#back emf

[ijtsrd]

Modeling and Simulation of Cost Effective Sensor Less BLDC Motor Drive for Electric Vehicle Applications

by Saravanakumar M | Adhithya Mannan M.B | Vinothini R | Gurusamy M" Modeling and Simulation of Cost Effective Sensor Less BLDC Motor Drive for Electric Vehicle Applications" 

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-1, December 2018, 

URL: http://www.ijtsrd.com/papers/ijtsrd18952.pdf

Direct Link: http://www.ijtsrd.com/engineering/electrical-engineering/18952/ modeling-and-simulation-of-cost-effective-sensor-less-bldc-motor-drive-for-electric-vehicle-applications/saravanakumar-m

paper publication for engineering, engineering journal, ugc approved journals for engineering

This proposed paper is to model and simulate the sensor less control of Brushless DC motor with four-switch three phase inverter. Here, a new structure of three phase inverter with reduced number of switches i.e. four-switch for BLDC drive is introduced to reduce the switching losses that occur in the six-switch method and eliminate the mechanical commutation. Conventionally used hall sensors for position detection increase the size of the motor and are temperature sensitive since they are mounted inside. So sensor is eliminated and the back emf method is adopted for switching. The zero-crossing point can be detected and it is used to commutate a motor thereby increasing the overall efficiency. 

[craftersuniversity-blog]

How a DC motor works We all uses DC motors in one way or another. Even if you're not building a machine that have DC motors, you still engage them when you use a machine to brush your teeth, shave your hair or get a buzzing sound from your mobile phone.