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DC to AC Converter

A DC/AC converter technology, applied in the field of converters, can solve problems such as large switching loss, poor efficiency, and large leakage current

Active Publication Date: 2016-02-03
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One object of the present invention is to provide a DC-AC converter, so as to improve the problem of large switching loss and poor efficiency when the inverter adopts bipolar switching, and to improve the efficiency of the inverter when using unipolar switching. The problem of large leakage current

Method used

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Embodiment Construction

[0049] In order to make the description of the present invention more detailed and complete, reference may be made to the attached drawings and various embodiments described below, and the same numbers in the drawings represent the same or similar components. However, the provided embodiments are not intended to limit the scope of the present invention, and the description of the structure and operation is not intended to limit the order of its execution. Any device recombined from components to produce devices with equivalent functions is the subject of this invention. scope covered by the invention.

[0050] The accompanying drawings are for illustration purposes only and are not drawn to original scale. On the other hand, well-known components and steps have not been described in the embodiments in order not to limit the invention unnecessarily.

[0051] figure 1 It is a schematic circuit diagram of a DC-AC converter 100 according to an embodiment of the present invention...

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Abstract

The invention provides a direct current-alternating current converter, which comprises a first switch, a second switch, a first half-bridge inverter and a second half-bridge inverter, wherein the first switch comprises a first end and a second end; the second switch comprises a first end and a second end; a direct current power supply is received between the first end of the first switch and the first end of the second switch; the first half-bridge inverter comprises a first end, a second end and an output end; the second half-bridge inverter comprises a first end, a second end and an output end; and an alternating current power supply is output between the output end of the first half-bridge inverter and the output end of the second half-bridge inverter.

Description

technical field [0001] The present invention relates to a converter, and in particular to a DC-AC converter. Background technique [0002] In recent years, due to the development of industry and commerce and the progress of society, the relatively provided products are mainly aimed at convenience, reliability, and economic benefits. Therefore, the products currently developed are more advanced than before, and can contribute to society. [0003] Applying the traditional full-bridge inverter to the non-isolated solar grid-connected system has several disadvantages in the PWM modulation mode of the full-bridge inverter: if the PWM modulation mode of the inverter adopts bipolar switching ( bipolar), there is a disadvantage of large switching loss and poor inverter efficiency; in addition, if the PWM modulation method of the inverter adopts unipolar switching (unipolar), there is a disadvantage of large leakage current. [0004] This shows that above-mentioned existing mode obv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/48H02M7/537
Inventor 顾振维李雷鸣
Owner DELTA ELECTRONICS INC