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Inverter circuit and driving method thereof, and multi-phase inverter circuit and inverter

A technology of an inverter circuit and a driving method, which is applied to electrical components, a conversion device that converts AC power input into DC power output, and output power, etc. The effect of simple circuit structure

Active Publication Date: 2021-11-26
SHENZHEN POWEROAK NEWENER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the resonant pole type soft-switching inverter in the prior art, more auxiliary switches and transformers need to be installed in the inverter, which will not only make the circuit complicated, but also lead to inverse The cost of the transformer increases

Method used

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  • Inverter circuit and driving method thereof, and multi-phase inverter circuit and inverter
  • Inverter circuit and driving method thereof, and multi-phase inverter circuit and inverter
  • Inverter circuit and driving method thereof, and multi-phase inverter circuit and inverter

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Embodiment Construction

[0053] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0054] Please refer to figure 1 , figure 1 It is a schematic structural diagram of the inverter circuit provided by the embodiment of the present application. Such as figure 1 As shown, the inverter circuit 100 includes a first switch 10 , a freewheeling unit 20 , a resonance unit 30 , a bridge arm unit 40 and a control unit 50 . Wherein, the first end of...

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Abstract

The present application discloses an inverter circuit and its driving method, as well as a multi-phase inverter circuit and an inverter. The inverter circuit includes a first switch, a freewheeling unit, a resonant unit, a bridge arm unit and a control unit. The first The switches are respectively connected to the midpoint of the DC power supply and the freewheeling unit, the resonant unit is respectively connected to the midpoint of the freewheeling unit and the midpoint of the bridge arm unit, the midpoint of the bridge arm unit is also used to connect to the load, and the freewheeling unit is connected to the midpoint of the bridge arm unit. The bridge arm units are connected in parallel, and are all connected to the DC power supply. The control unit is respectively connected to the first switch and the control end of the bridge arm unit. The control unit is used to control the switching state of the first switch and to control the inverter in the bridge arm unit. Change the switching state of the switch to convert the direct current of the direct current power supply into alternating current, and the alternating current is output at the midpoint of the bridge arm unit. Through the above method, the inverter function can be realized through a relatively simple circuit, and the cost is low.

Description

technical field [0001] The present application relates to the technical field of power electronics, in particular to an inverter circuit and its driving method, as well as a multi-phase inverter circuit and an inverter. Background technique [0002] The development of industrialization has higher and higher requirements on the size, cost, operating frequency and efficiency of power electronic devices. The pursuit of high frequency, high efficiency, low cost and miniaturization of power electronic devices has become a development concept. When working at high frequency, the hard-switching inverter will not only produce serious switching loss, but also be accompanied by serious noise pollution and electromagnetic interference. For this reason, soft-switching technology was born and applied to hard-switching inverters. The soft-switching inverter refers to adding an auxiliary resonant circuit to the hard-switching inverter, using the resonance effect of the inductance and cap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/537H02M7/5387H02M1/088
CPCH02M7/537H02M7/53871H02M1/088H02M1/083Y02B70/10
Inventor 雷健华唐朝垠马辉秦赓尹相柱
Owner SHENZHEN POWEROAK NEWENER
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