Optimal Efficiency Controller of AC Drive System
... B- Improvement of power supply parameters. C- Utilizing a suitable optimal control technique. Motor operation under rated conditions is highly efficient [5], however, in many applications, when induction motor works at variable speed it has more losses and less efficiency, so it operates far from th ...
... B- Improvement of power supply parameters. C- Utilizing a suitable optimal control technique. Motor operation under rated conditions is highly efficient [5], however, in many applications, when induction motor works at variable speed it has more losses and less efficiency, so it operates far from th ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... The power source is presented in the source block with voltage U supplying the transistorised inverter simulation block. The order of commutation of phases is defined depending on the rotor’s angle of rotation by the rotor position block, which, by imitating the operation of the position captor, gen ...
... The power source is presented in the source block with voltage U supplying the transistorised inverter simulation block. The order of commutation of phases is defined depending on the rotor’s angle of rotation by the rotor position block, which, by imitating the operation of the position captor, gen ...
Synchronous Generator.
... ii) Asynchronous (Induction) Machines: • Induction Motors: Most widely used electrical motors in both domestic and industrial applications. • Induction Generators: Due to lack of a separate field excitation, these machines are rarely used as generators. ...
... ii) Asynchronous (Induction) Machines: • Induction Motors: Most widely used electrical motors in both domestic and industrial applications. • Induction Generators: Due to lack of a separate field excitation, these machines are rarely used as generators. ...
Industrial Maintenance Mechanics Blueprint
... In an industrial setting, the letters PM mean A. preventive maintenance B. possible machines C. production machining D. possible maintenance The correct tool for fitting a new bearing on a shaft is a/an A. vise B. arbor press C. hydraulic ram D. hammer and sleeve The basic unit of potential differen ...
... In an industrial setting, the letters PM mean A. preventive maintenance B. possible machines C. production machining D. possible maintenance The correct tool for fitting a new bearing on a shaft is a/an A. vise B. arbor press C. hydraulic ram D. hammer and sleeve The basic unit of potential differen ...
ii. structure of the power chain - International Journal of Scientific
... electromagnetic switches according trapeze control strategy which maintains the motor’s phase electric current in phase with the electromotive force, which leads to a minimization of the energy consumption. In this case the switches K and K2 are open, by action of their command generating coils. How ...
... electromagnetic switches according trapeze control strategy which maintains the motor’s phase electric current in phase with the electromotive force, which leads to a minimization of the energy consumption. In this case the switches K and K2 are open, by action of their command generating coils. How ...
proj-scratch-motor-ctrl - Build-It
... If the voltage between the Gate and Source of this N-channel MOSFET is < 2 volts, no current can flow between the Drain and Source terminals. The motor will not run. If the Gate to Source voltage is > 4 volts, then current will flow between the Drain and Source and the motor will run. Adjust R2 so m ...
... If the voltage between the Gate and Source of this N-channel MOSFET is < 2 volts, no current can flow between the Drain and Source terminals. The motor will not run. If the Gate to Source voltage is > 4 volts, then current will flow between the Drain and Source and the motor will run. Adjust R2 so m ...
Electricity Ch. 18 Sect. 2
... Electromagnetism 〉What happens to a compass near a wire that is carrying a current? 〉When the wire carries a strong, steady current, all of the compass needles move to align with the magnetic field created by the electric current. • Hans Christian Oersted found that magnetism is produced by moving e ...
... Electromagnetism 〉What happens to a compass near a wire that is carrying a current? 〉When the wire carries a strong, steady current, all of the compass needles move to align with the magnetic field created by the electric current. • Hans Christian Oersted found that magnetism is produced by moving e ...
DC-AC-Motors-Control
... of the torque produced by the output shaft never changes [3]. This makes the DC motor perfect for applications that have large startup loads, particularly automotive applications (like the drive wheels in electric vehicles, for instance), where DC power is readily available under most circumstances. ...
... of the torque produced by the output shaft never changes [3]. This makes the DC motor perfect for applications that have large startup loads, particularly automotive applications (like the drive wheels in electric vehicles, for instance), where DC power is readily available under most circumstances. ...
Pulsating Signal Injection-Based Axis Switching Sensorless Control
... synchronous frame, the envelope of the resulting HF current measured in the stationary reference frame follows an amplitude-modulated pattern. ...
... synchronous frame, the envelope of the resulting HF current measured in the stationary reference frame follows an amplitude-modulated pattern. ...
ET 332b AC Electric Machines and Power
... when data tables are short. (10 entries or less) Use figures to show how test setups were connected. Schematics of the models and circuits constructed for the experiment should also be included. Various software ...
