A numerical example of triple-level optimal programmed PWM waveforms for single-phase applications is presented.

AB - A new optimal programmed PWM technique is described. The voltage total harmonic distortion at the output of an L-C filter connected to a PWM inverter is minimized. The proposed technique can be directly applied to constant frequency, constant amplitude sinusoidal power supplies such as uninterruptible power supplies. Without any hardware changes, the new method allows for more than 20 percent smaller THD than the general programmed PWM method. Other indexes that are functions of surplus harmonics, such as acoustic noise, heat losses, torque and speed ripples, can be optimized using the new method. A new model of nonconstraint optimization is developed for the proposed method. It is shown that this model includes both double-level and triple-level PWM waveforms. An energy conservation principle is applied to the model to prove and explain the optimization possibility. An energy conservation based algorithm for obtaining an optimization starting point is demonstrated. A numerical example of triple-level optimal programmed PWM waveforms for single-phase applications is presented.

UR - http://www.scopus.com/inward/record.url?scp=0032320445&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032320445&partnerID=8YFLogxK

M3 - Conference contribution

VL - 2

SP - 786

EP - 791

BT - IECON Proceedings (Industrial Electronics Conference)

A2 - Anon, null

PB - IEEE Comp Soc

ER -