inv_isr.c

SVPWM算法的DSP源码已通过硬件验证

//
// Copyright (c) 2007, 北京动力源科技股份有限公司
// All rights reserved.
//
// 项目名称： 
// 文件名称： INV_Isr.c
//
// 版    本： Ver 1.00
//
// 完成日期： 2011年2月
// 作    者： liuyaqiong
//
// 修订日期：
// 修 订 者： 
//
// 编辑工具：UEStudio（TAB should be set to 4）
//
// 编译工具：Code Composer Studio V3.3


//--------------------------------------------------------------------------------
// Include files
//--------------------------------------------------------------------------------


#include "DSP280x_Examples.h"   // Device Headerfile and Examples Include File
#include "DSP280x_Device.h"     // DSP2803x Headerfile Include File
#include "Global.h"
#include "Drv_dsp280x_GPIO.h"
//--------------------------------------------------------------------------------
// 宏定义
//--------------------------------------------------------------------------------
#define		ECAP48HZ	2083333L // 1/48/10*1000000000
#define		ECAP52HZ	1923076L // 1/52/10*1000000000

#define		iq16KPPRD	1000L
#define		iq16KIPRD	2000L

#define		LOW			0
#define		HIGH		1

#define		PHASESYNC	GpioDataRegs.GPADAT.bit.GPIO19  

//--------------------------------------------------------------------------------
// 变量声明
//--------------------------------------------------------------------------------


Uint32	ulSin[320];

