Seawater pressure energy power generation system with impedance matching electric energy processing function

Abstract

The invention discloses a seawater pressure energy power generation system with an impedance matching electric energy processing function, which belongs to the technical field of marine electronics and comprises a permanent magnet linear generator, an electromagnetic reversing valve, a low-pressure cavity, a spring and a piston. The permanent magnet linear generator is internally provided with a central channel and two connecting channels which are respectively connected with an external space and a low-pressure cavity, and further comprises a stator permanent magnet and a rotor coil which surrounds part of the central channel; when the electromagnetic reversing valve is powered on, the central channel and the low-pressure cavity are communicated, the piston is pushed to be connected with the rotor coil to move towards the electromagnetic reversing valve side under the pressure difference between seawater pressure and air pressure of the low-pressure cavity, and the spring is compressed in the pushing process; during power failure, the central channel is communicated with the external space, and the piston connecting rotor coil is pushed to move away from the electromagnetic reversing valve side under the elastic force of the spring; the coil reciprocates to cut magnetic induction lines generated by the stator permanent magnet to generate power. The coil area and the piston area can be decoupled, and the energy conversion efficiency of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of marine electronics, and more particularly, relates to a seawater pressure energy power generation system with an impedance matching power processing function. Background technique [0002] Marine animal telemetry tag technology uses marine animals to carry telemetry tags to collect various environmental data and biological behavior data during their movement, and the data is transmitted in real time or quasi-real time through satellite or underwater acoustic network. For the marine animal telemetry tag technology, the battery energy of the telemetry tag is limited, and it is difficult to support the telemetry tag to observe various parameters for a long time. The pressure energy generated by the seawater pressure difference during the diving and ascent of marine animals can be used to power the telemetry tag to improve the data spatiotemporal resolution of the tag. [0003] In the existing system using s...

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Problems solved by technology

[0003] In existing systems that use seawater pressure energy to generate electricity, the area of ​​the coil affects the number of times the reciprocating motion cuts the magnetic induction lines in the system, and the coil area also affects the size of the magnetic linkage. The number of times the reciprocating motion cuts the magnetic induction lines changes with the increase of the coil area The size of the flux linkage increases with the increase of the coil area. This coupling characteristic makes it impossible to effectively improve the energy conversion efficiency of the system.

[0004] In addition, the seawater pressure energy generation system of the animal telemetry tag is the power supply end, and its impedance is generally large. The supercapacitor is small in size and low in rated voltage. Matching, the voltage change during the supercapacitor voltage charging process will cause the equivalent impedance of the power processing device to change, and will also cause an impedance mismatch between the two, resulting in energy loss, resulting in only a small part of the electric energy being transferred to the energy storage In the component, it affects the conversion efficiency of seawater pressure energy

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