Field Oriented Control of Permanent Magnet Synchronous Motor
... functions in the PM motors. Such decoupled torque and magnetization control is commonly called rotor flux oriented control, or simply FOC. Independent Control of Torque and Speed can be achieved by using the Field Oriented Control where two currents responsible for Torque and Field are separately re ...
... functions in the PM motors. Such decoupled torque and magnetization control is commonly called rotor flux oriented control, or simply FOC. Independent Control of Torque and Speed can be achieved by using the Field Oriented Control where two currents responsible for Torque and Field are separately re ...
Development of the Descent Brake Mechanism for the Mars Science
... sized to be able to meet all torque requirements without any gearing to keep sources of error at a minimum. This type of test setup allowed for a flexible test rig that could be adapted to many different scenarios. The DC servo system also allowed for flexibility in test profiles with only changes i ...
... sized to be able to meet all torque requirements without any gearing to keep sources of error at a minimum. This type of test setup allowed for a flexible test rig that could be adapted to many different scenarios. The DC servo system also allowed for flexibility in test profiles with only changes i ...
Motor Starting Characteristics of Star
... • Applications with a load torque higher than 50 % of the motor rated torque will not be able to start using the start-delta starter. • Low Starting Torque: reduction of the line voltage by a factor of 1/√3 (57.7%) to the motor and the current is reduced to 1/3 of the current at full voltage, but th ...
... • Applications with a load torque higher than 50 % of the motor rated torque will not be able to start using the start-delta starter. • Low Starting Torque: reduction of the line voltage by a factor of 1/√3 (57.7%) to the motor and the current is reduced to 1/3 of the current at full voltage, but th ...
MAXIMUM DEMAND CONTROLLER
... Slip power recovery is a more efficient alternative speed control mechanism for use with slip-ring motors. In essence, a slip power recovery system varies the rotor voltage to control speed, but instead of dissipating power through resistors, the excess power is collected from the slip rings and ret ...
... Slip power recovery is a more efficient alternative speed control mechanism for use with slip-ring motors. In essence, a slip power recovery system varies the rotor voltage to control speed, but instead of dissipating power through resistors, the excess power is collected from the slip rings and ret ...
Lecture-10-11-12: Mathematical Modeling of
... DC drives in a number of ways. • Variable Voltage can be applied to the armature terminals of the DC motor . • Another method is to vary the flux per pole of the motor. • The first method involve adjusting the motor’s armature while the latter method involves adjusting the motor field. These methods ...
... DC drives in a number of ways. • Variable Voltage can be applied to the armature terminals of the DC motor . • Another method is to vary the flux per pole of the motor. • The first method involve adjusting the motor’s armature while the latter method involves adjusting the motor field. These methods ...
Influence of Number of Poles, Magnet Arrangement, and Current
... normalized torque is calculated with respect to the torque at a current density of 5 A/mm2. In all of the models, the normalized torque is not proportional to the current density because of the magnetic saturation from the high current. For the 6-pole machines, the IR type SPM model has the highest ...
... normalized torque is calculated with respect to the torque at a current density of 5 A/mm2. In all of the models, the normalized torque is not proportional to the current density because of the magnetic saturation from the high current. For the 6-pole machines, the IR type SPM model has the highest ...
Closed Loop Control of Separately Excited DC Motor
... The variable speed, reliability and high performance are three main characteristics of an electric drive system due to which it can be easily controlled. The field of motor is connected directly to the power supply for the speed control. At the same time it is necessary for torque and speed control. ...
... The variable speed, reliability and high performance are three main characteristics of an electric drive system due to which it can be easily controlled. The field of motor is connected directly to the power supply for the speed control. At the same time it is necessary for torque and speed control. ...
3
... the circuit parameters are expressed in per unit on the generator base of 892.4 MVA, 60 Hz frequency. Reactances are proportional to frequency and resistances are constant. This system configuration corresponds to the Navajo Project‟s 892.4 MVA, 500 kV transmission systems. This model is flexible fo ...
... the circuit parameters are expressed in per unit on the generator base of 892.4 MVA, 60 Hz frequency. Reactances are proportional to frequency and resistances are constant. This system configuration corresponds to the Navajo Project‟s 892.4 MVA, 500 kV transmission systems. This model is flexible fo ...
Gear Trains
... are far too high to be useful, and at torques that are far too low. Gear reduction is the standard method by which a motor is made useful. ...
... are far too high to be useful, and at torques that are far too low. Gear reduction is the standard method by which a motor is made useful. ...
