USING THE MODIFIED REFERENCE SIGNAL TO EXTEND THE RANGE OF LINEAR MODULATION IN ELECTRIC DRIVE

Authors

  • Hoàng Trọng Đức Khoa Vật lý, Trường Đại học Sư phạm, Đại học Huế
  • Nguyễn Thị Thủy Khoa Vật lý, Trường Đại học Sư phạm, Đại học Huế

Abstract

This paper presents the results of research and application of modified pulse width modulation method to extend the range of linear control in electric drive. By using modified reference signals, the linear control range of modulation index m is extended from 0.785 to 0.907, or able to control the motor at over rated speed range with amplitude modulation index ma up to 1.125. The motor is controlled by indirect field-oriented control with rotor flux orientation method, using five-level cascaded H-bridge inverter. The results are verified by simulation using PSIM software shows the motor able to operates in the overmodulation region with better electric torque response.

References

Bin Wu, High-Power Converters And AC Drives, John Wiley & Sons, 2006.

Chellammal N, Abirami R, Tatipamula Mohana, Subhransu Sekar Dash, “Switching Frequency Optimal PWM Based Three Phases Hybrid Multilevel Inverter”, International Conference on Design and Manufacturing (IconDM 2013), Vol 64, 2013, p.302-311.

N.P. Quang, J.-A. Dittrich, Vector Control of Three-Phase AC Machines, Springer, 2008.

Sandeep Goyat, Rajesh Kr. Ahuja, “Speed Control of Induction Motor using Vector or Field Oriented Control”, International Journal of Advances in Engineering & Technology, Vol 4(Issue 1), July 2012, p.475-482.

Published

2015-09-08

Issue

Vol. 107 No. 8 (2015): Journal of Natural Science

Section

Journal of Natural Sciences