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http://dx.doi.org/10.7467/KSAE.2014.22.6.023

Dead Time Compensation and Polarity Check of Phase Currents Based on Programmable Low-pass Filter for Automotive Electric Drive Systems  

Choi, Chinchul (Department of Control and Instrumenation Engineering, Graduate School of Changwon National University)
Lee, Kangseok (Department of Control and Instrumenation Engineering, Graduate School of Changwon National University)
Lee, Wootaik (Department of Control and Instrumenation Engineering, Changwon National University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.22, no.6, 2014 , pp. 23-30 More about this Journal
Abstract
This paper proposes a dead time compensation method for an AC motor drive using phase current polarity information which is detected based on a digital programmable low-pass filter (PLPF). The polarity detection using the PLPF is an alternative solution of a conventional method which uses a general low-pass filter (LPF) and hysteresis bands in order to avoid jittering due to noises. The PLPF not only adjusts its cutoff frequency according to the synchronous frequency of AC motors but also eliminates a gain attenuation and phase delay which are main problems of the general LPF. Through the PLPF, a fundamental component signal without gain and phase distortions is extracted from the measured raw current signal with noise. By use of the fundamental component, the polarity of current is effectively detected by reducing the hysteresis band. Finally, the proposed method compensates the dead time effects by adding or subtracting average voltage value to voltage references of the controller according to the detected current polarity information. The proposed compensation method is experimentally verified by compared with the conventional method.
Keywords
Dead time compensation; Programmable low pass filter(PLPF); Inverter; Permanent magnet synchronous motor(PMSM);
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Times Cited By KSCI : 6  (Citation Analysis)
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1 J. Y. Yoo, J. H. Lee and H. T. Moon, "Current Sensorless Drive Method for Electric Power Steeing," Int. J. Automotive Technology, Vol.13, No.7, pp.1141-1147, 2012.   DOI   ScienceOn
2 M. H. Lee, S. K. Ha, J. I. Bae, J. H. Park, H. G. Park, H. J. Choi and H. H. Chun, " Development of a Hardware in the Loop Simulation System for Electric Power Steering in Vehicles," Int. J. Automotive Technology, Vol.12, No.5, pp.733-744, 2011.   DOI
3 S. Hwang and J. Kim, "Dead Time Compensation Method for Voltage-Fed PWM Inverter," Energy Conversion, IEEE Transactions on, Vol.25, No.1, pp.1-10, 2009.
4 J. Song, K. Boo and J. Lee, "Evaluation of Performance and Development of Control Method of New Electric Power Steering System (EPS-TT)," Transactions of KSAE, Vol.12, No.5, pp.145-161, 2004.   과학기술학회마을
5 J. Kim and J. B. Song, "Control Logic Using Torque Map for a Column-type Electric Power Steering System," Transactions of KSAE, Vol.8, No.4, pp.186-193, 2000.   과학기술학회마을
6 X. Zhao, X. Shi, J. Chen and X. Li, "Dynamic Correction of the Steering-characteristic Curve and Application to an EPS Control System," Int. J. Automotive Technology, Vol.12, No.2, pp.243-249, 2011.   과학기술학회마을   DOI   ScienceOn
7 C. C. Choi, K. T. Bae and W. T. Lee, "Development of Average Inverter Model for Analysis of Automotive Electric Drive System," Transactions of KSAE, Vol.18, No.6, pp.23-30, 2010.   과학기술학회마을
8 Y. Murai, T. Watanabe and H. Iwasaki, "Waveform Distortion and Correction Circuit for PWM Inverters with Switching Lag-times," Industry Applications, IEEE Transactions on, Vol.IA-23, Issue 5, pp.881-886, 1987.   DOI
9 J. S. Gi and M. H. Park, "The Analysis and Compensation of Dead-time Effects in PWM Inverters," Industrial Electronics, IEEE Transactions on, Vol.38, No.2, pp.108-114, 1991.   DOI   ScienceOn
10 D. Leggate and R. J. Kerkman, "Pulse-based Dead-time Compensator for PWM Voltage Inverters," Industrial Electronics, IEEE Transactions on, Vol. 44, No.2, pp.191-197, 1997.   DOI   ScienceOn
11 M. Brejl, M. Princ and V. Phillipov, Using the Analog Sensing for AC Motors (ASAC) eTPU Function, 2012.
12 S. Kim, T. Park, J. Yoo, G. Park and N. Kim, "Dead Time Compensation Strategy in a Vector-controlled Induction Machine," KIEE, Vol.47, No.6, pp.788-793, 1998.
13 D. Wilson, Making Low-distortion Motor Waveforms with the MC68HC708MP16, Freescale Semiconductor, Inc., 1997.
14 Freescale, DSP56800 Family Manual, 2005.