Recovery braking of variable-structure electronic commutator for BLDC motor

2012 ◽  
Vol 61 (4) ◽  
pp. 579-596
Author(s):  
Tomasz Biskup
Keyword(s):  
Theoretical Analysis ◽  
Electric Vehicle ◽  
High Efficiency ◽  
Variable Structure ◽  
Bldc Motor ◽  
Simple Construction ◽  
Permanent Magnet Motors ◽  
High Torque ◽  
Electronic Commutator ◽  
Standard Range

Abstract Permanent magnet motors are more and more frequently used in various applications. In this group motors with a trapezoidal EMF deserve a special attention. They are characterized by a simple construction, high efficiency and high torque overload. A certain drawback of BLDC motors are difficulties with an operation at a speed above the nominal value. The article presents the results of investigations into the variablestructure electronic commutator designed for the drive of a small electric vehicle equipped with BLDC motors. Such a solution allows extending the standard range of the drive’s speed. The considerations contained in the article focus on the possibilities and effects of regeneration mode in the proposed topology of converter. A theoretical analysis has been presented as well as computer simulations carried out by means of Matlab- Simulink, which were then verified at a laboratory. The tests were finished with trials conducted using a small electric vehicle Elipsa.

A reconfigurable structure electronic commutator for a dual BLDC motor EV drive

2012 ◽  
Vol 60 (4) ◽  
pp. 769-778
Author(s):  
T. Biskup ◽  
A. Bodora ◽  
A. Domoracki
Keyword(s):  
Control System ◽  
Electric Vehicle ◽  
Motor Drives ◽  
Bldc Motor ◽  
Motor Speed ◽  
Common Control ◽  
Speed Range ◽  
Constant Power Speed Range ◽  
Reconfigurable Structure ◽  
Electronic Commutator

Abstract An electronic commutator that can drive a PM BLDC motor either in the full bridge or half bridge configuration has been developed. This commutator allows increasing the motor speed over the nominal value, hence the motor is able to operate within a wide constant power speed range. An application of the commutator with a reconfigurable structure for the double drive of a small electric vehicle Elipsa has been presented. The driveline consists of two independent commutators feeding the motors coupled by gears with rear wheels of the vehicle. Both commutators are controlled by a common control system based on a signal microcontroller. The results of road tests indicate new areas of BLCD motor drives application. The fact that the BLCD motor work in the second speed range does not require any changes in the motor construction and at the same time does not significantly deteriorate the drive efficiency is an indisputable advantage of the presented solution

scholarly journals Modeling & design of a ANN controller for a BLDC motor on Propulsion Application for Hybrid Electric Vehicle

2019 ◽  
Vol 8 (2S11) ◽  
pp. 3994-4000
Keyword(s):  
Electric Vehicle ◽  
Hybrid Electric Vehicle ◽  
High Efficiency ◽  
Reactive Power ◽  
Control Strategies ◽  
Research Work ◽  
Torque Ripple ◽  
Voltage Source ◽  
Bldc Motor ◽  
Motor Speed

This paper proposes the brushless direct current (BLDC) motor with high power density and high efficiency characteristics may be used to propulsion framework for electric vehicle. The progressive model for BLDC motor under rotor flux linkage route reference frame might have been providing. Here we analyzed the chart of ann vector and principal of ann control strategies and proposing the ann based reactive power with BLDC motor. To make ann based framework on active power, torque ripple, dc voltage, power factors can be used BLDC motor was designed. After designed simulation results was test the validity of field weakening based on reactive power with BLDC for electric vehicle application. In this research work will introduced artificial neural network (ANN) for non electrical input used. To control the BLDC motor speed it can using pulse width modulated control of the voltage source inverter (VLSI) using DC link voltage (Vdc) controller. To perform electronic commutation by hall signal sensing they are using PWM signal, to generate PWM signal inbuilt encoder can be used in this circuit. Analyze the BLDC motor performance driving propulsion framework is carried out under the MATLAB/Simulink software’s and efficiency of whole frame work is calculated under various source conditions

scholarly journals Design and Fabrication of Electric Vehicle for Physically Challenged Person

