Intelligent embedded controller for optimal triggering

This paper presents the analysis, design and implementation of a high performance cost effective 1-ph BLDC motor compatible with appliances like fan and pump. The inherent advantages like high efficiency and low noise make the BLDC motors an attractive solution for electrical appliances. Conventional appliance motors are direct online start induction motors and universal motors, which give unsatisfactory control flexibility leading to unnecessary energy consumption. The BLDC motor with electronic controllers gives user-friendly control in appliance application, leading to energy savings. The electronic controller provides the required flexibilities in features and protections to add unique selling proposition (USP). It provides smooth speed control of the motor in wired and wireless mode. The additional electronic controller makes the 3-phase BLDC motor costlier as compared to conventional motors. The work describes an alternative. The present alternative is a low cost 1-phase BLDC motor. The work focuses on the commutation angle estimation and adjustment to get adequate starting torque and also for better efficiency at all the speed ranges. The work describes the effects of hall sensor position, its adaptive estimation and dynamic optimization techniques. The simulated and experimental results show the feasibility of the present design.