Suppose that the square wave pulses supplied to an MCM motor has a duty cycle of 41%, meaning that pulses are present 41 % and off for 100% - 41 %. If the amplitude of each pulse is 23 volts, what is the average voltage supplied to the motor?
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Suppose that the square wave pulses supplied to an MCM motor has a duty cycle of 41%, meaning that pulses are present 41 % and off for 100% - 41 %. If the amplitude of each pulse is 23 volts, what is the average voltage supplied to the motor?
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- Speed control of a 140 V, 1.68 kW DC motor single phase thyristor full wave AC-DC It is made by the converter. AA supply voltage 220 V (rms) Is 50. In the converter It is assumed that there is no loss. The armature resistance of the DC motor is = 0.417 Q. Very a large inductance is connected in series with the motor. The motor voltage constant is = 0.0964 V/rpm. The motor can be considered as a permanent magnet DC. According to this, a) Draw the driver (converter-motor) power circuit. b) Calculate the nominal current of the motor. c) Supply voltage, supply current, converter output voltage for ignition angle a = 30 ° and Draw the waveforms for the converter output current. d) = 950 rpm and for nominal current, d1) The firing angle of the converter, d2) Effective value of supply and thyristor current, d3) Supply power factor, calculate.The excitation circuit of a free-excited DC motor is a single-phase full- wave uncontrolled rectifier and The armature circuit is fed with a single-phase full-wave controlled rectifier. both rectifiers for AC voltage voltage 220 V(rms) ,is 50 Hz. Excitation O resistance of motor Rf = 100, armature force resistance Ra = 2 0 and motor voltage constant Kv = 0.25 V/(A - r/s). The motor is a fixed 10Nm buy under load a) Draw the driver (converter-motor) power circuit. To rotate with 1200 d/d of the motor, b) Calculate the thyristor assembly. c) When the engine is heavily loaded, with a suitable probability value for supply voltage, armature voltage, armature flow wavelengths draw below. d) Calculate the motor power (total input power). (Note: Va = IaRa + ea, Vf = IfRf, ea = Kv Ifw and Te = Kv Ifla)Please write Proper answer step by step else I will give dislike
- Problem 1 For each of the following mention, explain with waveforms, and draw diagram of 1. A circuit to drive a DC motor in two quadrants only FM and RB. 2. Speed control of IM by adding a resistance in the rotor. 3. A circuit to drive a DC motor in four quadrants. 4. The relation between the frequency and speed of IM.Write the expressions for the following descriptions.A 250V series motor draws a current of 40A. The armature resistance is 0.15 ohm and the field resistance is 0.05 ohm. Determine the maximum efficiency of the motor.
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