NPC
Neste Apêndice apresenta o código escrito em linguagem C utilizado na geração dos pulsos do inversor NPC.
/*---*/
/* Filename: modulacao_vetorial.c */
/* Author: Antônio Cabral */
/* Date: 06/12/2010 */
/* Description: Gerador de pulsos */
/* Status: ok */
/*---*/ #define S_FUNCTION_NAME modulacao_vetorial
#define S_FUNCTION_LEVEL 2 #include "simstruc.h" #include "math.h" #ifndef MATLAB_MEX_FILE #include <brtenv.h> #endif
#define U(element) (*uPtrs[element]) /* Pointer to Input Port0 */
/* Define input and output widths */
#define NINPUTS 7
#define NOUTPUTS 12
/* Define number of states and assign labels*/
#define DSTATES 0
#define NPARAMS 0
//Constant coefficients and parameters
#define h 1.25e-4 // Sample time of pwm + controller
#define Ts 1.25e-4 // Período de chaveamento
/*====================* * S-function methods * *====================*/
ssSetNumContStates(S, 0); ssSetNumDiscStates(S, DSTATES); if (!ssSetNumInputPorts(S, 1)) return; ssSetInputPortWidth(S, 0, NINPUTS); ssSetInputPortDirectFeedThrough(S, 0, 1); if (!ssSetNumOutputPorts(S, 1)) return; ssSetOutputPortWidth(S, 0, NOUTPUTS); ssSetNumSampleTimes(S, 1); ssSetNumRWork(S, 0); ssSetNumIWork(S, 0); ssSetNumPWork(S, 0); ssSetNumModes(S, 0); ssSetNumNonsampledZCs(S, 0);
/* Take care when specifying exception free code - see sfuntmpl_doc.c */ ssSetOptions(S, SS_OPTION_EXCEPTION_FREE_CODE);
}
/* Function: mdlInitializeSampleTimes =========================================*/ static void mdlInitializeSampleTimes(SimStruct *S)
{ ssSetSampleTime(S, 0, INHERITED_SAMPLE_TIME); ssSetOffsetTime(S, 0, 0.0); } #define MDL_INITIALIZE_CONDITIONS /* Function: mdlInitializeConditions ========================================*/ static void mdlInitializeConditions(SimStruct *S)
{
real_T *x0 = ssGetRealDiscStates(S); }
#define MDL_START
static void mdlStart(SimStruct *S) {
#ifndef MATLAB_MEX_FILE
/* define IO group pins (0..7) as output */ ds1103_bit_io_config(DS1103_DIO1_OUT); /* write HIGH to pin IO1 */
ds1103_bit_io_set(DS1103_DIO1_SET); #endif
}
/* Function: mdlOutputs =======================================================*/ static void mdlOutputs(SimStruct *S, int_T tid)
{
real_T *x = ssGetRealDiscStates(S);
InputRealPtrsType uPtrs = ssGetInputPortRealSignalPtrs(S,0);
/* Local variables */
/* Temporary variables */
/* Variáveis do PWM */
real_T Chave_a1, Chave_a2, Chave_b1, Chave_b2, Chave_c1, Chave_c2; real_T Chave_a3, Chave_a4, Chave_b3, Chave_b4, Chave_c3, Chave_c4; real_T u1a, u2a, u3a, u4a, u5a, u6a, u7a;
real_T u1b, u2b, u3b, u4b, u5b, u6b, u7b; real_T u1c, u2c, u3c, u4c, u5c, u6c, u7c;
real_T taupa_ref, tauna_ref, taupb_ref, taunb_ref, taupc_ref, taunc_ref, Triang;
/* Assign inputs to local variables */
taupa_ref = U(0); // Length of stay of the key A phase in the state P
tauna_ref = U(1); // Length of stay of the key A phase in the state N
taupb_ref = U(2); // Length of stay of the key B phase in the state P
