DSP空间矢量脉宽调制技术

1、第6章空间矢量脉宽调制技术例1、CLARK变换的DSP实现图CLARK变换实现波形图/*CLARKE变换相关变量定义*/typedefstructfloat32As;输入：A相定子电流float32Bs;/输入：B相定子电流float32Alpha;/输出：静止坐标系d轴定子电流float32Beta;/输出：静止坐标系q轴定子电流voidi*calc)();/计算函数指针CLARKE;typedefCLARKE*CLARKE_handle;/*定义CLARKE变换初始化参数*/#defineCLARKE_DEFAULTS0,0,0,0,(void(*)(Uint32)clarke_calc/

2、*CLARKE变换函数原型CLARKE.C*/voidclarke_calc(CLARKE_handle);#includedmctype.h#includeclarke.hvoidclarke_calc(CLARKE*v)(v-Alpha=v-As;v-Beta=(v-As+2*v-Bs)*0.57735026918963;/1/sqrt(3)=0.57735026918963例2、PARK变换的DSP实现Id图PARK变换DSP实现坐标映射/*PARK变换相关变量定义*/typedefstructfloat32Alpha;/输入：静止坐标系d轴定子变量loat32Beta;/输入：静止坐标

3、系q轴定子变量float32Angle;/输入：转子角度（弧度）float32Ds;/输出：旋转d轴定子变量（M轴）float32Qs;/输出：旋转q轴定子变量（T轴）void(*calc)();/函数指针PARK;typedefPARK*PARK_handle;/*PARK变换变量初始化参数*/#definePARK_DEFAULTS0,0,0,0,0,(void(*)(Uint32)park_calc/*PARK函数原型*/voidpark_calc(PARK_handle);#includedmctype.h#includepark.hexternfloat32sin_tab口；void

4、park_calc(PARK*v)float32Cosine,Sine;/采用查表法/(PI/2)/(2*PI)=0.25/(PI/2)/(2*PI)*256=0.25*256=64/(PI/2)-2*PI)/(2*PI)=-0.75/(PI/2)-2*PI)/(2*PI)*256=-0.75*256=-192/查表发求解正弦if(v-Angle+0.251.0)Sine=sin_tab(int16)(v-Angle*256);Cosine=sin_tab(int16)(v-Angle*256)-192;elseSine=sin_tab(int16)(v-Angle*256);Cosine=s

5、in_tab(int16)(v-Angle*256)+64;v-Ds=v-Alpha*Cosine+v-Beta*Sine;v-Qs=v-Beta*Cosine-v-Alpha*Sine;图6.7PARK变换坐标映射图/*PARK逆变换参数定义*/typedefstructfloatds;/*输出：定子参考坐标系d-轴变量*/floatqs;/*输出：定子参考坐标系q-轴变量*/floatang;/*输入：转子车t动角度(rad)*/floatde;/*输入：旋转d-轴定子变量*/floatqe;/*输入：旋转q-轴定子变量*/void(*calc)();/*计算函数指针*/IPARK;typ

6、edefIPARK*IPARK_handle;/*DefaultinitalizerfortheIPARKobject.*/#defineIPARK_DEFAULTS0,0,0,0,0,(void(*)(long)ipark_calc/*逆变换函数IPARK.C*/voidipark_calc(IPARK_handle);/*文件名称：IPARK.C*/#includeipark.hexternfloatsin_tab;voidipark_calc(IPARK*v)floatcos_ang,sin_ang;/*采用查表法计算正弦角度*/*(PI/2)/(2*PI)=0.25*/*(PI/2)/

7、(2*PI)*256=0.25*256=64*/*(PI/2)-2*PI)/(2*PI)=-0.75*/*(PI/2)-2*PI)/(2*PI)*256=-0.75*256=-192*/if(v-ang+0.251)sin_ang=sin_tab(int)(v-ang*256);cos_ang=sin_tab(int)(v-ang*256)-192;elsesin_ang=sin_tab(int)(v-ang*256);cos_ang=sin_tab(int)(v-ang*256)+64;v-ds=v-de*cos_ang-v-qe*sin_ang;v-qs=v-qe*cos_ang+v-de

