Title

An Adaptive Slope Compensation for the Single-Stage Inverter With Peak Current-Mode Control

Authors

Authors

F. Tian; S. Kasemsan;I. Batarseh

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

IEEE Trans. Power Electron.

Keywords

dc-ac power conversion; inverters; photovoltaic power systems; Engineering, Electrical & Electronic

Abstract

This letter develops a mathematical model of the slope compensation for a single-stage inverter with peak current-mode control. The model proves that the single-stage inverter with peak current-mode control will be unconditionally stable only if a slope compensation equal or greater than half the slope rate of the inductor current downslope is applied. Thus, the slope compensation requirements for a conventional dc-dc converter and a single-stage inverter with peak current-mode control are the same. A simulation model has been developed to prove this mathematical model is valid. A frequency-domain analysis of the single-stage inverter shows that the unified slope compensation will degrade the loop gain at lower input voltages. An adaptive slope compensation is proposed to keep the loop gain of the single-stage inverter nearly constant at all the duty cycles. A practical design is also proposed.

Journal Title

Ieee Transactions on Power Electronics

Volume

26

Issue/Number

10

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

2857

Last Page

2862

WOS Identifier

WOS:000296982100014

ISSN

0885-8993

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