Paper URL: https://www.ijtsrd.com/engineering/electrical-engineering/27821/design-and-performance-analysis-of-power-factor-controller/soe-winn
technology journal, open access journal of engineering, peer reviewed journal
Demand of electrical energy is increasing day by day and power quality is one of the buzzword nowadays in Myanmar. Customer awareness of power quality, elecctronics load sensitivity and automation of industrials are pushing hard to improve power quality as never before. Power factor improvement is one of the common ways to improve the quality of power in effective way. Researching power factor controller enhance the deployment of voltage sensing technique with potential transformer, current sensing technique with current transformer, zero crossing detection of voltage and current signals, zener voltage regulation, PIC microcontroller based control system and relay driver system. Voltage and current were sensed by potential and current transformers to evaluate the deviation of voltage and current singals with zero crossing detection circuits respectively. Microcontroller is fed voltage and current singals to determine the quality of power system and implement the relays to keep the power factor as high as possible by switching capacitors to improve power factor of the system.
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.
