Three-port single-phase single-pole micro current converter and operating method thereof

A converter, unipolar technology, applied in the direction of converting AC power input to DC power output, high-efficiency power electronic conversion, output power conversion device, etc., can solve the problem of short life, low reliability, high value electrolytic capacitor Volume and other issues

Inactive Publication Date: 2014-12-10
DARFON ELECTRONICS (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, high-capacity electrolytic capacitors have disadvantages such as large volume, short life and low reliability.

Method used

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  • Three-port single-phase single-pole micro current converter and operating method thereof
  • Three-port single-phase single-pole micro current converter and operating method thereof
  • Three-port single-phase single-pole micro current converter and operating method thereof

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Embodiment Construction

[0076] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

[0077] Please refer to figure 1 , figure 1 A schematic diagram of a three-port single-phase single-pole micro-inverter 100 is illustrated for an embodiment of the present invention. The three-port single-phase unipolar micro-inverter 100 includes an input port 102 , a modulation port 104 , a phase converter 106 and an Active Power Decoupling Circuit (APDC) port 108 . The input port 102 is used for coupling to the DC power source 110 and receiving and transmitting the input power PDC of the DC power source 110 , wherein the DC power source can be a solar panel, and the input port 102 has a maximum power point tracking function. However, the present invention is not limited to the direct current power source being a solar panel. The modulation port 104 is used to mag...

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Abstract

The invention provides a three-port single-phase single-pole micro current converter comprising an input port, a modulating port, a phase converter and an active power decoupling circuit port, wherein the input port is coupled with a direct current power supply and is used for receiving and transmitting the input power of the direct current power supply, the modulating port is magnetically coupled with the input port and is used for generating and outputting a full-wave rectified string wave current according to the input power, the phase converter is coupled with the modulating port and is used for converting the string wave current into an alternating current according to a switch control signal and an inverse-phase switch control signal and outputting the alternating current to an electric supply, wherein the frequencies of the switch control signal and the inverse-phase switch control signal are same as the frequency of the electric supply; the input port receives and transmits the input power of the direct current power supply, then the modulating port and the active power decoupling circuit port perform corresponding actions respectively according to a first pulse width modulation control signal and according to a second pulse width modulation control signal or a third pulse width modulation control signal. The current converter has the following characteristics of small size and high reliability.

Description

technical field [0001] The invention relates to a three-port single-phase single-pole micro-converter and its operating method, especially a three-port single-phase single-pole micro-converter with the advantages of smaller volume, longer life and higher reliability. Streamers and their method of operation. Background technique [0002] Generally speaking, the input port of the micro-inverter must have the function of maximum power point tracking (MPPT) to draw the maximum power (maximum power point, MPP) of the solar panel. After the input port of the micro-inverter absorbs the energy of the solar panel, the modulation port of the micro-inverter will output a full-wave rectified sine wave current. Then, the low-frequency switching commutator converts the full-wave rectified sinusoidal current into AC current and transmits it to the mains. In the prior art, the micro-inverter uses a high-capacity electrolytic capacitor to balance the input power of the solar panel and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/537
CPCY02B70/10
Inventor 陈耀铭廖建尧周政彦相理古孝治
Owner DARFON ELECTRONICS (SUZHOU) CO LTD
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