Speed Sensorless Vector Control of Cascaded Inverter for Asynchronous Motor

Abstract:

According to speed sensorless vector control of Asynchronous motor for Cascaded high voltage inverter, a model reference adaptive system (MRAS) implemented in two phase rotating reference frame was studied to identify the rotor speed of an asynchronous motor. To eliminate the inherent limitations of MRAS in two phase stationary reference frame, the reference model and adjustable model used in this MRAS scheme are composed of an improved rotor flux voltage model and rotor flux current model in two phase rotating reference frame respectively. Simulation and experimental results show that the vector control system can estimate the flux and speed with good accuracy, and run with good static and dynamic performance in start, speed regulation and steady operation.

• Periodical: Applied Mechanics and Materials (Volumes 241-244)
• Pages: 1797-1801
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.241-244.1797
• Online since: December 2012
• Authors: Qi Yang, Yu Feng Zhang, Shi Bao Qian, Bing Li
• Keywords: Asynchronous Motor, Cascaded High Voltage Inverter, Model Reference Adaptive System (MRAS), Speed Sensorless, Vector Control (VC)

References

[1] P. Hammond: A new approach to enhance power quality for medium voltage AC drives. IEEE Trans. Ind. Applicat. Forum Vol. 39 (2003), p.202~208.

DOI: 10.1109/28.567113

[2] M. Marchesoni, M. Mazzucchelli and S. Tenconi: A Non-conventional Power Converter for Plasma Stabilization. IEEE Proc. of IEEE-PESC (1988), p.122~129.

DOI: 10.1109/pesc.1988.18125

[3] Anitha P, Badrul H C: Sensorless Control of Inverter-fed Induction Motor Drives. Electric Power Systems Research. Forum Vol. 77 (2007), p.619~629.

DOI: 10.1016/j.epsr.2006.05.014

[4] Ding Daohong, in: Power Electronics, edtied by Aviation Industry Publishing House, Bei Jing (1992).

[5] Maurizio C, Marcello P: Sensorless Direct Torque Control of an Induction Motor by a TLS-based MRAS Observer with Adaptive Integration. Automatica. Forum Vol. 41 (2005), p.1843~1854.

DOI: 10.1016/j.automatica.2005.06.004

[7] Feng Duosheng, Zeng Yuenan, in: Principle and practice of speed sensorless vector control, edtied by Machinery Industry Publishing House, Bei Jing (2004).

[6] Chen Boshi, Chen Minxun, in: AC Drive System, edtied by Machinery Industry Publishing House, Bei Jing (1998).

[8] Chen Boshi, in: Electricity Pull Automation Control System, edtied by Machinery Industry Publishing House, Bei Jing (2008).