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Three-level inverter topology and its control method, single-phase and three-phase inverter circuits

A technology of three-level inverter and topology structure, which is applied to electrical components, AC power input to DC power output, output power conversion devices, etc., can solve the problems of high cost and large number of semiconductor power switch tubes, and achieve cost reduction effect

Active Publication Date: 2022-04-19
SHENZHEN INVT ELECTRIC
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Problems solved by technology

[0003] The purpose of this application is to provide a three-level inverter topology and its control method, a single-phase inverter circuit and a three-phase inverter circuit, aiming to solve the problems of the traditional three-level inverter topology due to the problems in the circuit The number of semiconductor power switch tubes used is large, which leads to the problem of relatively high cost

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  • Three-level inverter topology and its control method, single-phase and three-phase inverter circuits
  • Three-level inverter topology and its control method, single-phase and three-phase inverter circuits
  • Three-level inverter topology and its control method, single-phase and three-phase inverter circuits

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[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application 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 application, and are not intended to limit the present application.

[0034] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and oth...

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Abstract

A three-level inverter topology and its control method, and single-phase and three-phase inverter circuits, wherein the three-level inverter topology uses a first power switch tube, a second power switch tube, and a third power switch tube, the first freewheeling branch, the second freewheeling branch and the third freewheeling branch, only three power switch tubes are needed to realize the inverter of DC, compared with the traditional three-level inverter The topology reduces a power switch tube, reduces the cost of the three-level inverter topology, and solves the problem of the traditional three-level inverter topology due to the large number of power switch tubes used in the circuit. relatively high costs.

Description

technical field [0001] The application belongs to the technical field of inverter circuits, and in particular relates to a three-level inverter topology and a control method thereof, a single-phase inverter circuit and a three-phase inverter circuit. Background technique [0002] At present, the traditional three-level inverter topology (taking single-phase as an example) is generally a T-type topology. The main working principle of the circuit is to properly select and control the on-off of at least four power semiconductor switches. Realize the process of inverting DC power to AC power. However, this circuit topology has the problem of relatively high cost due to the large number of semiconductor power switch tubes used in the circuit. Contents of the invention [0003] The purpose of this application is to provide a three-level inverter topology and its control method, a single-phase inverter circuit and a three-phase inverter circuit, aiming to solve the problems of t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/537H02M1/088
CPCH02M7/537H02M1/088
Inventor 宋晨张旭
Owner SHENZHEN INVT ELECTRIC