DCDC photovoltaic hydrogen production DC power supply

Abstract

The utility model discloses a DCDC photovoltaic hydrogen production DC power supply, which comprises a main system and a plurality of subsystems connected in parallel on the main system, and the output end of each subsystem is connected with an IGBT inversion soft switching rectification module. And the IGBT inversion soft switching rectification module comprises an IGBT inversion switch unit, a high-frequency rectification transformer, a fast recovery diode full-wave rectification unit, a direct current filter reactor and a direct current filter capacitor which are connected in sequence. According to the utility model, the subsystem adopts a modular design, and the power of a single module is 60kW; a plurality of modules are operated in parallel, and the output requirement of the system is met through a master-slave system mode. Rated voltage and current are reduced through the IGBT inversion soft switching rectification module, and the conversion efficiency of the power supply is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power supplies, and in particular relates to a DCDC photovoltaic hydrogen production direct current power supply. Background Art

[0002] Photovoltaic hydrogen production DC power supply is a power supply solution designed for photovoltaic hydrogen production system. Its working principle is mainly to use photovoltaic panels to convert solar energy into DC power. At present, photovoltaic hydrogen production DC power supply is composed of a master-slave system, and its slave system is composed of multiple modules running in parallel, resulting in a large rated current, high rated voltage and low power conversion efficiency of the DC-DC hydrogen production power supply. Summary of the invention

[0003] The utility model aims to provide a DCDC photovoltaic hydrogen production DC power supply, which adds an IGBT inverter soft switch rectifier module to the existing photovoltaic hydrogen production DC power supply to reduce its rated current and voltage.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A DCDC photovoltaic hydrogen production DC power supply comprises a main system and a plurality of subsystems connected in parallel to the main system, wherein an IGBT inverter soft switch rectifier module is connected to the output end of each subsystem; the IGBT inverter soft switch rectifier module comprises an IGBT inverter switch unit, a high-frequency rectifier transformer, a fast recovery diode full-wave rectifier unit, a DC filter reactor, and a DC filter capacitor connected in sequence.

[0006] Furthermore, the subsystem is cooled by a full water cooling structure.

[0007] The subsystem of this utility model adopts modular design, with a single module power of 60kW; multiple modules are operated in parallel, and then the output requirements of the system are met through the master-slave system mode. The rated voltage and current are reduced through the IGBT inverter soft switch rectifier module to improve the conversion efficiency of the power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the circuit structure of the utility model.

[0009] Figure 2 It is a structural schematic diagram of the IGBT inverter soft switch rectifier module of the utility model. DETAILED DESCRIPTION

[0010] like Figure 1 , Figure 2As shown, a DCDC photovoltaic hydrogen production DC power supply provided in this embodiment includes multiple subsystems connected in parallel, all of which are connected to the main system, and each subsystem output end is connected to an IGBT inverter soft switch rectifier module; the IGBT inverter soft switch rectifier module includes an IGBT inverter switch unit, a high-frequency rectifier transformer, a fast recovery diode full-wave rectifier unit, a DC filter reactor, and a DC filter capacitor connected in sequence. The module has high integration and strong processability, reduces the failure rate of the high-frequency transformer, and has an integrated structure to reduce the interference of the high-frequency transformer to other electronic devices.

[0011] The subsystem is cooled by a full water cooling structure to reduce internal heat generation and lower the internal temperature of the module.

[0012] The above is only a preferred implementation of the utility model, but the protection scope of the utility model is not limited thereto, and any modification and replacement based on the technical solution and utility model concept provided by the utility model should be included in the protection scope of the utility model.

Claims

1. A DCDC photovoltaic hydrogen production DC power supply, comprising a main system and a plurality of subsystems connected in parallel to the main system, characterized in that: The output end of each subsystem is connected to an IGBT inverter soft switch rectifier module; the IGBT inverter soft switch rectifier module includes an IGBT inverter switch unit, a high-frequency rectifier transformer, a fast recovery diode full-wave rectifier unit, a DC filter reactor, and a DC filter capacitor connected in sequence.

2. A DCDC photovoltaic hydrogen production direct current power supply according to claim 1, characterized in that: The subsystem is cooled by a full water cooling structure.

Images