Energy control method of laser wireless power transfer system based on efficiency optimization

Abstract

The invention discloses an energy control method of a laser wireless power transmission system based on the efficiency optimization, and belongs to the technical field of laser wireless power transmission. An energy control strategy is mainly composed of an efficiency optimized control strategy and an energy management optimization strategy. In the efficiency optimized control strategy, under the premise that the output power of a photovoltaic array meets the load and storage battery power requirements, an efficiency optimized operating point of the system is searched by gradually reducing the pulse width of an input pulse current of a laser. In the energy management optimization strategy, the system efficiency and system charging power are taken as control objectives, the pulse width of an input current of the laser is further reduced to search for an optimum operating point of the system, the average output power of the laser is properly reduced in the searching process of the optimum operating point of the system to maintain the output voltage ripple of the photovoltaic array within a limited range thereof, the impact of excessive voltage ripple on the efficiency of the photovoltaic array is avoided, the rapid storage battery charging needs are thus met and meanwhile the system is allowed to operate at the efficiency optimized point.

Description

technical field [0001] The invention discloses an energy control method of a laser wireless energy transmission system based on efficiency optimization, and belongs to the technical field of laser wireless energy transmission. Background technique [0002] With the increasing popularity of electrical equipment, the traditional power supply mode based on contact conduction has problems such as poor mobility, unsafe and reliable. Especially in the system where the electrical equipment and the power supply system are relatively mobile, more additional equipment is required to meet the physical contact, which brings inconvenience to the application of electrical equipment, while wireless laser power transmission has a long transmission distance and directional Good advantages, suitable for non-contact charging of fast moving targets such as drones, tanks, and vehicles. [0003] Such as figure 1 In the laser wireless energy transmission system shown, the electric energy in the ...

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Problems solved by technology

[0007] The purpose of the present invention is to address the shortcomings of the above-mentioned background technology, and provide an energy control method based on an efficiency-optimized laser wireless power transmission system, which improves the overall conversion efficiency of the system while ensuring the power balance between the various energy sources of the system, and solves the problem of There is currently a lack of technical issues for energy management in laser wireless power transfer systems

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