(3) and
... When dealing with small motors, transients settle quickly, and therefore, provided that the system is well behaved, it is usually the steady-state response that is important. Let the steady-state change in speed with change in load be ...
... When dealing with small motors, transients settle quickly, and therefore, provided that the system is well behaved, it is usually the steady-state response that is important. Let the steady-state change in speed with change in load be ...
experimental results
... The simulation circuit will include all realistic components of the drive system. A closed loop control system with a PI controller in the speed loop has been designed to operate in constant torque region. Simulation results are given for the speed range in constant torque region of motor operation. ...
... The simulation circuit will include all realistic components of the drive system. A closed loop control system with a PI controller in the speed loop has been designed to operate in constant torque region. Simulation results are given for the speed range in constant torque region of motor operation. ...
Electric Drives
... The series motor has poor speed regulation. It delivers increasing torque with increased motor current but this is at the expense of speed which falls with increasing torque demands. This motor has a very high starting torque because there is zero back EMF at zero speed however as the speed builds u ...
... The series motor has poor speed regulation. It delivers increasing torque with increased motor current but this is at the expense of speed which falls with increasing torque demands. This motor has a very high starting torque because there is zero back EMF at zero speed however as the speed builds u ...
Speed Control of Three Phase Induction Motor by Stator
... speed as the operation of the voltages if higher than the rated voltage is not admissible. This method is suitable where the intermittent operation of the drive is required and also for the fan and pump drives. As in fan and pump the load torque varies as the square of the speed. These types of driv ...
... speed as the operation of the voltages if higher than the rated voltage is not admissible. This method is suitable where the intermittent operation of the drive is required and also for the fan and pump drives. As in fan and pump the load torque varies as the square of the speed. These types of driv ...
DC motor load characteristics
... The dc motor is a highly versatile machine. It has superior torque and speed range capabilities as compared to induction motors driven from constant frequency supply. It is capable of quick reversal, and speed control over a wide range is achieved relatively easily. For this reason they are selected ...
... The dc motor is a highly versatile machine. It has superior torque and speed range capabilities as compared to induction motors driven from constant frequency supply. It is capable of quick reversal, and speed control over a wide range is achieved relatively easily. For this reason they are selected ...
Experiment – 4 Characterization of DC Motor: Part 2
... For determining the friction parameters, the MOTOR will be run under no-load conditions as done in the previous experiment (Experiment 3). Since the MOTOR has to overcome only friction (TL = 0), the electromagnetic torque (Te = kTIa) will follow the linear friction model (see equation (3)) in steady ...
... For determining the friction parameters, the MOTOR will be run under no-load conditions as done in the previous experiment (Experiment 3). Since the MOTOR has to overcome only friction (TL = 0), the electromagnetic torque (Te = kTIa) will follow the linear friction model (see equation (3)) in steady ...
Mechanical Engineering Formulas For Motion Control
... the bat, usually 4/5 of the distance from the handle to the end of the bat that is called the "sweet spot." When a ball is hit at that spot, there is no shock to the hands swinging the bat. A batter has better control with a straight stick than a baseball bat because the radius of gyration is closer ...
... the bat, usually 4/5 of the distance from the handle to the end of the bat that is called the "sweet spot." When a ball is hit at that spot, there is no shock to the hands swinging the bat. A batter has better control with a straight stick than a baseball bat because the radius of gyration is closer ...
Traction System for Electric Vehicles Using a Variable Frequency
... Fossil fuels become each time less abundant and expensive, and with the problems of worldwide pollution, they also become inadequate to be used in such a large scale. The automotive industry is one of the biggest spenders of this limited resource. This fact may be changed with the use of electronic ...
... Fossil fuels become each time less abundant and expensive, and with the problems of worldwide pollution, they also become inadequate to be used in such a large scale. The automotive industry is one of the biggest spenders of this limited resource. This fact may be changed with the use of electronic ...
PM Synchronous Motor Drive
... This pop-up menu allows you to choose between speed and torque regulation. Schematic Button When you press this button, a diagram illustrating the speed and vector controllers schematics appears. Speed Controller section Speed cutoff frequency The speed measurement first-order low-pass filter cutoff ...
... This pop-up menu allows you to choose between speed and torque regulation. Schematic Button When you press this button, a diagram illustrating the speed and vector controllers schematics appears. Speed Controller section Speed cutoff frequency The speed measurement first-order low-pass filter cutoff ...
