analysis of a dual buck converter fed four-quadrant dc drive
... K.S.R.M.C.E, kadapa, email: [email protected] Abstract: The four-quadrant DC drive operation is well established, however, the increased use of the existing at same time to improved power quality AC-DC converters (IPQC’s). In this paper the performance of the separately excited dc machin ...
... K.S.R.M.C.E, kadapa, email: [email protected] Abstract: The four-quadrant DC drive operation is well established, however, the increased use of the existing at same time to improved power quality AC-DC converters (IPQC’s). In this paper the performance of the separately excited dc machin ...
Comparative Study of Linear Oscillating Generators
... by framework limitations and restrictions of driving speed. On the other hand, linear machines have fewer limits than rotating machines in driving speed. Also, linear machines are direct drives which need no gears to generate linear thrust force. In this reason, its application field shows increasin ...
... by framework limitations and restrictions of driving speed. On the other hand, linear machines have fewer limits than rotating machines in driving speed. Also, linear machines are direct drives which need no gears to generate linear thrust force. In this reason, its application field shows increasin ...
TECHNOLOGIEWACHT:
... a core and two coils. The first coil is situated in the first phase and the second coil is situated in the second phase. The differential mode current is flowing through the first coil and returning through the second coil. This causes two fluxes in the core material. These fluxes have the same magn ...
... a core and two coils. The first coil is situated in the first phase and the second coil is situated in the second phase. The differential mode current is flowing through the first coil and returning through the second coil. This causes two fluxes in the core material. These fluxes have the same magn ...
estimation of parameters of multi-port equivalent scheme for
... weight. Generally such transformers have also other low voltage windings used for supplying different auxiliary devices within the train, such as lights, heaters or air conditioners for example. Moreover, especially in Europe where the railways supply networks operate at different voltages and frequ ...
... weight. Generally such transformers have also other low voltage windings used for supplying different auxiliary devices within the train, such as lights, heaters or air conditioners for example. Moreover, especially in Europe where the railways supply networks operate at different voltages and frequ ...
to 430 Motors Quiz
... for a normal amp starting motor, (5 hp – 230 volt - 1 PH) with nameplate FLA of 20 A and SF 1 is ______. 20 A 25 A 30 A 35 A 40 A ...
... for a normal amp starting motor, (5 hp – 230 volt - 1 PH) with nameplate FLA of 20 A and SF 1 is ______. 20 A 25 A 30 A 35 A 40 A ...
Ned Mohan
... possibility of getting the prototype "right the first time" [9]. Simulation can be used to optimize the performance objective by letting the simulation search over a large number of variables. 4. New circuit concepts and parameter variations (including tolerances on components) are easily tested. Ch ...
... possibility of getting the prototype "right the first time" [9]. Simulation can be used to optimize the performance objective by letting the simulation search over a large number of variables. 4. New circuit concepts and parameter variations (including tolerances on components) are easily tested. Ch ...
Fundamental Relay-Operating Principles
... In order to protect the contacts against damage resulting from a possible inadvertent attempt to interrupt the flow of the circuit tripcoil current, some relays are provided with a holding mechanism comprising a small coil in series with the contacts; this coil is on a small electromagnet that acts ...
... In order to protect the contacts against damage resulting from a possible inadvertent attempt to interrupt the flow of the circuit tripcoil current, some relays are provided with a holding mechanism comprising a small coil in series with the contacts; this coil is on a small electromagnet that acts ...
Maximum reachable torque, power and speed for five-phase
... Finite Element Analysis and the inverter with time differential equations to account the commutations. Such an approach is hard to implement and computionally time-consuming. Another possibility consists in using the equivalent multi dqcircuit model for the multi-phase SPM machine [17] and an averag ...
... Finite Element Analysis and the inverter with time differential equations to account the commutations. Such an approach is hard to implement and computionally time-consuming. Another possibility consists in using the equivalent multi dqcircuit model for the multi-phase SPM machine [17] and an averag ...
Current-Fed Inverters Voltage
... potential for resonance between the capacitors and the motor inductance. Care must be taken to avoid impressing current harmonics into the motor/capacitor network which will excite one of the system resonance frequencies. This can be avoided by careful use of PWM. However, since the motor parameters ...
... potential for resonance between the capacitors and the motor inductance. Care must be taken to avoid impressing current harmonics into the motor/capacitor network which will excite one of the system resonance frequencies. This can be avoided by careful use of PWM. However, since the motor parameters ...
AH5798 SINGLE PHASE HALL EFFECT LATCH SMART FAN MOTOR CONTROLLER
... Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use ...
... Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use ...
D.C Machines
... Design of shunt field winding • Lmt – estimated from dimensions of pole • Depth – assumed (depends on diameter of armature) • Height – estimated in order to provide required surface area Heat can be dissipated from all the four sides of a coil. i.e, inner , outer, top and bottom surface of the coil ...
... Design of shunt field winding • Lmt – estimated from dimensions of pole • Depth – assumed (depends on diameter of armature) • Height – estimated in order to provide required surface area Heat can be dissipated from all the four sides of a coil. i.e, inner , outer, top and bottom surface of the coil ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Practicing engineers; who often do FR measurements, very well know the effect of stored magnetism in the core in the low-frequency region. The switching-off instant for a transformer cannot be easily controlled and hence the amount of stored magnetism in the core may have different values at differe ...
... Practicing engineers; who often do FR measurements, very well know the effect of stored magnetism in the core in the low-frequency region. The switching-off instant for a transformer cannot be easily controlled and hence the amount of stored magnetism in the core may have different values at differe ...
Objective – 2 - cloudfront.net
... main and auxiliary windings by connecting (A) A capacitor across the mains (B) A capacitor in series with the machine (C) A capacitor in series with the auxiliary winding (D) The main and the auxiliary winding in series (C) Auxilary winding is required in single phase induction motor at the time of ...
... main and auxiliary windings by connecting (A) A capacitor across the mains (B) A capacitor in series with the machine (C) A capacitor in series with the auxiliary winding (D) The main and the auxiliary winding in series (C) Auxilary winding is required in single phase induction motor at the time of ...
CO21579585
... currents. The application of a zig-zag transformer for the reduction of neutral current is advantageous due to passive compensation, Rugged, and less complex over the active compensation techniques. A zig-zag transformer is a special connection of three single-phase transformer windings or three-pha ...
... currents. The application of a zig-zag transformer for the reduction of neutral current is advantageous due to passive compensation, Rugged, and less complex over the active compensation techniques. A zig-zag transformer is a special connection of three single-phase transformer windings or three-pha ...
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.