Description

This paper is based on findings resulting from ASHRAE Research Project RP-1395.

The objectives of this paper are to provide information on heat loss for solid state VFDs at both full and part-loads and to show how these losses could be predicted. In developing these predictions, use is made of manufacturer and independently measured data. Two analytical part-load VFD power loss models are presented, a linear model in which the VFD power losses vary linearly with the load and a quadratic model in which the VFD power losses vary as the square of the load. The performance of these two analytical models is compared with measured part-load VFD power loss data. An example of VFD power loss at part-load is presented and compared with the results of the two models. The performance of the VFD power loss quadratic model is shown to be superior to the linear model.

Citation: ASHRAE Transactions, 2010, vol. 116, pt. 2, Albuquerque, NM

Product Details

Published:

2010

Number of Pages:

10

File Size:

1 file , 2.7 MB

Product Code(s):

D-AB-10-024