DC Motor Controller, Brushless DC Motors, Brushed DC Motors

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Applications

Applications for our motors include:
· Electric bicycles
· Solar water pumps
· DC air-conditioners
· Electric utility vehicles /trolleys
· Industrial motors
· Electric wheelchairs/scooters
· Winches
· Automatic doors
· Boat winches
· Conveyors
· Agricultural equipment
· Medical equipment
· Portable air compressors

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Technical Date

Brushless DC Motors constitute a small percentage of the total global production of electric motors. The main workhorse of the electric motors worldwide has been the AC induction motor (3 phase) mainly due to its low manufacturing costs an low maintenance.
The Brushless DC Motors are mainly used in applications where there is no AC power available and where control speed is necessary. Brushless DC Motors are also easier to reverse requiring only change of polarity on the input terminals.
Over the past 2 decades with the advancement and price reduction of the frequency inverters saw the gradual popularity of variable AC drives against the variable DC drives (brushed). The main disadvantage of the brushed DC variable drives is their high maintenance due to the brush wear. Over the last few years with the advancement and price reduction of the rare earth magnets and improvements of the power electronics saw an increase in popularity of the Brushless DC Motors.

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Contact Us
Mobile Phone: 13906683609
Tel:86-574-86503060
Fax:86-574-86503120
Add:No.3 XuJia Road,WangChun Industrial Zone,YinZhou District,Ningbo Zhejiang,P.R.China

EMP DC MOTOR DYNAMICS is a wholly owned foreign venture in china dealing with the design development and manufacture of D.C motors both brushed and brushless. Our products include permanent magnet motors in metric & NEMA frames (brushed and brushless), gear motors, controllers as well as generators.

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News

Adaptive neural speed controller of a dc motor

An adaptive neural speed controller of a dc motor is proposed. The artificial neural network (ANN) is trained by the online backpropagation algorithm. The output of the ANN gives the control voltage applied to the dc motor. The difference between the reference and the actual roto...

Theory of the D. C. Motor Controlled by Power Pulses Part I - Motor Operation

This paper describes the theoretical relations between currents, fluxes and pulse duration in a DC motor energized by power pulses. From these values, the average torque and speed as well as their instantaneous variations are calculated. The non-linearity of the magnetic circuit ...

Advanced fault diagnosis of a DC motor

This paper presents a model of the DC motor with an eccentric rotor. The winding function theory shows the effect of eccentricity fault on the motor inductances and the simulation is done using a nonsymmetric air-gap function. A modified equation is presented to show the existenc...

In-Wheel Permanent-Magnet Brushless DC Motor Drive for an Electric Bicycle

This paper presents the design of an axial-field permanent-magnet (PM) brushless dc motor drive for use on an electric bicycle. Details of the motor and the electronic converter are given. Performance analysis using the finite element method is briefly discussed. A prototype moto...

Experimental and analytical studies of the sinusoidal dither signal in a DC motor system

In this article we are concerned with the implementation of a dither signal for a closed-loop DC motor system. Experimental studies show that the system contains two nonlinearities that are saturated with dead zone and backlash. Parameter estimation techniques are used to i...

The aim of this paper is to demonstrate the importance of system approach to elastodynamic modeling of high speed

The aim of this paper is to demonstrate the importance of system approach to elastodynamic modeling of high speed, flexible mechanisms when response is determined during start-up. A mechanism system consisting of four-bar (4R) linkage and a drive train comprised of a d.c. motor, ...

Switch fault diagnosis of PM brushless DC motor drive using adaptive fuzzy techniques

An adaptive neuro-fuzzy inference system (ANFIS) is developed to diagnose open switch faults of PM brushless dc motor drives. Features extracted under healthy and faulty operations using wavelet transform are used to train ANFIS. Testing of the proposed diagnostic system shows it...

Dynamic performance of a permanent magnet brushless DC motor powered by a PV array for water pumping

The dynamic performance of a permanent magnet brushless DC (PMBDC) motor connected to photovoltaic (PV) array through an inverter is analyzed. The mathematical models of PV array, inverter/motor and controller are developed. The photovoltaic array is represented by an equivalent ...

DC motor velocity control through a DC-to-DC power converter

This paper considers the development of a smooth "starter" for a DC motor based on a switch controlled DC-to-DC power converter of the "buck" type. The dynamic feedback controller is based on a suitable combination of passivity based control, flatness and a Σ - Δ modulator implem...

Neural network control for DC motor micromaneuvering

The application of a neural network controller for compensating the effects induced by the friction in a DC motor micromaneuvering system is considered in this article. A backpropagation neural network operating in the specialized learning mode, using the sign gradient descent al...