Diesel generators are very durable engines but come at the cost of selling high emissions as well. Most diesel generators are popular in open spaces because diesel generators have a relatively loud noise but high fuel consumption. Quite economical than gasoline, the weight is quite a lot because the diesel engine is an engine that uses a lot of steel material.
When there is a power failure or in the part where there is no electrical installation Power must be backed up. Therefore, there must be a generator or simply called a generator to use. In this article, it tells how it works, how it works and what it does. Why is it necessary to use a generator?
Thursday, September 8, 2022
Diesel generator
Inverter generator
This inverter generator is a generator developed from a gasoline generator. Inverter generators have low oil consumption, low emissions, and low noise and quiet. The disadvantage of inverter generators is that. The price is higher than general generators.
Magnetic poles, the part that creates a magnetic field. The magnetic poles are stationary and are attached to the DC generator frame.
Frame (Frame or Yoke) A frame that holds the axis of the magnet pole and the machine cover. It also provides a path for magnetic fields to provide a complete passage of the magnetic lines. The chassis is usually made of cast iron or steel. Plates that are bent in a way, cylinder, and then welded to hold the joints together. In addition, for large generators, the machine frame is designed to be divided into two parts for ease of transport, with one part being the upper part and the lower part, which can be assembled Machine with knots and screws.
Magnetic pole and Pole Shoes and the tip of the magnetic pole that The rounded arch of the armature axis (Pole Shoes) is made from laminated steel sheets. The pump is the axis of the magnetic pole and Pole Shoes to be assembled into the same sheet by protruding from both edges in front of the magnetic pole. which will look curved The round shape of the armature axis is Pole Shoes Pole and Pole Shoe.
A magnetic field coil is a field coil wound around the core of all primary magnetic poles. by the field windings are insulated With a material such as cotton tape, it is soaked with varnish and dried, then attached to the magnetic pole core. Must be connected to the north and south poles alternately or adjacent poles must be poles of different types.
Commuter The part that serves to change the AC voltage in Armature winding to DC voltage In addition, commuters do function of arranging electricity The commutators are made of copper rods, each of which has a wedge-shaped reamer. for ease of assembly in a cylindrical shape But there will be a sheet of mica in the middle between each tooth. with the size of the working power of the generator, including the voltage between the SECommu The stator is adjacent to the internal structure of the commutator.
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Self-excitation type DC generator
Self-excitation type DC generator There is a principle by the coil. The magnetic field is stimulated by means of DC voltage. from induction of the residual magnetic field inside the generator itself When the armature rotates, a slight induced emf is generated. and will generate electricity As a result, this little current flows through the magnetic field coil, creating a magnetic field. by this magnetic field will help reinforce the magnetic field which is residual at the magnetic pole Therefore, the magnetic field becomes more intense, resulting in induction followed by increased induced emf. more and more
The self-excitation DC generator can also be divided According to the nature of the magnetic coil connection can be 3 types, which will be called The name of each type of self-excitation DC generator is correlated with the way the magnetic field coil is connected to the R winding.
Parallel DC Generator (Shunt DC.Generator)
The working principle of a parallel self excitation DC generator is that when the magnetic field winding is connected in parallel with the armature winding and the generator output, then the current generator is called. exactly this type that Parallel DC Generator by the value of the electric current Excitation of the magnetic field coil in a parallel DC generator is up. Depending on the output voltage and resistance of the magnetic coil, the excitation current of the magnetic coil is normally controlled to be between 0.5-5 percent of the load current.
Wednesday, September 7, 2022
Series DC Generator
The working principle of the self-excited DC generator in series is that the magnetic field coil is connected in series with the armature winding and the output of the generator, so this type of generator is called DC generator. serial coil excitation current The magnetic field that flows through the magnetic field coil of this generator is It is the same as the current that the generator supplies to the load, so we make the output voltage depend on the current flowing through the load.
Compound DC.Generator
The mixed DC generator is to bring the advantages of the generator. Direct current in parallel and in series are combined into one device, becoming a hybrid generator. This is an even better feature. Types of DC generators can be divided according to the circuit connection characteristics of the coil. A magnetic field has two characteristics:
- 1. Long Shunt DC. Compound Generator
- 2. Short Shunt DC. Compound Generator