Method for improving non-linear load charging capability of synchronous generator set by adding shafting flywheel
A non-linear load and generator set technology, applied in the direction of electric components, control mechanical energy, electrical components, etc., can solve the problem of targeted design of synchronous generator sets, high blindness and uncertainty of equipment power supply, and linearity in new small-capacity power supply systems. Problems such as extreme mismatch of power supply and nonlinear load
Inactive Publication Date: 2015-01-07
ARMY ENG UNIV OF PLA
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Problems solved by technology
This has caused an extreme mismatch between the linear power supply and the nonlinear load in the new small-capacity power supply system
The synchronous generator set has not been specifically designed according to the characteristics of nonlinear loads, which leads to the fact that when the synchronous generator set designed according to the conventional method supplies power to nonlinear loads, the output cannot meet the design requirements, making the selection of equipment power sources highly blind sex and uncertainty
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[0035] The prime mover and synchronous generator of the synchronous generator share the same shaft system, and it is only necessary to install a flywheel on the prime mover according to the conventional method. When designing, it is necessary to ensure that the rotating shaft of the prime mover is longer than that of the prime mover without flywheel, and there is sufficient length margin for installing the flywheel. A simulation model of a three-phase power supply with an uncontrolled rectifier circuit is established in MATLAB, and the waveform and frequency spectrum of the output current of the generator set are obtained according to the simulation results. The analytical formula of the electromagnetic torque of the synchronous generator is obtained from formula (5), and its change curve is drawn. like figure 1 Shown:
[0036] figure 1 Among them, M represents the maximum output torque of the diesel engine, T e Indicates the electromagnetic resistance torque of the synchr...
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A method for improving the non-linear load charging capability of a synchronous generator set by adding a shafting flywheel includes: a rotating shaft of a prime motor of the synchronous generator set is extended, the cross section of the tail end of the extended rotating shaft is processed into a regular hexagon for installing flywheel sheets, holes which are regular hexagons are arranged at the centers of the flywheel sheets and sleeved on the rotating shaft for installation, fixing parts of the flywheel sheets are formed by a shaft sleeve of the rotating shaft and a welding vertical ring, screw holes are arranged on the flywheel sheets and the vertical ring, and the flywheel sheets are fixed with the vertical ring through bolts. The method for improving the non-linear load charging capability of the synchronous generator set by adding the shafting flywheel improves the capability for charging non-linear load of the synchronous generator set, the flywheel easy to install and demount is added on a shafting of the generator set, so that inertia of the power source is increased, the stability and power supply quality of a power supply system are increased, and the effect of stabilizing the frequency is achieved.
Description
technical field [0001] The invention relates to a method for improving the nonlinear load capacity of a small-capacity synchronous generator set, which is mainly applied to an independent nonlinear small-capacity power supply system, and can effectively improve the stability of the generator set when supplying power to nonlinear loads. technical background: [0002] The independent small-capacity power supply system has a small power generation capacity and is generally arranged near the user. The power supply mode is flexible and convenient. It is widely used in equipment power supply places such as ships, industrial and mining enterprises, and oil drilling platforms. It is also used as a backup or emergency power supply system for some important users. , such as intelligent buildings, hospitals, power plants, communication stations, etc. With the development of power electronics technology, a large number of rectifier and pulse loads appear in the small-capacity power supp...
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IPC IPC(8): H02K7/02
CPCY02E60/16
Inventor 王金全宋鹏超赵锦成徐晔李建科李乾
Owner ARMY ENG UNIV OF PLA