EE-112 DC Machines

18
DC Machines

description

dda

Transcript of EE-112 DC Machines

DC Machines

DC Machineshttp://www.nptel.ac.in/courses/ Basic Electrical TechnologyDC Motor Constructional Details

http://www.nptel.ac.in/courses/ Basic Electrical TechnologyDC Machine Armature WindingA coil. Coil span. A Double layer winding. Numbering a coilNumber of Commutator segmentsCommutator pitch:

http://www.nptel.ac.in/courses/ Basic Electrical TechnologyDeveloped Diagram of

http://www.nptel.ac.in/courses/ Basic Electrical TechnologyDeveloped View

N S N Shttp://www.nptel.ac.in/courses/ Basic Electrical TechnologyLap Winding

N S N Shttp://www.nptel.ac.in/courses/ Basic Electrical TechnologyLap Winding

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 http://www.nptel.ac.in/courses/ Basic Electrical TechnologyDeveloped View

N S N S2(S 1) should be multiple of number of poles

http://www.nptel.ac.in/courses/ Basic Electrical TechnologyWave Winding

S N S N Shttp://www.nptel.ac.in/courses/ Basic Electrical TechnologyWave Winding

1 10 2 11 3 12 4 13 5 14 6 15 7 16 8 17 9 1http://www.nptel.ac.in/courses/ Basic Electrical TechnologyEMF Equation

http://www.nptel.ac.in/courses/ Basic Electrical TechnologyTorque Equation

http://www.nptel.ac.in/courses/ Basic Electrical TechnologyGenerator types & Characteristics(i) separately excited generator, (ii) shunt generator(iii) series generator (iv) compound generator.

http://www.nptel.ac.in/courses/ Basic Electrical TechnologyNo load or Open circuit characteristic

http://www.nptel.ac.in/courses/ Basic Electrical TechnologyLoad characteristic

http://www.nptel.ac.in/courses/ Basic Electrical TechnologyCharacteristics of a shunt generator

http://www.nptel.ac.in/courses/ Basic Electrical TechnologyLoad Characteristics of Shunt Generator

http://www.nptel.ac.in/courses/ Basic Electrical TechnologyCompound Generator

http://www.nptel.ac.in/courses/ Basic Electrical Technology