No Slide Title - Electrical & Computer Engineering
... Controlling speed with voltage DC motor model • The back emf depends only on the motor speed. ...
... Controlling speed with voltage DC motor model • The back emf depends only on the motor speed. ...
731 989USB - LD Didactic
... according to the stipulations the safety of both the operator as well as the device is guaranteed. However, safety cannot be guaranteed if the device is used improperly or handled carelessly. For that reason it is imperative that these instructions be read thoroughly and carefully before putting the ...
... according to the stipulations the safety of both the operator as well as the device is guaranteed. However, safety cannot be guaranteed if the device is used improperly or handled carelessly. For that reason it is imperative that these instructions be read thoroughly and carefully before putting the ...
edc-module_iib-three_phase_im
... Induction Motor Speed • At what speed will the IM run? – Can the IM run at the synchronous speed, why? – If rotor runs at the synchronous speed, which is the same speed of the rotating magnetic field, then the rotor will appear stationary to the rotating magnetic field and the rotating magnetic fie ...
... Induction Motor Speed • At what speed will the IM run? – Can the IM run at the synchronous speed, why? – If rotor runs at the synchronous speed, which is the same speed of the rotating magnetic field, then the rotor will appear stationary to the rotating magnetic field and the rotating magnetic fie ...
HIGH PRECISION TORQUE MEASUREMENT SYSTEMS IN DYNAMIC AND STATIC APPLICATIONS
... enabled a product tailored to test stand applications such as the T40 torque flange to be developed. The concept involves distinction between the fully functional measurement flange for standalone operation and the digital signal processing unit providing high flexibility. The test stand operator ca ...
... enabled a product tailored to test stand applications such as the T40 torque flange to be developed. The concept involves distinction between the fully functional measurement flange for standalone operation and the digital signal processing unit providing high flexibility. The test stand operator ca ...
Performing locked rotor test on squirrel cage motors
... A locked rotor or short-circuit test (LRT) performed on squirrel cage motors is part of the routine test series for such motors. The test is to confirm motor compliance with standard and customer requirements. This article presents basics about estimation methods of parameters to be evaluated when a ...
... A locked rotor or short-circuit test (LRT) performed on squirrel cage motors is part of the routine test series for such motors. The test is to confirm motor compliance with standard and customer requirements. This article presents basics about estimation methods of parameters to be evaluated when a ...
dc drive for universal motor
... Abstract: Universal motors are usually operated in AC mode and are controlled by means of triacs. This conventional solution is characterized by a cheap control hardware. On the other hand, it has some drawbacks. In particular the high peak to peak current gives poor motor efficiency and the consequ ...
... Abstract: Universal motors are usually operated in AC mode and are controlled by means of triacs. This conventional solution is characterized by a cheap control hardware. On the other hand, it has some drawbacks. In particular the high peak to peak current gives poor motor efficiency and the consequ ...
Dynamometer
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A dynamometer or ""dyno"" for short, is a device for measuring force, torque, or power. For example, the power produced by an engine, motor or other rotating prime mover can be calculated by simultaneously measuring torque and rotational speed (RPM).A dynamometer can also be used to determine the torque and power required to operate a driven machine such as a pump. In that case, a motoring or driving dynamometer is used. A dynamometer that is designed to be driven is called an absorption or passive dynamometer. A dynamometer that can either drive or absorb is called a universal or active dynamometer.In addition to being used to determine the torque or power characteristics of a machine under test (MUT), dynamometers are employed in a number of other roles. In standard emissions testing cycles such as those defined by the United States Environmental Protection Agency (US EPA), dynamometers are used to provide simulated road loading of either the engine (using an engine dynamometer) or full powertrain (using a chassis dynamometer). In fact, beyond simple power and torque measurements, dynamometers can be used as part of a testbed for a variety of engine development activities, such as the calibration of engine management controllers, detailed investigations into combustion behavior, and tribology.In the medical terminology, hand-held dynamometers are used for routine screening of grip and hand strength, and the initial and ongoing evaluation of patients with hand trauma or dysfunction. They are also used to measure grip strength in patients where compromise of the cervical nerve roots or peripheral nerves is suspected.In the rehabilitation, kinesiology, and ergonomics realms, force dynamometers are used for measuring the back, grip, arm, and/or leg strength of athletes, patients, and workers to evaluate physical status, performance, and task demands. Typically the force applied to a lever or through a cable is measured and then converted to a moment of force by multiplying by the perpendicular distance from the force to the axis of the level.