Safe operation of electric motor drives is of prime research interest in various industrial applications. This paper presents a new fault diagnosis system for open circuit switch faults in three phases Voltage Source Inverter (VSI) drive of the permanent magnet Brushless DC (BLDC) motors. The proposed fault diagnosis system is capable of detecting as well as identifying the faulty switch in the...

Brushless DC (BLDC) motors are widely used for many industrial applications because of their high efficiency, high torque and low volume. In view of the problem that the current control method of speed regulation system of BLDC motor has poor control effect caused by fixed parameters of PID controller, an adaptive PID algorithm with quadratic single neuron (QSN) was designed. Quadratic performa...

Abstract Brushless DC motors (BLDCMs) with their own performance of obvious advantages: good speed regulation and high efficiency. BLDCMs have continuously replaced brushed induction in many competitive fields obtained more extensive applications. The common-mode voltage (CMV) the motor parasitic capacitance coupling shaft induces voltage. It then triggers current, resulting electrical corrosio...

The paper presents the analysis of two basic control strategies, the series thermostat control strategy and the series power follower control strategy, used for series hybrid electric vehicles. One of these control strategies, the series thermostat control strategy, is programmed and installed in an electronic control unit to manage the power flow of a two-seat series hybrid electric vehicle de...

Received Feb 14, 2017 Revised Apr 14, 2017 Accepted Apr 29, 2017 Brushless DC (BLDC) motors are becoming an increasingly popular motor of choice for its unique characteristics. The BLDC motor drive is assumed to have trapezoidal back-electromotive force (EMF), rectangular phase currents and together produces the desired torque. However, practical back-EMF waveform might not be exactly trapezoid...

In this paper effort is made for the torque ripple minimization of 70 W, 24 Volt, 350 rpm, surface mounted radial permanent brushless DC (SPM BLDC) motor. The stator slot shaping is analyzed. The results obtained from FE analyses have been discussed. Design of stator slots have influence upon the cogging torque. Options available for slot designs viz, square type slots, square with curved tangs...

Simultaneously, motion control applications are increasing in complexity from simple on/off-type controls to variable speed applications with precise control systems that operate in a highly-integrated environment. The key components that apply to multiple control schemes across AC, DC, brushed, and brushless motors are: user interface, microcontroller (MCU) and control logic. A sensor interfac...

Cogging torque is the major limitation of axial flux permanent magnet motors. The reduction of cogging torque during the design process is highly desirable to enhance the overall performance of axial flux permanent magnet motors. This paper presents a double-layer magnet design technique for cogging torque reduction of axial flux permanent magnet motor. Initially, 250 W, 150 rpm axial flux brus...

Brushless DC(BLDC) motors are widely used for many industrial applications, In view of the problem that it is difficult to tune the parameters and get satisfied control characteristics by using normal conventional PID controller. a online identification method based on Radial Basis Function(RBF) has been proposed in this paper. In this method, connection weight of neural network was revised in ...

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...