Wireless transmitter power supply current sharing controller and method based on current source

Abstract

The invention discloses a wireless transmitter power supply current sharing controller and method based on a current source, and the controller comprises a power frequency power grid, an AC LC filter, a first current source module, a second current source module, a DC reactor, a transmitter load, a voltage sensor, a first current sensor, a phase-locked loop, a first PI controller, a second current sensor, a first low-pass filter, a second PI controller, a third PI controller, a fourth PI controller, a fifth PI controller, a third current sensor, a second low-pass filter, a sixth PI controller, an SVPWM modulation module, an adder and a subtracter. Current sharing control of the two current source modules can be realized. According to the method, enumeration and selection of space vectors are avoided, so that the method can be conveniently applied to current sharing of any current source modules connected in parallel, and the method has good expandability.

Description

technical field [0001] The invention belongs to the radio field, in particular to a current source-based wireless transmitter power supply current equalizing controller and method. Background technique [0002] With the continuous development of 5G technology, the power of wireless transmitters continues to rise, which puts higher requirements on the power supply of wireless transmitters. In order to increase the power of the wireless transmitter power supply, it has become a common way to expand capacity through series-parallel connection of modular power supplies. However, it is worth noting that due to the inconsistency of hardware parameters, there are voltage and current sharing problems in the series and parallel connection of modular power supplies. If it is not handled properly, a wooden barrel effect will be formed between multiple power modules, which will greatly reduce the life of the equipment. and operational reliability. [0003] On the other hand, rectifier...

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Problems solved by technology

However, it should be noted that the implementation of this method depends on the enumeration and selection of space vectors. If the number of parallel modules continues to increase, the number of vectors will increase exponentially, so the scalability of existing methods is severely limited.

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