DP31778783
... speed controller is to take a signal representing the required speed and to drive a motor at that speed. In this paper PWM based speed control of DC motor through RS232 with PC goal of this as Role of electrical drives is a major concern in industrial automation. Industrial applications use dc motor ...
... speed controller is to take a signal representing the required speed and to drive a motor at that speed. In this paper PWM based speed control of DC motor through RS232 with PC goal of this as Role of electrical drives is a major concern in industrial automation. Industrial applications use dc motor ...
Design of a Small Personal Electric Vehicle as
... The dc motor can be relatively light, but its main advantage is the easy control compared to alternating current machines. Nevertheless the teaching staff has a preference for an induction motor (with cage rotor) since: • the induction motor is an extremely robust and durable machine that requires l ...
... The dc motor can be relatively light, but its main advantage is the easy control compared to alternating current machines. Nevertheless the teaching staff has a preference for an induction motor (with cage rotor) since: • the induction motor is an extremely robust and durable machine that requires l ...
Lecture 5
... Once the magnetic field established itself at one level, there would be no transfer of power from primary to secondary. This is a very important concept … a transformer will only induce a voltage from one set of windings to the other set during the time that the magnetic field is changing. Thus, a t ...
... Once the magnetic field established itself at one level, there would be no transfer of power from primary to secondary. This is a very important concept … a transformer will only induce a voltage from one set of windings to the other set during the time that the magnetic field is changing. Thus, a t ...
Electromagnetic Actuation Technologies
... – Piezo element must always be in compression • Low strains – mechanical gearing required • High voltage operation • Low energy density • Stored energy in field comparable to work done (Similarly issue with electromagnetics where inertia of armature/rotor is significant) • New high strain materials ...
... – Piezo element must always be in compression • Low strains – mechanical gearing required • High voltage operation • Low energy density • Stored energy in field comparable to work done (Similarly issue with electromagnetics where inertia of armature/rotor is significant) • New high strain materials ...
Improving the Starting Performance of Large Salient-Pole Synchronous Machines
... field-circuit formulation by using end-leakage reactances and the end winding resistances as external circuit parameters. The model of Fig. 6 has 29 574 elements and 15 279 nodes. The selection of mesh density is a tradeoff between the desired accuracy of the results and the computer CPU times. An a ...
... field-circuit formulation by using end-leakage reactances and the end winding resistances as external circuit parameters. The model of Fig. 6 has 29 574 elements and 15 279 nodes. The selection of mesh density is a tradeoff between the desired accuracy of the results and the computer CPU times. An a ...
DC Generator - UniMAP Portal
... The brush voltage drop represented by battery, Vbrush opposing the direction of current flow in the machine. ...
... The brush voltage drop represented by battery, Vbrush opposing the direction of current flow in the machine. ...
الشريحة 1
... systems - with the generated voltage , the output voltage from the tachometer is (0-7.5). but we are faced with two problem : the first problem is the output voltage from the tachometer is (0-7.5) volt and at this volt the pic will be damage so we transfer this voltage to 5 volt ,and we are make the ...
... systems - with the generated voltage , the output voltage from the tachometer is (0-7.5). but we are faced with two problem : the first problem is the output voltage from the tachometer is (0-7.5) volt and at this volt the pic will be damage so we transfer this voltage to 5 volt ,and we are make the ...
Magnetic field measurement
... Monitoring System. The method has proven good results since April 1991. The system showed that it may not give absolute measurement value, yet it provides very good relative value. In other words, it can’t tell the exact magnetic flux value in Wb unit but it can be used to compare all the poles in o ...
... Monitoring System. The method has proven good results since April 1991. The system showed that it may not give absolute measurement value, yet it provides very good relative value. In other words, it can’t tell the exact magnetic flux value in Wb unit but it can be used to compare all the poles in o ...
EL23829834
... Abstract- This paper proposes a single-phase to three-phase drive system composed of two parallel single-phase rectifiers, a three-phase inverter, and an induction motor. The proposed topology permits to reduce the rectifier switch currents, the harmonic distortion at the input converter side, and p ...
... Abstract- This paper proposes a single-phase to three-phase drive system composed of two parallel single-phase rectifiers, a three-phase inverter, and an induction motor. The proposed topology permits to reduce the rectifier switch currents, the harmonic distortion at the input converter side, and p ...
Starting Time Calculation for Induction Motor
... the heavy applications requirement. Some are considered large even in comparison to the total capacity of large industrial power systems. Starting of such large motors can cause adverse effects to any locally connected load, other motors and also to buses, which are electrically remote from the poin ...
... the heavy applications requirement. Some are considered large even in comparison to the total capacity of large industrial power systems. Starting of such large motors can cause adverse effects to any locally connected load, other motors and also to buses, which are electrically remote from the poin ...
QUALITROL-IRIS POWER IS THE WORLD’S LARGEST PROVIDER OF MONITORING AND
... Used in conjunction with the Iris Power TGA-STM portable test instrument or the Iris Power GuardIITM continuous monitoring platform, the Iris Power SSCs are permanently installed under the line end stator winding wedges (in existing machines), or between the top and bottom bars (in new or rewound ma ...
... Used in conjunction with the Iris Power TGA-STM portable test instrument or the Iris Power GuardIITM continuous monitoring platform, the Iris Power SSCs are permanently installed under the line end stator winding wedges (in existing machines), or between the top and bottom bars (in new or rewound ma ...
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.