Q2.Draw the equivalent circuit of separately excited DC machine, and show current and power paths for...

Q2.Draw the equivalent circuit of separately excited DC machine, and show current and power paths for generator operation.

Expert Solution

Manojponduru answered 2 years ago

-Draw Separately excited Dc Generator -Draw the graph for external Characteristic for a DC Generator. -Draw...

-Draw Separately excited Dc Generator -Draw the graph for external Characteristic for a DC Generator. -Draw the Shunt Generator. -Draw the Series Generator. -Draw the Compound Generator. -Draw the power flow Diagram for all of the circuit mentioned above. -Draw the Torque Speed of the Shurt Motors. -Explain the Back EMF? -Series Motor why the field is in series with the winding? -why should Dc Motor, should never be started at its rated voltage? -Explain the principle of a PM...

For a given Direct Current (DC) Machine: 3. Draw an equivalent circuit and list down all...

For a given Direct Current (DC) Machine: 3. Draw an equivalent circuit and list down all the losses that occur in DC motors. 4. Sketch a typical torque speed curve for a series motor. 5. Propose two methods to control the torque of a DC motor.

Q1: How to draw equivalent induction machine circuit? Q2: What is the rotor resistance including slip....

Q1: How to draw equivalent induction machine circuit? Q2: What is the rotor resistance including slip. Why is it R2/s and R2 (s)/(1-s) Q3: how to find power of the output given torque and speed? Q4: what are the formulas for Pin?

Problem 8 ( please answer neatly ) a) Draw the dc-motor equivalent circuit and its representation...

Problem 8 ( please answer neatly ) a) Draw the dc-motor equivalent circuit and its representation in Laplace domain. Is this representation linear? b) What is the transfer function of a proportional-integral (PI) controller? c) Draw the block diagram of the torque loop.

(1) Simulate dynamically a separately-excited DC motor with a block diagram modeling in SIMULINK. Use the...

(1) Simulate dynamically a separately-excited DC motor with a block diagram modeling in SIMULINK. Use the following parameters: Ra=0.06; La=0.0018; ka=0.1; Bm=0.001; Jm=0.03; Va=1; Tl=0.01; Vd=1; Rd=0.01; Ld=0.01; Show your block diagram with all connections among blocks as well as plot the input armature voltage, speed, torque and armature current. (2) Repeat what was asked in the first question with this machine series connected. (3) Repeat what was asked in the second question with this machine series connected and an...

A 230 V, 250 rpm, 100 A separately excited dc motor has an armature resistance of...

A 230 V, 250 rpm, 100 A separately excited dc motor has an armature resistance of 0.5 Ω. The motor is connected to 230 V dc supply and rated dc voltage is applied the field winding. It is driving a load whose torque-speed characteristic is given by TL = 500 − 10ω where ω is the speed in rad/sec and TL is the load torque in N-m. Find (a) the steady state speed at which the motor will drive the...

A 230 V, 500 rpm, 100 A separately- excited dc motor has an armature resistance of...

A 230 V, 500 rpm, 100 A separately- excited dc motor has an armature resistance of 0.1 ohms. The motor is driving, under rated conditions, a load whose torque is constant and independent of speed. The speeds below the rated speed are obtained with armature voltage control (with full field) and the speeds above the rated speed are obtained by field control (with rated armature voltage). What motor terminal voltage is needed to run it at 400 rpm? By what...

a) A 50kW separately excited DC motor has armature resistance of 2.5W, armature inductance of 30mH...

a) A 50kW separately excited DC motor has armature resistance of 2.5W, armature inductance of 30mH and back e.m.f of 100V when the motor is fed from a buck converter with 250VDC input, 50Hz switching frequency and 50% duty cycle. Assuming continuous conduction and lossless converter, find out the maximum, minimum and ripple currents in armature. b) Determine the values of inductor and filter capacitor for a buck converter with following specifications: Input= 48V, output = 24V, Load curernt =...

Q2.Find the equivalent circuit from no - load and short - circuit test of a 3...

Q2.Find the equivalent circuit from no - load and short - circuit test of a 3 - phase. 14.92 kW, 400 V, 6 - pole induction motor from the following test results (line values): No - load: 400 - V, 11 A, p.f. = 0.2 Short - circuit: 100 - V, 25 A, p.f. = 0.4 Rotor Cu loss at standstill is half the total Cu loss.

‏The speed of a 11 KW, 150 V, 1300 rev/min separately excited DC motor is controlled...

‏The speed of a 11 KW, 150 V, 1300 rev/min separately excited DC motor is controlled by a ‏single-phase fully-controlled thyristor converter. The rated motor current is 25 A, and the ‏armature resistance is Ra = 0.5 Ohm. The ac supply is 160 V. The motor voltage constant KE = ‏0.182 V/rev/min. Assume that sufficient inductance is present in the armature circuit to make ‏the armature current continuous and ripple free. ‏For a firing angle of alpha = 20 degree...

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