View/Download-PDF - International Journal of Computer Science
... of equipment must have higher performance parameters such as better efficiency and reduced electromagnetic interference the Brushless DC (BLDC) motors are constructed. BLDC motor has increased its use in the modern technology due to their high efficiency, silent operation, compact form, high reliabi ...
... of equipment must have higher performance parameters such as better efficiency and reduced electromagnetic interference the Brushless DC (BLDC) motors are constructed. BLDC motor has increased its use in the modern technology due to their high efficiency, silent operation, compact form, high reliabi ...
display
... Motor modules will be self-regulated The power distribution board will provide 5V and 12V to the PC104 stack Features: • Over current protection to onboard electronics • Voltage surge protection • Provide regulated aux outputs ( two 12Vdc and two 5Vdc line) • Its scalable by ‘stacking’ additional po ...
... Motor modules will be self-regulated The power distribution board will provide 5V and 12V to the PC104 stack Features: • Over current protection to onboard electronics • Voltage surge protection • Provide regulated aux outputs ( two 12Vdc and two 5Vdc line) • Its scalable by ‘stacking’ additional po ...
electric motors
... From: Single-Phase Electric Motors for Farms Use, U S Department of Agriculture, Farmer’s Bulletin No. 2177. Motor Control Control switches for electric motors must be able to withstand the high starting currents required by the motor, and the arcing that occurs when the circuit opens. "Quick-make, ...
... From: Single-Phase Electric Motors for Farms Use, U S Department of Agriculture, Farmer’s Bulletin No. 2177. Motor Control Control switches for electric motors must be able to withstand the high starting currents required by the motor, and the arcing that occurs when the circuit opens. "Quick-make, ...
2014
... 4. a) Explain in detail how a DC shunt generator builds up its voltage. Discuss the conditions to be satisfied for the buildup of voltage? What limits the voltage to which it can build up? b) Sketch the complete load characteristics of a DC series generator and indicate there in the region of operat ...
... 4. a) Explain in detail how a DC shunt generator builds up its voltage. Discuss the conditions to be satisfied for the buildup of voltage? What limits the voltage to which it can build up? b) Sketch the complete load characteristics of a DC series generator and indicate there in the region of operat ...
Teknologi Elektrik - ENCON
... • Generator action: An emf (voltage) is induced in a conductor if it moves through a magnetic field. • Motor action: A force is induced in a conductor that has a current going through it and placed in a magnetic field • Any DC machine can act either as a generator or as a motor. ...
... • Generator action: An emf (voltage) is induced in a conductor if it moves through a magnetic field. • Motor action: A force is induced in a conductor that has a current going through it and placed in a magnetic field • Any DC machine can act either as a generator or as a motor. ...
From washing machine motor to micro hydro generator
... at a speed of more than 1000 rpm using one direct drive motor. This was a very difficult call, because it required that the motor be able to go forward and reverse every second or so for maybe twenty minutes while washing and then be able to spin at more than 1000 rpm. The permanent magnet motor has ...
... at a speed of more than 1000 rpm using one direct drive motor. This was a very difficult call, because it required that the motor be able to go forward and reverse every second or so for maybe twenty minutes while washing and then be able to spin at more than 1000 rpm. The permanent magnet motor has ...
TORQUE
... Voltage can be induced into a wire that is in a magnetic field. This happens when the magnetic flux is cut by the wire. In some cases, the wire moves. In other cases, the field moves. In still others, both are moving, but at different speeds. It takes mechanical energy to cause the motion. This moti ...
... Voltage can be induced into a wire that is in a magnetic field. This happens when the magnetic flux is cut by the wire. In some cases, the wire moves. In other cases, the field moves. In still others, both are moving, but at different speeds. It takes mechanical energy to cause the motion. This moti ...
ME1010: Testing Your Motor for Torque
... Step 1. Set the unloaded (disconnected) voltage from the power supply to about 3.75V (3.73-3.77 is okay). Turn up the “coarse” current to about 1/3rd full scale so current will be flowing. Use the voltmeter in parallel to get an accurate reading of the voltage, but do not record it. It is the upper ...
