TIDM-02002: Voltage design of Bi-directional DC/DC solution for ESS

PaulWJ Fu

Part Number: TIDM-02002
Other Parts Discussed in Thread: C2000WARE, TIDA-010054

We will drawing a basic diagram of PCS. Using interface CAN to communicating to master controller module or EMS.
The conditionof DC-DC converter : High voltage: 400V, Low voltage:48V. Battery Pack voltage:36~53.4V.

ESS base on TI's solution

TIDA-00951 seems has no source code.
If it is still exist, could you provide us the source code or firmware? Or where is the sample code of TIDA-00951?
We want the function and voltage of design like as TIDA-00951.
Could you suggest the solution about Bi-directional DC/DC solution for ESS?
If TIDM-02002 could replace TIDA-00951, we want the workable solution at hardwre and software.
How to modify the value of second voltage connect the battery pack and battery module at hardware design and software?

over 1 year ago

0 Cody Watkins over 1 year ago

TI__Mastermind 41385 points

I will allow my colleague to respond first on TIDA-00951.

TIDM-02002 at a minimum would be need to reworked for new input/output voltages...Feel free to download the Digital Power SDK. The following folder has the CLLLC calculations: C:\ti\c2000\C2000Ware_DigitalPower_SDK_4_01_00_00\solutions\tidm_02002\hardware

Regards,
Cody

0 Salil over 1 year ago in reply to Cody Watkins

TI__Expert 3860 points

Hi,

TIDA-00951 source code was removed from the webpage as it was only a preliminary code and it was not supported by standard C2000 controlcards. The power topology used in this design was not as efficient as CLLLC or DAB. So it is recommended to refer to these topologies featured in TIDM-02002 and TIDA-010054. However, as Cody suggested, both of these designs need to be reworked for your input/output voltage levels.

Regards,

Salil

0 PaulWJ Fu over 1 year ago in reply to Salil

Prodigy 40 points

What is different form TIDM-02002 and TIDA-010054?

We want to the action of battery charging and discharging. Battery pack default is 48V.

Use TIDM-02002 and TIDA-010054. Which one design is best for PCS system?

0 Salil over 1 year ago in reply to PaulWJ Fu

TI__Expert 3860 points

Hi,

TIDM-02002 is a CLLLC power stage (a fully resonant topology controlled by frequency modulation), while TIDA-010054 is a phase shifted DAB (ZVS topology controlled by phase shifting of drive signals). For a PCS system, the phase shifted DAB may be a better option, as it can provide better operating range.

Regards,

Salil

0 PaulWJ Fu over 1 year ago

Prodigy 40 points

From CLLLC calculations: C:\ti\c2000\C2000Ware_DigitalPower_SDK_4_01_00_00\solutions\tidm_02002\hardware

We use calculation to meet our spec of design. Could you provide any suggestion about result?

Min

Avg

Max

Vin

360

400

440

Volts

Vout

53.4

Volts

Power

2300

Watts

Iin

6.388889

9.033888889

Amps

Iout

63.88889

90.33888889

Amps

RL @ Max Power

39.13043478

Ohms

1.33

Primary Side Switches

Coss_pri

258

Deadtime

100

Fres

500

kHz

0.000002

sec

For primary side ZVS Lm Limit

48.4496124

Ln=Lm/L1

1.923076923

1.3

57.4

C1 theoretical

5.274E-08

C2 theoretical

7.8018E-08

0 Cody Watkins over 1 year ago in reply to PaulWJ Fu

TI__Mastermind 41385 points

It looks like you have filled out the excel sheet, I would recommend following along in the design guide as well. https://www.ti.com/lit/pdf/tidueg2

Finally I would recommend to verify the calculations against scholarly articles.

Regards,
Cody

0 PaulWJ Fu over 1 year ago in reply to Cody Watkins

Prodigy 40 points

Could you provide the detail information about scholarly articles?

These parameter on excel. What does it means and how to use parameter to meet design?

0 Cody Watkins over 1 year ago in reply to PaulWJ Fu

TI__Mastermind 41385 points

Paul,

you'll have to go find literature on the matter. https://scholar.google.com/scholar?hl=en&as_sdt=0%2C44&as_vis=1&q=CLLLC+design&btnG=

Regards,
Cody

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TIDM-02002: Voltage design of Bi-directional DC/DC solution for ESS