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Direct-current voltage-stabilized power supply suitable for mining multi-stage alternating-current voltage input

A DC stabilized power supply and AC voltage technology, applied in the field of power supply, can solve the problem that mining power supply cannot meet the power distribution requirements of multiple specifications at the same time, and achieve the effects of curbing inrush current, widening the input range, and improving the withstand voltage level

Pending Publication Date: 2021-07-27
TIANDI CHANGZHOU AUTOMATION +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the technical problem that the current mining power supply cannot meet the power distribution requirements of various specifications at the same time, the present invention provides a DC stabilized power supply suitable for mining multi-level AC voltage input. The combination of uncontrolled rectification circuit, slow start circuit and two-stage module converter effectively broadens the input range of DC power supply

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  • Direct-current voltage-stabilized power supply suitable for mining multi-stage alternating-current voltage input
  • Direct-current voltage-stabilized power supply suitable for mining multi-stage alternating-current voltage input
  • Direct-current voltage-stabilized power supply suitable for mining multi-stage alternating-current voltage input

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Embodiment Construction

[0032] 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 only for explaining the present invention and should not be construed as limiting the present invention.

[0033] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invent...

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Abstract

The invention discloses a mining multi-stage alternating-current voltage input direct-current stabilized power supply, which comprises an uncontrolled rectifier circuit, a slow start circuit and a direct-current output circuit, one end of the slow start circuit is electrically connected with the uncontrolled rectifier circuit, and the direct-current output circuit is electrically connected with the other end of the slow start circuit; the direct-current output circuit comprises a plurality of two-stage module converters, the input ends of the two-stage module converters are sequentially connected in series, and the output ends of the two-stage module converters are connected in parallel. By means of the technical scheme, the power supply can be suitable for any grade of voltage within the alternating-current voltage range of 75V-1400V, the input range of the direct-current power supply is effectively expanded, and different grades of power supply voltage requirements of an underground coal mine are met.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a DC stabilized power supply suitable for mining multi-level AC voltage input. Background technique [0002] There are many AC voltage levels in coal mines, and the input AC voltage levels are mainly 127 / 220 / 380 / 660 / 1140V. The lower limit of the allowable voltage fluctuation range is 75% of the voltage, and the upper limit is 110% of the voltage. Different power distribution systems in a mine In the system, there may be multiple AC voltage levels at the same time, resulting in a single power supply that cannot meet the power distribution system of multiple specifications. At this stage, most of the power supplies in underground coal mines use integrated chip-type pure flyback technology, and the input voltage can only cover the voltage specifications of 127 / 220 / 380 / 660V or 380 / 660 / 1140V, which cannot be covered in one power supply at the same time. All voltage levels, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/36H02M3/335H02M7/06H02M1/32
CPCH02M1/36H02M3/33569H02M7/06Y02B70/10
Inventor 周远谢国军赵立厂张兴华陈辉张一波刘丰祯卓敏敏杨华
Owner TIANDI CHANGZHOU AUTOMATION
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