High Gain Boost DC Converter for Fuel Cell Power Generation

A technology of DC converter and fuel cell, which is applied in the direction of converting DC power input to DC power output, adjusting electrical variables, and output power conversion devices, which can solve the problems of large input current ripple and achieve low output current ripple , Extended service life, high voltage gain effect

Active Publication Date: 2020-09-25
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the coupled inductor type high gain converter, the input current ripple is relatively large because the primary current of the coupled inductor is different when the switch tube is turned on and off.

Method used

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  • High Gain Boost DC Converter for Fuel Cell Power Generation
  • High Gain Boost DC Converter for Fuel Cell Power Generation
  • High Gain Boost DC Converter for Fuel Cell Power Generation

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Embodiment Construction

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0034] A high-gain step-up DC converter for power generation by a fuel cell according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0035] figure 1 It is a schematic structural diagram of a high-gain step-up DC converter circuit for fuel cell power generation according to an embodiment of the present invention.

[0036] like figure 1 As shown, the high-gain step-up DC converter for fuel cell power generation includes: input power V in , the first switch tube S ...

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Abstract

The invention discloses a high-gain boost DC converter for fuel cell power generation. The high-gain boost DC converter comprises an input power source Vin, wherein the positive pole of the input power source Vin is connected with an inductor L1; the inductor L1 connected with the drain of a switch S1 and a capacitor C1; the capacitor C1 connected with the anode of a diode D1, a capacitor C2 and an inductor L2; the inductor L2 connected with a load RL and a capacitor C4; the capacitor C2 connected with the cathode of a diode D2 and the anode of a diode D3; and the diode D3 having the cathode connected with the load RL and the capacitor C3, wherein the negative pole of the input power source Vin is connected with the source of the switch tube S1, the cathode of the diode D1, the anode of the diode D2, the capacitor C3 and the capacitor C4. The high-gain boost DC converter for fuel cell power generation has high voltage gain, low device voltage stress and low input and low output currentripples, is suitable for the field of fuel cell power generation, and can prolong the service life of the full cell while improving the low-voltage direct current of the fuel cell.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a high-gain step-up DC converter for fuel cell power generation. Background technique [0002] Traditional fossil energy power generation technology will bring serious environmental pollution problems. Therefore, in order to protect the environment and achieve sustainable energy development, fuel cell power generation has received extensive attention. Fuel cell power generation has the characteristics of high efficiency, low pollution, and high safety. , but because the output voltage of the fuel cell is relatively low, generally between 20 and 60V, if the fuel cell is connected to the grid for power generation, a converter with a higher voltage gain is required to increase the DC voltage to meet the DC bus voltage of the subsequent inverter requirements. [0003] In related technologies, traditional Boost, Buck-Boost, Cuk, Sepic, Zeta and other converters with step-up...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/155H02M1/14
Inventor 李虹曾洋斌王文财
Owner BEIJING JIAOTONG UNIV
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