Multi-stage current double field-induced electricity taking device

Abstract

The invention discloses a field-induced electricity taking device, wherein a single-stage current double circuit is replaced with a multi-stage current double circuit; compared with the single-stage current double circuit in the prior art, the multi-stage current double circuit is greatly lower in the number of electronic components used for completing the same step-down ratio, can save a lot of circuit components, and can reduce the size of the circuit.

Description

technical field [0001] The invention relates to a power supply system for high-voltage equipment. Background technique [0002] The power supply of existing high-voltage equipment is mostly supplied by mains power supply, with its own power supply and induction power supply; the mains power supply is mostly used to supply power to large-scale equipment with high power consumption, and it is necessary to set up a separate power supply line, which is often inconvenient to use; The self-contained power supply is usually powered by batteries, or a combination of secondary batteries and solar or wind power generation. Pure battery power requires regular replacement of batteries. Primary and secondary batteries have the risk of leakage and explosion at high temperatures. Substances leaked from batteries It is conductive, which is very dangerous to the high-voltage power system; the induction power intake method directly absorbs power from the high-voltage power supply line, which ...

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Problems solved by technology

[0002] The power supply of existing high-voltage equipment is mostly supplied by mains power supply, with its own power supply and induction power supply; the mains power supply is mostly used to supply power to large-scale equipment with high power consumption, and it is necessary to set up a separate power supply line, which is often inconvenient to use; The self-contained power supply is usually powered by batteries, or a combination of secondary batteries and solar or wind power generation. Pure battery power requires regular replacement of batteries. Primary and secondary batteries have the risk of leakage and explosion at high temperatures. Substances leaked from batteries It is conductive, which is very dangerous to the high-voltage power system; the induction power intake method directly absorbs power from the high-voltage power supply line, which is specifically divided into two types: current induction power acquisition and electric field induction power acquisition. Current induction power acquisition uses the current transformer principle , absorbing electric energy from the magnetic field, the current in the high-voltage power supply line is unstable, and the electric energy obtained when the current is small is also small. When the current is large, there is a problem of overheating the magnetic core, and the electric energy obtained is very unstable; The loop current of the scattered capacitance of the sensing electrode is the input current, which is characterized by high voltage and low current value. The open circuit voltage is equal to the voltage of the high voltage line. The voltage of the power supply line is related to the shape of the induction electrode, and the existing electric field induction power-taking device passes the double current (such as figure 1 ) to step down and increase the input current, and the step-down ratio is equal to the number of nodes in the circuit (such as figure 1 In 4, there is a circuit in the box), to reduce the voltage of thousands of volts to the voltage of several volts of ordinary semiconductor components, you need thousands of such circuits, which is difficult to implement. In fact, the number of nodes in the circuit Generally no more than 8 nodes, the voltage difference between the high-voltage power supply line and the induction electrode does not exceed 100V, so that the power obtained is very little; but the voltage of the high-voltage line is stable, and the power obtained by this method is very stable

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