IPM built-in tsav thiab tiv thaiv circuits ua kom yooj yim thiab yuav txhim khu kev qha kho vajtse, kom thaum txoj kev loj hlob ntawm lub cev, tseem tsa ceg cov tsis ua hauj lwm rau kev pab tiv thaiv. Piv nrog pa IGBT modules, IPM nyob rau hauv cov kev kawm thiab kev cia siab rau ntawm qhov lawv twb tau ntxiv khees me ntsis lawm.
Undervoltage tiv thaiv Circuit Court yuav tswj cov kev pab tiv thaiv voltage, overheat kev tiv thaiv, tshaj kev tiv thaiv thiab short-circuit tiv thaiv. Yog hais tias muaj ib txoj kev tiv thaiv Circuit Court nyob hauv IPM module, IGBT rooj vag tsav tsev yuav kaw tawm rooj vag tam sim no thiab tus txhaum teeb liab zis (FO). Ntau dlaim tso cai raws li nram no:
(1) tiv thaiv voltage hauv voltage kev tiv thaiv (UV): IPM siv ib tes + 15V muab lub hwj huam, yog cov mov voltage no tsawg tshaj li 12.5V, thiab rau ntau tshaj tOFF = 10ms, hauv qab tiv thaiv voltage, blockade lub rooj vag tsav Circuit Court, ntawm lub teeb liab tso zis ntau lawm.
(2) overtemperature kev tiv thaiv (OT): nyob ze ntawm tej daim IGBT rau insulating substrate tus kub sensor yog ntsia thaum IPM kub sensors ntsuas qhov kub ntawm lub substrate thaum kub yog exceeded, hla txoj kev tiv thaiv rau qhov kub thiab txias, blockade lub rooj vag tsav Circuit Court, ntawm lub teeb liab tso zis ntau lawm.
(3) overcurrent (OC): IGBT yog tias tam sim no tus nqi li tam sim no es tam sim no thiab ntev dua tOFF, overcurrent kev tiv thaiv, blockade lub rooj vag tsav Circuit Court, ntawm lub teeb liab tso zis ntau lawm. Yuav tsum tsis txhob ntev li ntawm di/dt, feem ntau ntawm cov IPM siv hom ob-theem shutdown. Qhov VG yog lawv tsis dhau tus tsav voltage, luv Circuit Court ISC tam sim no, IOC yog tus nqi tam sim no uas muaj tshaj, / Hmong IC yog tam sim no, collector IFO txhaum tso zis tam sim no.
(4) luv Circuit Court kev tiv thaiv (SC): yog hais tias cov kev tshwm sim load rau ib ntus Circuit Court los tswj lawv tsis ua hauj lwm los ib ntus Circuit Court, tam sim no ntws mus txog IGBT luv Circuit Court tam sim no lawm, ces tam sim ntawd luv Circuit Court tiv thaiv, blockade lub rooj vag tsav Circuit Court, ntawm lub teeb liab tso zis ntau lawm. Raws li nrog overcurrent tiv thaiv, yuav tsum tsis txhob ntev li ntawm di/dt, feem ntau ntawm cov IPM siv hom ob-theem shutdown. Pab kom cov ho tam sim no kom paub tias tam sim no thiab lub sij hawm teb, IPM siv real-time chaw tswj circuitry (RTC), kom lub sij hawm teb yog tsawg tshaj li 100ns, yog li no suppresses lub ncov currents thiab hwj huam, kev tiv thaiv ntxiv.
Thaum twg tus lub IPM UV, OC, OT, SC tej faults sij hawm, qhov txhaum tso zis co tes ntev tFO 1.8ms (President txog lub caij nws SC), lub sij hawm no, IPM yuav blockade lub rooj vag tsav, turn-off IPM txhaum li thaum kawg ntawm lub teeb liab cov zis, IPM yuav pib dua txiav, qhib rooj vag tsav channel.
Raws li tau pom, tus txhaum teeb liab ntaus nws tus kheej no xwb ces, yog tFO txhaum los tseem muaj tsis kav kawg, IPM yuav ua txoj kev rho cov tiv thaiv, kev ua. Overcurrent, luv Circuit Court, overheating tiv thaiv mas txom nyem heev kev khiav hauj lwm rau cov neeg mob no, ua tes hauj lwm yuav tsum muab pov tseg, ces IPM nrog tiv thaiv ib leeg tsis tau qoos tiv thaiv lawv tus kheej. Lawv kom ruaj ntseg tiag, txhim khu kev qha lub lag luam, supplementary yuav tsum tau kev tiv thaiv lwm Circuit Court.