Design and development of DC powered BLDC motor for Mixer-Grinder application

Abstract

Mixer grinder in a residential application works with a 230V 1phase AC supply and at present it operates with an universal motor. The efficiency of this motor is in the range of 40 ∼ 60%. At the wake of improving the efficiency with more reliable and easy control, the possibilities of BLDC motors in the application is explored. The design of a BLDC motor with a surface mounted rotor and interior permanent magnet is carried out to meet the performance requirement of mixer-grinder application. Finite element analysis of this BLDC machine is performed and results are presented. The performance of a conventional mixer-grinder with mixer load and dynamometer is evaluated. A prototype of BLDC with surface mounted rotor configuration is developed. The performance comparison of mixer with conventional and BLDC motor is discussed in this paper. The design of mixer motor with 48V DC and 300V DC power supply is also done and performance of 300V DC is evaluated.