Study on electrical performance of modern VVVF drives for HVAC applications

Wai Lok Chan, S. M. Suen, A. T P So

Research output: Journal article publicationConference articleAcademic researchpeer-review

10 Citations (Scopus)


As the `energy conservation' concept has been widely accepted by most engineers and building professionals, the power electronics variable speed drives have been very popular in the building industry, in particular, in the area of heating, ventilation and air-conditioning (HVAC) applications because this is the area where a substantial energy consumption exists in a modern commercial building. This paper first of all highlights the operating principle of the modern variable voltage variable frequency (VVVF) drives and discusses its impact on the electrical power distribution system in the buildings. A typical off-the-shelf VVVF drive for HVAC application was examined by a comprehensive testing arrangement in the `Electric Drive Laboratory' inside the Department of Building & Construction of City University of Hong Kong. The methods of assessment have been included in this paper together with the technical results. Furthermore, the records of a comprehensive site measurement of the drive are summarized in this paper as well to give the readers a clearer understanding of the real application. The argument of using `Fundamental Power Factor' or `Total Power Factor' to describe the power factor of a VVVF drive has also been highlighted in this paper as a means to raise discussion between various parties concerned.
Original languageEnglish
Pages (from-to)825-830
Number of pages6
JournalIEE Conference Publication
Issue number450
Publication statusPublished - 1 Feb 1998
EventProceedings of the 1997 4th International Conference on Advances in Power System Control, Operation and Management. Part 1 (of 2) - Hong Kong, Hong Kong
Duration: 11 Nov 199714 Nov 1997

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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