Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 30, Problem 1SQ
List some advantages of solid-state control.
Expert Solution & Answer
To determine
List some of the advantages of solid-state control.
Explanation of Solution
Solid-state control:
Solid-state or state control consists of no moving parts and provides a method to control the machines electrically by using logic elements and accessories.
Advantages of solid-state control:
- The operational speed of the controlling system is faster.
- The solid-state devices are sealed units. Hence, it will not be affected by outside environmental conditions.
- It is not consists of any moving parts. Therefore, there will not be any loss of energy due to friction.
- The lifetime of the solid-state control system is longer.
Conclusion:
Thus, the advantages of solid-state control are listed.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
control system theory question
Problem') A single-phase full-wave AC/AC voltage controller has input rms voltage Vs - 220 V,50 Hz, load R 100 2, and the firing angle a= 60° for the thyristors T1 and T2. Determine the output rms voltage VO and current IO, and the DPF.
5) Explain the working principle of stepper motor with
s3+ 5s2 + 12s + K = 0. Find the range of K for all the roots to lie to the
The characteristics equation for feedback control is,
neat diagram.
The characteristics equation for feedback control.
left of s = 1.
Chapter 30 Solutions
Electric Motor Control
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- 4.A 200 V, 20 A, 200 rpm, separately excited DC motor is having an armature resistance of 2 2. It is fed from a single phase fully controlled rectifier with source voltage V, 230 V rms, 50 Hz. Assume a continuous conduction mode for a firing angle of a= 85° at 900RPM If the load is passive, find the maximum load torque that the machine can drive the load.arrow_forwardExplain the fundamental differences between open-loop and closed-loop control systems. Provide examples of each and discuss the advantages and limitations of both approaches.arrow_forwardWhat would be the objective of creating a prototype to control the direction of a direct current motor with an H-bridge circuit? In the world of industrial electronics, in what situations is this used?arrow_forward
- The armature circuit of a free excited direct current motor with a nominal voltage of 600 V is fed from an adjusted direct voltage source. The excitation circuit is also powered from a regulated voltage source. It is used in an application that requires motor speed adjustment. The speed of the motor at the nominal armature voltage was measured as 1600 rpm. All losses of the motor and voltage source and the effect of armature reaction are neglected. It is accepted that the engine is not saturated.Answer the questions below.a) Draw the armature and excitation circuit of the motor and write the formulas for the equivalent circuit.b) If the load moment of the motor at the nominal armature voltage is 420 Nm, then calculate the armature current and the input power of the motor.c) If the armature voltage of the motor is kept constant at 600 V and the excitation current is decreased until the speed reaches 4000 rpm, then calculate the shaft moment. Show this working area on the M = f (W) axis.arrow_forwardIn a DC power supply unit, a. the transformer steps up the input voltage b. the rectifier converts DC to AC voltage C. the filter reduces the variations in the rectifier output d. the regulator gives a constant AC outputarrow_forwardd) A 200V, 875rpm, 150 Amp separately exited D.C. motor has an armature resistance of 0.0652. It is fed from a single phase fully controlled rectifier with an a.c. source of 220V, 50Hz. Assuming continuous conductors find i) Firing angle for rated torque and 750 rpm ii) Motor speed for a = 160° and rated torque.arrow_forward
- From the phasor diagram in the figure, deduce a expression for the output power, as a function of the armature current, Ia, and angle γ . Draw the curve Power (P) versus current angle (γ), for different levels of excitement Ef. For this consider negligible mechanical losses.arrow_forwardA DC chopper is used in regenerative braking mode of a dc series motor. The dc supply is 600 V, the duty cycle is 70%. The average value of armature current is 100 A. It is continuous and ripple free. What is the value of power feedback to the supply ?arrow_forwardA shunt motor running on no-load takes 5 A at 200 V. The resistance of the fieldcircuit is 150 ohms and of the armature 0.1 ohm. Determine the output andefficiency of motor when the input current is 120 A at 200 V.arrow_forward
- What is difference between Open-loop and Close-loop control system? give note on botharrow_forwardDISCUSSION: 1. What do you mean by rise time? Derive its expression for a unity feedback 2nd order control system. 2. Why is less overshoot desired for practical systems?arrow_forward1. Single phase full converter is used to control the speed of separately excited DC motors. AC supply voltage is 208 V. Motor armature and field resistance are 0.5 2 and 345 2 respectively. The field current is also controlled by a full converter and the field current is set as the maximum possible value. Motor voltage constant is 0.7 V/A-rad/sec. If firing angle is 45° and armature current is 55 A, determine the angular speed of the motor. Assume armature and field current are ripple free.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Maximum Power Transfer Theorem Using Nodal Analysis & Thevenin Equivalent Circuits; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=8CA6ZNXgI-Y;License: Standard Youtube License