MW¼¶
·çµç±äÁ÷Æ÷IGBTÄ£¿éÖ±Á÷ĸÏßÂ˲¨µçÈÝÑ¡Ôñ£¬
IGBTÄ£¿éÑ¡ÓÃÈýÁânew mpdϵÁÐ
IGBTÄ£¿éCM1800DY-34S£¬½éÉÜÁ˵çÈÝÎÆ²¨µçÁ÷²úÉú»úÀí£¬ÎÆ²¨µçÁ÷¼ÆËã·½·¨£¬²¢ÒÔ´ËΪÒÀ¾ÝÑ¡ÔñºÏÊʵı¡Ä¤µçÈÝÆ÷£¬×÷ΪֱÁ÷ĸÏßÂ˲¨µçÈÝ¡£
1£©µçÈÝÎÆ²¨µçÁ÷µÄ²úÉú
ÓÉÓÚ
IGBTµÈ¿ª¹ØÆ÷¼þµÄ¿ìËÙ¿ªÍ¨ºÍ¹Ø¶Ï£¬ÔÚ±äÁ÷Æ÷Ö±Á÷²àµçÁ÷ÖÐËùÒýÆðµÄ¿ª¹ØÆµÂʼ°ÆäżÊý´ÎµÄ¸ßƵ·ÖÁ¿£¬Õⲿ·ÖÎÆ²¨µçÁ÷¶¼ÐèÒªÁ÷¹ýÖмäÖ±Á÷Â˲¨µçÈÝ¡£²ÉÓÃSVPWM¹¤×÷µÄ±äÁ÷Æ÷£¬ÎƲ¨µçÁ÷ÓÐЧֵÓë½»Á÷Êä³öÏàµçÁ÷µÄ¹ØÏµÈçÏ£º
ÆäÖУ¬µ÷ÖÆ±È

U
refΪÏàµçѹ·åÖµ£¬
U
DCΪֱÁ÷µçѹ£¬
COSθΪ¹¦ÂÊÒòÊý¡£
°´ÕÕ»ú²àºÍÍø²à±äÁ÷Æ÷ÔÚ¸÷×Ô³ÖÐø×î´ó¹¤×÷µçÁ÷¼ÆË㣬»ú²àºÍÍø²à¸÷3¸öÄ£¿é£¬ÔòÎÆ²¨µçÁ÷ÓÐЧֵΪ£º
Èç¹û²»¿¼ÂÇ×é¼þ¼äµÄµçÁ÷·ÖÅ䲻ƽºâ£¬Ôò»ú²àÿ¸ö×é¼þÖÐÖ±Á÷µçÈÝÎÆ²¨µçÁ÷ÓÐЧֵΪ193A£¬Íø²àÿ¸ö×é¼þÖÐÖ±Á÷µçÈÝÎÆ²¨µçÁ÷ÓÐЧֵΪ167.7A¡£
2£©Ö±Á÷Â˲¨µçÈÝÎÆ²¨µçÁ÷·ÂÕæ·ÖÎö
ÒÔÉϼÆËã½á¹ûΪ»ú²àºÍÍø²àµçÈݵÄ×ÜÎÆ²¨µçÁ÷ÓÐЧֵ£¬¶ø±äÁ÷Æ÷ʵ¼Ê²ÉÓÃ×é¼þµÄģʽ£¨¼´Ã¿ÏàIGBTºÍÖ±Á÷Â˲¨µçÈÝ×ö³ÉÒ»¸öÕûÌ壩£¬ÈýÏàÔÙͨ¹ýĸÅÅ»¥ÁªÆðÀ´¡£ÓÉÓÚÈý¸ö×é¼þÖ±Á÷²àÖ®¼ä²»¿É±ÜÃâµÃ´æÔÚ×Å·Ö²¼µç¸Ð£¬·Ö²¼µç¸ÐµÄ´æÔÚ½«Ó°ÏìÎÆ²¨µçÁ÷ÔÚÈý¸ö×é¼þÖ±Á÷µçÈݼäµÄ·ÖÅ䣬ͬʱÓÉÓÚ·Ö²¼µç¸ÐÓë×é¼þÖеÄÖ±Á÷µçÈÝ·¢ÉúгÕñ£¬»¹»á½øÒ»²½Ôö¼Ó×é¼þÖеçÈݵÄÎÆ²¨µçÁ÷¡£¿¼ÂÇ·Ö²¼µç¸Ðºó£¬±äÁ÷Æ÷ÄÚ²¿Êµ¼ÊµÄÁ¬½Ó¹ØÏµÈçÏÂͼËùʾ¡£
ͨ¹ýMATLAB Simulink´î½¨Ä£Ðͺó£¬ÀûÓÃÈý¸ö¹¦ÂÊ×é¼þ¹¹³ÉÍø²à±äÁ÷Æ÷½øÐзÂÕæ£¬Ã¿¸ö¹¦ÂÊ×é¼þÖÐÖ±Á÷µçÈÝÉϵÄÎÆ²¨½á¹ûÈçÏÂͼËùʾ¡£Èý×éµçÁ÷×ܺÍΪ498A£¬Óë¼ÆËã½á¹û503A»ù±¾ÎǺϣ¬ÑéÖ¤ÁËÀíÂÛ¼ÆËãµÄÕýÈ·ÐÔ¡£