... when data tables are short. (10 entries or less) Use figures to show how test setups were connected. Schematics of the models and circuits constructed for the experiment should also be included. Various software ...
DESIGN AND FABRICATION OF SINGLE PHASE INDUCTION
... conductors by the transformer action. The starting torque in the motor is developed by adjusting the position of the short-circuited brushes on the commutator [1]. Principle of operation A single phase Ac motor with transformer action coupling between the windings of the stator and rotor. The stator ...
... conductors by the transformer action. The starting torque in the motor is developed by adjusting the position of the short-circuited brushes on the commutator [1]. Principle of operation A single phase Ac motor with transformer action coupling between the windings of the stator and rotor. The stator ...
Effective Estimation of Induction Motor Field Efficiency Based on On-site Measurements
... Considering the results obtained, it can be stated with confidence that this simple fast and low-cost technique will yield virtually the same results as using the sophisticated standard tests. 4. CONCLUSION The proposed technique for estimating efficiency of induction motor in the field has been des ...
... Considering the results obtained, it can be stated with confidence that this simple fast and low-cost technique will yield virtually the same results as using the sophisticated standard tests. 4. CONCLUSION The proposed technique for estimating efficiency of induction motor in the field has been des ...
COMPARISON OF SCALAR AND VECTOR CONTROL
... available to control the speed and torque of the motor. Many applications require that the same torque be available at all revolutions up to the nominal value. In this paper two control methods are compared: scalar control and vector control. Scalar control is a relatively simple method. The purpose ...
... available to control the speed and torque of the motor. Many applications require that the same torque be available at all revolutions up to the nominal value. In this paper two control methods are compared: scalar control and vector control. Scalar control is a relatively simple method. The purpose ...
PDF
... starting torque. SPIMs are typically classified acbecause the auxiliary winding has more turns than the cording to their starting technique. SINGLE-phase induction motors (SPIMs) are employed widely in the fractional power range, particularly in house-holds where a three-phase ac electrical supply i ...
... starting torque. SPIMs are typically classified acbecause the auxiliary winding has more turns than the cording to their starting technique. SINGLE-phase induction motors (SPIMs) are employed widely in the fractional power range, particularly in house-holds where a three-phase ac electrical supply i ...
hopkinson`s test - Bhagwant University
... normally known as Hopkinson’s test. This test overcomes the drawback of Swinburne’s test, which does not take any account of the stray load losses occurring in DC machines under loaded condition. As such the efficiency, calculated by Swinburne’s test is comparatively higher than the actual one. Hopk ...
... normally known as Hopkinson’s test. This test overcomes the drawback of Swinburne’s test, which does not take any account of the stray load losses occurring in DC machines under loaded condition. As such the efficiency, calculated by Swinburne’s test is comparatively higher than the actual one. Hopk ...
NOVATORQUE® EC PERMANENT MAGNET MOTOR
... geometry produces rare-earth-like motor performance using inexpensive, readily available, ferrite magnets. They deliver a whole new class of electric motors that provide the performance of a permanent magnet motor at a cost more similar to premium induction motors. ...
... geometry produces rare-earth-like motor performance using inexpensive, readily available, ferrite magnets. They deliver a whole new class of electric motors that provide the performance of a permanent magnet motor at a cost more similar to premium induction motors. ...
Electric motor
An electric motor is an electrical machine that converts electrical energy into mechanical energy. The reverse of this would be the conversion of mechanical energy into electrical energy and is done by an electric generator.In normal motoring mode, most electric motors operate through the interaction between an electric motor's magnetic field and winding currents to generate force within the motor. In certain applications, such as in the transportation industry with traction motors, electric motors can operate in both motoring and generating or braking modes to also produce electrical energy from mechanical energy.Found in applications as diverse as industrial fans, blowers and pumps, machine tools, household appliances, power tools, and disk drives, electric motors can be powered by direct current (DC) sources, such as from batteries, motor vehicles or rectifiers, or by alternating current (AC) sources, such as from the power grid, inverters or generators. Small motors may be found in electric watches. General-purpose motors with highly standardized dimensions and characteristics provide convenient mechanical power for industrial use. The largest of electric motors are used for ship propulsion, pipeline compression and pumped-storage applications with ratings reaching 100 megawatts. Electric motors may be classified by electric power source type, internal construction, application, type of motion output, and so on.Electric motors are used to produce linear or rotary force (torque), and should be distinguished from devices such as magnetic solenoids and loudspeakers that convert electricity into motion but do not generate usable mechanical powers, which are respectively referred to as actuators and transducers.