Course Title : Applied Electric Machinery

Code 61060
Course Year 3rd year
Term 2nd term
Class day & Period
Credits 2
Restriction No Restriction
Lecture Form(s) Lecture
Instructor Taketsune Nakamura

Course Description

This lecture will explain principles and concepts of electric machineries used in the fields of our living and industrial applications. Especially, detailed explanation will be made for variable speed control of the rotating machines and re-generation method. Recent trends for the developments of the electric machineries such as ones for the electric vehicle and the wind turbine are also to be outlined.


Evaluated by means of the examination. Imposed drills at the lecture and reports may also be considered for the evaluation.

Course Goals

Understand fundamentals of designs, kinetic characteristics, coordinate transform as well as concept of variable speed control and drive-control method of rotating machineries. Also, understand basic concepts on recent trends of the developments.

Course Topics

Theme Class number of times Description
Concept of output power and fundamental aspects of design in electric machineries 2-3 Discuss the relationship among output power, rotating speed, pole number, electric loading and magnetic loading in electric machineries. Also, concept of temporal rating and that of object oriented design are also to be explained.
load characteristics and kinetic characteristics 1-2 Discuss the load characteristics, kinetic characteristics, etc. of the rotating machineries are explained. Examples of visulalized simulation results may also be shown for the aid of easier understanding.
Principle of variable speed control of rotating machineries 6-8 Based upon concrete examples, necessity for the variable speed control of the rotating machineries is discussed. And then, fundamental equations of respective rotating machines, method of coordinate transform for the expression of dynamic characteristics are explained. Further, basic concept and fundamental principle of the variable speed control is described.
Power conversion for drive of rotating machines 1-2 Power conversion method for the realization of variable speed control is explained.
Permanent magnet rotating machines 1 Permanent magnet rorating machine, which is one of the most major motors, is explained from the point of view of its rotating principle as well as characteristics.
Trends of new electric machineries 1-2 Trends of developments of new rotating machineries, e.g., electric (hybrid) automobile, linear motor, wind turbine, etc., are outlined. Also, concept and meaning of re-generation is explained.


Tokai Kim, "Modern electric machinery" Denki-gakkai


Takao Okada et al., "Electric machinery (2)"(second edition) Ohmsha ,
Sakutarou Nonaka, "Electric machinery (1), (2)" Morikita-shuppan


Electric Circuits, Electromagnetic Theory, Power Electronics, Control Theory

Web Sites

Additional Information

Documents will be distributed if necessary.