//正弦波表需要修正，过零电有畸变
const	Uint16	iq16SIN_TAB[601] = {0, 572, 572, 572, 572, 572, 686, 801, 915, 1029,
							1144, 1258, 1372, 1487, 1601, 1716, 1830, 1944, 2059, 2173, 
							2287, 2401, 2516, 2630, 2744, 2859, 2973, 3087, 3201, 3316,
							3430, 3544, 3658, 3773, 3887, 4001, 4115, 4229, 4343, 4457, 
							4572, 4686, 4800, 4914, 5028, 5142, 5256, 5370, 5484, 5598, 
							5712, 5826, 5940, 6054, 6167, 6281, 6395, 6509, 6623, 6737,
							6850, 6964, 7078, 7192, 7305, 7419, 7533, 7646, 7760, 7873, 
							7987, 8100, 8214, 8327, 8441, 8554, 8668, 8781, 8894, 9008, 
							9121, 9234, 9347, 9461, 9574, 9687, 9800, 9913, 10026, 10139,
							10252, 10365, 10478, 10591, 10704, 10817, 10929, 11042, 11155, 11268,
	   					    11380, 11493, 11605, 11718, 11831, 11943, 12055, 12168, 12280, 12393, 
						    12505, 12617, 12729, 12842, 12954, 13066, 13178, 13290, 13402, 13514,
						    13626, 13738, 13849, 13961, 14073, 14185, 14296, 14408, 14519, 14631, 
						    14742, 14854, 14965, 15077, 15188, 15299, 15410, 15521, 15633, 15744, 
					        15855, 15966, 16076, 16187, 16298, 16409, 16520, 16630, 16741, 16851,
						    16962, 17072, 17183, 17293, 17403, 17514, 17624, 17734, 17844, 17954,
						    18064, 18174, 18284, 18394, 18504, 18613, 18723, 18832, 18942, 19051, 
						    19161, 19270, 19380, 19489, 19598, 19707, 19816, 19925, 20034, 20143,
						    20252, 20360, 20469, 20578, 20686, 20795, 20903, 21012, 21120, 21228, 
						    21336, 21445, 21553, 21661, 21769, 21876, 21984, 22092, 22200, 22307, 
						    22415, 22522, 22629, 22737, 22844, 22951, 23058, 23165, 23272, 23379,
						    23486, 23593, 23699, 23806, 23913, 24019, 24125, 24232, 24338, 24444, 
						    24550, 24656, 24762, 24868, 24974, 25080, 25185, 25291, 25396, 25502, 
						    25607, 25712, 25817, 25922, 26027 ,26132, 26237, 26342, 26447, 26551,
							26656, 26760, 26865, 26969, 27073, 27177, 27281, 27385, 27489, 27593,
							27697, 27800, 27904, 28007, 28111, 28214, 28317, 28420, 28523, 28626, 
							28729, 28832, 28935, 29037, 29140, 29242, 29344, 29447, 29549, 29651,
							29753, 29855, 29956, 30058, 30160, 30261, 30363, 30464, 30565, 30666, 
							30767, 30868, 30969, 31070, 31171, 31271, 31372, 31472, 31572, 31672, 
							31772, 31872, 31972, 32072, 32172, 32271, 32371, 32470, 32570, 32669,
							32768, 32867, 32966, 33065, 33163, 33262, 33361, 33459, 33557, 33655,
							33754, 33852, 33949, 34047, 34145, 34242, 34340, 34437, 34535, 34632,
							34729, 34826, 34923, 35019, 35116, 35212, 35309, 35405, 35501, 35597,
							35693, 35789, 35885, 35981, 36076, 36172, 36267, 36362, 36457, 36552,
							36647, 36742, 36837, 36931, 37026, 37120, 37214, 37308, 37402, 37496, 
							37590, 37684, 37777, 37870, 37964, 38057, 38150, 38243, 38336, 38429,
							38521, 38614, 38706, 38798, 38890, 38982, 39074, 39166, 39258, 39349,
							39441, 39532, 39623, 39714, 39805, 39896, 39986, 40077, 40167, 40258,
							40348, 40438, 40528, 40618, 40708, 40797, 40887, 40976, 41065, 41154, 
							41243, 41332, 41421, 41509, 41598, 41686, 41774, 41862, 41950, 42038,
							42126, 42213, 42301, 42388, 42475, 42562, 42649, 42736, 42823, 42909,
							42995, 43082, 43168, 43254, 43340, 43425, 43511, 43597, 43682, 43767,
							43852, 43937, 44022, 44107, 44191, 44275, 44360, 44444, 44528, 44612,
							44695, 44779, 44862, 44946, 45029, 45112, 45195, 45278, 45360, 45443,
							45525, 45607, 45689, 45771, 45853, 45935, 46016, 46098, 46179, 46260,
							46341, 46422, 46502, 46583, 46663, 46744, 46824, 46904, 46983, 47063,
							47143, 47222, 47301, 47380, 47459, 47538, 47617, 47695, 47774, 47852, 
							47930, 48008, 48086, 48163, 48241, 48318, 48395, 48472, 48549, 48626,
							48703, 48779, 48856, 48932, 49008, 49084, 49159, 49235, 49310, 49386,
							49461, 49536, 49610, 49685, 49760, 49834, 49908, 49982, 50056, 50130,
							50203, 50277, 50350, 50423, 50496, 50569, 50642, 50714, 50787, 50859,
							50931, 51003, 51075, 51146, 51218, 51289, 51360, 51431, 51502, 51573,
							51643, 51713, 51784, 51854, 51923, 51993, 52063, 52132, 52201, 52270, 
							52339, 52408, 52477, 52545, 52613, 52682, 52750, 52817, 52885, 52952,
							53020, 53087, 53154, 53221, 53287, 53354, 53420, 53486, 53552, 53618,
							53684, 53749, 53815, 53880, 53945, 54010, 54075, 54139, 54204, 54268,
							54332, 54396, 54459, 54523, 54586, 54650, 54713, 54775, 54838, 54901,
							54963, 55025, 55087, 55149, 55211, 55273, 55334, 55395, 55456, 55517,
							55578, 55638, 55699, 55759, 55819, 55879, 55938, 55998, 56057, 56116,
							56175, 56234, 56293, 56351, 56410, 56468, 56526, 56583, 56641, 56699,56755};
//--------------------------------------------------------------------------------
// 外部变量声明
//--------------------------------------------------------------------------------							




//--------------------------------------------------------------------------------
// 外部函数声明
//--------------------------------------------------------------------------------
extern	void	vInvCon(void);
extern  void	vGetAdResult(void);
extern  void  vSetVf(void);
extern  void  vInvCon(void);



// Interrupt routines:

interrupt void epwm1_isr(void)
{   
    

     
   static 	Uint16	uiSample;
	static	Uint16	uiSampleCnt = 0;
	static 	Uint32	ulSum = 0; 
	
  	//GpioDataRegs.GPATOGGLE.bit.GPIO30 = 1;//for test
  //Gpio8_toggle;
    uiFacNBCnt++;	//逆变计数值	
	uiSoftStartCnt++;
	uiFacSDCnt++;
  	uiSample = AdcMirror.ADCRESULT13;           // 采样结果值保存在uiSample变量
  	uiSampleCnt++;     							// 采样次数
  	ulSum += (Uint32)uiSample;

  	if (uiSampleCnt > 16)						// 采样次数超过16，滤波采样值
 	{  
		uiSampleTrue = (Uint16)(ulSum / (Uint32)uiSampleCnt);
    	uiKeyOk = 1;
		uiSampleCnt = 0;
		ulSum = 0;	
  	}