ÖмäµçÈÝÎÆ²¨µçÁ÷£º¢Ùic1=166A¢Úic2=166A¢Ûic3=166A
¼ÙÉèÄ£¿éÖ®¼ä²ÉÓø´ºÏĸÅÅÁ¬½Ó£¬¸´ºÏĸÅŵÄÔÓÉ¢µç¸ÐΪ40nH£¬Ïß·×迹Ϊ0.5mΩ£¬Ôò·ÂÕæ½á¹ûÈçÏÂͼËùʾ¡£
ÖмäµçÈÝÎÆ²¨µçÁ÷£º¢Ùic1=520A¢Úic2=480A¢Ûic3=530A
Óë¼ÆËã½á¹ûÏà±È½Ï£¬Ã¿ÏàÏàÎÆ²¨µçÁ÷ÒѽӽüÀíÂÛ¼ÆËãÖµ£¬²¢ÇÒ3Ïà×é¼þÖ®¼äÖ±Á÷µçÈÝÎÆ²¨µçÁ÷²»Äܹ»Æ½¾ù·ÖÅä¡£µçÈÝÎÆ²¨µçÁ÷ÓëÖ±Á÷Á¬½ÓÍÅÅ·Ö²¼µç¸ÐÃÜÇÐÏà¹Ø£¬¶øÖ±Á÷ĸÅŵķֲ¼µç¸ÐÎÞ·¨¾«È·¼ÆË㣬Òò´ËÎÒÃǰ´ÕÕ×î¶ñÁÓÇé¿öÏÂÿ¸ö¹¦ÂÊ×é¼þ³ÐÊÜÕû¸öÖ±Á÷²àµçÁ÷ÎÆ²¨¿¼ÂǵçÈݵÄËðºÄ¼ÆËã¡£
3£©Ö±Á÷Â˲¨µçÈݵÄѡȡ¼°ËðºÄ¼ÆËã
ÒÔElectronicon¹«Ë¾Ö±Á÷Â˲¨µçÈÝΪÀý£¬ÐͺÅΪE50.N13-424NT0:1100V/420μFµÄµçÈÝÔÚ·çµçÁìÓòÓ¦ÓÃ×î¹ã·º,¼¼Êõ²ÎÊýÈçÏÂËùʾ£¬Æä¶î¶¨ÎƲ¨µçÁ÷Ϊ40A¡£
³§¼ÒÌṩµÄµÈЧESR¼ÆË㷽ʽÈçÏ£º
ÓÉÓÚÖ±Á÷Â˲¨µçÈÝÉϵÄÎÆ²¨µçÁ÷Ö÷ÒªÊÇ2±¶¿ª¹ØÆµÂÊ£¨6kHz£©´Îг²¨£¬Òò´Ë¿ÉÒÔ¼ÆËãµÃµ½µçÈݵĵÈЧ´®Áªµç×èΪ£º
·çµç±äÁ÷Æ÷ÒªÇó¹¤×÷»·¾³Î¶ÈΪ45¡æ£¬ÈçÒªÇóµçÈÝÄÚ²¿ÈȵãζÈСÓÚ75¡æ£¬ÔòµçÈÝÎÂÉýӦСÓÚ30K¡£ÓɵçÈݳ§¼ÒÌṩµÄµçÈÝÄÚ²¿Èȵ㵽»·¾³µÄÈÈ×èÈçϱíËùʾ£¬Èç¹ûÈȵãζÈΪ75¡æÒÔÏÂʱµçÈݵķ¢Èȹ¦ÂÊÓ¦¸ÃСÓÚ7.14W¡£
Èç¹ûÿ¸ö¹¦ÂÊ×é¼þ²ÉÓÃ10Ö»µçÈݲ¢ÁªµÄ»°£¬¼´Ê¹ÔÚµ¥¸ö×é¼þ³ÐÊÜÎÆ²¨µçÁ÷µÄÌõ¼þÏ£¬»ú²àºÍÍø²àµçÈÝÉϵÄESRËðºÄ·Ö±ðÈçÏÂËùʾ£¬Ò²¿ÉÂú×ãÎÂÉýÒªÇó¡£
Òò´Ë£¬Èç¹ûÿ¸ö×é¼þÄÚ²ÉÓÃ10Ö»Ö±Á÷µçÈݲ¢ÁªÊ±£¬Ö»ÒªµçÈÝÐèÒªÂú×ãϱíÒªÇ󣬼´¿ÉÂú×ãÉè¼ÆÒªÇó¡£