Industrial Motor Control
7th Edition
ISBN: 9781133691808
Author: Stephen Herman
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 46, Problem 6RQ
What is the main disadvantage of using SCRs in a variable frequency drive?
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Define the term torque diagram?
The figure below shows an electromechanics system that is consist of a DC motor controlled by a
servo amplifier, and lead screw via a worm gear. The lead screw extends and contracts to drive a
mass.
DC Motor
Worm Gear and
Lead Screw
Motor
Servoamplifier
If one node is observed at a frequency of 1000 RPM, during a whiring of a simply supported long slender rotating shaft. The first critical speed of the shaft in RPM is ______?
Chapter 46 Solutions
Industrial Motor Control
Ch. 46 - Prob. 1RQCh. 46 - Prob. 2RQCh. 46 - If an alternator is used to provide variable...Ch. 46 - What solid-state device is generally used to...Ch. 46 - Why are SCRs used to construct a bridge rectifier...Ch. 46 - What is the main disadvantage of using SCRs in a...Ch. 46 - How are junction transistors driven into...Ch. 46 - What is the disadvantage of driving a junction...Ch. 46 - Prob. 9RQCh. 46 - In variable frequency drives that employ IGBTs,...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Which family of devices does the triac belong to?arrow_forwardWhat solid-state device is generally used to produce variable frequency in drives designed to control motors up to 500 HP?arrow_forwardThe BAPCO in Bahrain is looking to design a V belt drive system for its recently installed rotary machines. The smaller pulley having a diameter of * d" is connected to an electric motor and run at a speed of nd. The belt is used to drive a larger pulley at a speed of 90 rpm. The V belt is used to transmits a power of 95 hp and ignore it in belt class selection process (Table 17.9). The service factor for the V belt drive system is 1.3 and the suggested factor of safety for the current design is 2.5. Smaller Pulley Diameter = d = 9 in Speed of smaller pulley = nd = 900 rpm Design and select a V belt drive system.arrow_forward
- 2) In an DC machine, ______________________________ provides the mechanical support to the whole machine. Select one : Yoke Brushes Pole shoe Interpolesarrow_forwardWhat industry first started using programmable logic controllers?arrow_forwardWhat are the effects of improper brush tension in a DC machine?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Understanding Motor ControlsMechanical EngineeringISBN:9781337798686Author:Stephen L. HermanPublisher:Delmar Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Electrical Transformers and Rotating MachinesMechanical EngineeringISBN:9781305494817Author:Stephen L. HermanPublisher:Cengage Learning
Understanding Motor Controls
Mechanical Engineering
ISBN:9781337798686
Author:Stephen L. Herman
Publisher:Delmar Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning
Electrical Transformers and Rotating Machines
Mechanical Engineering
ISBN:9781305494817
Author:Stephen L. Herman
Publisher:Cengage Learning
Power Transmission; Author: Terry Brown Mechanical Engineering;https://www.youtube.com/watch?v=YVm4LNVp1vA;License: Standard Youtube License