Basic Electrical Engineering Laboratory
... 6. Planck’s constant determination set-up with LED’s of different wavelengths. 7. Planck’s constant determination set-up using solar cell, on an optical bench AR coated filters in filter wheel. 8. Hall Effect experimental set-up: Complete in all respect with electromagnet, digital power supply, and ...
... 6. Planck’s constant determination set-up with LED’s of different wavelengths. 7. Planck’s constant determination set-up using solar cell, on an optical bench AR coated filters in filter wheel. 8. Hall Effect experimental set-up: Complete in all respect with electromagnet, digital power supply, and ...
Self-excited induction generator research—a survey
... sources are available in plenty, their utilization was felt quite promising to accomplish the future energy requirements. Harnessing mini-hydro and wind energy for electric power generation is an area of research interest and at present, the emphasis is being given to the cost-effective utilization ...
... sources are available in plenty, their utilization was felt quite promising to accomplish the future energy requirements. Harnessing mini-hydro and wind energy for electric power generation is an area of research interest and at present, the emphasis is being given to the cost-effective utilization ...
v. effect of different kinds of inter-turn winding faults on magnetic flux
... scarcely found in electrical machines and hence, the application of this method is also limited. On the other hand, it has now become vital to diagnose faults at their very inception; as unscheduled machine downtime can cause heavy financial losses [11], [12]. Condition monitoring of synchronous gen ...
... scarcely found in electrical machines and hence, the application of this method is also limited. On the other hand, it has now become vital to diagnose faults at their very inception; as unscheduled machine downtime can cause heavy financial losses [11], [12]. Condition monitoring of synchronous gen ...
stepper motor drive considerations, common
... with the advent of cost effective integrated drivers, bipolar motors are now more common. These bipolar motors typically produce a higher torque in a given form factor [1]. Drive Topology Selection Depending on the torque and speed required from a stepper motor there are several motor drive topologi ...
... with the advent of cost effective integrated drivers, bipolar motors are now more common. These bipolar motors typically produce a higher torque in a given form factor [1]. Drive Topology Selection Depending on the torque and speed required from a stepper motor there are several motor drive topologi ...
Electrical 4th Sem
... Nature of magnetizing current, plotting of magnetizing current from B-H curve, Inrush current, harmonics, effect of construction on input current, connection of three phase transformer. Phase-Conversion: Three to two phase, three to six phase and three to twelve phase conversions. Introduction to th ...
... Nature of magnetizing current, plotting of magnetizing current from B-H curve, Inrush current, harmonics, effect of construction on input current, connection of three phase transformer. Phase-Conversion: Three to two phase, three to six phase and three to twelve phase conversions. Introduction to th ...
ABB drives - Technical guide No. 5 - Bearing currents in modern AC
... over the bearing. In the case of high frequency bearing currents, this voltage can be generated in three different ways. The most important factors that define which mechanism is prominent, are the size of the motor and how the motor frame and shaft are grounded. The electrical installation, meaning ...
... over the bearing. In the case of high frequency bearing currents, this voltage can be generated in three different ways. The most important factors that define which mechanism is prominent, are the size of the motor and how the motor frame and shaft are grounded. The electrical installation, meaning ...
Softstarter Handbook
... In this book the focus has been placed on the squirrel cage motor, the most common type of motor on the market. It is relatively cheap and the maintenance cost is normally low. There are many different manufacturers represented on the market, selling at various prices. Not all motors have the same p ...
... In this book the focus has been placed on the squirrel cage motor, the most common type of motor on the market. It is relatively cheap and the maintenance cost is normally low. There are many different manufacturers represented on the market, selling at various prices. Not all motors have the same p ...
AL4201250256
... parameters, real and reactive powers are calculated. These power system is controlled independently by using transfer functions to derive direct and quadrature axis voltages. These direct axis voltage can control real power and quadrature axis will control the reactive power flow from STATCOM. The t ...
