Inductive energy-obtaining device

Abstract

The invention discloses an inductive energy-obtaining device, and the device comprises a housing. The interior of the housing is provided with an inductive energy-obtaining module and a circuit board. The inductive energy-obtaining module comprises an energy-obtaining iron core, an energy-obtaining coil, and a compensation coil. The energy-obtaining coil sleeves a bus of a power distribution cabinet, and the energy-obtaining coil and the compensation coil are disposed on the energy-obtaining iron core in a winding manner. The circuit board is provided with a control module, an overvoltage protection module, a rectification filtering module, a DC-DC module and a voltage-stabilizing module, wherein the overvoltage protection module, the rectification filtering module, the DC-DC module and the voltage-stabilizing module are sequentially connected with the control module. The overvoltage protection module is connected with the inductive energy-obtaining module. The housing is also provided with a through hole for the passing of the bus of the power distribution cabinet. The device can change the connection mode of the energy-obtaining coil and the compensation coil through the control module, enables the inductive energy-obtaining module to be in different energy-obtaining modes, can inhibit the change of magnetic flux, can effectively inhibit the saturation of the energy-obtaining iron core, stabilizes the voltage rectified by the rectification filtering module, and solves a problem that the fluctuation range of a primary side current is large.

Description

technical field [0001] The invention mainly relates to the technical field of electric power, in particular to an induction energy harvesting device. Background technique [0002] In the intelligent power distribution cabinet, physical quantities such as voltage quality, voltage, current, equipment operating temperature, ambient temperature and humidity, and switch status need to be monitored to ensure the reliability of power supply. In order to supply power to the monitoring sensors working in the distribution cabinet, it is necessary to develop a long-term stable and reliable power supply. There are generally four ways to realize the power supply for such purposes: battery, photovoltaic-battery power supply, laser power supply and induction energy harvesting power supply. Battery replacement is inconvenient and continuity cannot be guaranteed. Photovoltaic power supply cannot work in places where there is no sunlight or insufficient sunlight intensity. Laser power supply...

AI Technical Summary

Problems solved by technology

[0003] However, the existing inductive energy harvesting devices have the problems of large fluctuation range of the primary side current and deep saturation of the energy harvesting magnetic core when the current is high.

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