Simulation of open loop speed control of BLDC motor for electric vehicle application

Electric Vehicle has gained immense importance as an alternative to traditional vehicles which are driven by internal combustion engines. The electric motor plays a vital role in Electric vehicles. Efficiency and Reliability are the key features for the development of motor drives. Since BLDC motors have a wide range of applications, it needs to have an improvement in sensorless control techniques to subdue the disadvantages of the sensor-based techniques. Minimisation of switching losses is also a keen interest. This paper presents the simulation of the proposed model for the BLDC motor drive. A novel proposed model contains less switching action and a sensorless control technique which provides the sine-like wave as an input to the Motor which has less THD. The simulation of the BLDC motor drive is split into subsystems. Each subsystem simulation is done differently in different software. The simulation is done using LTSpice, MATLAB and Proteus environment. Later altogether clubbed and simulated in MATLAB environment where the performance of the model is verified. The commutation logic code is executed using Mplab X IDE, CCS PIC compiler.