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TIDM-1000: the control strategy based on the 3-axis stationary reference frame (abc)

Jeongsoo Yoo
Expert 1025 points

Part Number: TIDM-1000

Hello,

I have a question on the Design Guide TIDM-1000 of Vienna Rectifier-Based, Three-Phase Power Factor Correction (PFC) Reference Design Using C2000 MCU.

Specifically it is on the control strategy.

The control strategy for TIDM-1000 is based on the 3-axis stationary reference frame (abc).

As far as I know, there are other control strategies based on the 2-axis synchronous reference frame (dq) for the three-phase Vienna rectifier.

It seems that the control strategy for TIDM-1000 is much simpler with respect to the computational load for DSP because it does not need the Clarke and Park transformations as well as the inverse Clarke and Park transformations.

Is this the reason that TIDM-1000 controls the three-phase Vienna rectifier on the base of the 3-axis stationary reference frame (abc) in order to reduce the computational load of DSP?

How can you generally compare the control strategies based on the 3-axis stationary reference frame (abc) and the 2-axis synchronous reference frame (dq) for the three-phase Vienna rectifier?

Thank you for your advice.

With regards,

JS Yoo

  • 0
    TI__Genius 16085 points

    Hi Js Yoo,

    Jeongsoo Yoo said:
    Is this the reason that TIDM-1000 controls the three-phase Vienna rectifier on the base of the 3-axis stationary reference frame (abc) in order to reduce the computational load of DSP?

    Yes, this is one of the reason we choose this method compared with SVPWM. 

    Regards,

    Chen

  • 0 in reply to Chen Jiang ti
    Expert 1025 points

    Hi Chen Jiang ti,

    Thank you for your review.

    We are now preparing to develop a 30kW three-phase Vienna Rectifier.

    The output power of the reference design associated with TIDM-1000 is only 2.4kW.

    Do you think that I can apply the DSP firmware used in TIDM-1000 for the 30kW three-phase Vienna Rectifier by modifying system parameters appropriately?

    I heard that the control strategy based on the 3-axis stationary reference frame (abc) has some disadvantagies in comparison with the control strategy based on the 2-axis synchronous reference frame (dq). 

    For instance, it exhibits poor performance in transient and shows steady state error.

    How do you think?

    With regards,

    JS Yoo

  • +1 in reply to Jeongsoo Yoo
    TI__Genius 16085 points

    Hi Jeongsoo,

    Sorry for the late reply. I think it should be feasible to refer to TIDM-1000 s/w for 30kW design assuming the input freq does not change much compared with TIDM-1000.

    I don't have any comparison in terms of transient but steady state operation is good for TIDM-1000. You may refer to some research papers for more information. Thanks.

    Regards,

    Chen

  • 0 in reply to Chen Jiang ti
    Expert 1025 points

    Hi Chen Jiang ti,

    Thank you for your reply.

    Please let me close this case.

    I will get back to you later as I refer to the TIDM-1000 s/w for 30kW design.

    I appreciate your assistance.

    With regards,

    G. Kim