Shipboard Electrical Power Systems

Shipboard Electrical Power Systems

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Features

  • Compiles, in a single resource, important information on all relevant topics required for power engineers
  • Presents in-depth coverage of batteries, which are essential in all practical power systems but not usually sufficiently covered in traditional books
  • Explains difficult electrical concepts using mechanical and hydraulic analogies that are easily relatable for marine engineers
  • Offers a cursory introduction to marine industry standards
  • Uses long, visible suffixes in equations, which are easier to understand and remember than the one-letter symbols used in most books
  • Includes numerous examples, practice problems, and concept questions
  • Suggests further reading at the end of each chapter

Summary

Shipboard Electrical Power Systems addresses new developments in this growing field. Focused on the trend toward electrification to power commercial shipping, naval, and passenger vessels, this book helps new or experienced engineers master cutting-edge methods for power system design, control, protection, and economic use of power.

Provides Basic Transferable Skills for Managing Electrical Power on Ships or on Land

This groundbreaking book is the first volume of its kind to illustrate optimization of all aspects of shipboard electrical power systems. Applying author Mukund Patel’s rare combination of industrial and educational work experiences and insight, it offers solutions to meet the increasing demand for large, fast, efficient, and reconfigurable ships to compete in international markets.

For 30 years, Professor Patel was an engineer for companies including General Electric, Lockheed Martin, and Westinghouse Electric, and in the past 15 years he has been an engineering professor at the U.S. Merchant Marine Academy. That varied experience helped him zero in on the specialized multidimensional knowledge an engineer requires—and that is what sets his book apart.

Compiles Critical, Hard-to-Find Information on Power System Design, Analysis, and Operation

The global shortage of power engineers is not deterring countries from heavily investing in construction of new power plants and grids. Consequent growth in university electrical power programs is satisfying the demand for engineers, but novice graduates require accelerated understanding and practical experience before entering the thriving maritime segment.

Ideal for readers with limited electrical experience, wide-ranging coverage includes power system basics, power generation, electrical machines, power distribution, batteries, and marine industry standards. This book is an invaluable tool for engineers working on ships, as well as in ports, industrial power plants, refineries, and other similar environments.

Table of Contents

AC Power Fundamentals

Current Voltage Power and Energy

Alternating Current

AC Phasor

Phasor Algebra Review

Single-Phase AC Power Circuit

AC Power in Complex Form

Reactive Power

Three-Phase AC Power System


Shipboard Power System Architectures

Types of Ship Drives

Electrical Design Tasks

Electrical Load Analysis

Power System Configurations

Cold Ironing/Shore Power

Efficiency and Reliability of Chain

Shipboard Circuit Designation

Ship Simulator

Systems of Units


Common Aspects of Power Equipment

Faraday’s Law and Coil Voltage Equation

Mechanical Force and Torque

Electrical Equivalent of Newton’s Third Law

Power Losses in Electrical Machine

Maximum Efficiency Operating Point

Thevenin Equivalent Source Model

Voltage Drop and Regulation

Load Sharing among Sources

Power Rating of Equipment

Temperature Effect on Resistance


AC Generator

Terminal Performance

Electrical Model

Electrical Power Output

Transient Stability Limit

Equal Area Criteria of Transient Stability

Speed and Frequency Regulations

Load Sharing among AC Generators

Isosynchronous Generator

Excitation Methods

Short Circuit Ratio

Automatic Voltage Regulator


AC and DC Motors

Induction Motor

Synchronous Motor

Motor HP and Line Current

Dual-Use Motors

Unbalanced Voltage Effect

DC Motor

Universal (Series) Motor AC or DC

Special Motors for Ship Propulsion

Torque versus Speed Comparison


Transformer

Transformer Categories

Types of Transformers

Selection of kVA Rating

Transformer Cooling Classes

Three-Phase Transformer Connections

Full-Δ and Open-Δ Connections

Magnetizing Inrush Current

Single-Line Diagram Model

Three-Winding Transformer

Percent and Per Unit Systems

Equivalent Impedance at Different Voltage

Continuous Equivalent Circuit through Transformer

Influence of Transformer Impedance


Power Cable

Conductor Gage

Cable Insulation

Conductor Ampacity

Cable Electrical Model

Skin and Proximity Effects

Cable Design

Marine and Special Cables

Cable Routing and Installation


Power Distribution

Typical Distribution Scheme

Grounded and Ungrounded Systems

Ground Fault Detection Schemes

Distribution Feeder Voltage Drop

Bus Bars Electrical Parameters

High-Frequency Distribution

Switchboard and Switchgear


Fault Current Analysis

Types and Frequency of Faults

Fault Analysis Model

Asymmetrical Fault Transient

Fault Current Offset Factor

Fault Current Magnitude

Motor Contribution to Fault Current

Current Limiting Series Reactor

Unsymmetrical Faults

Circuit Breaker Selection Simplified


System Protection

Fuse

Overload Protection

Electromechanical Relay

Circuit Breaker

Differential Protection of Generator

Differential Protection of Bus and Feeders

Ground Fault Current Interrupter

Transformer Protection

Motor Branch Circuit Protection

Lightning and Switching Voltage Protection

Surge Protection for Small Sensitive Loads

Protection Coordination

Health Monitoring

Arc Flash Analysis


Economic Use of Power

Economic Analysis

Power Loss Capitalization

High Efficiency Motor

Power Factor Improvement

Energy Storage During Night

Variable Speed Motor Drives AC and DC

Regenerative Braking


Electrochemical Battery

Major Rechargeable Batteries

Electrical Circuit Model

Performance Characteristics

Battery Life

Battery Types Compared

More on the Lead-Acid Battery

Battery Design Process

Safety and Environment


Marine Industry Standards

Standard-Issuing Organizations

Classification Societies

IEEE Standard-45

Code of Federal Regulations

Military-Std-1399

 

Appendix A: Symmetrical Components

Appendix B: Operating Ships Power System Data

Author Bio(s)

Mukund R. Patel, Ph.D., P.E., is a professor of engineering at the U.S. Merchant Marine Academy in Kings Point, New York, USA. He has about 50 years of hands-on involvement in research, development, and design of the state-of-the-art electrical power equipment and systems. He has held positions including: principal engineer at General Electric, fellow engineer at the Westinghouse Research & Development Center, senior staff engineer at Lockheed Martin Corporation, and development manager at Bharat Bijlee (Siemens) Limited. Dr. Patel obtained his Ph.D. degree in Electric Power Engineering from the Rensselaer Polytechnic Institute, Troy, New York, and his M.S. in Engineering Management from the University of Pittsburgh. He also received an M.E. in Electrical Machine Design from Gujarat University, and a B.E. from Sardar University, India.

 
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