A dc motor is a device that works on the principle of faradays law of electromagnetic induction. A brushed dc electric motor is an internally commutated electric motor designed to be run from a direct current power source.
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Dc compound motor diagram. The working principle of this motor mainly depends on electromagnetic law. A compound wound dc motor also known as a dc compound motor is a type of self excited motor and is made up of both series the field coils s 1 s 2 and shunt field coils f 1 f 2 connected to the armature winding as shown in the figure below. A 4 point starter protects the armature of a dc shunt motor or compound wound dc motor against the initially high starting current of the dc motor. Briefly we can say that dc compound motor is a combination of. Brushed motors were the first commercially important application of electric power to driving mechanical energy and dc distribution systems were used for more than 100 years to operate motors in commercial and industrial buildings. Working principle of 4 point starter.
These two desirable charac teristics can be found in the same motor by placing both a series. The self excited motors are further classified as shunt wound or shunt motor series wound or series motor and compound wound or compound motor. Over compound dc generator is used to reimburse the voltage drop within feeders. The motor can be connected in two arrangements. It generally converts electrical energy into mechanical energy. In this article we shall discuss the basics of dc motor and characteristics of different self excited motors like dc shunt series and compound motor.
Compound dc motor when comparing the advantages of the series and shunt motors the series motor has greater torque capabilities while the shunt motor has more constant and controllable speed over various loads. This article discusses an overview of the series motor and the main function of this motor is to convert electrical energy to mechanical energy. Types of dc motor a direct current motor dc is named according to the connection of the field winding with the armaturemainly there are two types of dc motors. This motor is used when both a high starting torque and good speed regulation is needed. A compound dc motor connects the armature and fields windings in a shunt and a series combination to give it characteristics of both a shunt and a series dc motor. First one is separately excited dc motor and self excited dc motor.
Compound dc generator is used to provide the power supply for dc welding machines. From the above information finally we can. Thus this is all about the dc generator. Basics of dc motor. Dc compound motor or compound wound dc motor is also a self excited motor but it is a compound of both series and shunt field coils connected to the armature winding a series field winding connected in series with the armature and a shunt field winding connected in parallel to the armature. Similarly self excited motors classified into three types namely dc series motor dc shunt motor and dc compound motor.
The 4 point starter has a lot of constructional and functional similarity to a 3 point starter but this special device has an additional point and coil in its construction as the name suggests. Level compound dc generator is used to provide a power supply for hostels lodges offices etc.
Gallery of Dc Compound Motor Diagram
