TMS320F28335_SVPWM完整程序
1、主函数
/*===============头文件================*/
#include "DSP2833x_Project.h"
#include "C28x_FPU_FastRTS.h"
#include 2、svpwm.c
/*===============SVPWM_2L.c================*/
#include "DSP2833x_Project.h"
#include "C28x_FPU_FastRTS.h"
#include <math.h>
#include "SVPWM_2L.h"
//======== Definations for functions ===========================
//**********************************
/*
@ Description:
@ Param
@ Return
*/
//**********************************
void svpwm_2l_calc(SVPWM_2L *p)
{
float temp;
float X,Y,Z, t1,t2;
Uint16 A,B,C,N,Sector;
float Ta, Tb, Tc;
float K=1.73205081;//sqrt(3)
p->T=1.0;//将整个调制周期归一化处理
X= K*p->Ubeta/p->Vdc*p->T;
Y=(K*p->Ubeta+3*p->Ualpha)/(2*p->Vdc)*p->T;
Z=(K*p->Ubeta-3*p->Ualpha)/(2*p->Vdc)*p->T;
//
if(p->Ubeta>0)
{A=1;}
else
{A=0;}
if( (K*p->Ualpha - p->Ubeta)>0 )
{B=1;}
else
{B=0;}
if((-K*p->Ualpha - p->Ubeta)>0)
{C=1;}
else
{C=0;}
N=A+2*B+4*C;
//
switch(N)
{
case 1:{Sector=2;break;}
case 2:{Sector=6;break;}
case 3:{Sector=1;break;}
case 4:{Sector=4;break;}
case 5:{Sector=3;break;}
case 6:{Sector=5;break;}
default:{;}
}
//
switch(Sector)
{
case 1: {t1=-Z; t2= X;break;}
case 2: {t1= Z; t2= Y;break;}
case 3: {t1= X; t2=-Y;break;}
case 4: {t1=-X; t2= Z;break;}
case 5: {t1=-Y; t2=-Z;break;}
case 6: {t1= Y; t2=-X;break;}
default:{;}
}
if((t1+t2)>p->T)//对过调制情况进行调整
{
temp=t1+t2;
t1=t1*p->T/temp;
t2=t2*p->T/temp;
}
//
Ta=(p->T-t1-t2)/4;//作用时间分配
Tb=Ta+t1/2;
Tc=Tb+t2/2;
switch(Sector)
{
case 1: {p->Tcmpa=Ta; p->Tcmpb=Tb; p->Tcmpc=Tc; break;}
case 2: {p->Tcmpa=Tb; p->Tcmpb=Ta; p->Tcmpc=Tc; break;}
case 3: {p->Tcmpa=Tc; p->Tcmpb=Ta; p->Tcmpc=Tb; break;}
case 4: {p->Tcmpa=Tc; p->Tcmpb=Tb; p->Tcmpc=Ta; break;}
case 5: {p->Tcmpa=Tb; p->Tcmpb=Tc; p->Tcmpc=Ta; break;}
case 6: {p->Tcmpa=Ta; p->Tcmpb=Tc; p->Tcmpc=Tb; break;}
default:{;}
}
}
//==============================================================
//End of file.
//==============================================================3、svpwm.h
/*===============SVPWM_2L.h================*/
#ifndef SVPWM_2L_H
#define SVPWM_2L_H
#include "C28x_FPU_FastRTS.h"
//-----------------------------------------------------------------------------
// Define the structure of the POSSPEED Object
//-----------------------------------------------------------------------------
typedef struct { float Ualpha; // Input: reference alpha-axis phase voltage
float Ubeta; // Input: reference beta-axis phase voltage
float Vdc; // Input: DC voltage
float T; // Input: PWM Modulation Period
float Tcmpa; // Output: reference phase-a switching function
float Tcmpb; // Output: reference phase-b switching function
float Tcmpc; // Output: reference phase-c switching function
void (*calc)(); // Pointer to calculation function
} SVPWM_2L;
//-----------------------------------------------------------------------------
// Define a POSSPEED_handle
//-----------------------------------------------------------------------------
typedef SVPWM_2L *SVPWM_2L_handle;
//-----------------------------------------------------------------------------
// Default initializer for the POSSPEED Object.
//-----------------------------------------------------------------------------
#define SVPWM_2L_DEFAULTS {0,0,0,1.0,\
1,1,1,\
(void (*)(Uint32))svpwm_2l_calc}
//-----------------------------------------------------------------------------
// Prototypes for the functions in posspeed.c
//-----------------------------------------------------------------------------
void svpwm_2l_calc(SVPWM_2L_handle);
#endif
//==============================================================
//End of file.
//==============================================================