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Characterization and detection of intermediate frequency furnace and -IGBT module
Intermediate frequency furnace -IGBT
1?common?-IGBT?module?of intermediate frequency furnace.
Intermediate frequency?furnace -IGBT?module?is divided intoone-way?medium frequency furnace?-IGBT module,?-IGBT moduleof two-way?medium frequency furnace.?One-way?medium frequency furnace?-IGBT module?with?A,?K,?control?of anodecathode?pole G?three?pin.?Double?medium frequency furnace?-IGBT?module has?a first anode,?the second anode?A1?(T1)?A2(T2),?control?G?three?pin.
Only when there is a?positive?voltage is applied?between the one-way?medium frequency furnace?of anode?and?cathode?module of -IGBT?A?K,?and?G and?between the cathode?and thediscipline?is?required to?forward?the trigger voltage,?canbe?triggered and conducted.?At this time A,?K?is a?low resistance?conducting?anode?and?cathode?of A?shape,?Kpressure drop?is about 1V.?Oneway intermediate frequencyfurnace?-IGBT module?is turned on,?the discipline?is?G evenget?trigger voltage,?anode?and?cathode?only?between?A?Kremained?positive?voltage,?one-way?medium frequency furnace-IGBT module?continued in a?low resistance?conducting?shape.Only when the?anode?voltage of A?or?A,?the cathode?anodeundo?K?voltage?polarity?produce?rotation?(AC?zero),?one-way?medium frequency furnace?-IGBT module?that?is composed of a low resistance?conducting?form into?high resistance?toshape.?One-way?medium frequency furnace?-IGBT module?oncestop,?even if the?anode?and?cathode?of A?between the K?and the new?together with the?forward voltage,?still need tocontrol?G and?K?between the?cathode?from the new?andpositive?trigger voltage?can be conducted.?Oneway intermediate frequency?furnace -IGBT?module?conduction?and closed?containment?form?the equivalent of switching?and?off state,?it?can be made into?a contactless switch.
Double?medium frequency furnace?-IGBT module?first anode?A1 and second?anode A2,?whether?the voltage?polarity ispositive?or?negative,?only need to control the?pole G?and the first anode?A1?with?positive and negative polaritydifferent?trigger voltage,?can?trigger?a?low resistance state.?At this time A1,?A2?pressure drop?is about 1V.Double?medium frequency furnace?-IGBT module?onceconduction,?even lost the?trigger voltage,?can continue tomaintain the conduction?shape.?Only when?the first anode,the second anode?A1?A2?current decreases,?less than?the holding current?or A1,?A2?when the voltage?polarity?rotationand no?trigger?voltage,?two-way?medium frequency furnace?-IGBT module?was?truncated,?now?only?from?the trigger voltage?can be conducted.
Detection of 2?one-way?medium frequency furnace?-IGBT module.
Multimeter?selected?R*1 resistor?block,?with red,?black twoprobes are respectively?measured?between?any two?pin?isreverse resistance?to find?reading?as a pair of?pin?tens ofohms,?at this time?the black pen?pins?to?control?G,?the red pen?pinout as the?cathode?of K,?another?empty?foot as theanode A.?The?black pen?is connected to the anode?of A has been?strengthened,?the red pen?is?connected with the cathodeK.?The?multimeter?pointer should?not move.?Use short?momentshorted?anode A?and?control?G,?the?multimeter?electricintercept?pointer should be?deflected to the right,?10 ohmresistance?readings for?mercy.?Such as anode?A is connected to?the black pen,?cathode K?of the red pen,?producedeflection?meter?pointer,?the?one-way?medium frequencyfurnace -IGBT?module?has breakdown?defeat is not?good.
Detection of 3?two-way?medium frequency furnace?-IGBT module.
Using a multimeter?R*1 resistor?block,?measuring any?two pinbetween?positive and negative resistance?with red,?black twopen?parting,?whether?the?two readings?as infinite.?If?a group of?tens of?ohms,?the?group of red,?black?list?the?two pin?for the first?anode A1?and containing?G,?another?footis the?second?anode A2.?To?A1,?G,?and?A1,?G?asmeasurement?between?positive,?reverse resistance,?reading relative?smaller?that?measurement of the?black pen?the?pin for?the first anode?A1,?the red pen?the?pin?for disciplining?pole G.?The?black pen?connected to the secondanode?A2 has been determined,?the red pen?with the firstanode A1,?the?multimeter?pointer?should not?deflect,?the resistance is?infinite.?And then with a short?connection?A2,G?instant?short circuit?to?G,?with?positive?trigger voltage,?A2,?A1?resistance?of about 10 ohms?control.?Thendisconnect A2,?G?short?connection,?multimeter readingshould be?10 ohms.?For?the red,?the black pen?wiring,?the red pen?connected to the second?anode A2,?black probe connected to?the first anode?A1.?Strange?multimeter?pointer should?not?attack?deflection,?resistance is?infinite.?With short wires will?A2,?G pole?again?instant?short circuit?toG,?and?a negative?trigger voltage,?A1,?A2?between the resistance?is 10?ohms around.?Then?disconnect A2,?G?veryshort?wiring,?multimeter?reading should be?stubborn,maintained at?about 10 ohms.?With the?above?rules,?clarifythe measured?bidirectional?intermediate frequency furnace?-IGBT modules?are not damaged and?three?pin?polarity judgmentrough.
Detection of?high power?-IGBT?module?of intermediate frequency furnace,?need to use the?table?black pen?is connected in series with a?1.5V dry cell batteries?inmillion,?marching in a?trigger voltage.
Thyristor?(intermediate frequency?furnace -IGBT?module)?pinidentification
Thyristor?foot?differential?use the following?way: first usemultimeter R*1K?gear?measuring?a?resistance value between,the resistance of small?feet?leave for?Discipline?pole and the cathode,?the?left?foot?as anode.?Then the?multimeter?is placed in the R*10K?block,?pinch the?anode?and?another footwith your fingers,?and do not let?the feet?contact,?the black pen?is connected to the anode,?the red pen?with?leftfoot,?such as?the?right?swing,?the?red pen?are connected to the?cathode,?no swing?is?to contain?very.