Interleaved parallel buck chopper DC current source energy storage control system and its control method

Abstract

The invention relates to an interleaving buck chopper direct-current source energy storage control system and method. The system comprises a power circuit and a control circuit, and the power circuit comprises a buck circuit and a chopper circuit; the buck circuit is an industrial frequency transformer, the industrial frequency transformer comprises a primary coil and two secondary coils, the chopper circuit comprises two groups of BUCK circuits which are connected in parallel, and the two groups of BUCK circuits are connected with the two secondary coils respectively. The interleaving buck chopper direct-current source energy storage control system and method can support 260A output direct currents, are simple in circuit and convenient to control, and meanwhile have the advantages of being high in input power factor (above 0.96), low in output direct current ripple and the like.

Description

technical field

[0001] The invention relates to a control system and a control method thereof, in particular to an interleaved parallel step-down chopper DC current source energy storage control system, which belongs to the fields of plasma cutting and power electronic conversion. Background technique

[0002] The machine plasma cutting device is composed of mechanical equipment, electric control equipment, gas supply equipment, etc. The electric control equipment includes power supply system, numerical control system, cutting torch system and ECAN bus, and the power supply system includes plasma cutting power supply, arc ignition box, Air control box, cooling system, pipeline and other main parts;

[0003] Plasma cutting power supply is one of the core components of machine plasma cutting devices. According to the development history, it can include various silicon rectifier power supplies, thyristor rectifier power supplies, inverter power supplies, and chopper power suppl...

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