SPLL_1ph_SOGI问提

controlsuit 里的SPLL_1ph_SOGI程序当输入电压大于40V锁相就不对了，不知什么原因

Seven Han：

请问您使用的例程具体是哪个？是如何操作的呢？可否详细点？

q l：

回复 Seven Han:

#include "Solar_F.h"

//*********** Structure Init Function ****//void SPLL_1ph_SOGI_F_init(int Grid_freq, float32 DELTA_T, SPLL_1ph_SOGI_F *spll_obj){ spll_obj->u[0]=(float32)(0.0); spll_obj->u[1]=(float32)(0.0); spll_obj->u[2]=(float32)(0.0); spll_obj->osg_u[0]=(float32)(0.0); spll_obj->osg_u[1]=(float32)(0.0); spll_obj->osg_u[2]=(float32)(0.0); spll_obj->osg_qu[0]=(float32)(0.0); spll_obj->osg_qu[1]=(float32)(0.0); spll_obj->osg_qu[2]=(float32)(0.0); spll_obj->u_Q[0]=(float32)(0.0); spll_obj->u_Q[1]=(float32)(0.0); spll_obj->u_D[0]=(float32)(0.0); spll_obj->u_D[1]=(float32)(0.0); spll_obj->ylf[0]=(float32)(0.0); spll_obj->ylf[1]=(float32)(0.0); spll_obj->fo=(float32)(0.0); spll_obj->fn=(float32)(Grid_freq); spll_obj->theta[0]=(float32)(0.0); spll_obj->theta[1]=(float32)(0.0); spll_obj->sin=(float32)(0.0); spll_obj->cos=(float32)(0.0);

// loop filter coefficients for 20kHz spll_obj->lpf_coeff.B0_lf=(float32)(166.9743); spll_obj->lpf_coeff.B1_lf=(float32)(-166.266); spll_obj->lpf_coeff.A1_lf=(float32)(-1.0); spll_obj->delta_T=DELTA_T;}

//*********** Structure Coeff Update *****//void SPLL_1ph_SOGI_F_coeff_update(float32 delta_T, float32 wn, SPLL_1ph_SOGI_F *spll){ float32 osgx,osgy,temp; spll->osg_coeff.osg_k=(float32)(0.5); osgx=(float32)(2.0*0.5*wn*delta_T); spll->osg_coeff.osg_x=(float32)(osgx); osgy=(float32)(wn*delta_T*wn*delta_T); spll->osg_coeff.osg_y=(float32)(osgy); temp=(float32)1.0/(osgx+osgy+4.0); spll->osg_coeff.osg_b0=((float32)osgx*temp); spll->osg_coeff.osg_b2=((float32)(-1.0)*spll->osg_coeff.osg_b0); spll->osg_coeff.osg_a1=((float32)(2.0*(4.0-osgy))*temp); spll->osg_coeff.osg_a2=((float32)(osgx-osgy-4)*temp); spll->osg_coeff.osg_qb0=((float32)(0.5*osgy)*temp); spll->osg_coeff.osg_qb1=(spll->osg_coeff.osg_qb0*(float32)(2.0)); spll->osg_coeff.osg_qb2=spll->osg_coeff.osg_qb0;}

//*********** Function Definition ********//void SPLL_1ph_SOGI_F_FUNC(SPLL_1ph_SOGI_F *spll_obj){ // Update the spll_obj->u[0] with the grid value before calling this routine

//——————————-// // Orthogonal Signal Generator // //——————————-// spll_obj->osg_u[0]=(spll_obj->osg_coeff.osg_b0*(spll_obj->u[0]-spll_obj->u[2])) + (spll_obj->osg_coeff.osg_a1*spll_obj->osg_u[1]) + (spll_obj->osg_coeff.osg_a2*spll_obj->osg_u[2]);

spll_obj->osg_u[2]=spll_obj->osg_u[1]; spll_obj->osg_u[1]=spll_obj->osg_u[0];

spll_obj->osg_qu[0]=(spll_obj->osg_coeff.osg_qb0*spll_obj->u[0]) + (spll_obj->osg_coeff.osg_qb1*spll_obj->u[1]) + (spll_obj->osg_coeff.osg_qb2*spll_obj->u[2]) + (spll_obj->osg_coeff.osg_a1*spll_obj->osg_qu[1]) + (spll_obj->osg_coeff.osg_a2*spll_obj->osg_qu[2]);

spll_obj->osg_qu[2]=spll_obj->osg_qu[1]; spll_obj->osg_qu[1]=spll_obj->osg_qu[0];

spll_obj->u[2]=spll_obj->u[1]; spll_obj->u[1]=spll_obj->u[0]; //——————————————————-// // Park Transform from alpha beta to d-q axis // //——————————————————-// spll_obj->u_Q[0]=(spll_obj->cos*spll_obj->osg_u[0]) + (spll_obj->sin*spll_obj->osg_qu[0]); spll_obj->u_D[0]=(spll_obj->cos*spll_obj->osg_qu[0]) – (spll_obj->sin*spll_obj->osg_u[0]);

//———————————// // Loop Filter // //———————————// spll_obj->ylf[0]=spll_obj->ylf[1] + (spll_obj->lpf_coeff.B0_lf*spll_obj->u_Q[0]) + (spll_obj->lpf_coeff.B1_lf*spll_obj->u_Q[1]); spll_obj->ylf[1]=spll_obj->ylf[0];

spll_obj->u_Q[1]=spll_obj->u_Q[0];

//———————————// // VCO // //———————————// spll_obj->fo=spll_obj->fn+spll_obj->ylf[0]; spll_obj->theta[0]=spll_obj->theta[1] + (spll_obj->fo*spll_obj->delta_T)*(float32)(2.0*3.1415926); if(spll_obj->theta[0]>(float32)(2.0*3.1415926)) spll_obj->theta[0]=(float32)(0.0); spll_obj->theta[1]=spll_obj->theta[0]; spll_obj->sin=(float32)sin(spll_obj->theta[0]); spll_obj->cos=(float32)cos(spll_obj->theta[0]);}

q l：

回复 q l:

就是这个历程，输入交流电压大于40V锁相输出就乱了

q l：

回复 Seven Han:

是不是电压高了要改什么系数

user6270450：

请问你的源文件加的是什么，我的一直显示有错误，可以请教一下吗