Level Shifted Carrier Signal Based Scalar Random Pulse Width Modulation Algorithms for Cascaded Multilevel Inverter Fed Induction Motor Drive

Authors: M. Nayeemuddin, T. Bramhananda Reddy, M. Vijaya Kumar

Abstract:

Acoustic noise becoming ever more obnoxious radiated by voltage source inverter fed induction motor drive in modern and industrial applications. The drive utilized for industrial and modern applications should use “spread spectrum” innovation known as Random pulse width modulation (PWM) algorithms where acoustic noise emanates through the machine should be critically concerned. This paper illustrates three types of random PWM control algorithms with fixed switching frequency namely 1) Random modulating PWM 2) Random carrier PWM and 3) Random modulating-carrier PWM. The spectrum plots of the motor stator current demonstrate the strength and robustness of the proposed PWM algorithms. To affirm the proposed algorithms, experimental tests have been conducted using dSPACE rt1104 control board on a v/f control three phase induction motor drive fed by DC link cascaded multilevel inverter.

Keywords: Multilevel inverter, acoustic noise, CSVPWM, total harmonic distortion, random PWM algorithm.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3346698

References:

[1] B. K. Bose, “Power Electronics and Variable Frequency Drives—Technology and Applications”, New York: IEEE Press, 1996.
[2] Boys, J.T., And Walton, S.J., “Scalar control: an alternative AC drive philosophy”, IEE Proc. B, 135, (3), pp. 151-158, 1988.
[3] S. Legowsk, J. Bei, and A. M. Trzynadlowski, “Analysis and implementation of a grey-noise PWM technique based on voltage space vectors”, IEEE, 586–593, 1992.
[4] T. G. Habetler and D. M. Divan, “Acoustic noise reduction in sinusoidal PWM drives using a randomly modulated carrier”, IEEE Trans. Power Electron, 6, 356–363, July 1991.
[5] Nayeemuddin. M, T. Bramhananda Reddy and M.Vijaya Kumar, “Level shifted Discontinuous PWM Algorithms to minimize common mode voltage for cascaded multilevel inverter fed induction motor drive ”, International Journal of Power Electronics and Drive System (IJPEDS), Vol. 9, No. 2, 504-518, June 2018.
[6] David Solomon George., M.R.Baiju, “Space vector based Random Pulse Width Modulation scheme for a 3-level inverter in open-end winding induction motor configuration” IEEE International Symposium on Industrial Electronics ISIE, 742-747 May 2012.
[7] David Solomon George., M.R.Baiju, “Space Vector based Hybrid Random Pulse Width Modulation Technique for a 3-Level Inverter” In: 9th IEEE International Conference on Power Electronics and Drive Systems PEDS, Singapore, December 2011; 1074-1079, 2011.
[8] Kevin Lee, Guangtong Shen, Wenxi Yao; Zhengyu Lu. “Performance Characterization of Random Pulse Width Modulation Algorithms in Industrial and Commercial Adjustable Speed Drives”, IEEE Transactions on Industry Applications, 2003-2010, 2016.
[9] T. Ramanathan, R. Ramesh, C. K. Subramaniam, K. Ganesan. “ Pseudorandom carrier based subharmonic PWM for cascaded multilevel inverters”, IEEE International Symposium on Circuits and Systems (ISCAS), 117 – 120, 2014.
[10] Edison Roberto C.DA Silva, Euzeli Cipriano Dos Santos, Hr and Cursino Brandao Jacobina “Pulse width Modulation Strategies: Non sinusoidal Carrier Based PWM and space vector Modulation Techniques”, IEEE Industrial Electronics Magazine, June 2011, pp. 37-45.