Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Permanent Magnet Stepper Motor
The stator of PMSM consists salient pole with concentrated winding the rotor of this type of stepper motor is generally taken as cylindrical pole type which is made of permanent magnets and hence this motor is called permanent magnet stepper motor.
Figure A -2 pole PMSM.
When phase A is excited with the stator produced poles attract the rotor permanent magnet poles so that their magnetic axes coincide N- pole attract the rotor aligns with the phase a pole on the left. The rotor turns through 900 when phase A is de energized and phase B is excited with current in. If the above currents made negative the direction of rotation will be opposite. The sequence of exciting the stator phase winding is A, B, A, B, A......for clockwise rotor movement.
PMSM has high detent torque higher torque per ampere of stator current higher inertia and lower torque to inertia ration, slower acceleration and response. The major disadvantage of PMSM is that they cannot be constructed with PM rotors with large number of poles and small steps are not possible.
Develop and execute a PSpice program to solve for the current I 2 in Figure.
1. A 230/1000V 50 Hz, single phase transformer has the following test data: Open circuit test (L.V.) Primary voltage = 230V Primary current = 1.30 A Input power
Q. The twin-tee or notch network shown in Figure is often used to obtain band-reject characteristics. (a) Determine the transfer function V 2 /I 1 . (b) Find the angular freq
We shall demonstrate load-line analysis to find the diode current and voltage, and then compute the total power output of the battery source in the circuit of Figure (a), given the
Q. Digital watches display time by turning on a certain combination of the seven-segment display device. (a) Show a typical seven-segment display. (b) Develop a truth table f
1- Use 4-to-16 decoder and some residue gates to recognize the following functions F1(A,B,C)= S(1,2,4,5,7) F2(A,B,C,D)= S(1,2,4,5,7,10,12,14,15) F3(A,B,C,D,E)= S(1,2,4,5,7,10,12,1
Define addressing modes of 8085. a) Immediate addressing b) Register addressing c) Direct addressing d) Indirect addressing e) Implicit addressing
Q. Illustrates typical thermal noise waveform? In general, any physical resistor or lossy device can be modeled by a noise source in series with a noiseless resistor, as shown
electrical project produse eneargy desingn
Q. Grade of Service In loss systems? Grade of Service : In loss systems, traffic carried by the network is normally lower than actual traffic offered to the network by subscri
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd