It is a surprise to see the SVGEN macro in file of svgen.h out put Ta, Tb, Tc with one is negative another.
the file located at: C:\TI\controlSUITE\libs\app_libs\motor_control\math_blocks\v4.2.
For example, when (v.VecSector==2 || v.VecSector==5) ,
v.Tb= v.tmp1; v.Tc=-v.tmp1 = -v.Tb
In the document "DMC MATH_v13.1.pdf"
The Ta, Tb, Tc are "Duty ratio of PWM1 (CMPR1 register value as a fraction of associated period register, TxPR, value)."
below is the copy of svgen.h.
Please help to make this clear,
Thank you,
*------------------------------------------------------------------------------
Space Vector Generator (SVGEN) Macro Definition
------------------------------------------------------------------------------*/
#define SVGENDQ_MACRO(v) \
v.tmp1= v.Ubeta; \
v.tmp2= _IQdiv2(v.Ubeta) + (_IQmpy(_IQ(0.866),v.Ualpha)); \
v.tmp3= v.tmp2 - v.tmp1; \
\
v.VecSector=3; \
v.VecSector=(v.tmp2> 0)?( v.VecSector-1):v.VecSector; \
v.VecSector=(v.tmp3> 0)?( v.VecSector-1):v.VecSector; \
v.VecSector=(v.tmp1< 0)?(7-v.VecSector) :v.VecSector; \
\
if (v.VecSector==1 || v.VecSector==4) \
{ v.Ta= v.tmp2; \
v.Tb= v.tmp1-v.tmp3; \
v.Tc=-v.tmp2; \
} \
\
else if(v.VecSector==2 || v.VecSector==5) \
{ v.Ta= v.tmp3+v.tmp2; \
v.Tb= v.tmp1; \
v.Tc=-v.tmp1; \
} \
\
else \
{ v.Ta= v.tmp3; \
v.Tb=-v.tmp3; \
v.Tc=-(v.tmp1+v.tmp2); \
} \
\
#endif // __SVGEN_H__