    vSetVf();   //缓起，设置调制深度
    vGetAdResult();//读取采样结果

// 逆变电压求和

  	uiVolNB_W =(uiVolNB_W > uiAdVRef)? (uiVolNB_W -uiAdVRef):( uiAdVRef-uiVolNB_W );
	uiVolNB_V =(uiVolNB_V > uiAdVRef)? (uiVolNB_V -uiAdVRef):( uiAdVRef-uiVolNB_V );
	uiVolNB_U =(uiVolNB_U > uiAdVRef)? (uiVolNB_U -uiAdVRef):( uiAdVRef-uiVolNB_U );
 	uiAddNBW +=( Uint32)uiVolNB_W;
	uiAddNBV += ( Uint32)uiVolNB_V;
	uiAddNBU += ( Uint32)uiVolNB_U;
	// 市电电压求和
  	uiVolSD_W =(uiVolSD_W > uiAdVRef)? (uiVolSD_W -uiAdVRef):( uiAdVRef-uiVolSD_W );
	uiVolSD_V =(uiVolSD_V > uiAdVRef)? (uiVolSD_V -uiAdVRef):( uiAdVRef-uiVolSD_V );
	uiVolSD_U =(uiVolSD_U > uiAdVRef)? (uiVolSD_U -uiAdVRef):( uiAdVRef-uiVolSD_U );
  	uiAddSDW += ( Uint32)uiVolSD_W;
	uiAddSDV +=( Uint32) uiVolSD_V;
	uiAddSDU += ( Uint32)uiVolSD_U;

    
   if (RunState.uiRunning == RUNNING)
	{
		// Phase accumulate
		PhaseSector.ulPhaseSum += PhaseSector.ulPhaseNew;
       //PhaseSector.ulPhaseSum1 = PhaseSector.ulPhaseSum + 0x800000;//补偿400us,400/20000*3600<<16
		// whole period? then accumulate from the origin, 3600 << 16 = e100000
		if (PhaseSector.ulPhaseSum >= 0xe100000)
		{
			PhaseSector.ulPhaseSum1 -= 0xe100000;
			PhaseSector.ulPhaseSum  -= 0xe100000;
			//------------------------------------------------------
		 //	求逆变有效值,根据电角度判断
			//------------------------------------------------------
			uiAvgNBW = uiAddNBW / uiFacNBCnt;
			uiAvgNBV = uiAddNBV / uiFacNBCnt;
			uiAvgNBU = uiAddNBU / uiFacNBCnt;
		    uiRmsNBW = (Uint16)((uiAvgNBW * 75)>>7);
			uiRmsNBV = (Uint16)((uiAvgNBV * 75)>>7);
			uiRmsNBU = (Uint16)((uiAvgNBU * 75)>>7);
			uiRmsNBAvg = (Uint16)((((uiRmsNBV+ uiRmsNBW +uiRmsNBU) * 6)>>4)-14);
			
			uiAddNBW = 0;
			uiAddNBV = 0;
			uiAddNBU = 0;
			uiFacNBCnt = 0;
		
		}

		// get region and angle
		PhaseSector.ulRegion = (PhaseSector.ulPhaseSum >> 16) / 600;
		PhaseSector.ulAngle = (PhaseSector.ulPhaseSum>> 16)  % 600;

		// get ti = sin(60-a) * vf
//		PhaseSector.uiTi = (Uint16)(((Uint32)iq16SIN_TAB[600 - PhaseSector.ulAngle] * (Uint32)PhaseSector.uiVfCoeff) >> 16);
		PhaseSector.uiTi = 600 - PhaseSector.ulAngle;
		PhaseSector.uiTi = iq16SIN_TAB[PhaseSector.uiTi];
		PhaseSector.uiTi = (Uint16)(((Uint32)PhaseSector.uiTi * (Uint32)PhaseSector.uiVfCoeff) >> 16);
		PhaseSector.uiTiBak = PhaseSector.uiTi;

		// get tj = sin(a) * vf 
		PhaseSector.uiTj = (Uint16)(((Uint32)iq16SIN_TAB[PhaseSector.ulAngle] * (Uint32)PhaseSector.uiVfCoeff) >> 16);

		// get titj
		PhaseSector.uiTiTj = PhaseSector.uiTi + PhaseSector.uiTj;

		// get v01
		if (PhaseSector.uiPrdHCarr > PhaseSector.uiTiTj)
		{
			PhaseSector.uiV01 = (PhaseSector.uiPrdHCarr - PhaseSector.uiTiTj) / 2;
		}
		else
		{
			PhaseSector.uiV01 = 0;
		}