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Triac firing problem

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thalesmaia

Electrical
May 2, 2015
1
Hello, I'm having problem with triac firing and I have no clue what may be.

Please, check the attached link for more details (LTSpice).

When I trigger Vbc phase I get Vab conducting as well. Tried to build a simulation but is not converging yet.
Any help will be appreciated.

Sincerely

 
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Seems to be fine:

Version 4
SHEET 1 1196 680
WIRE 400 -816 400 -864
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SYMBOL EXTRA\\BTA16-600BW 656 -592 R0
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SYMBOL voltage -480 -592 R0
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WINDOW 123 0 0 Left 2
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SYMBOL EXTRA\\BTA16-600BW 1072 -592 R0
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SYMBOL EXTRA\\BTA16-600BW 992 -592 R0
WINDOW 3 -29 -26 VLeft 2
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SYMATTR InstName R5
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SYMATTR InstName R7
SYMATTR Value 10Meg
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SYMATTR InstName R8
SYMATTR Value 10Meg
TEXT -728 -312 Left 2 !.tran 0 .04 0 1.6667e-04
TEXT -720 -416 Left 2 ;Fontes de Tensão
TEXT -720 -280 Left 2 ;Parâmetros de simulação
TEXT -720 112 Left 2 ;Circuito de disparo
TEXT 280 -848 Left 2 ;Fase AB
TEXT 616 -848 Left 2 ;Fase BC
TEXT 952 -848 Left 2 ;Fase CA


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