Novel Z source welding power source system

A welding power source, a new type of technology, applied in electrical components, output power conversion devices, AC power input conversion to AC power output and other directions, can solve problems such as system collapse, poor anti-EMI noise, damage to components, etc. The effect of enhancing the ability to resist EMI noise

Inactive Publication Date: 2011-07-27
佛山金皇宇企业孵化器有限公司
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Problems solved by technology

Whether it is because of the poor anti-EMI noise of the system itself, or when the upper and lower power switching devices are directly connec

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  • Novel Z source welding power source system
  • Novel Z source welding power source system
  • Novel Z source welding power source system

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] Such as figure 1 As shown, the new Z source welding power supply system consists of three parts: main circuit, power main control and interface circuit board, and IGBT driver board. The main circuit is composed of input rectifier module, input filter module, Z source network, IGBT inverter module, high frequency transformer, output rectifier module and output filter module connected in sequence, the input rectifier module is connected with the three-phase AC power supply, the output filter module is connected with the load Connection; the basic power supply circuit of the main circuit board...

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Abstract

The invention relates to the technical field of welding power sources, and in particular relates to a novel Z source welding power source system. The novel Z source welding power source system comprises a main circuit, a power supply main control and man-machine interface board and an IGBT (insulated gate bipolar transistor) driving circuit, wherein the IGBT driving circuit is respectively connected with the main circuit and the power supply main control and man-machine interface board, and the main circuit comprises a Z source network. The invention has the beneficial effects that the influence of dead zone effect to an inverter can be eliminated, the resistance of a welding machine to EMI (electromagnetic interference) noise can be enhanced, and the welding machine can not be damaged owning to false triggering of an inverter bridge leg.

Description

technical field [0001] The invention relates to the technical field of welding power sources, in particular to a novel Z-source welding power source system. Background technique [0002] At present, the main circuit of the inverter welding power supply in our country mostly adopts a simple full-bridge inverter topology main circuit structure, which belongs to the voltage source inverter. This inverter is a step-down inverter, and the input DC voltage Output AC voltage, depending on the application, the amplitude or frequency of the output voltage can be constant. The application of voltage source inverter in inverter welding power supply is quite extensive, but there are conceptual and theoretical deficiencies and limitations; its AC load can only be inductive or must be connected in series with reactors to ensure that the voltage source inverter able to work. In addition, the upper and lower power switching devices of each bridge arm of this voltage source inverter cannot...

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Application Information

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IPC IPC(8): H02M5/458
Inventor 周俊伍
Owner 佛山金皇宇企业孵化器有限公司
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