taunb_ref = U(3); // Length of stay of the key B phase in the state N
taupc_ref = U(4); // Length of stay of the key C phase in the state P
taunc_ref = U(5); // Length of stay of the key C phase in the state N
Triang = U(6);
// Generation of pulses of arm A \\
u1a = Triang; u2a = taupa_ref; u3a = Ts-tauna_ref; u4a = Ts; u5a = Ts+tauna_ref; u6a = 2*Ts-taupa_ref; u7a = 2*Ts; if (u2a>u1a) { //Da=P; Chave_a1 = 1; Chave_a2 = 1; Chave_a3 = 0; Chave_a4 = 0; } else if (u3a>u1a) { //Da=O; Chave_a1 = 0; Chave_a2 = 1; Chave_a3 = 1; Chave_a4 = 0; } else if (u4a>u1a) { //Da=N; Chave_a1 = 0; Chave_a2 = 0; Chave_a3 = 1; Chave_a4 = 1; }
} else if (u6a>u1a) { //Da=O; Chave_a1 = 0; Chave_a2 = 1; Chave_a3 = 1; Chave_a4 = 0; } else if (u7a>u1a) { //Da=P; Chave_a1 = 1; Chave_a2 = 1; Chave_a3 = 0; Chave_a4 = 0; }
// Generation of pulses of arm B\\
u1b = Triang; u2b = taupb_ref; u3b = Ts-taunb_ref; u4b = Ts; u5b = Ts+taunb_ref; u6b = 2*Ts-taupb_ref; u7b = 2*Ts; if (u2b>u1b) { //Db=P; Chave_b1 = 1; Chave_b2 = 1; Chave_b3 = 0; Chave_b4 = 0; } else if (u3b>u1b) { //Db=O; Chave_b1 = 0; Chave_b2 = 1; Chave_b3 = 1; Chave_b4 = 0; } else if (u4b>u1b) { //Db=N; Chave_b1 = 0; Chave_b2 = 0; Chave_b3 = 1; Chave_b4 = 1; } else if (u5b>u1b) { //Db=N; Chave_b1 = 0; Chave_b2 = 0; Chave_b3 = 1; Chave_b4 = 1;
} else if (u6b>u1b) { //Db=O; Chave_b1 = 0; Chave_b2 = 1; Chave_b3 = 1; Chave_b4 = 0; } else if (u7b>u1b) { //Db=P; Chave_b1 = 1; Chave_b2 = 1; Chave_b3 = 0; Chave_b4 = 0; }
// Generation of pulses of arm C\\
u1c = Triang; u2c = taupc_ref; u3c = Ts-taunc_ref; u4c = Ts; u5c = Ts+taunc_ref; u6c = 2*Ts-taupc_ref; u7c = 2*Ts; if (u2c>u1c) { //Dc=P; Chave_c1 = 1; Chave_c2 = 1; Chave_c3 = 0; Chave_c4 = 0; } else if (u3c>u1c) { //Dc=O; Chave_c1 = 0; Chave_c2 = 1; Chave_c3 = 1; Chave_c4 = 0; } else if (u4c>u1c) { //Dc=N; Chave_c1 = 0; Chave_c2 = 0; Chave_c3 = 1; Chave_c4 = 1; } else if (u5c>u1c) { //Dc=N; Chave_c1 = 0; Chave_c2 = 0; Chave_c3 = 1; Chave_c4 = 1; } else if (u6c>u1c) { //Dc=O;
{ //Dc=P; Chave_c1 = 1; Chave_c2 = 1; Chave_c3 = 0; Chave_c4 = 0; } /* Compute outputs */ y[0]=Chave_a1; y[1]=Chave_a2; y[2]=Chave_a3; y[3]=Chave_a4; y[4]=Chave_b1; y[5]=Chave_b2; y[6]=Chave_b3; y[7]=Chave_b4; y[8]=Chave_c1; y[9]=Chave_c2; y[10]=Chave_c3; y[11]=Chave_c4; } #define MDL_UPDATE /* Function: mdlUpdate ====================================================== */ static void mdlUpdate(SimStruct *S, int_T tid)
{
real_T *x = ssGetRealDiscStates(S);
InputRealPtrsType uPtrs = ssGetInputPortRealSignalPtrs(S,0);
}
/* Function: mdlTerminate ===================================================== */ static void mdlTerminate(SimStruct *S)
{
UNUSED_ARG(S); /* unused input argument */ }
#ifdef MATLAB_MEX_FILE /* Is this file being compiled as a MEX-file? */
#include "simulink.c" /* MEX-file interface mechanism */
#else
#include "cg_sfun.h" /* Code generation registration function */
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