A Low-power Sensorless Inverter Controller of Brushless DC Motors

Author

Wang, Chua-Chin ; Sung, Gang-Neng ; Fang, Kuan-Wen ; Tseng, Sheng-Lun

Author_Institution

Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung

fYear

2007

fDate

27-30 May 2007

Firstpage

2435

Lastpage

2438

Abstract

A low-power sensorless inverter controller is designed for brushless DC (BLDC) motors without using any Hall sensor. A back-EMF (back-electromotive force) estimation method is adopted to detect the commutation moment for rotation control of the brushless DC motors. The position of the rotor can be precisely estimated by measuring the back-EMF as well as the zero-crossing points. The proposed controller is low power and low cost because of not using expensive power consuming Hall sensors. The proposed sensorless inverter controller is integrated in a standard mixed-signal single-poly, and six metal 0.18-mum CMOS process.

Keywords

CMOS integrated circuits; DC motors; angular velocity control; invertors; machine control; microcontrollers; mixed analogue-digital integrated circuits; 0.18 micron; BLDC motors; back-EMF estimation; back-electromotive force estimation; brushless DC motors; commutation moment detection; low-power sensorless inverter controller; mixed-signal single-poly six metal CMOS process; rotation control; zero-crossing points; Brushless DC motors; Brushless motors; Commutation; DC motors; Force control; Force sensors; Inverters; Position measurement; Rotors; Sensorless control; BLDC; brushless; inverter; low-power; motor; sensorless;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on

Conference_Location

New Orleans, LA

Print_ISBN

1-4244-0920-9

Electronic_ISBN

1-4244-0921-7

Type

conf

DOI

10.1109/ISCAS.2007.378612

Filename

4253168