... parameters, real and reactive powers are calculated. These power system is controlled independently by using transfer functions to derive direct and quadrature axis voltages. These direct axis voltage can control real power and quadrature axis will control the reactive power flow from STATCOM. The t ...
excerpt
... From the above data, it can be seen that 44% of motor failure problems are related to HEAT. Allowing a motor to reach and operate at a temperature 10°C above its maximum temperature rating will reduce the motor’s expected life by 50%. Operating at 10°C above this, the motor’s life will be reduced ag ...
... From the above data, it can be seen that 44% of motor failure problems are related to HEAT. Allowing a motor to reach and operate at a temperature 10°C above its maximum temperature rating will reduce the motor’s expected life by 50%. Operating at 10°C above this, the motor’s life will be reduced ag ...
QUALITROL-IRIS POWER IS THE WORLD’S LARGEST PROVIDER OF MONITORING AND
... • Remote inputs with up to 8 analog points proportional to operating conditions such as stator winding temperature, voltage, current, or power. These conditions are recorded for trending and analysis. ...
... • Remote inputs with up to 8 analog points proportional to operating conditions such as stator winding temperature, voltage, current, or power. These conditions are recorded for trending and analysis. ...
Aalborg Universitet
... input current waveform and are used for thhe boost operation mode. A two level power converter is conneected to the control system which generates the gate signals for the converter. DC link capacitor is used to stabilize the DC linkk voltage. Voltage and current measurements are taken at thhe grid ...
... input current waveform and are used for thhe boost operation mode. A two level power converter is conneected to the control system which generates the gate signals for the converter. DC link capacitor is used to stabilize the DC linkk voltage. Voltage and current measurements are taken at thhe grid ...
Blue Thunder™ Pump Series Specs
... 1. When connecting plumbing fittings to the pumps threaded ports, it is recommended that thread seal tape (Teflon tape) be used. If the suction (intake) connection is not sealed correctly the pump will not prime properly and will pump only small volumes of water or no water at all. 3. Suction and di ...
... 1. When connecting plumbing fittings to the pumps threaded ports, it is recommended that thread seal tape (Teflon tape) be used. If the suction (intake) connection is not sealed correctly the pump will not prime properly and will pump only small volumes of water or no water at all. 3. Suction and di ...
Modulating Functions of Space Vector PWM for Three-Leg VSI
... • Fig. 6 illustrates experimental modulating function waveforms for and fundamental frequency of 50 Hz. It is evident that the measured reference voltage waveforms are identical with the calculated ones as shown in Fig. 5(b) . ...
... • Fig. 6 illustrates experimental modulating function waveforms for and fundamental frequency of 50 Hz. It is evident that the measured reference voltage waveforms are identical with the calculated ones as shown in Fig. 5(b) . ...
multi-level-parking - Mechanical Engineering Projects
... contamination with concentrated spots of pollutants such as motor oil. Also, they often cover large contiguous areas with impermeable paving surface. This means that virtually all of the rain (minus evaporation) that falls becomes runoff. The parking lot must be built to effectively channel and coll ...
... contamination with concentrated spots of pollutants such as motor oil. Also, they often cover large contiguous areas with impermeable paving surface. This means that virtually all of the rain (minus evaporation) that falls becomes runoff. The parking lot must be built to effectively channel and coll ...
Doubly-Fed Induction Machine Models for Stability Assessment of
... In the simulation of the fifth order model, not only stator transients of the induction machine but also the transient behaviour of transformers and lines was considered (EMT-compatible network model). Together with the third order machine model, a quasi-steady-state network model was used, correspo ...
... In the simulation of the fifth order model, not only stator transients of the induction machine but also the transient behaviour of transformers and lines was considered (EMT-compatible network model). Together with the third order machine model, a quasi-steady-state network model was used, correspo ...
Motor Mounted Components - Altra Literature Portal
... For versions with braking torque marked with *, which may only be used with an MSG rectifier, the values of tA and tDC apply to operation with an MSG rectifier; i.e. tA for overexcitation or tDC for electronic circuit interruption on the DC side. ...
... For versions with braking torque marked with *, which may only be used with an MSG rectifier, the values of tA and tDC apply to operation with an MSG rectifier; i.e. tA for overexcitation or tDC for electronic circuit interruption on the DC side. ...
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.