Triac firing problem

[thalesmaia]

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

https://drive.google.com/file/d/0BwVP4AzXV_MqWkdXc2UybTJ3MG8/view?usp=sharing

 

[daveross100]

Can NOT open!

 

[IRstuff]

Seems to be fine:

Version 4
SHEET 1 1196 680
WIRE 400 -816 400 -864
WIRE 400 -816 320 -816
WIRE 480 -816 400 -816
WIRE 736 -816 736 -864
WIRE 736 -816 656 -816
WIRE 816 -816 736 -816
WIRE 1072 -816 1072 -864
WIRE 1072 -816 992 -816
WIRE 1152 -816 1072 -816
WIRE 320 -640 320 -816
WIRE 400 -640 400 -816
WIRE 480 -640 480 -816
WIRE 656 -640 656 -816
WIRE 736 -640 736 -816
WIRE 816 -640 816 -816
WIRE 992 -640 992 -816
WIRE 1072 -640 1072 -816
WIRE 1152 -640 1152 -816
WIRE -624 -576 -624 -608
WIRE -480 -576 -480 -624
WIRE -368 -576 -368 -624
WIRE -256 -576 -256 -624
WIRE 288 -528 288 -544
WIRE 288 -528 224 -528
WIRE 368 -528 368 -544
WIRE 368 -528 288 -528
WIRE 448 -528 448 -544
WIRE 448 -528 368 -528
WIRE 624 -528 624 -544
WIRE 624 -528 592 -528
WIRE 704 -528 704 -544
WIRE 704 -528 624 -528
WIRE 784 -528 784 -544
WIRE 784 -528 704 -528
WIRE 960 -528 960 -544
WIRE 960 -528 896 -528
WIRE 1040 -528 1040 -544
WIRE 1040 -528 960 -528
WIRE 1120 -528 1120 -544
WIRE 1120 -528 1040 -528
WIRE 896 -496 896 -528
WIRE 224 -480 224 -528
WIRE -624 -464 -624 -496
WIRE -480 -464 -480 -496
WIRE -368 -464 -368 -496
WIRE -256 -464 -256 -496
WIRE 320 -448 320 -544
WIRE 400 -448 400 -544
WIRE 400 -448 320 -448
WIRE 480 -448 480 -544
WIRE 480 -448 400 -448
WIRE 656 -448 656 -544
WIRE 736 -448 736 -544
WIRE 736 -448 656 -448
WIRE 816 -448 816 -544
WIRE 816 -448 736 -448
WIRE 992 -448 992 -544
WIRE 1072 -448 1072 -544
WIRE 1072 -448 992 -448
WIRE 1152 -448 1152 -544
WIRE 1152 -448 1072 -448
WIRE 896 -384 896 -416
WIRE 224 -368 224 -400
WIRE 400 -368 400 -448
WIRE 736 -368 736 -448
WIRE 1072 -368 1072 -448
WIRE 400 -240 400 -288
WIRE 736 -240 736 -288
WIRE 1072 -240 1072 -288
WIRE -656 -160 -656 -192
WIRE -384 -160 -384 -192
WIRE 400 -112 400 -160
WIRE 736 -112 736 -160
WIRE 1072 -112 1072 -160
WIRE -656 -48 -656 -80
WIRE -608 -48 -656 -48
WIRE -384 -48 -384 -80
WIRE -384 -48 -448 -48
WIRE -608 32 -656 32
WIRE -384 32 -448 32
WIRE -656 48 -656 32
WIRE -384 192 -384 32
FLAG -624 -464 0
FLAG -624 -608 Vcc
FLAG -656 -192 Vcc
FLAG -656 48 0
FLAG -480 -464 0
FLAG -480 -624 Vb
FLAG -384 -192 Vb
FLAG -384 192 Gb
FLAG 736 -864 Vb
FLAG -368 -464 0
FLAG -368 -624 Va
FLAG -256 -464 0
FLAG -256 -624 Vc
FLAG 736 -112 Vc
FLAG 400 -864 Va
FLAG 400 -112 Vb
FLAG 1072 -864 Vc
FLAG 1072 -112 Va
FLAG 592 -528 Gb
FLAG 224 -368 0
FLAG 896 -384 0
SYMBOL EXTRA\\BTA16-600BW 816 -592 R0
WINDOW 3 -21 -29 VLeft 2
SYMATTR InstName U1
SYMBOL SBORKA\\OPTO\\MOC3021 -560 -32 R0
SYMATTR InstName U2
SYMBOL EXTRA\\BTA16-600BW 736 -592 R0
WINDOW 3 -22 -26 VLeft 2
SYMATTR InstName U3
SYMBOL EXTRA\\BTA16-600BW 656 -592 R0
WINDOW 3 -29 -26 VLeft 2
SYMATTR InstName U4
SYMBOL res -368 -64 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R1
SYMATTR Value 330
SYMBOL voltage -624 -592 R0
WINDOW 3 -42 23 VLeft 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PULSE(0 5 0.0013889 0 0 .0005 0.0083333)
SYMATTR InstName Vdc
SYMBOL res -640 -64 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 300
SYMBOL voltage -480 -592 R0
WINDOW 3 -35 19 VLeft 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(0 180 60 0 0 -120)
SYMATTR InstName Vb
SYMBOL res 720 -256 R0
SYMATTR InstName R3
SYMATTR Value 5.8
SYMBOL ind 720 -384 R0
SYMATTR InstName L1
SYMATTR Value 1n
SYMBOL voltage -368 -592 R0
WINDOW 3 -35 19 VLeft 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(0 180 60)
SYMATTR InstName Va
SYMBOL voltage -256 -592 R0
WINDOW 3 -35 19 VLeft 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(0 180 60 0 0 120)
SYMATTR InstName Vc
SYMBOL EXTRA\\BTA16-600BW 480 -592 R0
WINDOW 3 -21 -29 VLeft 2
SYMATTR InstName U5
SYMBOL EXTRA\\BTA16-600BW 400 -592 R0
WINDOW 3 -22 -26 VLeft 2
SYMATTR InstName U6
SYMBOL EXTRA\\BTA16-600BW 320 -592 R0
WINDOW 3 -29 -26 VLeft 2
SYMATTR InstName U7
SYMBOL res 384 -256 R0
SYMATTR InstName R4
SYMATTR Value 5.8
SYMBOL ind 384 -384 R0
SYMATTR InstName L2
SYMATTR Value 1n
SYMBOL EXTRA\\BTA16-600BW 1152 -592 R0
WINDOW 3 -21 -29 VLeft 2
SYMATTR InstName U8
SYMBOL EXTRA\\BTA16-600BW 1072 -592 R0
WINDOW 3 -22 -26 VLeft 2
SYMATTR InstName U9
SYMBOL EXTRA\\BTA16-600BW 992 -592 R0
WINDOW 3 -29 -26 VLeft 2
SYMATTR InstName U10
SYMBOL res 1056 -256 R0
SYMATTR InstName R5
SYMATTR Value 5.8
SYMBOL ind 1056 -384 R0
SYMATTR InstName L3
SYMATTR Value 1n
SYMBOL res 208 -496 R0
SYMATTR InstName R7
SYMATTR Value 10Meg
SYMBOL res 880 -512 R0
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


TTFN
faq731-376

Need help writing a question or understanding a reply? forum1529


Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
There is a homework forum hosted by engineering.com:

http://www.engineering.com/AskForum/aff/32.aspx