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Excitation control device of synchronous generator for ships

A synchronous generator and excitation control technology, which is applied to circuit devices and controls generators and electrical components through magnetic field changes. It can solve the problems of single function, high cost, inconvenience of unified and comprehensive management, and achieve accurate measurement and improve stability. Effect

Inactive Publication Date: 2010-12-22
TONGJI UNIV
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Problems solved by technology

The marine synchronous generator excitation control device composed of traditional analog circuits has many shortcomings, such as single function, low control accuracy, no external communication interface, and the use of industrial computer as the control core makes the device larger in size and higher in cost. Use a dedicated control cabinet; these are not convenient for the unified and comprehensive management of the integrated automation system of the ship power grid

Method used

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  • Excitation control device of synchronous generator for ships
  • Excitation control device of synchronous generator for ships
  • Excitation control device of synchronous generator for ships

Examples

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Effect test

Embodiment 1

[0026] Embodiment 1: The structural block diagram of the marine synchronous generator excitation control device is as follows figure 1 As shown, the device is composed of an excitation control main board 25, a man-machine interface 26, and a switching power supply 27. In addition, the device is connected to the generator, and the voltage and current analog quantities and operating status are collected from the generator side, and the control quantities are output to the generator rotor. The device has a CAN communication interface circuit, which is used to connect and communicate with the upper monitoring machine to form a comprehensive automation system for the ship power grid.

[0027] The outline structure diagram of the marine synchronous generator excitation control device is as follows: figure 2 As shown, the man-machine interface 26 includes a keyboard 15, an LCD display 16 and an LED indicator light 18, and is installed on the excitation control main board 25, and a ...

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Abstract

The invention belongs to the technical field of automation control of ships and the technical field of generator control of ship electric power systems, in particular relates to an excitation control device of a synchronous generator for ships. The device comprises an excitation control mainboard, a human-computer interface and a switching power supply, wherein the excitation control mainboard comprises a CPU main control unit, a data acquisition circuit, an A / D conversion circuit, a real-time calendar clock circuit, a watchdog circuit, a rectifying circuit, an MOSFET driving circuit, a de-excitation circuit, an on-off input circuit, a communication interface circuit and an LCD driving circuit; and the human-computer interface comprises keys, an LCD display and an LED indicating lamp. The invention has the advantages of flexible and convenient installation and use, high measuring accuracy, high execution speed and stable operation, and has the functions of monitoring and controlling the terminal voltage of the synchronous generator in real time, regulating the allocation of the reactive power of the synchronous generator in real time and improving the stability of parallel operation of the synchronous generator. The human-computer interface is abundant, and a CAN communication interface and an upper computer are used for exchanging data. The invention is designed according to the standards of a ship power station and can be widely applied to an automatic control system of a generator set in the ship power station.

Description

technical field [0001] The invention belongs to the technical field of marine automatic control and the technical field of marine power system generator control, and in particular relates to a marine synchronous generator excitation control device, which can be applied to the automatic control system of a generator set in a marine power station. Background technique [0002] The ship power system is an independent power grid. Generally, there is only one power station on a ship, and the capacity of the power station is the capacity of the power grid. Due to the limited capacity of the power grid and the frequent start and stop of the load on the ship, the voltage fluctuation of the ship power grid is more serious than that of the large land power grid. Maintaining the generator voltage stability through the excitation control device has an important role and influence on the reliable and stable operation of the ship power grid. The marine synchronous generator excitation co...

Claims

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Application Information

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IPC IPC(8): H02P9/14H02J3/18H02J13/00
CPCY02E40/32Y02E40/30
Inventor 牟龙华郭宏周伟
Owner TONGJI UNIV
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