Electric Machinery – Fall 2009
Welcome to ECGR4143!
Course Announcements
- A brief note describing the machine to be used experimentally in Problem Set 5 is available here.
- The second part of Problem Set 5 is available here.
- Problem Set 5 is available here.
- Problem Set 4 is available here.
- The first part of Problem Set #3 is available here.
- The second part of Problem Set #3 is available here.
- The datasheet for the ferrite core is available here. This datasheet contains information such as the reluctance of the core (A_l) and the area of the core.
- The datasheet for the 3C81 ferrite material is available here. This datasheet contains information such as the permeability and the B-H curve.
Introduction
Electric machines are the workhorses of modern industry. They are found in a variety of different types and sizes – from small rotating machines that vibrate cell phones and pagers to turbine generators with ratings upwards of 1 GW. Fundamentally, all of these machines are based on the same important concept – using a magnetic field as the medium for transferring and converting energy.
This class will address two important concepts – analysis and control. Primarily, we will focus on the physics of the energy-conversion process in many different types of machines – brushed DC motors, permanent magnet motors, synchronous generators, induction machines, etc. In addition, we will discuss methods for speed and position control. We’ll make use of numerous examples, and we’ll construct some of the circuitry need to control DC and AC machines.
The staff and students of ECGR4143 thank the following sponsors for their generous support of the course:
AREVA NP
The Cambridge-MIT Institute
The Grainger Foundation
The Landsman Foundation
Ford Motor Company
Mr. Ron Koo
The staff and students of ECGR4143 also thank Professor Steven B. Leeb of MIT for his gracious support.
The staff and students of ECGR4143 also acknowledge Dr. Zia Salami of AREVA NP for his generous support.
