DC GENERATOR

DC Generator
     There are many kinds of generator depending on its output, one of the common generator is the DC generator. DC generator has an output of pulse dc(direct current). The output is dependent on the construction and arrangement of its stator poles and commutator. One example is simple dc generator that has 1pole and 2 magnets. In the first phase the coil construction is perpendicular to the magnetic field created by the magnet. The voltage induced is equal to

E=Ndf/dt

E = induced voltage in generator terminals
N = number of turns .n coil
df/dt = rate of change in magnetic flux with respect to time      
To make it more clear, the term
                                             df/dt
means that how fast is the rotation of the shaft of the generator, the faster the rotation, the higher the voltage is produced.

 Some of the DC motors are use in measuring the speed, such as tachometer, anemometer and speedometer. For example, it is mechanically connected  to anemometer for example to measure the speed of wind. Since all construction of batteries are the same, positive to one side and negative to the other, this is the main reason why DC generators mainly used in household generators. It can be directly connected to batteries for storage and means less parts used. The larger the number of poles the generator have, the smoother is its output voltage and produce larger power, and the output waveform can now be assumed to be perfectly direct current.

      Above is the block diagram of the construction of the DC generator and its usage. The DC generator produces power and the control system analyzes the power receive.The control system also control if it is going to supply the battery or not(if full). Control system is the overall safety of the system. It also controls the flow of power in the household, if it detects a short circuit is opens up and stop producing power.