Solar DC converter, power supply control method and air conditioning power supply system

Abstract

The invention discloses a solar DC converter, a power supply control method and an air conditioning power supply system. The solar DC converter comprises a first solar output control circuit of which the input end is connected with the output end of a first solar cell panel and used for controlling the output of the first solar cell panel; a second solar output control circuit of which the input end is connected with the output end of a second solar cell panel and used for controlling the output of the second solar cell panel; and a transformer isolation power conversion circuit of which the input end is connected with the output end of the first solar output control circuit and the output end of the second solar output control circuit and the output end is used for being connected with a load and used for supplying power to the load. The problem of high cost caused by the fact that all the cell panel sets require to use multiple power converters to be corresponding to multi-input solar cell power respectively when multiple solar cell panel sets supply power in the prior art can be solved so that the equipment cost of solar power input can be reduced.

Description

technical field [0001] The invention relates to the technical field of solar power supply, in particular to a solar DC converter, a power supply control method, and an air conditioner power supply system. Background technique [0002] At present, in solar power conversion devices, non-isolated power conversion methods are mostly used for several kilowatts. Although the use of non-isolated solar power converters has certain advantages in cost and efficiency, there is a problem of ground leakage current. Scholars at home and abroad have proposed a variety of power conversion topologies and control strategies to solve the system's ground leakage current from different angles, such as The active common-mode interference suppression scheme detects the common-mode signal through capacitors, etc., and then connects it into the common-mode loop after emitter follower and amplification reverse to counteract the common-mode interference; and the three-phase four-arm scheme adds For t...

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Problems solved by technology

[0005] The present invention provides a solar direct current converter, a power supply control method, and an air-conditioning power supply system, to at least solve the problem of using multiple power converters corresponding to multi-input solar battery power supplies when multiple solar panels supply power in the prior art. problems that make costly

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