Converter used for electric propulsion of trawler

Abstract

The invention relates to a trawler propulsion technology, and in particular relates to a converter used for electric propulsion of a trawler which can be used for solving the problems of poor maneuverability, poor emergency capability, poor dynamic performance, large power loss, poor equipment selection flexibility and poor operating economy of the trawler caused by an existing diesel propulsion system. The converter used for electric propulsion of the trawler comprises a three-phase bridge type uncontrollable rectification circuit, a pre-charging circuit, a filtering circuit, a braking circuit, a discharging circuit, an inversion circuit and a detection circuit, wherein the three-phase bridge type uncontrollable rectification circuit consists of first to sixth rectification diodes, the pre-charging circuit comprises a pre-charging contactor, a pre-charging diode and a pre-charging resistor, the filtering circuit comprises a filtering inductor and a filtering capacitor, and the braking circuit comprises a braking IGBT (Insulated Gate Bipolar Translator), a braking resistor, a fuse and a buffering capacitor. The converter is applicable to the trawler.

Description

technical field [0001] The invention relates to the propulsion technology of a fishing trawler, in particular to a converter for electric propulsion of a fishing trawler. Background technique [0002] At present, the main propulsion system of fishing trawler generally adopts diesel engine propulsion system. According to the driving principle, the diesel engine propulsion system can be divided into the following two types: one is that the diesel engine is connected to the propeller through the shaft system, and the diesel engine directly drives the propeller through the shaft system. The other is to connect the diesel engine with the propeller through the reducer and the shafting, and the diesel engine indirectly drives the propeller through the reducer and the shafting. Practice has shown that the existing diesel engine propulsion system has the following problems due to its own structural limitations: First, due to the small speed ratio range of the diesel engine (the spee...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of poor maneuverability, poor emergency response ability, poor power performance, large power loss, poor equipment selection flexibility and poor operating economy of the trawler caused by the existing diesel engine propulsion system, the present invention provides A converter for electric propulsion of a fishing trawler

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