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Per Unit Analysis for Single and Three Phase Systems

person icon Graham Van Brunt

4.5

Per Unit Analysis for Single and Three Phase Systems

"Per Unit Analysis", another tool to help analyze power systems and aid in understanding equipment specifications

updated on icon Updated on Jun, 2025

language icon Language - English

person icon Graham Van Brunt

English [CC]

category icon Business,Industry,Electrical Engineering

Lectures -14

Resources -2

Duration -6 hours

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Course Description

In the power systems analysis field of electrical engineering, a per-unit system is the expression of system quantities as fractions of a defined base unit quantity. Calculations are simplified because quantities expressed as per unit do not change when they are referred from one side of a transformer to the other.

In this course, you will learn exactly what Per Unit Analysis is, the main advantages of using it, how manufacturers of equipment use and rate their products, and the technique of converting to and from the Per Unit system.

Several examples of working Per Unit are demonstrated in this crisp clear presentation. When you finish you will have a thorough understanding of this subject.

It is important for all power engineers and technicians to be familiar with the concept of Per Unit as it is being used and referred to every day in power flow, short circuit evaluation, and motor starting studies.

Who this course is for:

  • The targeted audience is Managers, Engineers, Technologists, and Maintenance Personnel working in the electrical power protection industry.

Goals

  • In this course, you will learn exactly what Per Unit Analysis is and how manufacturers of equipment use it to rate their equipment.

Prerequisites

  • The student should have an understanding of the laws and theorems related to three-phase electrical power systems.

Per Unit Analysis for Single and Three Phase Systems

Curriculum

Check out the detailed breakdown of what’s inside the course

This course contains 10 lectures including the introduction (lesson #1)

14 Lectures
  • play icon 00 Intro (R1) 05:54 05:54
  • play icon 01 Per Phase Analysis (R1) 33:33 33:33
  • play icon 02 The Normalization Process 50:29 50:29
  • play icon 03 A Single Phase PU Example (R1) 10:18 10:18
  • play icon 04a Three Phase PU Analysis & Transformer Configurations (R1) 51:53 51:53
  • play icon 04b Three Phase PU Analysis & Transformer Configurations (R1) 44:01 44:01
  • play icon 04c Three Phase PU Analysis & Transformer Configurations (R1) 51:03 51:03
  • play icon 05a Change of Bases (R1) 16:06 16:06
  • play icon 05b System Circuit Analysis 27:19 27:19
  • play icon 06 Three Phase PU Example 18:30 18:30
  • play icon 07 A PU Example 09:27 09:27
  • play icon 08 A PU Example 22:10 22:10
  • play icon 09 A PU Example 24:21 24:21
  • play icon Resources

Instructor Details

Graham Van Brunt

Graham Van Brunt

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