topic Question about initialization in 3-phase Sensorless BLDC in S12 / MagniV Microcontrollers https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Question-about-initialization-in-3-phase-Sensorless-BLDC/m-p/775705#M15455 <HTML><HEAD></HEAD><BODY><P>Hello Team,</P><P></P><P>I use MC9S12ZVML128_BLDC_Sensorless example project.</P><P><SPAN lang="en"><SPAN>Why set the duty to 50% at initialization?</SPAN></SPAN><SPAN style="display: none;"></SPAN></P></BODY></HTML> Tue, 27 Feb 2018 08:53:53 GMT 菜緒西井 2018-02-27T08:53:53Z Question about initialization in 3-phase Sensorless BLDC https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Question-about-initialization-in-3-phase-Sensorless-BLDC/m-p/775705#M15455 <HTML><HEAD></HEAD><BODY><P>Hello Team,</P><P></P><P>I use MC9S12ZVML128_BLDC_Sensorless example project.</P><P><SPAN lang="en"><SPAN>Why set the duty to 50% at initialization?</SPAN></SPAN><SPAN style="display: none;"></SPAN></P></BODY></HTML> Tue, 27 Feb 2018 08:53:53 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Question-about-initialization-in-3-phase-Sensorless-BLDC/m-p/775705#M15455 菜緒西井 2018-02-27T08:53:53Z Re: Question about initialization in 3-phase Sensorless BLDC https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Question-about-initialization-in-3-phase-Sensorless-BLDC/m-p/775706#M15456 <HTML><HEAD></HEAD><BODY><P>Hello, could you please check out the new software package on the web?&nbsp;<A class="link-titled" href="https://www.nxp.com/pages/3-phase-sensorless-bldc-development-kit-with-s12-magniv-s12zvm:MTRCKTSBNZVM128?tab=Design_Tools_Tab" title="https://www.nxp.com/pages/3-phase-sensorless-bldc-development-kit-with-s12-magniv-s12zvm:MTRCKTSBNZVM128?tab=Design_Tools_Tab">3-phase Sensorless BLDC Development Kit|NXP</A>&nbsp; I believe the 50% duty-cycle initial setting is not presented there.</P><P>However, if the switching strategy is a bi-polar switching, then it would be a good idea to set a neutral duty-cycle at the very start.</P><P></P><P>BR</P><P>Matej</P></BODY></HTML> Wed, 07 Mar 2018 14:18:36 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Question-about-initialization-in-3-phase-Sensorless-BLDC/m-p/775706#M15456 pachamatej 2018-03-07T14:18:36Z