LOW COST AND PRECISE ELECTRONIC TACHOGENERATOR FOR SPEED CONTROL APPLICATIONS OF BLDC MOTOR DRIVE WITH 150-DEGREE CONDUCTION MODE INVERTER

Abstract

This experimental study presents a precise speed control scheme for Brushless Direct Current (BLDC) Motor which is fed three-phase inverter implemented 150-degree commutation mode.  In 150-degree commutation mode, four rotor position signals are required. From these four position signals can be attained pure analogue rotor speed information. Because there are four position signals, it can be easily obtained analogue rotor speed signal by implementing frequency to voltage converter. So, low cost and further precise electronic tachogenerator (ETg) can be put into practice in order to perform closed-loop precision speed control for BLDC motors.

 

In this study, 150-degree commutation technique has been applied a BLDC motor and four rotor position signals have combined properly to attain higher frequency than one position sensor’s frequency to acquire pure analogue rotor speed information. After converting four positions signals to pure analogue rotor speed information signal by frequency to voltage converter circuitry for manufactured this study, it has been applied to a PI speed regulator in order to obtain constant rotor speed versus changing load.

BLDC motor driven 150-degree commutation has been run under various loads and speeds and performance of the BLDC motor and ETg have been examined.

Furthermore, a high resolution electro mechanic tachogenerator is used in experimental setup in order to compare the performances with proposed ETg. 

Keywords

• 150-degree commutation mode,electronic tachogenerator,frequency to voltage converter,speed control of BLDC motor

References

1. Ozgenel M. Cihat, Bal Gungor, Uygun Durmus, (2017). Design an application of a novel high precision and low cost electronic tachogenerator for sensor-based direct current motor drivers, Rewiew of Scientific Instruments, Vol. 88, issue, 3,1-7. MadhusudhanaRao at al, (2010). Speed control of BLDC Motor Using DSP, International Journal of Engineering Science and Technology, Vol. 2(3), 143-147. Hung-Chi Chen, Chih-Kai Huang, Tzu-Yang Tsai, (2009). DCM Sensorless Control for Twelve-Step Square-Wave PWM, 2009 International Conference on Power Electronics and Drive Systems (PEDS), 2-5 Nov., Taipei, 511-516. Srivichai Promthong and Mongkol Konghirun, (2013). Sensorless control of BLDC motor drive with 1500 conducting mode to minimize torque ripple, International Conference on Electrical Machine and Systems, Oct, 26-29, Busan, Korea. Maynur H. Maheswari, Madhusudan V. Gohil, Mayuri Tahilramani, (2015). Implementation of Three Phase 12-Step VSI With Harmonics Reduction, National Conference on Recent Research in Engineering and Technology (NCRRET -2015), International Journal of Advance Engineering and Research Development (IJAERD) e-ISSN: 2348-4470, print-ISSN:2348-6406 Mohamed H. Saied, M. Z. Mostafa, T. M. Abdel-Moneim and H.A. Yousef, (2006). On Three-Phase Six-Switches Voltage Source Inverter: A 150o Conduction Mode, IEEE ISIE 2006, July 9-12, Montréal, Québec, Canada. Arpit Shah, Divyesh Mangroliya, and Nirav Vaghela, (2013). Simulation and Analysis of an Advanced 150o Conduction Mode for Three Phase Voltage Source Inverter, ACEEE, Proc. Of. Int. Conf. on Emerging Trends in Engineering and Technology. Rishabh Shah, Dhairya Shah, Priyank Shah, Sanket Thakur, (2016). Simulation and Analysis of 150° Conduction Mode For Three Phase Voltage Source Inverter, International Journal of Engineering Research and Development (IJERD) ISSN: 2278-067X Recent trends in Electrical and Electronics & Communication Engineering, RTEECE 08th – 09th April , 05-10. KA331 V-F Converter, (2001). Fairchild Semiconductor Corporation.