后来为了进行对比,将下桥占空比固定50%不变,单独调整上桥的占空比,效果稍微好些,上桥占空比到20%的时候管子的温度也会急剧上升.
这种状况造效率急剧下降.变压器做过150%的带载实验,线圈温度和磁芯温度正常.
请教各位高手,我的主电路拓扑这种方案可行否?还是控制方式有问题,想改成移相控制不知道效果好些不?还有就是如果这种拓扑方案是不合理的,这个功率级别的采取哪种主电路拓扑比教好?
自己感觉降频率可能会有些效果.频率变了变压器线圈也得变,害怕发热受不了.要求只能用风冷.
IGBT的吸收电路用了最简单的C缓冲电路 如下图所示.
由于自己刚涉足电源方面,有些东西说的还不是很明白,各位还需要什么信息,请告之,我会及时补充.
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