The proposed motor drive system for HEC is configured,
and the driving characteristics are verified in this paper. In the
driving performance test, the rated driving characteristics and
maximum output characteristics are ensured. The rated driving
efficiency is over 92 %, so it will be a high efficient
compressor drive.
In this paper a novel curve fitting method for getting
maximum torque per unit current is made by the multiply
function suitable for the microprocessor and designed IPM is
suitable for electric compressor of the automobile. Also the
position information of the rotator is gotten by the proposed
virtual encoder. The simulation and test have been done to
clarify the reasonableness of the proposed method