Diesel Generator Tech

An alternator is a mechanical device that converts other forms of energy into electrical energy. Alternator is generally composed of rotor, stator, rectifier and end cover. The rotor is composed of rotor core (or magnetic pole) winding, guard ring, center ring, slip ring, fan and rotating shaft. The function of the rotor is to generate a magnetic field. Installed inside the stator. The stator consists of stator core, wire windings, engine base, and other structural parts that fix these parts. The function of the stator is to generate alternating current. The principle is that the stator and the rotor of the generator are connected by the bearing and the end cover, so that the rotor can rotate in the stator, and does the movement of cutting magnetic line, thus generating the induction potential, which is led out through the terminal and connected in the loop, and the current is generated. There are many forms of generators , but their working principles are based on the la...

Alternators need DC excitation at the rotor to create rotating magnetic field. DC power  → electromagnets  → Rotation → Rotating Magnetic field. Working exciter is known as the primary source of DC power for rotor excitation. There are 3 ways to excite the rotor of an Alternator 1. By using DC Generator 2. Static  Excitation 3. Brushless Excitation The main purpose of exciter in a generator(alternator) is to provide stationary rotating magnetic field.Which is used to induce the e.m.f in the armature coil. So, DC power is given to exciter and the exciter is nothing but a coil, and the exciter creates a magnetic field. If a mechanical supply is given to the exciter then there will be a rotating magnetic field which cuts the stationary armature coils and induces emf in the stationary armature coil. Exciter is a small generator, mounted on the same shaft as that of the main generator, which produces DC power for the main generator fi...

2.1 Gear system and valve mechanism of Weichai Power Generation   Diesel Engine The valve mechanism comprises camshaft gear, camshaft, tappet, push rod and valve train, and it adopts a structure of overhead valve and underneath camshaft. Camshaft gear1 is driven by crankshaft gear 6 through idle gear 2, and crankshaft gear 6 also drive fuel injection pump 3 through idle gear 2.The gears should be assembled according to the paired engagement marks. Each gear is marked with “.”, and the gears must be assembled with “.” marks aligned to ensure that the valve timing and fuel supply time are correct, as shown in Figure 2-1. Driven by the camshaft gear, the camshaft controlsthe opening and closing of intake and exhaust valves according to certain valve timing through the tappet and push rod. 2.2 Lubricating system Lubricating system consists of oil strainer, oil pump, oil filter and all internal pipes. The diesel engine adopts a combined lubrication method: pressure...

Starlight Power provides 20KW to 3000KW Shanghai KEPU synchronous brushless generator 3 phase 4 wire - AC generator used in diesel power generators. Copper coil generator with good quality. Excellent Electrical Performance Steady state voltage regulation ≤ 4 ± 0.1% Transient voltage regulation rate ≤± 20% - 15% Voltage setting range ≥ 10%UN The line-voltage sinusoidal waveform distortion rate ≤ 5% Ratio of voltage warp (Three phase loads are out of balanced) ≤ 5% Excellent Structural Design The integral salient-pole rotor is used; use special designs for iron-core ventilation; the windings are solid and have good performance in thermal radiating. The rotor has a full-damping. the generator works stable in a parallel running together with another generator. Use cylindrical steel base. The appearance of the product is novel and delicate. High-accuracy A.V.R (Automatic voltage a regulation system) is equipped on the generator. While the generator runs ...

If you don't know about Siemens generator/alternator dismantling, assembling, and control principle, this article will show you more. 6.1 Dismantling This work must always take place in a clean environment containing no dust or moisture. The cable entry plate must be removed before the  generator  is actually dismantled. The terminal box must be opened in order to do so, and the exciter cables and bearing thermometer leads loosened. When the bolts adequate have been loosened, the guard over the rotating rectifier can be removed and the three-phase bridge or varistor replaced. When adequate bolts have been loosened, the two bearing can be forced off with the aid of the extraction tool and the tapped holes in the end shields. The bearings can then be inspected or replaced. The stator and rotor windings of the primary machine and the exciter can be checked after the rotor has been lifted out. 6.2 Assembling The generator must be re-assembled in reverse order. Suitabl...

Technical Characteristics 2.1 - Electrical characteristics This alternator is generator without slip rings and revolving field brushes, wound as “2/3 pitch”; 12-wire, with class H insulation and a field excitation system available in either SHUNT or AREP version. In order to conform to standard EN 61000-6-3, EN 61000-6-2, EN 55011, the R 791 interference suppression kit is needed. Electrical options - Stator temperature detection probes. - Space heaters. 2.2 - Mechanical characteristics - Steel frame - End shields in cast iron - Greasable ball bearings - Mounting arrangement MD 35: single bearing with standard feet and SAE flanges/coupling discs. B 34: two-bearing with SAE flange and standard cylindrical shaft extension. - Drip-proof machine, self-cooled Mechanical options - Direct power output by (non reconnectable) cables, regulator fitted outside the alternator. - Protection against harsh environment. - Air input filter, air output lab...

Electrical System The engine is equipped with a 2-pole electrical system and an alternator. System voltage is 24V. WARNING! Always stop the engine and break the current using the main switches before working on the engine. Main switch IMPORTANT! Never disconnect the current with the main switches when the engine is running, the alternator and electronics could be damaged. The main switches must never be switched off before the engine has stopped. If the circuit between the alternator and the battery is disconnected when the engine is running, the alternator and electronics can be damaged. For the same reason the charging circuits must never be re-connected with the engine running. Fuses The engine is equipped with a 10 A circuit breaker which cuts the current if overloaded. The circuit breaker is located on the left-hand side of the Volvo engine Location of Sensors. The engine stops if the fuse trips. If the circuit breaker trips frequently, an autho...