Speed control of robust position sensor less PMBLDC motor by Fuzzy controller

The aim of this work is to present a novel mechanical sensor-less control approach for permanent magnet brushless DC (PMBLDC) motors based on speed independent H functions. starting the motor and driving it from low rated are two significant problems in operation PMBLDC drives. commutation moment determined using speed-independent function. Since instant independent, may be anticipated even at speeds. function entirely dependent online voltages, which simplifies reduces cost whole system. suggested eliminates need analogue filtering phase correction. Digital pass filters digital compensators used remove ripple line voltages. This results system that small, simple use, effective. economical option ideal low-cost equipment such as fans, air conditioners, refrigerators, vacuum cleaners. method implemented fuzzy controller demonstrate proposed technique’s efficacy wide variations.