一种具有高频环节的 SPWPM 变换电路的研究  

Research on a Novel SPWPM Conversion Circuit with HF Link

作　　者：吴保芳[1] 赖向东[1] 姚国顺[1] 

机构地区：[1]武汉空军雷达学院

出　　处：《电力电子技术》1997年第4期44-47,共4页Power Electronics

摘　　要：提出了一种新的调制方式。该方式通过有效地变动单极性ＳＰＷＭ电压波形的结构，得到ＳＰＷＰＭ电压波形。ＳＰＷＰＭ电压波形含有ＳＰＷＭ波的所有信息，但不含调制波的频率成分，因此可利用高频变压器进行耦合传输。通过解调，ＳＰＷＰＭ波又可恢复为常规的ＳＰＷＭ电压波形。这样，大大地减小了变换装置的体积和重量，提高了效率，减小了听觉噪声。This paper proposes a new method of modulation.Through changing the composition of single polarity SPWM wave,a new SPWPM wave can be obtained,which includes the whole informations of SPWM wave except the modulated signal frequency.Therefore,the new wave can be transmitted by high frequency transformer.It can be returned to the conventional SPWM wave by demodulation.So,the power supply system has reduced weight and volume with increased efficiency and decreased noise.

关 键 词：电压波形 脉宽调制 高频环节 电源 

分 类 号：TN787.2[电子电信—电路与系统] TN86