Marine Electrical Power Systems:
Ship Electrical Distribution System Design:
Paralleling AC Sources

Last Update: July 28, 2025

Essential Questions

Essential Question Level of Thinking
Why are AC sources paralleled in shipboard systems?
Understand
What are the elements of synchronization?
Understand
What are the potential risks and consequences of improper synchronization?
Understand
What is the procedure for manually paralleling two ac sources?
Apply
What are Permissive Manual Synchronization and Automatic Synchronization?
Understand

Text Material

Presentation Material

Images

I_20250724a USNA Power Lab Synchroscope

I_20231107a USNA Power Lab Synchronization Module

Video Material

Experiment 16: Stuck Breaker Contact

References

IEEE Power System Relaying and Control (PSRC) Committee Working Group J20, " Practices for Generator Synchronizing Systems " April 2024.


(C) Copyright 2025 Norbert Doerry

This work by Norbert Doerry is licensed under CC BY 4.0

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