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Method and system for realizing isolated power supply by light energy

A technology of isolated power supply and light energy, applied in photovoltaic power generation, photovoltaic power stations, light radiation generators, etc., can solve problems such as damage, discharge along the surface, damage to electrical equipment, etc., and achieve the effect of avoiding impact and eliminating electromagnetic interference

Inactive Publication Date: 2013-03-27
秦皇岛博硕光电设备股份有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

Use an isolation transformer for isolated power supply. When a high-potential platform is ignited under high voltage, a pulse current will be generated in the primary side of the isolation transformer. In severe cases, it will cause damage to electrical equipment on the ground potential.
Using generators for isolated power supply, because it involves many mechanical moving parts, has the disadvantages of complex structure of the power supply system, difficulty in using when the potential of the high-potential platform is high, and low reliability
Using the above two methods for isolated power supply, since there is a physical connection between the high-potential platform and the ground potential, it may cause high-voltage breakdown and discharge along the surface. In addition, the interference of the power grid and the high-potential platform may also be coupled to each other and affect each other. , may cause ground potential equipment or equipment on high potential platforms to malfunction or be damaged

Method used

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  • Method and system for realizing isolated power supply by light energy

Examples

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Embodiment

[0027] Assume that the grid voltage at the ground potential is 220V, and the power consumption facility that needs to be isolated for power supply is a DC steady-current power supply with a current of 10A and a voltage of 15V.

[0028] Then, the irradiation light source 1 can choose four metal halide lamps with a power of 1kW and a concentrator, which can directly provide 2kW light energy to the solar panel; the area of ​​the solar panel 3 is 1 square meter, and its conversion efficiency is 15%, its output voltage is DC 12V; the storage device 4 can choose a lithium battery with a voltage of 12V and a storage capacity of 30Ah; the inverter device 5 can choose an inverter with a capacity of 200VA, and its output frequency is S0Hz. The voltage is AC 220V;

[0029] The following specific circuit structure is used to supply power to the electrical facilities: four 1kW metal halide lamps with spotlights are set at the ground potential as the irradiation light source of the solar pa...

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Abstract

The invention provides a method and a system for realizing isolated power supply by light energy, aiming to overcome the defects of high-voltage breakdown and surface creeping discharge caused by physical connection between a high-potential platform and ground potential platform and electromagnetic interface due to mutual coupling generated by interference of a power grid and the high-potential platform. In the method and the system for realizing isolated power supply by light energy, solar power generation devices are irradiated by light sources, and light energy received by the solar power generation devices are converted into power energy to supply for power utilization facilities subjected to isolated power supply. The high-potential equipment is isolated from the ground potential equipment completely and physical connection is omitted.

Description

technical field [0001] The invention relates to a method and system for realizing isolated power supply in places where direct electrical connection is impossible, in particular to a method and system for isolated power supply by using light energy. Background technique [0002] In places where direct electrical connection is not possible, such as high-potential platforms, because the potential is different from the power supply potential of the grid, the grid cannot directly supply power to the equipment on the high-potential platform. High-potential devices on the potential platform are powered. Use an isolation transformer for isolated power supply. If the high-potential platform is ignited under high voltage, a pulse current will be generated in the primary side of the isolation transformer. In severe cases, it will cause damage to electrical equipment on the ground potential. Using generators for isolated power supply involves many mechanical moving parts, so it has th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N6/00H02J7/00H02S10/20
CPCY02E10/50Y02E70/30
Inventor 崔保群曹耀辉李志军路瑞亮
Owner 秦皇岛博硕光电设备股份有限公司
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