Methods for speed and torque control of induction motors, Electrical Engineering

Assignment Help:

Q. Methods for speed and torque control of induction motors?

The following are methods available for speed and torque control of induction motors.

• Pole-changing method

• Variable-frequency method

• Variable-line-voltage method

• Variable-rotor-resistance method

• Rotor-slip frequency control

• Rotor-slip energy recovery method

• Control by auxiliary devices (Kramer control, Scherbius control, Schrage motor)

• Solid-state control (variable-terminal-voltage control, variable-frequency control, rotor-resistance control forwound-rotormotors, injecting voltage into rotor circuit ofwound-rotor motors) usually discussed under power-semiconductor controlled drives.


Related Discussions:- Methods for speed and torque control of induction motors

Estimate conversion time of counter-controlled a/d converter, Q. An 8-bit A...

Q. An 8-bit A/D converter is driven by a 1-MHz clock. Estimate the maximum conversion time if: (a) It is a counter-controlled A/D converter. (b) It is a successive-approximat

Discuss one application of 8254 programmable interval timer, Discuss any on...

Discuss any one application of 8254 Programmable Interval Timer in detail. Mode1 causes the counter to treat as a retriggerable monostable multivibrator one shot. The G inpu

Merits and demerits of stepper motor - stepper motor , Merits and Demerits ...

Merits and Demerits of Stepper Motor Followings  are the  merits and demerits  of stepper motors. Merits : a.They are compatible  with digital systems b.For the co

Dual beam, explane the special features of dual beam?

explane the special features of dual beam?

List the various addressing modes present in 8086, List the various address...

List the various addressing modes present in 8086? There are 12 addressing modes are present in 8086. They are, (a) Register and immediate addressing modes _  Register ad

Combinational logic circuit , Design a combinational logic circuit to conve...

Design a combinational logic circuit to convert XS3BCD code in to the  standard 8421 BCD code.

Flex routing , Flex Routing : You can see that your labour will have bee...

Flex Routing : You can see that your labour will have been in vain unless you take steps to ensure that flexes are routed safely and well clear of possible sources of danger.

Igbt - insulated gate bipolar transistor , IGBT ( Insulated Gate Bipolar T...

IGBT ( Insulated Gate Bipolar Transistor ) IGBT  stands for  insulated gate bipolar transistor. It is having the advantages of both power MOSFET and BJT.  In IGBT  layer is P

Power flow analysis, Ask question #Minimum 10] In the system shown in Fig...

Ask question #Minimum 10] In the system shown in Figure 4-1, the rated voltage of the line is 110kv, and the conductors are all LGJ-120 type. The parameters are: r1=0.21O/km,x1=0

Economic analysis of hydropower, find the net value of power if an average ...

find the net value of power if an average value of energy is assumed to be $0.05/KWh, the capacity value is $30/kw-yr ...

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd