Harmonic effect on BLDC motor temperature caused by driving system

Author

Nilsakorn, Taywin ; Woranetsuttikul, Kaweepoj ; Pinsuntia, Kittapas

Author_Institution

Dept. of Electr. Eng., King Mongkut´s Inst. of Technol. Ladkrabang, Ladkrabang, Thailand

fYear

2014

fDate

19-21 March 2014

Firstpage

1

Lastpage

4

Abstract

This paper presents the analysis of harmonic effect caused by driving system of the brushless DC (BLDC) motor. The constant ratio of voltage per frequency can result various voltage and current harmonics depended on the modulation index or duty cycle. The losses of the BLDC motor result the rising temperature. The LC filter was designed to meet the BLDC motor on total harmonic distortion reduction. The BLDC motor operates with 40 kHz switching frequency, the experimental of 10 kW BLDC motor was investigated to find out how harmonic and THD can affect the motor loss. Three liter of water was circled as water cooling on the motor. The experimental showed that the operation at higher voltage introduces lower THD, also lower loss, where the LC filter results lower motor temperature compared to without LC filter.

Keywords

DC motor drives; brushless DC motors; harmonic distortion; power harmonic filters; BLDC motor temperature; LC filter; brushless DC motor; current harmonics; driving system; duty cycle; frequency 40 kHz; harmonic effect; modulation index; motor loss; power 10 kW; switching frequency; total harmonic distortion reduction; voltage harmonics; water cooling; Cooling; Heating; Indexes; BLDC Motor; LC Filter; Motor Drive; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering Congress (iEECON), 2014 International

Conference_Location

Chonburi

Type

conf

DOI

10.1109/iEECON.2014.6925852

Filename

6925852