用STM32生成SPWM然后驱动逆变桥，下图是变压器一个输出端子的波形，一般般，呵呵，感觉可能是LC滤波参数部对，带负载能力不太强。
隔了一段时间搞了DC-DC去了，现在搞回这个，重做了驱动板，考虑了很多因素：
先上图吧：
改了之后波形：
由于示波器图片比较小，放大上存有失真，其实波形还比较好看的，频率非常稳定。LC滤波，参数：L=124uH(2*0.8双股绕，考虑了趋肤效应),C=3.3+3.3uH(CBB)，
SPWM查表法：400个点，调制比1:1（不知道适合不？）载波20K
vu16 Duty_Cycle_sinewavetable[400]={
1800,1828,1856,1884,1913,1941,1969,1997,2025,2053
,2081,2109,2137,2165,2192,2220,2247,2274,2302,2329
,2356,2383,2409,2436,2462,2488,2514,2540,2566,2591
,2617,2642,2667,2691,2716,2740,2764,2788,2811,2835
,2858,2880,2903,2925,2947,2969,2990,3011,3032,3052
,3072,3092,3112,3131,3150,3168,3186,3204,3222,3239
,3256,3272,3288,3304,3319,3334,3349,3363,3377,3390
,3403,3416,3428,3440,3451,3462,3473,3483,3493,3502
,3511,3520,3528,3536,3543,3550,3556,3562,3568,3573
,3577,3582,3585,3589,3592,3594,3596,3598,3599,3599
,3599,3599,3599,3598,3596,3594,3592,3589,3585,3582
,3577,3573,3568,3562,3556,3550,3543,3536,3528,3520
,3511,3502,3493,3483,3473,3462,3451,3440,3428,3416
,3403,3390,3377,3363,3349,3334,3319,3304,3288,3272
,3256,3239,3222,3204,3186,3168,3150,3131,3112,3092
,3072,3052,3032,3011,2990,2969,2947,2925,2903,2880
,2858,2835,2811,2788,2764,2740,2716,2691,2667,2642
,2617,2591,2566,2540,2514,2488,2462,2436,2409,2383
,2356,2329,2302,2274,2247,2220,2192,2165,2137,2109
,2081,2053,2025,1997,1969,1941,1913,1884,1856,1828
,1800,1771,1743,1715,1686,1658,1630,1602,1574,1546
,1518,1490,1462,1434,1407,1379,1352,1325,1297,1270
,1243,1216,1190,1163,1137,1111,1085,1059,1033,1008
,982 ,957 ,932 ,908 ,883 ,859 ,835 ,811 ,788 ,764
,741 ,719 ,696 ,674 ,652 ,630 ,609 ,588 ,567 ,547
,527 ,507 ,487 ,468 ,449 ,431 ,413 ,395 ,377 ,360
,343 ,327 ,311 ,295 ,280 ,265 ,250 ,236 ,222 ,209
,196 ,183 ,171 ,159 ,148 ,137 ,126 ,116 ,106 ,97
,88 ,79 ,71 ,63 ,56 ,49 ,43 ,37 ,31 ,26
,22 ,17 ,14 ,10 ,7 ,5 ,3 ,1 ,0 ,0
,0 ,0 ,0 ,1 ,3 ,5 ,7 ,10 ,14 ,17
,22 ,26 ,31 ,37 ,43 ,49 ,56 ,63 ,71 ,79
,88 ,97 ,106 ,116 ,126 ,137 ,148 ,159 ,171 ,183
,196 ,209 ,222 ,236 ,250 ,265 ,280 ,295 ,311 ,327
,343 ,360 ,377 ,395 ,413 ,431 ,449 ,468 ,487 ,507
,527 ,547 ,567 ,588 ,609 ,630 ,652 ,674 ,696 ,719
,741 ,764 ,788 ,811 ,835 ,859 ,883 ,908 ,932 ,957
,982 ,1008,1033,1059,1085,1111,1137,1163,1190,1216
,1243,1270,1297,1325,1352,1379,1407,1434,1462,1490
,1518,1546,1574,1602,1630,1658,1686,1715,1743,1771
};