8、*sin_ang;例3、空间矢量的算法程序/*空间矢量的产生：SVGEN_DQ.C(IQversion)*/#includeIQmathLib.h/IncludeheaderforIQmathlibrary/DontforgettosetaproperGLOBAL_QinIQmathLib.hfile#includedmctype.h#includesvgen_dq.hvoidsvgendq_calc(SVGENDQ*v)_iqVa,Vb,Vc,t1,t2;Uint32Sector=0;/SectoristreatedasQ0-independentlywithglobalQ/CLARKE逆变

9、换Va=v-Ubeta;Vb=_IQmpy(_IQ(-0.5),v-Ubeta)+_IQmpy(_IQ(0.8660254),v-Ualpha);Vc=_IQmpy(_IQ(-0.5),v-Ubeta)-_IQmpy(_IQ(0.8660254),v-Ualpha);/0.8660254=sqrt(3)/2/60o扇区确定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)计算Va=v-Ubeta;/X=VaVb=_IQmpy(_IQ(0.5),v-Ubeta)+_I

10、Qmpy(_IQ(0.8660254),v-Ualpha);/Y=VbVc=_IQmpy(_IQ(0.5),v-Ubeta)-_IQmpy(_IQ(0.8660254),v-Ualpha);/Z=Vcif(Sector=0)/Sector0:当(U,U)=(0,0)(v-Ta=_IQ(0.5);v-Tb=_IQ(0.5);v-Tc=_IQ(0.5);)if(Sector=1)/Sector1:t1=Z和t2=Y(abc-Tb,Ta,Tc)(t1=Vc;t2=Vb;v-Tb=_IQmpy(_IQ(0.5),(_IQ(1)-t1-t2);/tbon=(1-t1-t2)/2v-Ta=v-Tb+t1;

11、/taon=tbon+t1v-Tc=v-Ta+t2;/tcon=taon+t2elseif(Sector=2)/Sector2:t1=Y和t2=-X(abc-Ta,Tc,Tb)t1=Vb;t2=-Va;v-Ta=_IQmpy(_IQ(0.5),(_IQ(1)-t1-t2);/taon=(1-t1-t2)/2v-Tc=v-Ta+t1;/tcon=taon+t1v-Tb=v-Tc+t2;/tbon=tcon+t2elseif(Sector=3)/Sector3:t1=-Z和t2=X(abc-Ta,Tb,Tc)t1=-Vc;t2=Va;v-Ta=_IQmpy(_IQ(0.5),(_IQ(1)-t1-

12、t2);/taon=(1-t1-t2)/2v-Tb=v-Ta+t1;/tbon=taon+t1v-Tc=v-Tb+t2;/tcon=tbon+t2elseif(Sector=4)/Sector4:t1=-X和t2=Z(abc-Tc,Tb,Ta)t1=-Va;t2=Vc;v-Tc=_IQmpy(_IQ(0.5),(_IQ(1)-t1-t2);/tcon=(1-t1-t2)/2v-Tb=v-Tc+t1;/tbon=tcon+t1v-Ta=v-Tb+t2;/taon=tbon+t2elseif(Sector=5)/Sector5:t1=X和t2=-Y(abc-Tb,Tc,Ta)t1=Va;/tbon=(1-t1-t2)/2/tcon=tbon+t1t2=-Vb;v-Tb=_IQmpy(_IQ(0.5),(_IQ(1)-t1-t2);v-Tc=v-Tb+t1;v-Ta=v-Tc+t2;/taon=tcon+t2elseif(Sector=6)/Sector6:t1=-Y和t2=-Z(abc-Tc,Ta,Tb)t1=-Vb;/tcon=(1-t1-t2)/2/taon=tcon+t1/tbon=taon+t2t2=-Vc;v-Tc=_IQmpy(_IQ(0.5),(_IQ(1)-t1-t2);v-Ta=v-Tc+t