Electromechanical Energy Conversion

UNIT I

Chapter 2

Electromechanical Energy Conversion

Syllabus

Principle of electromechanical energy conversion forces and torque in magnetic field systems- energy balance in magnetic circuits- magnetic force- co-energy in singly excited and multi excited magnetic field system mmf of distributed windings - Winding Inductances-, magnetic fields in rotating machines- magnetic saturation and leakage fluxes. Introduction to Indian Standard Specifications (ISS) - Role and significance in testing.

Contents

 2.1 Introduction ...... 2 – 2 Dec.-05, 06, May-05,17, Marks 13      

 2.2 Energy Balance …….. 2 – 2                                                               

2.3 Laws of Electromagnetism ............. 2-3                                                              

2.4 Energy Flow in Electromechanical Energy Conversion Device ...................2 – 4 May-03, 08, 10, 11, 15, Dec.-09, 06, Marks 8

2.5 Types of Magnetic System .............. 2-5       

2.6 Singly Excited Magnetic System ..........2 - 6  May-03, 04, 05, 06, 09, 10, 11, 14, 16, 19, Dec.-02, 04, 09, 10, 13, 14, 15, 16, 17, 18, April-03, Marks 16               

2.7 Multiple Excited Magnetic System ........2 – 20  May-03, 06, 07, 10, 11, 13, 14, 15, 16, Dec.-03, 04, 05, 10, 12, 14, 15, 18, 19,April-04, Oct.-02, Marks 16,

2.8 Energy Conversion Via Electric Field ......2 – 30 ‘ Dec.-08, May-13, Marks 16   

2.9 Advantages of Field Energy Method. ... ... 2 - 33  

2.10 Three Phase Winding in A.C. Machines. ....2 – 33  May-07, 10, Dec.-07, Marks 6 

2.11 M.M.F. of Distributed A.C. Windings ......2 – 36  May-14,17, Marks 8 

2.12 Magnetic field in Rotating Machines (Rotating Magnetic Field) ....................2 – 40 April-03, Dec.-03,06,07,08,09,10,12,16, May-03, 05, 07,11,14, Marks 16   

2.13 Leakage Fluxes in Rotating Machines......2 – 46 May-11, Marks 8 

2.14 Introduction to Indian Standard Specifications (ISS) .. ........2 - 47.

2.15 Two Marks Questions with Answers ....... 2 – 49