Question about SVGEN used in ControlSuite.

1. It is a different type of PWM generation and is not classical sector based method, it adds a common mode voltage to all 3 phases. The output of SVPWM is similar to carrier based PWM with a common mode signal added to all three modulation signals of a three-phase PWM inverter. The common mode signal is made up of third harmonics of the supply frequency. The line-line output will not contain the common mode signal since the same common mode signal is added to all three phases.
2. The Ta/Tb/Tc is similar for pwm duty of 3 phase.
3. Right.

Thanks, Yanming.
But, i don't know exactly.

1. what you saying is the svgen_comm.h ?
In mathblock v4, svgen.h and sgven_comm.h are exist.
I would likte to know in detail how to determine the sector and PWM duty ratio Ta,Tb,Tc using the above code.
.
2. you mean that SEVGENDQ_MACRO(version 4) and SVGEN_MACRO(version 3) output Ta,Tb,Tc is similar but different?

%%%%%%%% ControlSuite math block Version 3 or later %%%%%%%%%%%%%%%

#define SVGEN_MACRO(v) \
\
Sector = 0; \
temp_sv1=_IQdiv2(v.Ubeta); /*divide by 2*/ \
temp_sv2=_IQmpy(_IQ(0.8660254),v.Ualpha); /* 0.8660254 = sqrt(3)/2*/ \
\
/* Inverse clarke transformation */ \
Va = v.Ubeta; \
Vb = -temp_sv1 + temp_sv2; \
Vc = -temp_sv1 - temp_sv2; \
/* 60 degree Sector determination */ \
if (Va>_IQ(0)) Sector = 1; \
if (Vb>_IQ(0)) Sector = Sector+2; \
if (Vc>_IQ(0)) Sector = Sector+4; \
/* X,Y,Z (Va,Vb,Vc) calculations X = Va, Y = Vb, Z = Vc */ \
Va = v.Ubeta; \
Vb = temp_sv1 + temp_sv2; \
Vc = temp_sv1 - temp_sv2; \
/* Sector 0: this is special case for (Ualpha,Ubeta) = (0,0)*/ \
\
switch(Sector) \
{ \
case 0: \
v.Ta = _IQ(0.5); \
v.Tb = _IQ(0.5); \
v.Tc = _IQ(0.5); \
break; \
case 1: /*Sector 1: t1=Z and t2=Y (abc ---> Tb,Ta,Tc)*/ \
t1 = Vc; \
t2 = Vb; \
v.Tb=_IQdiv2((_IQ(1)-t1-t2)); \
v.Ta = v.Tb+t1; /* taon = tbon+t1 */ \
v.Tc = v.Ta+t2; /* tcon = taon+t2 */ \
break; \
case 2: /* Sector 2: t1=Y and t2=-X (abc ---> Ta,Tc,Tb)*/ \
t1 = Vb; \
t2 = -Va; \
v.Ta=_IQdiv2((_IQ(1)-t1-t2)); \
v.Tc = v.Ta+t1; /* tcon = taon+t1 */ \
v.Tb = v.Tc+t2; /* tbon = tcon+t2 */ \
break; \
case 3: /* Sector 3: t1=-Z and t2=X (abc ---> Ta,Tb,Tc)*/ \
t1 = -Vc; \
t2 = Va; \
v.Ta=_IQdiv2((_IQ(1)-t1-t2)); \
v.Tb = v.Ta+t1; /* tbon = taon+t1 */ \
v.Tc = v.Tb+t2; /* tcon = tbon+t2 */ \
break; \
case 4: /* Sector 4: t1=-X and t2=Z (abc ---> Tc,Tb,Ta)*/ \
t1 = -Va; \
t2 = Vc; \
v.Tc=_IQdiv2((_IQ(1)-t1-t2)); \
v.Tb = v.Tc+t1; /* tbon = tcon+t1 */ \
v.Ta = v.Tb+t2; /* taon = tbon+t2 */ \
break; \
case 5: /* Sector 5: t1=X and t2=-Y (abc ---> Tb,Tc,Ta)*/ \
t1 = Va; \
t2 = -Vb; /* tbon = (1-t1-t2)/2 */ \
v.Tb=_IQdiv2((_IQ(1)-t1-t2)); \
v.Tc = v.Tb+t1; /* taon = tcon+t2 */ \
v.Ta = v.Tc+t2; \
break; \
case 6: /* Sector 6: t1=-Y and t2=-Z (abc ---> Tc,Ta,Tb)*/ \
t1 = -Vb; \
t2 = -Vc; \
v.Tc=_IQdiv2((_IQ(1)-t1-t2)); \
v.Ta = v.Tc+t1; /* taon = tcon+t1 */ \
v.Tb = v.Ta+t2; /* tbon = taon+t2 */ \
break; \
} \
/* Convert the unsigned GLOBAL_Q format (ranged (0,1)) ->.. */ \
/* ..signed GLOBAL_Q format (ranged (-1,1))*/ \
v.Ta = _IQmpy2(v.Ta-_IQ(0.5)); \
v.Tb = _IQmpy2(v.Tb-_IQ(0.5)); \
v.Tc = _IQmpy2(v.Tc-_IQ(0.5)); \

#endif // __SVGEN_DQ_H__

%%%%%%%% ControlSuite math block Version 4 or later %%%%%%%%%%%%%%%

#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__

It means svgen_comm.h which uses common mode. The output is the same in both svgen.h and sgven_comm.h, is the duty for pwm output. svgen_comm.h don't need to calculate the sector.