Armature winding diagram pdf. The universal motor is very similar to a dc series. 4 dc motors 433 principle of operation consider a coil in a magnetic field of flux density b figure 4when the two ends of the coil are connected across a dc voltage source current i flows through it. Armature wiring is made from copper or aluminumcopper armature wiring enhances electrical efficiencies due to its higher electrical conductivityaluminum armature wiring is lighter and less expensive than copper. Construction of synchronous machines in a synchronous generator a dc current is applied to the rotor winding producing a rotor magnetic field.
To obtain the speed characteristics of a dc shunt motor as a function of armature. It is a commutated series wound motor where the stators field coils are connected in series with the rotor windings through a commutatorit is often referred to as an ac series motor. Motor rewindingpdf ebook download as pdf file pdf text file txt or read book online. Generator arrangement most modern larger generators have a stationary armature stator with a rotating current carrying conductor rotor or revolving field.
Lecture notes elements of electrical machines 5 dc generator an electrical generator is a machine which converts mechanical energy or power into electrical.