CAJ | 학술논문

为了解决目前舰艇直流推进电力系统中变流机组机械振动和噪声大的问题,提出了一种以三相交—直流变换和三重化直—直流变换背靠背联接的交—直流双 PWM 变流器电路拓扑.通过对几种中、大功率密度交—直流 PWM 变流器电路拓扑的对比分析,表明了该变流器电路拓扑的优越性.同时,构建了以“DSP+FPGA”为核心的数字控制系统,完成了实验原理样机的研制并进行了实验验证.实验结果证实,该变换器电路拓扑不仅实现了变流机组的所有功能,而且功率密度、波形质量等得到显著提升,振动、噪声指标分别降低了20 dB和30 dB.
위료해결목전함정직류추진전력계통중변류궤조궤계진동화조성대적문제,제출료일충이삼상교—직류변환화삼중화직—직류변환배고배련접적교—직류쌍 PWM 변류기전로탁복.통과대궤충중、대공솔밀도교—직류 PWM 변류기전로탁복적대비분석,표명료해변류기전로탁복적우월성.동시,구건료이“DSP+FPGA”위핵심적수자공제계통,완성료실험원리양궤적연제병진행료실험험증.실험결과증실,해변환기전로탁복불부실현료변류궤조적소유공능,이차공솔밀도、파형질량등득도현저제승,진동、조성지표분별강저료20 dB화30 dB.
This paper presents a back-to-back AC-DC converter circuit topology with a three phase AC/DC converter and a triple-channel interleaved DC/DC converter. This converter resolves the mechanical vi?bration and noise problem of motor units in naval DC electric propulsion systems. Comparison and analysis of several other large power density AC-DC converters reveal the superiority of the proposed one. Mean?while,the digital control system,based on DSP and FPGA,is built and a corresponding prototype convert?er is constructed. The experiment results show that the converter not only realizes all functions of conven?tional motor units and demonstrates excellent performance in power density and waveform quality,but also reduces the vibration and noise by 20 dB and 30 dB.