Diesel Generator Tech

Electric generators are, actually the lifesavers. They are backup power sources that convert fuel supply usually propane, diesel or gasoline, into electrical energy. They are the primary sources of electrical supply during power outages. This energy is used in an external circuit. Direct current generators The dynamo was the first electrical generator capable of delivering power for industry. The dynamo uses electromagnetic induction to convert mechanical rotation into direct current through the use of a commutator. Homopolar generator A homopolar generator is a DC electrical generator comprising an electrically conductive disc or cylinder rotating in a plane perpendicular to a uniform static magnetic field. A potential difference is created between the center of the disc and the rim (or ends of the cylinder), the electrical polarity depending on the direction of rotation and the orientation of the field. MHD generator A magnetohydrodynamic generator directly...

Diesel generator set shutdown ① Cummins Generator normal shutdown a. Stop: The unit controlled by the automatic module can stop normally by pressing the stop button by hand; the manually controlled unit can only turn the key to the “STOP” position, and can also achieve normal shutdown. b. Before shutdown, the load must be unloaded, and it is strictly forbidden to stop with load. In general, after unloading the load, the diesel genset needs to run for 3 to 5 minutes without load before stopping. c. When the load cable is connected or removed, the battery's negative wiring must be turned off and removed. ② Genset emergency shutdown a. The unit must be shut down immediately if abnormal noise or odor is emitted during start-up or operation. b. When the unit oil pressure suddenly drops to the limit or no oil pressure, the fault light is red and must stop immediately. The machine must stop immediately: a. When the unit water temperature sudde...

375KVA New Yuchai Diesel Engine Generator Engine: Yuchai / YC6MJ500L-D21 Alternator: Shanghai KEPU / TFW2-300-4A Automatic Control Module: SmartGen / 6110 Aspiration: Turbocharged & Intercooled Bore and stroke: 131 x 145 mm Compression ratio: 16.8:1 Displacement: 11.76 L Cylinder: 6 Governor type: Electronic governor Yuchai generator is equipped with 8 hours daily tank, 24V DC battery, battery charger, muffler, etc. Starlight Yuchai series generator power range is from 20KW to 2400KW.

Start the diesel generator set a. Do not start the diesel generator set with load b. Press the start button. If the start is unsuccessful, wait for about 20 seconds before trying again. If the start is unsuccessful for 3 consecutive times, stop the start and remove the fault factors such as battery voltage or oil circuit before starting. Note that continuous start-up in a system that is not working properly will cause unburned gas to accumulate in the exhaust system, posing a potential explosion hazard. c. For the mechanical speed regulating unit after the start of idle speed for about 1 minute, then the throttle is gradually raised to 1500r / min; electronic speed regulating unit, no need to adjust. d. To start the diesel genset in a cold environment, preparation must be done. Use winter fuel suitable for local temperature (qualified brand). This can reduce the risk of waxy deposits in the fuel injection system. In the case of extremely low ambient temperature, ...

What is emission grade of diesel generator? Emission grade is a standard indicating that emission standards for exhaust gas pollutants. The European standard is a reference for diesel engine emission standards. At present, diesel generator set will mark the European standard of engine exhaust emission. Such as European stage II, stage III, stage IIII etc. In generally, the emission standard requirement is Euro stage III emission standards or ECE R96 stage III A or higher than these standards. If exhaust gas emission can not meet the standard, maybe there is harmful to human body and environment. Diesel engine exhaust gas is one of the main sources of environmental pollution, the exhaust gas from diesel engine contains gaseous, liquid and solid pollutants. Gaseous pollutants contain oxides, organic nitrides and sulfur-containing mixtures, etc. Liquid pollutants contain H2SO4, HC, oxides, etc. Solid pollutants include hydrocarbons, such as carbon, metals, inorganic o...

The control of generator stator voltage is realized by adjusting the magnitude of rotor excitation current. The excitation corresponding to the amount of electricity generated is normal excitation. When the stator operating voltage is higher than the rated voltage, it is called overexcitation. Conversely, the stator operating voltage below the rated voltage is called underexcitation. In practice, there is a definite positive and negative value above or below the rated voltage. Different generators have different excitation control system and different excitation values. Generators and transformers are composed of iron core windings. If the applied voltage of windings is U, the turn number is W, the cross section of iron core is S, and the magnetic density is B, then U = 4.44fWBS. Because W and S is definite number, so it is written in B=KU/f, K=1./4.44WS, for each particular generator or transformer, K is a definite number. We can know from B=KU/f: the increase of voltage and the...

Yuchai diesel generator set 300KW 375KVA has just been assembled in the factory workshop. It is 3 phase 4 wire 50Hz generator set. Engine: Yuchai / YC6MJ480L-D20 Alternator: Starlight / TFW2-300-4A Controller: SmartGen / 6110 Standard configuration genset is equipped with radiator, air filter, fuel filter, oil filter, starter motor, charging alternator, control panel, etc.