... Step 1. Set the unloaded (disconnected) voltage from the power supply to about 3.75V (3.73-3.77 is okay). Turn up the “coarse” current to about 1/3rd full scale so current will be flowing. Use the voltmeter in parallel to get an accurate reading of the voltage, but do not record it. It is the upper ...
Synchronous Generators
... In the picture above, we have in fact managed to build what is called a 2-pole permanent magnet synchronous motor. The reason why it is called a synchronous motor, is that the magnet in the centre will rotate at a constant speed which is synchronous with (running exactly like the cycle in) the rotat ...
... In the picture above, we have in fact managed to build what is called a 2-pole permanent magnet synchronous motor. The reason why it is called a synchronous motor, is that the magnet in the centre will rotate at a constant speed which is synchronous with (running exactly like the cycle in) the rotat ...
Poster
... Objective: To transform mechanical energy produced by a bicycle to electrical energy with intention to charge a cell phone. Our device is designed to be inexpensive to build and easy to install, maintain and use. Background and Motivation: People in countries with inadequate infrastructure have an u ...
... Objective: To transform mechanical energy produced by a bicycle to electrical energy with intention to charge a cell phone. Our device is designed to be inexpensive to build and easy to install, maintain and use. Background and Motivation: People in countries with inadequate infrastructure have an u ...
Rotating DC Motors Part I
... In the previous sections the operation of rotating DC motors was introduced. It was shown that the force exerted on a current-carrying conductor in a magnetic field can be used to turn a motor − electrical energy is converted into a mechanical energy. In a later lesson, generators will be introduced ...
... In the previous sections the operation of rotating DC motors was introduced. It was shown that the force exerted on a current-carrying conductor in a magnetic field can be used to turn a motor − electrical energy is converted into a mechanical energy. In a later lesson, generators will be introduced ...
Jan
... Two shunt generators X and Y work in parallel. Their external characteristics may be assumed to be linear over their normal working range. The terminal voltage of X falls from 265 V on no load to 230 V when delivering 350 A to the bus bars, while the voltage of Y falls from 270 V on no load to 240 V ...
... Two shunt generators X and Y work in parallel. Their external characteristics may be assumed to be linear over their normal working range. The terminal voltage of X falls from 265 V on no load to 230 V when delivering 350 A to the bus bars, while the voltage of Y falls from 270 V on no load to 240 V ...
DC Motors, Stepper Motors, H
... by pausing the sequence and keeping one coil energized for the duration of the hold time • Hence, a stepper motor can be used in similar applications as a servomotor (studied in CS341) – It can be moved to and held in a desired position – It can be rotated continuously at a controlled speed ...
... by pausing the sequence and keeping one coil energized for the duration of the hold time • Hence, a stepper motor can be used in similar applications as a servomotor (studied in CS341) – It can be moved to and held in a desired position – It can be rotated continuously at a controlled speed ...
Introduction - City University of New York
... nominal supply voltage armature resistance maximum power output maximum efficiency no-load speed no-load current friction torque stall torque velocity constant back EMF constant torque constant armature inductance ...
... nominal supply voltage armature resistance maximum power output maximum efficiency no-load speed no-load current friction torque stall torque velocity constant back EMF constant torque constant armature inductance ...
Brushed DC electric motor
A brushed DC motor is an internally commutated electric motor designed to be run from a direct current power source. Brushed motors were the first commercially important application of electric power to driving mechanical energy,and DC distribution systems were used for more than 100 years to operate motors in commercial and industrial buildings. Brushed DC motors can be varied in speed by changing the operating voltage or the strength of the magnetic field. Depending on the connections of the field to the power supply, the speed and torque characteristics of a brushed motor can be altered to provide steady speed or speed inversely proportional to the mechanical load. Brushed motors continue to be used for electrical propulsion, cranes, paper machines and steel rolling mills. Since the brushes wear down and require replacement, brushless DC motors using power electronic devices have displaced brushed motors from many applications