Tsim cov khoom siv hluav taws xob hloov pauv rau cov khoom siv hluav taws xob ib-theem thiab peb-theem
Selection of PWM Circuit
Kab lus xaiv UC3846 dual tso zis tam sim no hom PWM maub los IC. Qhov Circuit Court no muaj * siab tshaj * lub voj voog ntawm 50% ntawm qhov hloov zaus ntawm 20KHZ, yog li nws cov kev tswj tau zoo thiab ruaj khov.
IGBT tsav thiab kev tiv thaiv
IGBT work is controlled by the positive and negative gate voltage, when UGE>0, IGBT rau, thaum UGE<0, (general UGS ≤ -5V), IGBT cut-off. Taking into account its characteristics and operating principle, the choice of positive and negative dual power supply M57962L-type special drive integrated circuit. The circuit has a built-in timing logic short-circuit protection circuit, and has a protection delay function. Driver protection principle circuit shown in Figure 3 (b). In addition to the IGBT drive circuit itself to provide short-circuit (overcurrent) protection, in parallel with the IGBT RC buffer branch and power supply parallel absorption capacitors on both sides of the method is also effective.
Xaus
Qhov kev hloov hluav taws xob hloov pauv no yog qhov tsim nyog rau kev siv tswv yim. Vim hais tias cov qauv tsim ntawm lub rectifier Circuit Court yog raws li nyob rau hauv ib-theem kev txiav txim siab, thaum siv nyob rau hauv peb-theem fais fab mov muaj ib tug txaus margin, yog li ntawd lub system yog ruaj khov thiab txhim khu kev qha; siv hauv ib-theem fais fab mov tuaj yeem ua haujlwm ib txwm. Qhov no daws qhov tsis sib xws ntawm kev hloov hluav taws xob vim muaj kev txwv tsis pub siv hluav taws xob. Nrog rau txoj kev no, cov khoom siv hluav taws xob hloov pauv uas twb muaj lawm kuj tuaj yeem hloov mus rau hauv ib-theem, peb-theem hloov hluav taws xob tuaj yeem muab tau.
