Permanent Magnet Dc Generator Characteristics

When a current carrying conductor is placed in a magnetic field it experiences a force.

Permanent magnet dc generator characteristics. Basic configuration of a permanent magnet dc motor is very similar to that of a normal dc motor. There are three methods of excitation and thus three main types of dc generators. The armature reaction is the opposite of the magnetic field developed by the permanent magnets and the magnetic field developed by the armature flux. A permanent magnet synchronous generator is a generator where the excitation field is provided by a permanent magnet instead of a coil.

Characteristics of dc generator. Dc generators are classified based on how their fields are excited i e. The characteristics of any motor are done to know the performance of the machine in different conditions. Self excited dc generators field coils excited by the generator.

The working principle of any dc motor is same i e. Separately excited dc generators field coils excited by some external source. The most common type of dc generators for wind turbines and small scale wind turbine systems used to charge batteries is the permanent magnet dc generator also know as the dynamo dynamos are a good choice for newcomers to wind power as they are large heavy and generally have very good bearings so you can mount fairly hefty rotor blades directly onto their pulley shaft. A permanent magnet generator is a device that converts mechanical energy to electrical energy.

The term synchronous refers here to the fact that the rotor and magnetic field rotate with the same speed because the magnetic field is generated through a shaft mounted permanent magnet mechanism and current is induced into the stationary armature. In this device the rotor windings have been replaced with permanent magnets.