A Ship Cathodic Protection Isolated Switching Power Converter from Shore Power

Abstract

The utility model relates to a ship cathodic protection isolation switch power converter obtained from shore power, which belongs to the field of power distribution. It includes at least one flyback transformer, two main control switch tubes and two auxiliary switch tubes; it uses the secondary winding of the flyback transformer and the switch capacitor connected in series to improve the output power level of the converter; uses the primary side The series circuit composed of the auxiliary switch tube and the clamp capacitor and the series circuit composed of the auxiliary switch tube and the clamp capacitor on the secondary side can absorb and transfer most of the leakage inductance energy of the flyback transformer losslessly, and realize the two main control switch tubes zero-current turn-on; use the parasitic parallel capacitance of the two main control switch tubes to realize zero-voltage turn-off of the first and second main control switch tubes, and use the first and second main control switch tubes and the primary and secondary Reasonable matching of the auxiliary switch tubes realizes zero-voltage turn-on and zero-voltage turn-off of the two auxiliary switch tubes. It reduces the voltage and current stress of the switch tube, has high conversion efficiency, and can increase the output of the converter.

Description

technical field

[0001] The invention belongs to the field of power distribution, in particular to a marine cathodic protection isolated switching power supply converter. Background technique

[0002] Ships docked at the dock need shore power to supply energy. If the hull does not take effective anti-corrosion measures, it will lead to extremely serious galvanic corrosion.

[0003] Cathodic protection is an effective measure widely used in metal anticorrosion in seawater environment. The advantage of impressed current cathodic protection system is that it adopts automatic control, and the size of the output current can be automatically adjusted so that the surface of the protected structure is within the protection potential range. The impressed current cathodic protection system has high reliability; the output current of the cathodic protection system can be adaptively changed according to the working conditions, so that the ship's metal materials are in a better protection...

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