Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
Motor type Power rating (mechanical), Pc Rated line voltage, VL Induction, 3-phase 110 kW 400 V Frequency, fN 50 Hz Poles, NP 4 Rated speed, WR Rated current, IR Starting current ratio, Is/IR Nominal torque, гN 1491 rpm 194 A 7.9 Locked torque ratio, ПL/бN Efficiency at 100% load, ПMAX Power factor, PF 705 N.m 2.4 96.3% 0.85 A high-voltage dc (HVDC) converter station is designed to achieve very high power efficiency (about 99%) and, yet, the power losses still amount to a lot of heat being dispersed outside the valve hall. Consequently, the cooling system represents a critical component of an HVDC converter station, consisting of a network of pipes (where liquid coolant flows), outdoor fan-coolers (to disperse the heat to the ambient air), and an electric motor-compressor. Moving the coolant through this network of pipes represents a significant load, especially at start up. An industrial-grade induction motor has been chosen for this task and has the characteristics shown in Table A1. (i) When the HVDC converter station converts 1 GW, calculate the amount of power losses it generates and comment on the scale of the cooling system. (ii) Calculate (per phase and magnitude only) the start-up and full- load (i.e. at rated current) impedances for this induction motor. (iii) Calculate how much reactive power compensation is needed to correct the power factor back to 0.95 lagging. (iv) Suggest a few design options for managing the starting up of the cooling system. Make sure to provide a short argument to support your engineering solutions.

Motor type Power rating (mechanical), Pc Rated line voltage, VL Induction, 3-phase 110 kW 400 V Frequency, fN 50 Hz Poles, NP 4 Rated speed, WR Rated current, IR Starting current ratio, Is/IR Nominal torque, гN 1491 rpm 194 A 7.9 Locked torque ratio, ПL/бN Efficiency at 100% load, ПMAX Power factor, PF 705 N.m 2.4 96.3% 0.85 A high-voltage dc (HVDC) converter station is designed to achieve very high power efficiency (about 99%) and, yet, the power losses still amount to a lot of heat being dispersed outside the valve hall. Consequently, the cooling system represents a critical component of an HVDC converter station, consisting of a network of pipes (where liquid coolant flows), outdoor fan-coolers (to disperse the heat to the ambient air), and an electric motor-compressor. Moving the coolant through this network of pipes represents a significant load, especially at start up. An industrial-grade induction motor has been chosen for this task and has the characteristics shown in Table A1. (i) When the HVDC converter station converts 1 GW, calculate the amount of power losses it generates and comment on the scale of the cooling system. (ii) Calculate (per phase and magnitude only) the start-up and full- load (i.e. at rated current) impedances for this induction motor. (iii) Calculate how much reactive power compensation is needed to correct the power factor back to 0.95 lagging. (iv) Suggest a few design options for managing the starting up of the cooling system. Make sure to provide a short argument to support your engineering solutions.

Introductory Circuit Analysis (13th Edition)
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...
See similar textbooks
icon
Related questions
Question
Motor type Power rating (mechanical), Pc Rated line voltage, VL Induction, 3-phase 110 kW 400 V Frequency, fN 50 Hz Poles, NP 4 Rated speed, WR Rated current, IR Starting current ratio, Is/IR Nominal torque, гN 1491 rpm 194 A 7.9 Locked torque ratio, ПL/бN Efficiency at 100% load, ПMAX Power factor, PF 705 N.m 2.4 96.3% 0.85
Transcribed Image Text:Motor type Power rating (mechanical), Pc Rated line voltage, VL Induction, 3-phase 110 kW 400 V Frequency, fN 50 Hz Poles, NP 4 Rated speed, WR Rated current, IR Starting current ratio, Is/IR Nominal torque, гN 1491 rpm 194 A 7.9 Locked torque ratio, ПL/бN Efficiency at 100% load, ПMAX Power factor, PF 705 N.m 2.4 96.3% 0.85
A high-voltage dc (HVDC) converter station is designed to achieve very high power efficiency (about 99%) and, yet, the power losses still amount to a lot of heat being dispersed outside the valve hall. Consequently, the cooling system represents a critical component of an HVDC converter station, consisting of a network of pipes (where liquid coolant flows), outdoor fan-coolers (to disperse the heat to the ambient air), and an electric motor-compressor. Moving the coolant through this network of pipes represents a significant load, especially at start up. An industrial-grade induction motor has been chosen for this task and has the characteristics shown in Table A1. (i) When the HVDC converter station converts 1 GW, calculate the amount of power losses it generates and comment on the scale of the cooling system. (ii) Calculate (per phase and magnitude only) the start-up and full- load (i.e. at rated current) impedances for this induction motor. (iii) Calculate how much reactive power compensation is needed to correct the power factor back to 0.95 lagging. (iv) Suggest a few design options for managing the starting up of the cooling system. Make sure to provide a short argument to support your engineering solutions.
Transcribed Image Text:A high-voltage dc (HVDC) converter station is designed to achieve very high power efficiency (about 99%) and, yet, the power losses still amount to a lot of heat being dispersed outside the valve hall. Consequently, the cooling system represents a critical component of an HVDC converter station, consisting of a network of pipes (where liquid coolant flows), outdoor fan-coolers (to disperse the heat to the ambient air), and an electric motor-compressor. Moving the coolant through this network of pipes represents a significant load, especially at start up. An industrial-grade induction motor has been chosen for this task and has the characteristics shown in Table A1. (i) When the HVDC converter station converts 1 GW, calculate the amount of power losses it generates and comment on the scale of the cooling system. (ii) Calculate (per phase and magnitude only) the start-up and full- load (i.e. at rated current) impedances for this induction motor. (iii) Calculate how much reactive power compensation is needed to correct the power factor back to 0.95 lagging. (iv) Suggest a few design options for managing the starting up of the cooling system. Make sure to provide a short argument to support your engineering solutions.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 3 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS