DSP-based fully digital control of a PWM DC-AC converter for AC voltage regulation

Ying-Yu Tzou*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

42 Scopus citations


This paper describes the design and implementation of a DSP-based fully digital-controlled single-phase pulsewidth modulated (PWM) DC-AC power converter for AC voltage regulation. The proposed multiloop digital controller consists of a current controller, a voltage controller, and a feedforward controller. This multiloop digital controller was realized using a single-chip digital signal processor (DSP). The PWM gating signals are determined at every sampling instant by the proposed multiloop digital control scheme using a set of detected feedback signals. A software current control scheme has been developed to achieve fast current control of the PWM inverter and decouple the inductor of the output filter. Frequency response behavior of this digital-controlled PWM DC-AC power converter under load variations has been analyzed. The design procedure of the digital controller has been described in detail. Experimental results have been given to verify the proposed digital control scheme. The constructed BSP-based PWM DC-AC power converter system can achieve fast dynamic response and with low total harmonic distortion (THD) for rectifier type of loads.

Original languageEnglish
Title of host publicationProceedings of PESC 1995 - Power Electronics Specialist Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages7
ISBN (Electronic)0780327306
StatePublished - 1 Jan 1995
Event26th Annual IEEE Power Electronics Specialists Conference, PESC 1995 - Atlanta, United States
Duration: 18 Jun 199522 Jun 1995

Publication series

NamePESC Record - IEEE Annual Power Electronics Specialists Conference
ISSN (Print)0275-9306


Conference26th Annual IEEE Power Electronics Specialists Conference, PESC 1995
CountryUnited States

Fingerprint Dive into the research topics of 'DSP-based fully digital control of a PWM DC-AC converter for AC voltage regulation'. Together they form a unique fingerprint.

Cite this