All-digital logic control PWM/PFC for inverter system

Author

Han, Gyeong-Hae ; Ko, Bum-suk

Author_Institution

Digital Appl. Res. Lab., LG Electron. Inc., Seoul, South Korea

Volume

2

fYear

2000

fDate

2000

Firstpage

789

Abstract

This paper describes the new PWM (pulse width modulation) and PFC (power factor correction) circuit for a home appliance inverter system, especially inverter type air conditioners, washers and refrigerators by all-digital circuits which are very easy to be embedded within one 8 bit microprocessor. It is more cost effective as well as easier to apply than the previous inverter system operated by analog IC. We could remove more than 30 passive components as well as generate an input sine current waveform easily. It has only a twentieth control power consumption of the previous system. We used various computer aided design tools to develop the logic. The logic was tested by PLD (Programmable Logic Device)

Keywords

PWM invertors; air conditioning; digital control; domestic appliances; logic CAD; logic circuits; power factor correction; power supplies to apparatus; programmable logic devices; CAD tools; PFC circuit; PWM circuit; air conditioners; computer aided design tools; digital logic control; digitally controlled inverter system; home appliance inverter system; input sine current waveform generation; microprocessor; power factor correction circuit; pulse width modulation circuit; refrigerators; washers; Control systems; Home appliances; Logic devices; Logic testing; Power factor correction; Programmable logic devices; Pulse circuits; Pulse inverters; Pulse width modulation inverters; Refrigerators;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2000. ICECS 2000. The 7th IEEE International Conference on

Conference_Location

Jounieh

Print_ISBN

0-7803-6542-9

Type

conf

DOI

10.1109/ICECS.2000.912995

Filename

912995