DC Motor Theory
... Since the armature is now a coil of wire, it will need DC current flowing through it to become magnetized. This presents another problem; since the armature will be rotating, the DC voltage wires cannot be connected directly to the armature coil. A stationary set of carbon brushes is used to make co ...
... Since the armature is now a coil of wire, it will need DC current flowing through it to become magnetized. This presents another problem; since the armature will be rotating, the DC voltage wires cannot be connected directly to the armature coil. A stationary set of carbon brushes is used to make co ...
Solar Xylophone
... meless, and beautiful. You can never predict the composition the chimes will play after the next gust of wind, which is what makes these inventions so compelling. The elegant overlay they add to our experiences brings us closer to nature. I wanted to create a different kind of autonomous musical ins ...
... meless, and beautiful. You can never predict the composition the chimes will play after the next gust of wind, which is what makes these inventions so compelling. The elegant overlay they add to our experiences brings us closer to nature. I wanted to create a different kind of autonomous musical ins ...
TB6551FAG Application Note
... Vrefout line is used for the reference power supply of the internal IC. Make sure to connect the capacitor whether the power supply of Vrefout is applied or not. Recommended values above are actual values for fan motors of air conditioner. So, when the board and the usage environment are different f ...
... Vrefout line is used for the reference power supply of the internal IC. Make sure to connect the capacitor whether the power supply of Vrefout is applied or not. Recommended values above are actual values for fan motors of air conditioner. So, when the board and the usage environment are different f ...
Twenty Ways to Optimize Electric Efficiency in the Use
... Therefore, in a 60-Hz system, the synchronous speed of a four--pole motor is 1800 rpm and that of a two-pole motor is 3600 rpm. At no-load the rotor will turn at a speed y equal to N. In order to produce torque, the rotor in an induction motor must rotate slower than the magnetic field. The differen ...
... Therefore, in a 60-Hz system, the synchronous speed of a four--pole motor is 1800 rpm and that of a two-pole motor is 3600 rpm. At no-load the rotor will turn at a speed y equal to N. In order to produce torque, the rotor in an induction motor must rotate slower than the magnetic field. The differen ...
HU3313501355
... S.Ravi kumar, V.Shravan kumar, B.K.Karunakar Rao Abstract The wind energy is free, inexhaustible and it produces no waste or greenhouse gases. Furthermore, it is a good method of supplying energy to remote areas. With growing application of wind energy conversion systems (WECSs), various technologie ...
... S.Ravi kumar, V.Shravan kumar, B.K.Karunakar Rao Abstract The wind energy is free, inexhaustible and it produces no waste or greenhouse gases. Furthermore, it is a good method of supplying energy to remote areas. With growing application of wind energy conversion systems (WECSs), various technologie ...
AN863
... fying the triac firing delay. Moving from Figure 2 to Figure 3, we can see two effects of the inductive term. First effect: at triac turn-on, the motor current does not exhibit a discontinuity, but changes gradually from 0 to a finite value. Second effect: at mains voltage zero crossing, the motor c ...
... fying the triac firing delay. Moving from Figure 2 to Figure 3, we can see two effects of the inductive term. First effect: at triac turn-on, the motor current does not exhibit a discontinuity, but changes gradually from 0 to a finite value. Second effect: at mains voltage zero crossing, the motor c ...
International Electrical Engineering Journal (IEEJ) Vol. 5 (2014) No.11, pp. 1632-1638
... high efficiency and manufacturing cost appears to be lower compared to other motor types. The switched reluctance motor (SRM) is simple, low cost, fault tolerant, and has simple converter and control requirements. The motor is suitable for many variable-speed and servo-type applications and is gaini ...
... high efficiency and manufacturing cost appears to be lower compared to other motor types. The switched reluctance motor (SRM) is simple, low cost, fault tolerant, and has simple converter and control requirements. The motor is suitable for many variable-speed and servo-type applications and is gaini ...
generator using instantaneous power control
... The Induction Generator using conventional squirrel cage induction machine has number of advantages such as ruggedness, brushless cage rotor construction, absence of a separate dc source, better transient performance and better inherent overfoad protection These advantages justify the use of IG for ...
... The Induction Generator using conventional squirrel cage induction machine has number of advantages such as ruggedness, brushless cage rotor construction, absence of a separate dc source, better transient performance and better inherent overfoad protection These advantages justify the use of IG for ...
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.