2019 ◽  
Vol 8 (10) ◽  
pp. 4297-4300
Keyword(s):  
Electric Vehicle ◽  
Control Unit ◽  
Bldc Motor ◽  
Fuel Cost ◽  
Mechanical Structure ◽  
Current Scenario ◽  
Physically Challenged ◽  
Electronic Commutator

This article studies on a design and fabrication of Electric Vehicle (EV) for physically challenged person. In current scenario, a physically challenged person has facing a problem of transportation during their travel from one place to another place without safety and convenience. They find it difficult to react to situation in front of them. In order to solve these problems, an Electric Vehicle (EV) is designed where they can travel easily and safely. The major components of EV consist of battery, electronic commutator with control unit, BLDC motor and mechanical structure. The main merits of developed EV has no pollution, no fuel cost, less weight, modified mechanical structure, high pulling capacity, comfortable spacing for person travel, easy maintenance, less number components in comparison with existing EV. The gross weight of designed vehicle with load (person) has 300 kg (approximately). The performance of the developed EV is validated at different running conditions for monitoring the battery back-up and time durations.

Study on the Sliding Mode Control of BLDC Motor for Battery Electric Vehicle

2011 ◽  
Vol 65 ◽  
pp. 398-401
Author(s):  
Fu Jin Li ◽  
Xia Li ◽  
Cheng Qun Li
Keyword(s):  
Control System ◽  
Electric Vehicle ◽  
Control Strategy ◽  
Sliding Mode ◽  
Variable Structure ◽  
Battery Electric Vehicle ◽  
Bldc Motor ◽  
The Core ◽  
Sliding Mode Variable Structure ◽  
And Control

This paper introduces a control system of brushless direct current motor (BLDCM) for Battery Electric Vehicle. The core of the control system is the TMS320F28035 of TI Company. Hardware and control strategy were also introduced. The result of the simulation proved that it is very effective to use Sliding Mode Variable Structure as the control strategy.

scholarly journals Optimization of Air Gap Length and Capacitive Auxiliary Winding in Three-Phase Induction Motors Based on a Genetic Algorithm

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4407
Author(s):  
Mbika Muteba
Keyword(s):  
Genetic Algorithm ◽  
Design Process ◽  
Power Factor ◽  
High Speed ◽  
High Efficiency ◽  
Air Gap ◽  
Element Analysis ◽  
Three Phase ◽  
High Torque ◽  
Cage Induction Motor

There is a necessity to design a three-phase squirrel cage induction motor (SCIM) for high-speed applications with a larger air gap length in order to limit the distortion of air gap flux density, the thermal expansion of stator and rotor teeth, centrifugal forces, and the magnetic pull. To that effect, a larger air gap length lowers the power factor, efficiency, and torque density of a three-phase SCIM. This should inform motor design engineers to take special care during the design process of a three-phase SCIM by selecting an air gap length that will provide optimal performance. This paper presents an approach that would assist with the selection of an optimal air gap length (OAL) and optimal capacitive auxiliary stator winding (OCASW) configuration for a high torque per ampere (TPA) three-phase SCIM. A genetic algorithm (GA) assisted by finite element analysis (FEA) is used in the design process to determine the OAL and OCASW required to obtain a high torque per ampere without compromising the merit of achieving an excellent power factor and high efficiency for a three-phase SCIM. The performance of the optimized three-phase SCIM is compared to unoptimized machines. The results obtained from FEA are validated through experimental measurements. Owing to the penalty functions related to the value of objective and constraint functions introduced in the genetic algorithm model, both the FEA and experimental results provide evidence that an enhanced torque per ampere three-phase SCIM can be realized for a large OAL and OCASW with high efficiency and an excellent power factor in different working conditions.

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