Multiple sensor data fusion is necessary for effective condition monitoring as the electric machines operate in a wide range of diverse operations. This study investigates acquired vibration and current signals to establish reliable multi-fault diagnosis framework brushless DC (BLDC) motor. Faults stator rotor were created deliberately by shorting two adjacent windings creating hole on surface,...

This study tackles to develop a sensorless drive technique for brushless dc motors (BLDC) by using wavelet theory. Initially a BLDC motor with hall sensors is handled. The simulink model of the motor is established and the simulation performances are obtained. Then BLDC motor’s PWM pulses are produced by DS2201 dSPACE digital signal processing (DSP) rapid control prototyping kit. The time domai...

In this paper, a fault diagnosis algorithm for brushless DC (BLDC) motor drives is proposed to maintain control performance under switch open-damage. The proposed fault diagnosis algorithm consists of a simple algorithm using measured phase current information and it detects open-circuit faults based on the operating characteristic of BLDC motors. The proposed algorithm quickly recovers control...

This paper describes the analysis and design of a low cost three phase inverter brushless dc motor (BLDC) drive.For effective utilization of the developed system, a novel direct current controlled pwm scheme (DPC)is designed and implemented.. The operational principle of the four-switch BLDC motor drive and the developed control scheme are theoretically analyzed and the performance is demonstra...

The Permanent Magnet Brushless DC (BLDC) motor offers higher efficiency, low maintenance, reduced weight and compact construction. For many industrial applications, the BLDC motor is increasingly being used. This paper presents a new sensorless drive scheme for BLDC motor based on the back EMF difference. The commutation point of the drive is determined by detecting the Zero Crossing Point (ZCP...

The permanent magnet brushless DC motors are utilized more in automotive, industrial and household product due to its high torque density, compactness, high efficiency, low maintenance and simple control. BLDC motor is meant to utilize the trapezoidal back emf voltages with square wave currents to come up with constant torque. BLDC motor is electronically controlled and needs rotor position dat...

Brushless DC (BLDC) motor drives are becoming more popular in industrial, traction applications. This makes the control of BLDC motor in all the four quadrants very vitalThe motor is operated in four steady state operating modes of torque-speed plane. To control a BLDC machine it is generally required to measure the speed and position of rotor by using the sensor because the inverter phases, ac...

Recent trends in Radio Telescopes deploy BLDC motors for their 2-axis rotation. BLDC motors implement electronic commutation by avoiding carbon brushes and mechanical commutation. Resolvers mounted on rotor shaft of BLDC motors form good sensor feedback and work in-conjunction with RDC and FPGA interface to implement speed and position control. Brushes in DC torque form an important source of a...

Brushless DC (BLDC) motor drives are becoming more popular in industrial, traction applications. This makes the control of BLDC motor in all the four quadrants very vitalThe motor is operated in four steady state operating modes of torque-speed plane. To control a BLDC machine it is generally required to measure the speed and position of rotor by using the sensor because the inverter phases, ac...

Recently, BLDC motors have become very popular in wide application areas. The BLDC motor does not have a mechanical commutation, and is, consequently, more reliable than the classic DC motor. In recent years, with the increasing number of nonlinear loads drawing nonsinusoidal current, power quality has become a serious problem; hence an optimal control scheme must ensure the desired motor behav...