Title :
Sensorless implementation of an SCR-based commutatorless series motor drive
Author :
Mukherjee, Kaushik ; SenGupta, Sab Yasachi ; Bhattacharya, Tapas Kumar ; Bhadra, Sailendra N. ; Chattopadhyay, Ajit K.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., Kharagpur, India
Abstract :
This paper presents a new strategy of implementing a sensorless, load-commutated, silicon-controlled-rectifier (SCR) inverter-driven commutatorless series motor (CLSM) drive. The drive is started with the help of a position encoder, but, after four-five cycles, the operation is changed over to the "sensorless running" mode at about 10% of rated speed. The strategy, description and illustrative waveforms of the sensorless implementation are presented. It is followed by the description of the scheme of changeover from the "start" to the "sensorless running" mode. Finally, results of the experimental transient and steady state studies of the sensorless drive are furnished
Keywords :
commutation; invertors; starting; synchronous motor drives; thyristor convertors; thyristor motor drives; SCR-based commutatorless series motor drive; current source inverter; inverter-driven commutatorless drive; load-commutated series motor drive; position encoder; sensorless commutatorless series motor drive; sensorless running mode; start mode; steady state studies; synchronous motor drive; transient studies; Circuits; Commutation; DC motors; Inverters; Motor drives; Reluctance motors; Sensorless control; Synchronous motors; Thyristors; Voltage;
Conference_Titel :
Industrial Electronics Society, 2001. IECON '01. The 27th Annual Conference of the IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-7108-9
DOI :
10.1109/IECON.2001.976009
