.
è????2????o???????????????3??¨?????????è??70~80kv,????¤§?o??2??°????è?·??????????????±?o?è????2????a?????????????é?¤?°???????è??è???¤§?1????è?????????·?é??????o?è??????o|60-80.è????2????o????????????1?3???????????o????????????¨???????-???????é???o?é?3?????????é????????é???2??°??1??????????è???????¨??°é??é?2?o??????o??-?????????????????????????????????è????2????o??1?????|¨DC?????????è?aè??è?????
???è?±????????1é??????·?é????'???????o???3??¨???????????????è?±è?·???è|???????20ms,???è?±?¤????è???¨?30-50ms,è??è|??'§?3????é?¤?°????????????????è??è??è'1????°????è?????é??é????'???????o???±IGBT????????3??????????????o?????????????¨3????3?????????¨??????????o??????o???è?±??????????????|?????1é???????¨?????????è?±??????é??é??????o?????3?????|¨??¨20us???è??é????3??-IGBT,???è??????°????è?±?3????????????????
????????????????????1é?????é????¨é??é??????o?????????????é?'?-?????????????????°????????????°20us,??¨?????¨?????????è?a??¨????????????????????????????°'????????????????o|?¤§?¤§???é????????è??è???·?é??????3?????|¨???é??é?¤?°??????????