Coupling inductance ZVS/ZCS double tube direct current converter with charge pump

A DC converter, coupled inductance technology, applied in the direction of DC power input conversion to DC power output, high-efficiency power electronic conversion, conversion equipment without intermediate conversion to AC, etc. The ratio becomes larger, the diode voltage stress is large, etc., to solve the reverse recovery problem, the switching loss is small, and the voltage stress is low.

Inactive Publication Date: 2014-03-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The boosting capability of the traditional Boost converter is very limited. As the gain increases, the duty cycle gradually increases, the inductor current ripple increases, and the required inductance also increases; and when applied to high output voltage applications, the power The voltage stre

Method used

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  • Coupling inductance ZVS/ZCS double tube direct current converter with charge pump
  • Coupling inductance ZVS/ZCS double tube direct current converter with charge pump
  • Coupling inductance ZVS/ZCS double tube direct current converter with charge pump

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Example Embodiment

[0024] The technical scheme of the invention will be described in detail below in conjunction with the drawings:

[0025] Such as figure 1 As shown, the coupled inductor ZVS / ZCS dual-tube DC converter with charge pump includes a DC power supply, a first boost circuit, a second boost circuit, a first charge pump boost unit, and a second charge pump boost unit , Switching circuit and load; the voltage output by the DC power supply is divided into two outputs, one of which is initially boosted by the first booster circuit and then input to the first charge pump booster unit, and then passed through the first charge pump booster unit twice After boosting, it is input to one end of the load through the switch circuit; the other is initially boosted by the second boost circuit and then input to the second charge pump boost unit; after the second charge pump boost unit is boosted, it is input to the load At the other end, an output filter capacitor is connected in parallel at both e...

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PUM

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Abstract

The invention relates to a coupling inductance ZVS/ZCS double tube direct current converter with a charge pump. The coupling inductance ZVS/ZCS double tube direct current converter with the charge pump comprises a direct-current power source, a first boosting circuit, a second boosting circuit, a first charge pump boosting unit, a second charge pump boosting unit, a switch circuit and a load, wherein an output voltage of the direct-current power source is output through two paths, one path of the output voltage is input into the first charge pump boosting unit after undergoing primary boosting of the first boosting circuit and input to one end of the load through the switch circuit after undergoing secondary boosting of the first charge pump boosting unit, and the other path of the output voltage is input to the second charge pump boosting unit after undergoing primary boosting of the second boosting circuit and input to the other end of the load after undergoing secondary boosting of the second charge pump boosting unit. The circuits are small in size and high in conversion efficiency, voltage stress of power switch tubes is low, current stress of the power switch tubes is small, and conduction loss of the power switch tubes is small; zero voltage switching can be achieved, and switching loss is small; all power diodes can be switched off naturally with zero current, the reverse recovery problem does not exist, and EMI of the circuits is small.

Description

technical field [0001] The invention relates to a coupled inductance ZVS / ZCS double-tube DC converter with a charge pump, belonging to the field of power electronic converters. Background technique [0002] Under the dual pressure of energy shortage and environmental problems, new energy power generation has received extensive attention and research because of its cleanliness. In order to integrate a single photovoltaic cell and fuel cell into the grid, it is necessary to use a high-gain, high-efficiency DC converter to greatly improve the DC power generation. Voltage level. The boosting capability of the traditional Boost converter is very limited. As the gain increases, the duty cycle gradually increases, the inductor current ripple increases, and the required inductance also increases; and when applied to high output voltage applications, the power The voltage stress and current stress of the switch tube are large, and the conduction loss of the switch tube is large; the...

Claims

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Application Information

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IPC IPC(8): H02M3/07H02M3/156
CPCY02B70/1491Y02B70/10
Inventor 汤雨王挺
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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