Excitation control device of synchronous generator for ships

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...

AI Technical Summary

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

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