Optimal variable switching frequency scheme for reducing switching loss in single-phase inverters based on time-domain ripple analysis

Xiaolin Mao, Raja Ayyanar, Harish K. Krishnamurthy

Research output: Contribution to journalArticle

109 Citations (Scopus)

Abstract

The choice of switching frequency for pulsewidth modulation single-phase inverters, such as those used in grid-connected photovoltaic application, is usually a tradeoff between reducing the total harmonic distortion (THD) and reducing the switching loss. This paper discusses an approach to minimize the switching loss while meeting a given THD requirement using variable switching frequency schemes (switching schemes with the switching frequency varying within a fundamental period). An optimal switching scheme is proposed based on time-domain current ripple analysis and the calculus of variations. The analysis shows that, to meet the same THD requirement, the optimal scheme has a significant saving on switching loss, compared to the fixed switching frequency scheme and the hysteresis control scheme, in addition to other benefits such as reduced peak switching loss and a spread spectrum of the current harmonics. The optimal scheme has been implemented in a prototype and the experimental results have verified the theoretical analysis. Also, a straightforward design method for designing filter inductors for single-phase converters is provided based on the time-domain current ripple analysis.

Original languageEnglish (US)
Pages (from-to)991-1001
Number of pages11
JournalIEEE Transactions on Power Electronics
Volume24
Issue number4
DOIs
StatePublished - 2009

Fingerprint

Time domain analysis
Switching frequency
Harmonic distortion
Hysteresis
Modulation

Keywords

  • Calculus of variations
  • Photovoltaic (PV)
  • Pulsewidth modulation (PWM)
  • Single-phase converter
  • Switching loss
  • Variable switching frequency

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Optimal variable switching frequency scheme for reducing switching loss in single-phase inverters based on time-domain ripple analysis. / Mao, Xiaolin; Ayyanar, Raja; Krishnamurthy, Harish K.

In: IEEE Transactions on Power Electronics, Vol. 24, No. 4, 2009, p. 991-1001.

Research output: Contribution to journalArticle

@article{8888ccdbfd8c4004a8eb8765d1f1928d,
title = "Optimal variable switching frequency scheme for reducing switching loss in single-phase inverters based on time-domain ripple analysis",
abstract = "The choice of switching frequency for pulsewidth modulation single-phase inverters, such as those used in grid-connected photovoltaic application, is usually a tradeoff between reducing the total harmonic distortion (THD) and reducing the switching loss. This paper discusses an approach to minimize the switching loss while meeting a given THD requirement using variable switching frequency schemes (switching schemes with the switching frequency varying within a fundamental period). An optimal switching scheme is proposed based on time-domain current ripple analysis and the calculus of variations. The analysis shows that, to meet the same THD requirement, the optimal scheme has a significant saving on switching loss, compared to the fixed switching frequency scheme and the hysteresis control scheme, in addition to other benefits such as reduced peak switching loss and a spread spectrum of the current harmonics. The optimal scheme has been implemented in a prototype and the experimental results have verified the theoretical analysis. Also, a straightforward design method for designing filter inductors for single-phase converters is provided based on the time-domain current ripple analysis.",
keywords = "Calculus of variations, Photovoltaic (PV), Pulsewidth modulation (PWM), Single-phase converter, Switching loss, Variable switching frequency",
author = "Xiaolin Mao and Raja Ayyanar and Krishnamurthy, {Harish K.}",
year = "2009",
doi = "10.1109/TPEL.2008.2009635",
language = "English (US)",
volume = "24",
pages = "991--1001",
journal = "IEEE Transactions on Power Electronics",
issn = "0885-8993",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "4",

}

TY - JOUR

T1 - Optimal variable switching frequency scheme for reducing switching loss in single-phase inverters based on time-domain ripple analysis

AU - Mao, Xiaolin

AU - Ayyanar, Raja

AU - Krishnamurthy, Harish K.

PY - 2009

Y1 - 2009

N2 - The choice of switching frequency for pulsewidth modulation single-phase inverters, such as those used in grid-connected photovoltaic application, is usually a tradeoff between reducing the total harmonic distortion (THD) and reducing the switching loss. This paper discusses an approach to minimize the switching loss while meeting a given THD requirement using variable switching frequency schemes (switching schemes with the switching frequency varying within a fundamental period). An optimal switching scheme is proposed based on time-domain current ripple analysis and the calculus of variations. The analysis shows that, to meet the same THD requirement, the optimal scheme has a significant saving on switching loss, compared to the fixed switching frequency scheme and the hysteresis control scheme, in addition to other benefits such as reduced peak switching loss and a spread spectrum of the current harmonics. The optimal scheme has been implemented in a prototype and the experimental results have verified the theoretical analysis. Also, a straightforward design method for designing filter inductors for single-phase converters is provided based on the time-domain current ripple analysis.

AB - The choice of switching frequency for pulsewidth modulation single-phase inverters, such as those used in grid-connected photovoltaic application, is usually a tradeoff between reducing the total harmonic distortion (THD) and reducing the switching loss. This paper discusses an approach to minimize the switching loss while meeting a given THD requirement using variable switching frequency schemes (switching schemes with the switching frequency varying within a fundamental period). An optimal switching scheme is proposed based on time-domain current ripple analysis and the calculus of variations. The analysis shows that, to meet the same THD requirement, the optimal scheme has a significant saving on switching loss, compared to the fixed switching frequency scheme and the hysteresis control scheme, in addition to other benefits such as reduced peak switching loss and a spread spectrum of the current harmonics. The optimal scheme has been implemented in a prototype and the experimental results have verified the theoretical analysis. Also, a straightforward design method for designing filter inductors for single-phase converters is provided based on the time-domain current ripple analysis.

KW - Calculus of variations

KW - Photovoltaic (PV)

KW - Pulsewidth modulation (PWM)

KW - Single-phase converter

KW - Switching loss

KW - Variable switching frequency

UR - http://www.scopus.com/inward/record.url?scp=67349177767&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67349177767&partnerID=8YFLogxK

U2 - 10.1109/TPEL.2008.2009635

DO - 10.1109/TPEL.2008.2009635

M3 - Article

AN - SCOPUS:67349177767

VL - 24

SP - 991

EP - 1001

JO - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

SN - 0885-8993

IS - 4

ER -