DC Generator
Series Gen-Rising voltage characteristics-used as booster in feeders
Shunt Gen- Constant voltage- Battery charging,ordinary lighting
Compound-
Differential-Drooping characteristics-Welding power supply Flat compound-constant voltage-ordinary lighting
overcompound-voltage increases as load increases-booster in traction lines
DC Motor
Series motor-high starting torque-Traction,crains,hoists
Shunt motor - Medium torque,constant speed-Lathe machine,constant speed line shafting,centrifugal & reciprocating pumps
· Variable speed motor which changes speed drastically from one load condition to another. It has a high starting torque. Applications: hoists, electric trains, conveyors, elevators, electric cars.
One advantage of a DC motor is variable speed. Increase the voltage and the speed increases. (Technically, you increase the current, but with a fixed resistance
in the motor windings, then increasing the voltage will increase the current)
Another advantage is: since batteries are DC, they are great for battery powered
devices which need a motor.
One major application is portable tools, such as battery powered electric drills.
A DC machine is important because it is something that businesses need to assemble products. It is used widely in assembly line productions.
Series DC motor develops a very large amount of turning force called torque from standstill and can be operated by using either an AC or DC power source.
dc series motor
dc series motor
we can either use dc series motor or induction machine ,but dc supply is not easily available so we use induction motor ,
DC Series motor should never run without load connected to it because starting torque for DC series motor is infinite and running it on no load will damage the motor due to overspeeding.
what are the advanced applications of dc series motor
applications of series motor
what are the advanced applications of dc series motor
applications of series motor
DC series motors...
A dc series motor can work on dc and ac because dc motors are totally reversible.
dc series motor is used for traction...
DC Motor applications are nowdays rare in an industrial environment. However you find them in toys, domestic devices like shaver, etc
The DC series motor is a high torque motor. so that it can pull heavy loads such as traction, lifts etc., the control of speed of a DC series motor is very smooth and easy.
At no load, the flux is only due to the residual flux, which is very small. the no load speed of dc series motor is very high. so the rotating part of the motor are damaged. hince dc series motor should never be run without motor.
A dc series motor with speed control can be connected on ac supply because dc machines are totally reversible.
DC series motor is suitable for the tractions