IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... order to produce the maximum torque, which main component is proportional to q-axis component of the armature current it is convenient to control the inverter-fed PMSM by keeping the direct, d-axis, current component to be id to zero as long as the inverter output voltage doesn’t reach its limit At ...
... order to produce the maximum torque, which main component is proportional to q-axis component of the armature current it is convenient to control the inverter-fed PMSM by keeping the direct, d-axis, current component to be id to zero as long as the inverter output voltage doesn’t reach its limit At ...
Influence of Number of Poles, Magnet Arrangement, and Current
... Fig. 2 shows the magnet torque, reluctance torque, and total The seven types of motor models evaluated in this study torque of each model at the rated current of Ia = 11.8 A, are illustrated in Fig. 1, and the motor specifications are which corresponds to a current density of 5 A/mm2. The ORshown in ...
... Fig. 2 shows the magnet torque, reluctance torque, and total The seven types of motor models evaluated in this study torque of each model at the rated current of Ia = 11.8 A, are illustrated in Fig. 1, and the motor specifications are which corresponds to a current density of 5 A/mm2. The ORshown in ...
AC circuits
... direction. If only a single loop were used in the construction of a DC generator, a pulsating one directional current would be produced. To produce a steady DC current, many loops and commutators are used. ...
... direction. If only a single loop were used in the construction of a DC generator, a pulsating one directional current would be produced. To produce a steady DC current, many loops and commutators are used. ...
UNIT 5 INDUCTION MOTOR
... For large motors, the rotor is built up on a fabricated spider, the crosssection of which is shown below : ...
... For large motors, the rotor is built up on a fabricated spider, the crosssection of which is shown below : ...
ASSIGNMENT MEELC303 1 A 1500 nF capacitor is connected in
... 1 A three-phase transformer has 600 primary turns and 150 secondary turns. If the supply voltage is 1.5 kV determine the secondary line voltage on no-load when the windings are connected (a) delta-star (b) star-delta [(a) 649.5V (b) 216.5 V] 1 A 4-pole, wave-connected armature of a d.c. machine has ...
... 1 A three-phase transformer has 600 primary turns and 150 secondary turns. If the supply voltage is 1.5 kV determine the secondary line voltage on no-load when the windings are connected (a) delta-star (b) star-delta [(a) 649.5V (b) 216.5 V] 1 A 4-pole, wave-connected armature of a d.c. machine has ...
Common Causes Of Motor Overheating
... Continuous operation of pump. Typical HOMA pumps are designed for a 50% duty cycle. This means that the pump should operate for no more than 30 minutes per hour without special sizing considerations. The rest time permits full cooling for the motor, and assures the longest life and efficiency of the ...
... Continuous operation of pump. Typical HOMA pumps are designed for a 50% duty cycle. This means that the pump should operate for no more than 30 minutes per hour without special sizing considerations. The rest time permits full cooling for the motor, and assures the longest life and efficiency of the ...
Copy of FRS Electrical Presentation
... We were using new parts of the distributor because on our original one, part of the small pillars was broken, so it would not be as stable. Therefore, we used a new shaft, however we had to spend time shaving down the shaft in order to allow it to spin without sticking in the distributor. We also ha ...
... We were using new parts of the distributor because on our original one, part of the small pillars was broken, so it would not be as stable. Therefore, we used a new shaft, however we had to spend time shaving down the shaft in order to allow it to spin without sticking in the distributor. We also ha ...
Motor Drive Characterization for Short-Term High Power Density: Methods, Challenges, and Practical Aspects ,
... University of Illinois at Urbana-Champaign Power Affiliates Program Presentation May 09, 2014 This research is primarily supported by the Grainger Center for Electric Machinery and Electromechanics and Rolls-Royce. ...
... University of Illinois at Urbana-Champaign Power Affiliates Program Presentation May 09, 2014 This research is primarily supported by the Grainger Center for Electric Machinery and Electromechanics and Rolls-Royce. ...
IRIS POWER Volume 1, Issue 1 February 2006
... the presence of inverter voltage impulses. Qualification and Testing of Stator Insulation Systems for Inverter Duty Motors Probably the most important new technical specification concerning machine insulation systems to be developed in the past 20 years is IEC 60034 Part 18 - 41: Rotating Electrical ...
... the presence of inverter voltage impulses. Qualification and Testing of Stator Insulation Systems for Inverter Duty Motors Probably the most important new technical specification concerning machine insulation systems to be developed in the past 20 years is IEC 60034 Part 18 - 41: Rotating Electrical ...
Induction motor
An induction or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate-excitation or self-excitation for all or part of the energy transferred from stator to rotor, as in universal, DC and large synchronous motors. An induction motor's rotor can be either wound type or squirrel-cage type.Three-phase squirrel-cage induction motors are widely used in industrial drives because they are rugged, reliable and economical. Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Although traditionally used in fixed-speed service, induction motors are increasingly being used with variable-frequency drives (VFDs) in variable-speed service. VFDs offer especially important energy savings opportunities for existing and prospective induction motors in variable-torque centrifugal fan, pump and compressor load applications. Squirrel cage induction motors are very widely used in both fixed-speed and variable-frequency drive (VFD) applications. Variable voltage and variable frequency drives are also used in variable-speed service.