• State
  • Locked Locked
  • Replies 4 replies
  • Subscribers 31 subscribers
  • Views 1036 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ISO5851EVM: ISO5851EVM with DC bus

Bogdan Nicola
Prodigy 140 points
Part Number: ISO5851EVM

Hi,

We have the following question from one of our customers:

“Can ISO5851EVM be used with a DC bus? If so, is it possible to control the voltage on a DC bus with one IGBT, similar to a DC brake chopper? “

 

Could you please assist?

Thank you in advance for your support.

Kind regards

Bogdan

  • 0
    TI__Intellectual 2855 points
    Hi Bogdan,

    What is the BUS Voltage and the load on it?

    Regards
    Tejas
  • 0
    TI__Intellectual 1665 points
    Bogdan,

    The EVM can be used to drive IGBT depends on customer system configurations.
    Do you know how customer wants to connect the EVM to the power stage?

    With Regards,
    Xiong
  • 0 in reply to Tejas Hommaradi
    Prodigy 20 points
    Hi Guy's, In an effort to explain further. The DC bus with overspec'd DC capacitance is a common coupling point for both a 30kwp wind turbine and a 12 kwp solar array. All of which are high VDC (100 - 350 VDC). I'm trying to regulate the DC voltage to 3oo vdc after all inverters connected to the bus are generating at full A/C capacity. I was hoping to use the driver to read the dc voltage through reference voltage and in turn would create the IGBT signal to dissipate power through a resistive load maintaing or holding the DC voltage at 300VDC. A little like a Brake Chopper or a Dynamic Brake. Any thoughts would be greatly appreciated. Thanks in advance.
  • 0 in reply to Xiong Li
    Prodigy 20 points
    Hi,

    The EVM would use a dc bus reference voltage to generate a signal to drive the IGBT which would in turn regulate/hold a DC bus voltage by a means of dissipating power through the IGBT and into a resistive load.

    Thanks in advance.