Abstract
SHS investigation development is considered from the geographical and historical viewpoint. 3 stages are described. Within Stage 1 the work was carried out in the Department of the Institute of Chemical Physics in Chernogolovka where the scientific discovery had been made. At Stage 2 the interest to SHS arose in different cities and towns of the former USSR. Within Stage 3 SHS entered the international scene. Now SHS processes and products are being studied in more than 50 countries.
Abstract
This paper presents the study of a position sensorless Brushless DC Motor drive. Back emf detection is proposed to avoid the conventional methodology of rotor position sensing. An equivalent mathematical model of a Brushless DC motor is developed to obtain various parameters required for more accurate control of the drive. The analysis of the modelled drive is performed through simulation results at various speed steps suitable for adjustable speed drive. The drive suggested with a PID controller, equivalent mathematical model and Back emf detection provides a quick and efficient steady state performance during speed changes. Hence, due to the advantages of compact size, Quick response and overcoming conventional position sensing-based drawbacks, this drive is very well-suited for adjustable speed applications.
Keywords:
Adjustable speed drive, Back emf detection, Brushless DC motor, Mathematical model, Matlab simulation, PID control.
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Authors:Bentham Science Books