移相全桥的MOSFET管漏极电流Id有4KA!
用spice仿真了一下,输入是60V的直流,开关频率是120KHZ,这个漏极电流也太大了吧,哪里出了问题?
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@abing
仿真的?把图与波形贴上看看
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开关122.5KHZ,占空比0.48,死区时间0.02T
0
@cafetea
把各个驱动的波形分别拿来看看,移相的时序对不对,怎么开通时间这么短,是不是直通了?
四个开关管的顺序:
1 3
2 4
图一是1、2的驱动脉冲
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图二是3、4的驱动脉冲
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/65/2480111211961085.jpg');}" onmousewheel="return imgzoom(this);">
图三是1、2、3、4的驱动脉冲
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对应的漏极电流波形,高达3KA,怎么办?
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1 3
2 4
图一是1、2的驱动脉冲
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/65/2480111211960985.jpg');}" onmousewheel="return imgzoom(this);">
图二是3、4的驱动脉冲
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/65/2480111211961085.jpg');}" onmousewheel="return imgzoom(this);">
图三是1、2、3、4的驱动脉冲
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/65/2480111211961120.jpg');}" onmousewheel="return imgzoom(this);">
对应的漏极电流波形,高达3KA,怎么办?
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@abing
你后面的电路没画出来,抓图也要一致啊,要不怎么清楚你测的是那点的波形?
完整电路:
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500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/65/2480111211973988.jpg');}" onmousewheel="return imgzoom(this);"> 0
