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Multi-input source energy extraction system and its power conversion device and method

A technology for power conversion and input power, which is applied to output power conversion devices, high-efficiency power electronic conversion, electrical components, etc., and can solve the problems of large circuit size and high cost of power conversion systems

Active Publication Date: 2022-03-29
RICHTEK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] figure 2 The disadvantage of the prior art shown in is that the circuit size of the power conversion system 2 is large and the cost is high due to the setting of respective maximum power point tracking circuits
In addition, when selecting the input source with a diode, only the highest voltage among the input power sources can be selected.

Method used

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  • Multi-input source energy extraction system and its power conversion device and method
  • Multi-input source energy extraction system and its power conversion device and method
  • Multi-input source energy extraction system and its power conversion device and method

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Embodiment Construction

[0087] The drawings in the present invention are all schematic diagrams, mainly intended to show the coupling relationship between various circuits and the relationship between various signal waveforms. As for the circuits, signal waveforms and frequencies, they are not drawn to scale.

[0088] see Figure 3A , Figure 3A A schematic diagram showing an embodiment of the multi-input source energy extraction system and its power conversion device of the present invention (multi-input source energy extraction system 3A and power conversion device 100 ). The multi-input source energy extraction system 3A includes a plurality of energy extractors 200 and 300 , and a power conversion device 100 .

[0089] The energy extractors 200 and 300 are respectively used to extract the corresponding forms of the first energy and the second energy and convert them into the first input power VI1 and the second input power VI2 respectively. In one embodiment, the energy extractor 200 can extrac...

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Abstract

A multi-input source energy extraction system and its power conversion device and method. The multi-input source energy extraction system includes a power conversion device, wherein the first and second energy extractors respectively extract the first and second energy and provide the first and second input power respectively; the power conversion device includes: adjustable The impedance matching circuit generates an adjusted power supply according to the first input power supply; the power conversion circuit converts the bus power supply to generate an output power supply; wherein the energy extraction system controls the first switching circuit and the second power supply according to the adjusted power supply and / or the second input power supply The second switch circuit is used to selectively turn on one of the adjusted power supply or the second input power supply to generate bus power; and adjust the impedance value of the adjustable impedance matching circuit to maximize the voltage of the adjusted power supply.

Description

technical field [0001] The invention relates to a power conversion system, in particular to a power conversion system with multiple input sources. The invention also relates to a power conversion device and method used in a power conversion system. Background technique [0002] The previous documents related to this application include: US Patent Application US 20180069405A1 and "An Effective Multi-Source Energy Harvester for Low Power Applications, 2011, IEEE". [0003] figure 1 Among them, the US patent application US 20180069405A1 discloses a prior art power conversion system with multiple input sources (power conversion system 1 with multiple input sources). The power conversion system 1 includes a plurality of DC-DC boost converters, respectively It is used to convert the energy provided by different energy extractors (such as solar panel energy extractor, piezoelectric panel energy extractor, wind energy extractor, magnetic induction energy extractor and radio freque...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/10H02M1/00
CPCH02M1/10H02M1/00Y02B70/10
Inventor 刘国基何昌祐
Owner RICHTEK TECH