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Adjustment method of parallel generation power of shaft power generation system and diesel generator

A technology of diesel generators and shaft generators, applied in the direction of single-network parallel feed arrangement, etc., can solve problems such as unreasonable power matching, and achieve the effect of saving energy consumption and improving power generation efficiency

Inactive Publication Date: 2015-04-29
WUXI SILENT ELECTRIC SYST SES TECH CO LTD +1
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Problems solved by technology

[0003] The invention provides a method for adjusting the parallel power generation of a shaft generator system and a diesel generator, which solves the unreasonable power matching technology when the existing shaft generator is connected in parallel with the diesel generator through a frequency converter and supplies power to the load together. problem

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  • Adjustment method of parallel generation power of shaft power generation system and diesel generator
  • Adjustment method of parallel generation power of shaft power generation system and diesel generator
  • Adjustment method of parallel generation power of shaft power generation system and diesel generator

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Embodiment Construction

[0040] The present invention is described in detail below in conjunction with accompanying drawing:

[0041] The shaft power generation system includes a propeller 1, a gearbox 2, a ship driving main engine 3, a marine power grid 5, an electrical load 6 on board, a frequency converter 7 and a shaft generator 8. The ship driving main engine 3 drives the propeller 1 through the gearbox 2 to drive The ship moves forward while providing electric energy to the shaft generator 8 , the shaft generator 8 is connected to the marine grid 5 through the frequency converter 7 and the diesel generator 4 , and the electrical load 6 on board is supplied with electrical energy by the marine grid 5 .

[0042] The frequency converter 7 is the key component for matching the parallel power generation of the shaft-driven power generation system. 34, grid-side current detector 33, DC voltage detector 32, machine-side voltage detector 30, and machine-side current detector 31, and the inverter 7 collect...

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Abstract

The invention discloses an adjustment method of parallel generation power of a shaft power generation system and a diesel generator. The method solves the problem of unreasonable matching of parallel power of the existing shaft generator and the diesel generator via a frequency converter. Grid side voltage setting 0 has a deviation from grid side voltage Vgd computed by a first 3 to 2 conversion module 20, so that PWM (pulse-width modulation) pulse Vg<*> output by a first PWM generator 16 is adjusted; an output voltage phase of a shaft generator 8 is changed, and transient fluctuation of the diesel generator 4 can also result in adjustment of a voltage phase of a marine power grid 5 to various extents until a new equilibrium point is reached, so that reasonable and economic matching of the parallel generation power of the shaft power generation system is achieved; the consistency of output frequency of the shaft generator 8, output frequency of the diesel generator 4 and frequency of the marine power grid 5 is achieved by controlling and processing a pulse signal of a grid side inverter 11 and a pulse signal of a machine side inverter 10; and economic, reasonable and energy-saving power generation of the diesel generator is achieved.

Description

technical field [0001] The invention relates to a power supply system on a ship, in particular to a method for adjusting and matching power generation when a shaft power generation system on a ship is connected in parallel with a diesel generator on the ship to supply power to loads on the ship. Background technique [0002] With the development of ship energy-saving technology, shaft generators have been used in the main shaft system of ships, aiming to reduce the capacity of power station equipment during ship construction, greatly reduce the cost of ship construction, maintenance and operation, and achieve the goal of improving shipping enterprises. purpose of economic benefit. At the same time, those skilled in the art have also begun to study the parallel connection of the shaft generator and the ship's power station to generate power for the electric loads on the ship. Due to the extremely soft load characteristics of the on-board power grid, the power system after th...

Claims

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Application Information

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IPC IPC(8): H02J3/46
CPCH02J3/46
Inventor 邵诗逸乌云翔兰建军樊双英常国梅郭晨曦靳雁艳
Owner WUXI SILENT ELECTRIC SYST SES TECH CO LTD
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