Static rotor resistance control methods - motor control , Electrical Engineering

Static Rotor Resistance Control Methods

This method is used only for slip  ring induction motor in SRIM  3- phase  variable  resistor can be inserted in the rotor  circuit and by  varying this resistance in the rotor  circuit and by  varying this resistance  the motor  torque and hence speed  of th motor  can be  controlled. This methods  is  used when speed drop  is required for a short  time.

It has some  disadvantages if rotor  resistances are  not equal unbalances in voltages and  currents  occur at low  speeds efficiency is reduced and with  load variation speed  is changed very  quickly therefore  chopper circuit  is used.

Posted Date: 4/3/2013 2:47:43 AM | Location : United States







Related Discussions:- Static rotor resistance control methods - motor control , Assignment Help, Ask Question on Static rotor resistance control methods - motor control , Get Answer, Expert's Help, Static rotor resistance control methods - motor control Discussions

Write discussion on Static rotor resistance control methods - motor control
Your posts are moderated
Related Questions
Bonding Forces and Energy Bands in Solids Electrons are controlled to sets of discrete energy levels in atoms, with large gaps among them in which no energy state is obta

For an operating point half way up the parallel section and the discharge valve and the discharge fully open, design a proportional only controller which will give closed loop dyna

A heater element is made of nichrome wire having resistivity equal to 100 × 10 -8 ohm-m. The diameter of the wire is 0.4mm. Calculate the length of the wire required to get a resi

Strategy and Customer Relationship Management CRM sometimes considers as only information technology because of availability of quite a good number of software packages in the

Q. A commercial FMstation broadcasts a signal with 180-kHz bandwidth when |f(t)|max = 2 V. Find kFM for the modulator if the spectral extent of f (t) is 30 kHz, by using Carson's r

Define the term assembler directives. An assembler directive is a statement to provide direction to the assembler to perform the function of assembly process. The assembler di

Partial derivatives - Transistor hybrid model: The partial derivatives are taken by keeping the collector voltage or base current constant as pointed out by the subscript atta

V-I Characteristics  In the  normal  mode of  operation of an IGBT  a positive  voltage is applied to the collector relative to emitter. When  the gate is at zero potential wi

Explain the Cylindrical or Round Rotors? All synchronous machines have a similar stator design and it is actually the rotor construction that makes them different. The rotor is

Prepaid Metering Prepaid metering is the state of art for single and three-phase although current metering, and should be implemented through utilities desirous of protecting