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Off-grid starting system and method of marine shaft generator system

A technology for shaft power generation and start-up systems, applied in control systems, control generators, generator control circuits, etc., can solve the problems of increasing system load, higher manual operation requirements, increasing shaft power generation costs and error rates, etc. Achieve the effect of improving reliability and simplifying human operation

Pending Publication Date: 2017-06-20
HUNAN LINENG TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the shaft power generation system of the brushless doubly-fed motor is started by the marine power grid, it will not only increase the number of circuit breakers in the shaft power generation system, but also increase the system load and increase the requirements for manual operation.
The above points increase the cost and error rate of shaft generation

Method used

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  • Off-grid starting system and method of marine shaft generator system
  • Off-grid starting system and method of marine shaft generator system

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. In addition, those skilled in the art can make corresponding combinations of features in the embodiments in this document and in different embodiments according to the descriptions in this document.

[0022] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein, for example, can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comp...

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Abstract

The invention presents an off-grid starting system of a marine shaft generator system. The off-grid starting system comprises a motor control system, a microcomputer controller, a grid-connected circuit breaker, and a power factor corrector. The motor control system comprises a brushless doubly-fed motor and a first PWM converter connected with each other. The microcomputer controller is connected with the motor control system and the power factor corrector. The power factor corrector is connected with a grid through the grid-connected circuit breaker. The process in which the marine shaft generator system is started, disconnected from the grid and connected to the grid can be completed through the grid-connected circuit breaker and a direct current source. Artificial operation is simplified. The reliability of the system is improved. The marine shaft generator system can be directly started to off-grid operation, and there is no need to consider whether a marine engine grid can work properly. The invention further provides an off-grid starting method of a marine shaft generator system.

Description

technical field [0001] The invention relates to the field of motor control, in particular to an off-grid starting system and method for a ship shaft power generation system. Background technique [0002] The marine shaft generator system is referred to as the shaft generator system or the shaft generator system. It is driven by the main engine to drive the marine generator. The abundant power of the main engine is used to achieve the purpose of energy saving, and the "reserve margin" of the main engine can be fully utilized. The use of the main engine shaft to generate electricity has been applied to small and medium-sized ships in various countries as early as the era of direct current. With the development of power electronics technology, shaft generators, as an effective means to save operating costs and improve engine room management and operating conditions, have attracted the attention of shipbuilding and shipping circles in various countries due to their unique advant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/44H02P9/00H02P9/08H02P101/35
CPCH02J3/38H02J3/44H02P9/007H02P9/08H02P2101/35H02J3/388
Inventor 黄自翔刘铁军谢秀芬鲁纯
Owner HUNAN LINENG TECH
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