| With the increasing requirement of high power supply system,DC/DC parallel current sharing technology can satisfy the high-power load commendably.Meanwhile,wireless communication with its rapid development,practical application in the field of power electronics and less complexity of physical connections,has made it easier to maintain and reconstruct the system and the DC/DC parallel wireless streaming technology has attracted much attention from researchers.The advanced software radio technology is utilized in the DC/DC parallel system as a means of communication in the future.Meanwhile both the theory basic and the core technology are also described based on the design of the software radio in the paper.Firstly,the hardware platform of wireless transceiver devices and the principles of selecting the electronics are described detailedly according to the central idea of software radio and the modules of DSP,FPGA,ADC/DAC,local oscillator(SI4133)and analog quadrature up /down converter even the smart antenna are included in this part.Thus,the foundation and platform for further optimization of communication algorithm are provided.In this paper,a software radio communication platform is established based on BPSK and the system function is divided into several parts.By utilizing the integrated development tool Quartus II 11.0 and Verilog HDL language,the communication function module of the system is designed,which consists of the ports of sending / receiving communication interface in parallel,the modules of frame / deframe,the modulation /demodulation of BPSK,the conversion of digital down and the interface design of SPI control.In order to verify the correctness of the design,a SignalTap II acquisition module FPGA is used to get the simulation waveform and to verify the stability of the system,the200 kHz communication rate combined with the hardware and software platform is used for wireless communication test.Finally,in order to meet the requirements of the subject,an improved software algorithm of three kinds of data wireless transmission system about ten bit,six bit and four bit is designed in this paper and the 200kHz/300 kHz communication rate is tested.The experimental results show that this method can significantly reduce the transmission data and perfectly improve the efficiency of data transmission.To realize the wireless current sharing control and ensure the steady state performance of the system,the 200 KHz is used to carry out the wireless current sharing test with the combination of hardware and software platform and the parallel Buck power supply system. |
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