Active Clamp Based Switched Capacitor T-Source Inverter and Its Modulation Method

A switched capacitor, source inverter technology, applied in electrical components, high-efficiency power electronic conversion, output power conversion devices, etc., can solve the problems of weak boost capability, large resonant current, intermittent power supply current, etc. The effect of large boost capability, reduced loss, and continuous power supply current

Active Publication Date: 2019-06-11
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of intermittent power supply current of existing Z-source inverters, large resonant current during startup, and weak boosting capability, thereby providing a switched capacitor T-source inverter based on active clamping and modulation method

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  • Active Clamp Based Switched Capacitor T-Source Inverter and Its Modulation Method
  • Active Clamp Based Switched Capacitor T-Source Inverter and Its Modulation Method

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Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0050] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0051] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0052] Such as figure 2 As shown, the switched capacitor T-source inverter based on active clamping includes t...

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Abstract

Switched capacitor T-source inverter and modulation method based on active clamping, related to the field of inverter technology, in order to solve the existing Z-source inverter power supply current discontinuity, large resonance current and boosting capacity at startup weak problem. The negative pole of the DC power supply is connected to the primary winding L of the coupled inductor L 11 Negative pole, coupled inductor L primary winding L 11 The positive pole is connected to the secondary winding L of the coupled inductor L at the same time 12 Negative and Insulated Gate Bipolar Transistors S 2 emitter, coupled inductor L secondary winding L 12 Anode connected to diode D 2 the cathode of the diode D 2 The positive terminal of the capacitor C 1 the negative pole of the capacitor C 1 The anode of the insulated gate bipolar transistor S is connected simultaneously 2 collector, diode D 1 Negative terminal and IGBT S 1 The collector of the IGBT S 1 emitter and diode D 1 The positive pole of the battery is connected to the positive pole of the DC power supply at the same time. The invention is applicable to inverters.

Description

technical field [0001] The invention relates to the technical field of inverters, in particular to an active clamp-based switched capacitor T-source inverter and a modulation method. Background technique [0002] In recent years, the contradiction between energy supply and demand in the world has become increasingly prominent, and countries around the world are seeking new alternative energy sources. Therefore, various green energy sources such as fuel cells, photovoltaic power generation and wind power generation have been widely developed. However, the electric energy generated by these new energy sources cannot be directly fed back to the grid, and the output voltage is unstable, which is restricted by many conditions, which narrows its application range. [0003] The output voltage range of traditional inverters is limited, and the AC output voltage can only be lower than the DC bus voltage. For some occasions where the input DC voltage is not very stable, such as fuel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/487H02M7/5387H02M1/14
CPCH02M1/14H02M7/487H02M7/53875H02M7/53876Y02B70/10
Inventor 刘洪臣纪玉亮
Owner HARBIN INST OF TECH
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