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TMDSHVMPPTKIT: THMDSHVMPPTKIT operation below input voltage range

Kazushi Watanabe
Prodigy 10 points
Part Number: TMDSHVMPPTKIT
Other Parts Discussed in Thread: CONTROLSUITE

Hallo! I appreciate for your kindly advice regarding

"THMDSHVMPPTKIT operation below input voltage range" for our research

1.Can this KIT(input voltage range is 200min-300Vmax) work at  Vpv below 200V?

This is because we plan to use actual Solar module around 500W that has lower voltage such as 70-100V (example: use 2pcs of 200W panel (40V 6A ) in series? 

We of course can accept power derating at below lower input voltage, 200V.

2. If yes, we'd like to try with 2*200W solar panes that has Vmp=40V, Imp=5A, 2 in series. 

In this case, I expect KIT MPPT works at Vpv=80V (40*2) and Ipv=2 to 3Amps (limited by KIT) . Is this correct?

We guess, input current will be limited around 2 to 3Amps and output power from KIT will be about 80V*(2 to 3A) * efficiency=150 to 220W.

3. If not, we'd like to ask your advice for modification in software and hardware by our power electronics experts. Can we get support from TI experts?

Our experts are familiar with DC-DC conversion including safety in hardware and software and willing to try with our own responsibility.

Thank you for your support in advance.

K.Watanabe, President, Fourteen Power ltd.     

  • 0
    TI__Guru** 109730 points

    Yes, you can use the High voltage kit with a low input voltage, but you might have to use an external +15V dc power supply by the connector J2 to provide the power supply to the inverter and controller. The on-board SMPS might not work well at the low input voltage.

    Please take a look at the hardware guide of the kit in the folder of controlSUITE(https://www.ti.com/tool/controlsuite).

    C:\ti\controlSUITE\development_kits\HVMotorCtrl+PfcKit_v2.1\~HVMotorCtrl+PFC-HWdevPkg

    C:\ti\controlSUITE\development_kits\HVMotorCtrl+PfcKit_v2.1\~Docs

  • 0 in reply to Yanming Luo
    Prodigy 10 points

    Thank you for prompt response.

    I've found more information in controlSUITE C:\ti\controlSUITE\development_kits\HV_SOLAR_DC_DC. (not in HVMotorCtrl )

    I will have further study for current limit, etc, then may ask for further support if necessary.

    Tks a lot !