The closed-loop speed control of a direct current motor is shown in the block diagram below. Step the largest exceedance of his answer is about M = 4.3%, and the root for the settling time is t = 0.167 design a suitable PI controller using the locus technique. (Find the PI control parameters.) Reminder: If < =0.707 and W₁ = 34 are selected, it means that M = 4.3% and t = 0.167 sec. R(s) PI Controller Ge(s) 360 (s² +508 +541) Maximum overshoot = M =4.3% Settling time = t₁ = 0.167 Q(s) Reminder: Only answers showing the result will be considered invalid solutions. For the result the necessary solution steps should be shown in detail. This applies to all questions!

The closed-loop speed control of a direct current motor is shown in the block diagram below. Step the largest exceedance of his answer is about M = 4.3%, and the root for the settling time is t = 0.167 design a suitable PI controller using the locus technique. (Find the PI control parameters.) Reminder: If < =0.707 and W₁ = 34 are selected, it means that M = 4.3% and t = 0.167 sec. R(s) PI Controller Ge(s) 360 (s² +508 +541) Maximum overshoot = M =4.3% Settling time = t₁ = 0.167 Q(s) Reminder: Only answers showing the result will be considered invalid solutions. For the result the necessary solution steps should be shown in detail. This applies to all questions!

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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A synchronous machine is a three-phase, two-pole machine with 36 stator slots and 5/6 full-pitched balanced armature windings. Each phase winding is made up of eight identical coils connected in sequence. Balanced three-phase 66 Hz currents with a peak amplitude of 16 A are used to drive the stator phases. a) What is the basic stator space mmf's maximum amplitude? (A.turns) b) How fast does the fundamental stator space mmf rotate mechanically? (rpm) c) What is the third-harmonic stator space mmf's maximum amplitude? (A.turns) d) What is the fifth-harmonic stator space mmf's maximum amplitude? (A.turns) e) How fast does the fifth-harmonic stator space mmf rotate mechanically? (rpm)
3.An induction motor has a rotor resistance and reactance at standstill of 0.1 ohm and 3.5 ohm respectively. At standstill the voltage induced to the rotor is 60volts per phase. If the slip is 5%, determine the rotor current
Example -4. A three-phase. 60-Hz induction motor runs at 890 r/min at no load and at 840 r/min at full load. (a) How many poles does this motor have? (b) What is the slip at rated load? (c) What is the speed at one-quarter of the rated load? (d) What is the rotor's electrical frequency at one-quarter of the rated load?
DEGREE: BS Electrical Engineering COURSE/SUBJECT: AC Machines illustrate/draw the problem. Solving is optional, solved in previous post problem already PROBLEM: A 3-phase, 50 Hz, P=4 slip ring IM has a star connected rotor. The full load speed of the motor is 1460 rpm. The rotor resistance and standstill reactance per phase are 0.1 ohm and 1.5 ohm, respectively. The open circuit voltage on open circuit between the slip rings is 90 volts. Find: (A) Rotor current, and (B) Full load power factor.
A freewheeling DC motor is driven with 1000 rpm and a nominal load torque of 80Nm. The field circuit resistance is 200 and the armature circuit resistance is 0.2 O. The field coils are fed with a zero degree transmission angle through a single-phase fully controlled converter connected to a single-phase 240V source. The armature circuit is fed from a single phase 400V source through another fully controlled converter. Magnetic saturation has been neglected, the motor constant is given as 0.8 V - s / A - rad. Assuming that there is no fluctuation in armature and field current, find the control angle of the converter feeding the armature at nominal load. If you want to leave the question blank, click again on the option you marked.
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f The simplicity in construction of a single-stack VR step motor is due to.... 1. Low number of phases, 2. Low used voltage, 3. N, N, 4. Bidirectional rotation, 5- None of previous. g- The synchronous inductor motor has the ability to step when the phase windings are .............. 1. Connected in parallel, 2. Connected in series, 3. Connected in star, 4. Energized with dc, 5- None of previous. h- The speed of multiple-stack VR step motor with continuous stepping is 3.120, 4.5 5- None of previous. 60f T T Resonance conditions distort the torque/speed curve causing a Drop, 3. Ripple, 4. Fluctuation, 5- None of previous. ********** 1. 120f 2p 2. 60f 2p " in torque. 1. Increase, 2. j- The frequency of armature current in 1-phase series motor is 1. =f, 2. f, 4. Zero, 5- None of previous. (f is the supply frequency)
A three-phase, 60-Hz induction motor runs at 890 r/min at no load and at 840 r/min at full load. (a) How many poles does this motor have? (b) What is the slip at rated load? (c) What is the speed at one-quarter of the rated load? (d) What is the rotor’s electrical frequency at one-quarter of the rated load?
c) What is the physical meaning for each of the following induction motor parameters: R1 „R2 ,Rc ,X1 ,X2 ,Xm ?
Which one of the following statements is not correct about synchronous machine Select one: O a. The rotor dc current is required only for synchronous generator O b. The induced voltage in the stator depends on the rotor dc current O. The resistance of the stator windings can be neglected compared with the value of the synchronous reactance If the synchronous motor is overexcited, then: Select one: O a. The motor will absorb reactive power to the source. O b. The motor will operate at unity power factor. O c. The motor will deliver reactive power to the source. O d. The motor will deliver real power to the source.
The armature resistance of a shunt motor fed from a 220 Volt DC source is 5 ohms and the resistance of the excitation winding is R ohm and it rotates stably. Then, a resistance of R ohm is added to the excitation circuit (a resistor with the same value as the winding resistance) to control the speed. How many RPM is the motor in the last state in steady state.Mechanical losses will be neglected, motor magnetically linear, no saturation, temperature change will be neglected.Armature current = Ia = 4 ALoad torque=Tload= 7 Nm
The armature resistance of a shunt motor fed from a 220 Volt DC source is 5 ohms and the resistance of the excitation winding is R ohm and it rotates stably. Then, a resistance of R ohm is added to the excitation circuit (a resistor with the same value as the winding resistance) to control the speed. How many RPM is the motor in the last state in steady state.Mechanical losses will be neglected, motor magnetically linear, no saturation, temperature change will be neglected.Armature current = Ia = 3 ALoad torque=Tload= 8 Nma) 143 rpmb) 734 rpmc) 1361 rpm d) 77 rpm e) 1333 rpm