Capacitance voltage division type direct current voltage reduction technology

A technology of DC step-down and capacitive voltage division, which is applied in the direction of conversion equipment without intermediate conversion to AC

Inactive Publication Date: 2014-09-17
张雪原 +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, reducing volume and improving efficiency are contradictions that are difficult to reconcile in current DC step-down circuits.

Method used

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  • Capacitance voltage division type direct current voltage reduction technology
  • Capacitance voltage division type direct current voltage reduction technology

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Experimental program
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Embodiment Construction

[0045] figure 2 The invention is further described as a specific implementation manner of the capacitive voltage-dividing DC step-down technology. It should be noted, figure 2 It is only one of the specific implementation modes, and the present invention also has other specific implementation modes.

[0046] exist figure 2 In, use IGBT to form a switch group to realize figure 1 The function of the switch K in the switch, and the control and drive of the IGBT are constructed using corresponding hardware and software as required.

[0047] exist figure 2 , the power supplies power to the capacitor C6 and the series capacitor branch through the rectifier circuit. When the series capacitor branch is fully charged, the switches of the switch group are turned on and off in sequence through the control signal, so that each capacitor in the series capacitor branch discharges the low voltage circuit in turn, thereby realizing the power from the high voltage side to the low vol...

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Abstract

The invention belongs to the technical field of electrical engineering and the automatization and relates to a direct current voltage reduction technology. The capacitance voltage division type direct current voltage reduction technology is that voltage division is performed on direct current on the high-voltage side through series capacitors, a switch is sequentially connected with two ends of one or more capacitors in the series capacitors, electric charges of the capacitors are transferred to an energy storage element at the output end, and output voltage on the low-voltage side can be controlled by regulating the on-off speed of the switch. The energy storage inductance of a direct current voltage reduction circuit can be decreased, and technical support is provided for miniaturization of a direct current voltage reduction device.

Description

technical field [0001] The invention relates to a direct current step-down technology. Capacitor divider type DC step-down technology is to divide the DC voltage on the high-voltage side through series capacitors, and use switches to connect one or more capacitors in the series capacitors in turn, so that the charges of the capacitors are transferred to the energy storage elements at the output end, and the adjustment The on-off speed of the switch can control the output voltage of the low-voltage side; the invention can reduce the energy storage inductance of the DC step-down circuit and provide technical support for the miniaturization of the DC step-down device. The invention belongs to the technical field of electrical engineering and automation thereof. Background technique [0002] DC step-down has a wide range of applications in industrial production. In the current DC step-down circuit, there are mainly basic structures such as Buck circuit, Cuk circuit, Sepic circ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/06H02M3/07
Inventor 张雪原张婷蒋秀洁张江林何西凤王万岗
Owner 张雪原
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