New sinusoidal AC servo drive development - Page 49


View Poll Results: Preferred power stage type (see descriptions below)

Voters
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  • SMD discrete MOSFETs

    22 14.19%
  • IRAMS10UP60A power module

    26 16.77%
  • Discrete through-hole MOSFETs with heatsink

    78 50.32%
  • SMD discrete MOSFETS + possibility to connect own custom external power stage

    13 8.39%
  • Controller logic only without integrated power stage. An external power stage must be used.

    13 8.39%
  • Some other solution (please specify)

    3 1.94%
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Thread: New sinusoidal AC servo drive development

  1. #577
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    Hi
    Dear tivoidethuong; I am implementing to control of an ac 3ph servo motor with FOC. I am going to buy a Dspic motion control development card.
    What do you think about this subject. Can I make similar development card?

    Can you send to me your development board pcb and circuits.
    Thanks



  2. #578
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    my schematic not yet testing,

    i think you can try dsPICDEM-MC1L 3-Phase Low Voltage Power Module to control servomotor



  3. #579
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    yes. tivoidethuong I will try Dspicdem mc-lv.
    Are there usefull knowledges or files in your documents about ac 3 ph servo motor controlling boards or etc..?
    Can you post to me?
    Thanks for your interest



  4. #580
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    to sakarya83

    i think you can try with MC1 dspic develop kit for motor control of microchip

    http://www.microchip.com/stellent/id...&part=DM300020

    b.r



  5. #581
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    Default position or velocity mode?

    Hi,

    I saw this video (http://video.google.com/videoplay?do...92974890836012) for VSD-A fluxeon drive and I have one question for xerxes, granitedevices or anyone.

    I found comment for this video:

    AC servo turning thru a mixed mode sequence: 1) Running various speeds in velocity mode 2) Homing in position mode and positioning to 180, 90 and -360 3) Running various speeds in velocity mode 4) Homing in position mode and positioning to 180 90 and -720.

    My question: Is it some mistake in 3)? I think it has to be 3) Running various speeds in position mode.

    I say this, because running motor at low speed with encoder resolutions < 60000 is imposible in velocity mode, only in position mode with trajectory profile update every 5-10 ms. Or I am wrong?



  6. #582
    Registered Xerxes's Avatar
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    Quote Originally Posted by brodolomac View Post
    Hi,

    I saw this video (http://video.google.com/videoplay?do...92974890836012) for VSD-A fluxeon drive and I have one question for xerxes, granitedevices or anyone.

    I found comment for this video:

    AC servo turning thru a mixed mode sequence: 1) Running various speeds in velocity mode 2) Homing in position mode and positioning to 180, 90 and -360 3) Running various speeds in velocity mode 4) Homing in position mode and positioning to 180 90 and -720.

    My question: Is it some mistake in 3)? I think it has to be 3) Running various speeds in position mode.

    I say this, because running motor at low speed with encoder resolutions < 60000 is imposible in velocity mode, only in position mode with trajectory profile update every 5-10 ms. Or I am wrong?
    There is no mistake, it's velocity control. It's not impossible, but it needs careful controller design. VSD velocity controller accepts that velocity reading is noisy (which it is at low speeds), and that's why motor makes some dithering noise at low speeds.



  7. #583
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    Default Re: New sinusoidal AC servo drive development

    mosfet special for 3000w brushless is
    model: ke724502



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New sinusoidal AC servo drive development
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