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Rishi Vasuki

Rishi has been with Microchip Technology since 2001.  He has experience in developing portable music players and designing a wide variety of embedded applications (audio, security, motor control, power supplies and smart sensor).  His current focus includes PIC(R) XLP MCUs for eXtreme Low Power applications as well as Microchip's mTouch solutions using 8-bit PIC18 & 16-bit PIC24 MCUs.

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  • Hi,

     

    I am considering a DSPic for a grid tied inverter. The inverter has a 400VDC input (input source solar DC/DC converter). Is the DSPic ever used for such an application? I know it has been used for AC induction motor control and AC/DC power supplies. My application will be a mix of both application. Grid Inverters have similar control loops (park - clark vector transformations) as motors and same circuits (full bridge) as power supplies. If anyone has information on the use of DSPic for these devices please share.

     

    Best regards,

     

    Enrico Migchels

  • in reply to enrico.migchels

    Hi Enrico,

     

    There are 2 keys application targets in dsPIC30/33 families :

     

    * MOTOR control (references with "MC" at the end like DSPIC33FJ256MC710A-I/PF.DSPIC33FJ256MC710A-I/PF. : http://www.microchip.com/dscMOTOR

     

    * SMPS & energy conversion (references with "GS" at the end like  dsPIC33FJ64GS610 http://www.microchip.com/SMPS  . On this previous link you should find the information you're looking for.

     

    There are several applications notes showing implementation of Parke & Clarke transformation (Vector control).

    I recommend the use of dsPIC33 family which is more powerful (40MIPS) than dsPIC30 and especially some devices have on-chip DMA which reduces CPU load as peripheral read / write dual PORT RAM without CPU assistance.

     

    You may also want to ask precise questions on Microchip dsPIC dedicated forums : http://www.microchip.com/forums/tt.aspx?forumid=178

     

    regards

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