New energy power generation converter control power supply and converter comprising same

Abstract

The invention discloses a new energy power generation converter control power supply and a converter comprising the same. The control power supply comprises a power supply input unit, an operation transformation module, a non-isolated inverter module and a power supply output unit, wherein the operation transformation module is used for selecting and switching an input power supply, the power supply input unit, the operation transformation module and the power supply output unit are sequentially connected, the non-isolated inverter module comprises a rectifying circuit A and an inverter circuit, and the two circuits are connected in series and are respectively connected to the operation transformation module. The control power supply solves the problems of existing new energy power generation converter control power supplies adopting photovoltaic power generation, wind power generation, battery energy storage and the like, or can overcome the shortcoming of complicated control power supply scheme or short service life, and simultaneously has two functional modes.

Description

technical field [0001] The invention relates to a new energy power generation converter control power supply and a converter including the control power supply. Background technique [0002] In wind power generation and photovoltaic power generation systems, grid-connected converters are one of the key components. For control needs, the control power supply of the converter includes AC power supply, fan, contactor, etc., and should have a low-voltage DC power supply for the control circuit board and chip. The traditional converter control power supply usually takes power directly from the grid, directly connected to the components that require AC power, and at the same time, through the AC / DC conversion module, the required DC power is obtained after conversion. However, new energy power generation converters such as high-power photovoltaic power generation, wind power generation, and battery energy storage must have a low-voltage ride-through function, that is, when a very...

AI Technical Summary

Problems solved by technology

[0005] The first technical problem to be solved by the present invention is to provide a new energy power generation converter control power supply; Existing problems, or defects that can meet the requirements but the control power supply scheme itself is complicated or has insufficient service life; at the same time, the present invention can be compatible with the existing control power supply design scheme through manual operation conversion module, and has two functional modes

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