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HV Solar DC_AC kit issue.

Athula Kumara
Prodigy 205 points

Other Parts Discussed in Thread: CONTROLSUITE

Hello I am using this 

I am using F28M35xx ISO controlCARD  (release 1.0)

I installed Control suite and usde these files as instructions.

C:\ti\controlSUITE\development_kits\HV_SOLAR_DC_AC_v1.1\Solar_HV_DCAC_Concerto_SCI_Rev_0\c28

I uploaded the program using Code Composer Studio.

I used the GUI program and it shows DC bus voltages and information correctly.

Problem: I followed the quick guide, and make all settings correctly. But controller card LD3 bulb flash at about 1 second rate and LD2 does not flash. when I turned ON system two IGBT burned and DC side fuse gone.(I added fuse)

I checked the IGBT drivers and they work fine. why LD3 flash always and why LD2 do not flash? actaully they have mentioned that LD2 should flash if system works fine. I replaced IGBT and I asked your help before do the same steps and burn IGBT again.

I have added information sheet i followed. here.

Quick Start Guide for Solar HV DC-AC Board_Rev1.3.pdf

Thank you! 

  • 0
    TI__Mastermind 31580 points
    Hi Athula,

    I will move your post to the C2000 forum where one of the applications team there will answer your post.

    Regards

    Peter
  • 0
    Prodigy 205 points

    Hi

    I found a issue on the board.

    I noticed that two IGBT in one ROW gets fired same time, so that path directly conducts. (short DC line through IGBT).

    I am using the firmware given by Ti .

    Next what I did was used only 2 drivers and two mosfets (Q1 and Q4) , in that case positive half of inverter output was there and load get energized. system worked fine.

    Next I did same for Q2 and Q3 (diagonal IGBTs in driver) , system worked fine and got negative half of the AC output.

    So I am sure that IGBT and there drivers are working. I tested drivers individually.

    But still I can't use all 4 IGBTs because they get fired at same time and get burned.

    I have attached system schematic here. please check it.

    I am going to check there gate signals but it is little complicated.Solar_HV_DC_AC_Sch_PCB.pdf

    is it fault in firmware?

    I am using solar HV DC AC braod v2.2 , but I have control suite files that firmware file is Solar HV DC AC v1.1 

    Anyone have v2.2 files in control suite folder?

    Please check this path of your computer

    C:\ti\controlSUITE\development_kits

    Thank you