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Soft-switching DC/DC converter with high step-up ratio based on magnetic integration

A high boost ratio, converter technology, used in high-efficiency power electronic conversion, output power conversion devices, conversion of DC power input to DC power output, etc., can solve problems such as serious converter loss, and achieve stable circuit structure. The effect of reducing system volume and strong anti-interference ability

Inactive Publication Date: 2020-01-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem of severe loss in existing converters, the present invention provides a soft-switching DC / DC converter with a high boost ratio based on magnetic integration. The present invention provides the following technical solutions:

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  • Soft-switching DC/DC converter with high step-up ratio based on magnetic integration
  • Soft-switching DC/DC converter with high step-up ratio based on magnetic integration
  • Soft-switching DC/DC converter with high step-up ratio based on magnetic integration

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specific Embodiment 1

[0030] according to figure 1 As shown, the present invention provides a high boost ratio soft switching DC / DC converter based on magnetic integration, a high boost ratio soft switching DC / DC converter based on magnetic integration, including a sampling circuit, a control chip, a drive Circuit, voltage doubler unit I, voltage doubler unit II, voltage source V in , inductance L 1 , capacitance C s1 , switch tube Q 1 , Diode D P , capacitance C P , transformer T, capacitor C s2 , Diode D M2 , Diode D o , output capacitance C o and the load resistance R, the transformer T includes the primary inductance L 3p and the secondary inductance L 3s ;

[0031] The voltage doubler unit II includes a switching tube Q 2 , capacitance C Q , inductance L 2 and diode D Q , diode D Q and capacitance C Q in parallel with the switch Q 2 Both ends; the voltage doubler unit I includes a diode D M1 and capacitance C M ;

[0032] The voltage source V in The positive connection of...

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Abstract

The invention is a soft-switching DC / DC converter with a high step-up ratio based on magnetic integration. The soft-switching DC / DC converter comprises a sampling circuit, a control chip, a driving circuit, a voltage-multiplying unit I, a voltage-multiplying unit II, a voltage source Vin, an inductor L1, a capacitor Cs1, a switching transistor Z1, a diode DP, a capacitor CP, a transformer T, a capacitor Cs2, and a diode DM2, a diode Do, an output capacitor Co, and a load resistor R. The transformer T includes a primary-side inductor L3p and a secondary-side inductor L3s. The soft-switching DC / DC converter uses magnetic integration technology and integrates the inductors L1 and L2 into a planar E-type magnetic core, thereby effectively reducing the system volume and increasing the power density. The soft-switching DC / DC converter satisfies the requirement that a photovoltaic cell outputs 36V grid-connected DC bus voltage of 380V, has stable circuit structure and a good anti-interferencecapability, and guarantees constant-voltage output.

Description

technical field [0001] The invention relates to the technical field of DC / DC converters, and relates to a soft-switching DC / DC converter with high boost ratio based on magnetic integration. Background technique [0002] With the development and progress of the global economy, energy issues have become the lifeblood of every country's development. The pollution problems caused by traditional fossil energy and the depletion of non-renewable resources on the earth have put forward severe requirements for the development of new green renewable energy. Due to their wide range of sources and the advantages of no pollution, wind power and solar energy occupy an increasing proportion in the current power generation system. At present, there are mainly the following difficulties in the grid-connection process of photovoltaic power generation: [0003] 1. The output voltage of conventional photovoltaic cells (PV) is only 12-40V, and the DC bus voltage required for grid connection ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02J3/38
CPCH02M3/33523H02M1/0058Y02B70/10Y02E10/56Y02A30/60
Inventor 王懿杰高珊珊刘怡宁管乐诗姚友素张相军徐殿国
Owner HARBIN INST OF TECH
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