SPRUHJ1I January 2013 – October 2021 TMS320F2802-Q1 , TMS320F28026-Q1 , TMS320F28026F , TMS320F28027-Q1 , TMS320F28027F , TMS320F28027F-Q1 , TMS320F28052-Q1 , TMS320F28052F , TMS320F28052F-Q1 , TMS320F28052M , TMS320F28052M-Q1 , TMS320F28054-Q1 , TMS320F28054F , TMS320F28054F-Q1 , TMS320F28054M , TMS320F28054M-Q1 , TMS320F2806-Q1 , TMS320F28062-Q1 , TMS320F28062F , TMS320F28062F-Q1 , TMS320F28068F , TMS320F28068M , TMS320F28069-Q1 , TMS320F28069F , TMS320F28069F-Q1 , TMS320F28069M , TMS320F28069M-Q1
In the case of a non-salient PMSM motor, Ls_d and Ls_q are equal. In this example, a phase-to-phase stator inductance is shown with a value of 0.40 mH. We need to convert that value to phase-to-neutral inductance in a Y connected motor, following the same procedure as used with the previous parameter we simply divide by 2 as follows:
The resulting value is then written in user.h as follows:
#define USER_MOTOR_Ls_d (0.0002)
#define USER_MOTOR_Ls_q (0.0002)
In the case of different Ls_d and Ls_q, simply set the corresponding value to the correct definition in user.h. In the motor, if delta connected as opposed to Y connected, then a conversion from delta to Y needs to be done to set the resistance value. For example, if the delta Ls_d (delta) value is known to be 0.3 mH, the Ls_d (Y) value would be Ls_d (Y) = Ls_d (delta) / 3 = 0.1 mH.