To judge whether there are three blockages in Perkins diesel generator , the inspection method is to remove all high-pressure fuel pipes from the injection pump. One person plays the starter to drive the diesel engine and the injection pump to run. One person observes the oil discharge situation at the outlet valve of the high-pressure pump, and can easily distinguish the three kinds of blockage situation. 1.If the diesel engine can supply oil normally, while before disassembly, diesel engine operates unstable, it can be judged as water blockage, the main reason is that too much water in diesel oil, so that makes the engine unstable or unable to work. 2.If a lot of bubbles come out, while before disassembly, Perkins diesel engine can not work or unstable work, it can be judged as air blockage, the main reason is that there is air in diesel engine, so that diesel engine can not work. 3.If there is not oil supply, or supply little oil, it can be judged as foreign bod...

Working principle of AVR The voltage regulator is an adjustment device that controls the generator output voltage within a specified range. Its function is to automatically control the generator voltage and keep it constant when the rotating speed of the generator changes, so as to prevent the generator voltage from being too high to burn out the electrical equipment and cause the battery to overcharge. At the same time, it also prevents the generator voltage from being too low, resulting in malfunctioning of electrical equipment and insufficient battery charge. Since the transmission ratio of generator to engine is fixed, the speed of generator will change with the change of engine speed. The power supply of generator to electric equipment and charging to battery both require its voltage to be stable, so it is necessary to adjust the output voltage of generator if the voltage is kept at a certain value basically. A synchronous generator regulator that maintains the sync...

The increase in the speed of diesel generators has a great impact on the genset. The main effects are: 1. The diesel generator speed rises sharply, which will cause some friction surfaces of diesel generators to wear out due to dry friction. 2. The speed of the diesel generator increases, and the receiving force of the piston, connecting rod and crankshaft changes greatly when the throttle is hit, causing severe impact and easily damaging the machine. 3. The increase in the speed of the diesel generator will result in a series of factors such as an increase in output voltage and an increase in frequency. 4. The increase of the speed of the diesel generator increases the frequency of the power supply line, which will cause problems in the use of electrical equipment, such as changes in motor speed and heat generation. If it is serious, it will cause a safety accident. 5. When the speed of the diesel generator increases, the voltage of the power supply line r...

Video shows our 625KVA Shangchai (SDEC) diesel generator set , beautiful appearance and reliable performance. It is standard diesel genset 50Hz 400V 1500rpm 3 phase 4 wire generator (100% coper core alternator). Standard configuration: engine, alternator, control panel, circuit breaker, battery charger, starter motor, radiator, common base, daily fuel tank, 24V battery, bellow, air filter, fuel filter and oil filter, etc. Shangchai generator power range is from 50KW to 800KW.

Pay attention to the following points when selecting the site of the machine room: a. It should not be located in a room without an external wall, creating favorable conditions for the hot air duct and the exhaust pipe to extend outside; b. Try to avoid the main entrance, facade and other parts of the building, so as to avoid the impact of smoke exhaust and air exhaust. c. Pay attention to the impact of noise on the environment; d. It should be close to the substation of the building, which is convenient for wiring, reducing power loss and facilitating operation management; e. It should not be located directly below the toilet, bathroom or other places where water is often accumulated. Layout of equipment in the machine room: The equipment layout shall be based on the unit capacity and number of units, and shall be compact, economical and reasonable, safe and easy to maintain. When there is only one unit in the generator room , if the unit capacity is 500k...

All electric generators   have a maximum capacity based on two things—the capacity to generate electricity, and the engine that drives that generator. The greater the load, the more work the engine must do. 1 horsepower is about equivalent to 746 watts. If your motor is capable of one horsepower, the maximum power you can generate is 1 horsepower minus the mechanical losses of turning the generating unit. Generators are protected by circuit breakers that allow a few seconds of very high current, but will trip if the current stays high for too long. This “surge” allows the generator to start motors which require higher current to go from Zero RPMs to running speed. The main breaker is sized in accordance with the generator’s ability to produce current without burning itself up. Example A Kubota Diesel Generator rated at 12,000 watts (12 kilowatts) has a surge capacity of 14 kilowatts. It is powered by a Kubota D902 3-cylinder diesel engine rated at 20.4 hor...

New Diesel Generator Set Powered by Cummins Engine with Rated Power 400KW 0.8 lag 50Hz Starlight Cummins series diesel generator set power range is from 20KW to 2400KW. Alternators can select Stamford, Leroy-Somer, Marathon, Siemens, Engga, Shanghai KEPU, etc. Both open & silent (canopy) are available. Contact us: sales@dieselgeneratortech.com.

1. Composition of the excitation regulator Generator semiconductor excitation regulator is mainly composed of three basic units: measurement comparison, comprehensive amplification and phase shift trigger. Each unit is composed of several links. 1) The measurement comparison unit consists of voltage measurement, comparison setting and adjustment. The voltage measurement section includes measuring rectification and filtering circuit, and some have positive sequence voltage filters. The measurement comparison unit is configured to measure the converted DC voltage proportional to the generator terminal voltage and compare it with a reference voltage corresponding to the rated voltage of the generator to obtain a deviation of the generator terminal voltage from its given value. The voltage deviation signal is input to the integrated amplifier unit, and the positive sequence voltage filter can improve the accuracy of the regulator when the generator is running asymmetrically, a...