基于stm32的单相正弦变频稳压电源.docx

1、基于stm32的单相正弦变频稳压电源基于stm32的单相正弦变频稳压电源本项设计的的要求是：输入40V到60V。输出稳定的有效值18V，80W。重载超过5A时，过流保护。输出正弦波频率在20Hz到60Hz可调，步进为1Hz。我们做的DC/AC主电路采用全桥式，双极性SPWM，驱动芯片采用IR2110，极容易烧毁，使用时应倍加小心。用电流互感器采电流，电压互感器采电压，电压经过全波整流后送到stm32里。这个设计大部分工作由软件完成。难点在于要调度好中断之间的关系，理解PI的整个控制过程。如果理解有偏差，就会出现无论怎么改变PI的系数，输出都稳不了压。同时，硬件电路也要做好。做电源不要引太多线出

2、来，易受到干扰。尽量避免使用过零比较器，因为过零比较器的上升沿下降沿极不稳定，易导致单片机误触发。下面在多分享下我做这个设计时的调试经验：1，利用高级定时器TIM1，产生SPWM，中断优先级一定要设成最高抢断式2，带重载时波形会失真，原因主要是死区时间和开关管损耗，可以尝试下改小死区时间。3，我的PI思路是这样的，在一个正弦波周期内，做一次PI。具体实现方法是：电压互感器采过来的经全波整流的波对应一个比较器产生的方波，正弦波过零时产生上升沿翻转，触发单片机开始定时，技术到四分之一个周期时，打开AD和DMA，在峰值处连续采14个点，然后排序，去掉最大的三个和最小的三个，然后相加求平均值。做一次P

3、I，在下个正弦波开始时，赋给Ma。这里关键是AD一定要采的准，可以设置电平翻转来用示波器观察是不是在峰值附近采值。下面给出全部代码：main.h#ifndef _MAIN_H#define _MAIN_H void RCC_Configuration(void);void NVIC_Configuration(void);void GPIO_Configuration(void);void ADC_Configuration(void);void TIM_Configuration(void);void ADC_DMAInit(void);void EXTI_Configuration(voi

4、d);void display1(void);void display2(void);void display3(void);void display4(void);void display5(void);void pinlvzhuanhua(void);#endifmain.c#include stm32f10x_lib.h#include stm32f10x_it.h#include stm32f10x_dma.h#include stm32f10x_adc.h#include #include lcd1602.h#include juzhenkey.h#include main.h/*

5、Private typedef -*/* Private define -*/* Private macro -*/* Private variables -*/* Private function prototypes -*/* Private functions -*/* Function Name : main* Description : Main program.* Input : None* Output : None* Return : None*/#define N 14#define ADC1_DR_Address (u32)0x4001244c)unsigned short

6、 ADCConvertedValueN;EXTI_InitTypeDef EXTI_InitStructure;ErrorStatus HSEStartUpStatus;NVIC_InitTypeDef NVIC_InitStructure1;float xianshi=0.0;u8 i=0;u8 v1=0,v2=0;u8 p1=0,p2=0,p3=0;u8 pp=0;u8 Time50Ms=0;float nn=0.4;vu16 pulse=0;vu16 Period=20;s8 shuzi=0123456789;s8 pinlv=20HZ;s8 dianya=18V;s8 table=0.

7、000V;s8 ma=0.00;s8 OverCurrent=OverCurrent!;u8 pinlvshezhi=20;u8 dianyashezhi=18;u8 flag1=0;u8 flag2=0;u8 OverCurrentFlag=0;float del=0.4;int main(void)#ifdef DEBUG debug();#endifpinlvzhuanhua();RCC_Configuration();GPIO_Configuration(); DelayXms(60);Lcd_Init();DelayXms(20);display1();TIM_Configurati

8、on();NVIC_Configuration();EXTI_Configuration();CH451_Init();ADC_Configuration();ADC_DMAInit();DelayXms(60);Lcd_Init();display1(); /* Infinite loop */ while (1) if(GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_5) TIM_Cmd(TIM1, DISABLE); TIM_CtrlPWMOutputs(TIM1, DISABLE); Lcd_Init(); display5(); OverCurrentFla

9、g=1; DelayXms(200); else if(!(GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_5)&(OverCurrentFlag=1) TIM_Cmd(TIM1, ENABLE); TIM_CtrlPWMOutputs(TIM1, ENABLE); Lcd_Init(); OverCurrentFlag=0; else if(!(GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_5)&(OverCurrentFlag=0) DelayXms(200); display2(); DelayXms(200); display3()

10、; void RCC_Configuration(void)RCC_DeInit(); /将外设RCC寄存器重设为缺省值RCC_HSEConfig(RCC_HSE_ON);/使能HSE，即外部高速晶振HSEStartUpStatus=RCC_WaitForHSEStartUp();/等待HSE就绪if(HSEStartUpStatus=SUCCESS)FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);/使能预取指令缓存FLASH_SetLatency(FLASH_Latency_2); /设置代码延时值Flash 2 wait state

11、RCC_HCLKConfig(RCC_SYSCLK_Div1); /设置AHB时钟 HCLK=SYSCLKRCC_PCLK2Config(RCC_HCLK_Div1);/设置高速AHB时钟 PCLK2=HCLKRCC_PCLK1Config(RCC_HCLK_Div2);/设置低速AHB时钟PCLK1=HCLK/2RCC_PLLConfig(RCC_PLLSource_HSE_Div1,RCC_PLLMul_9);/设置PLL时钟源及倍频系数 PLLCLK=8MHz*9=72MHzRCC_PLLCmd(ENABLE);/等待PLL就绪while(RCC_GetFlagStatus(RCC_FL

12、AG_PLLRDY)=RESET)RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);/选定PLL为系统时钟源while(RCC_GetSYSCLKSource()!=0x08)/确认PLL作为系统时钟源RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1|RCC_APB2Periph_AFIO,ENABLE);RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1|RCC_AHBPeriph_DMA2,ENABLE);RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1|

13、RCC_APB2Periph_GPIOA |RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOC |RCC_APB2Periph_GPIOD |RCC_APB2Periph_GPIOE, ENABLE);RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 | RCC_APB1Periph_TIM3|RCC_APB1Periph_TIM4, ENABLE);RCC_ADCCLKConfig(RCC_PCLK2_Div4);void EXTI_Configuration(void) EXTI_DeInit(); /将EXIT寄存器重

14、设置为缺省值 GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource6); /设置为外部中断 EXTI_InitStructure.EXTI_Line = EXTI_Line6; /设置外部中断线 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; /设置EXTI线路为重点请求 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; /设置输入线路为下降沿为中断请求 EXTI_InitStructure.EXTI_LineCmd

15、= ENABLE; /中断使能 EXTI_Init(&EXTI_InitStructure); GPIO_EXTILineConfig(GPIO_PortSourceGPIOD, GPIO_PinSource1); /设置为外部中断 EXTI_InitStructure.EXTI_Line = EXTI_Line1; /设置外部中断线 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; /设置EXTI线路为重点请求 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; /设置输入线路为下

16、降沿为中断请求 EXTI_InitStructure.EXTI_LineCmd = ENABLE; /中断使能 EXTI_Init(&EXTI_InitStructure); / EXTI_GenerateSWInterrupt(EXTI_Line5); EXTI_ClearFlag(EXTI_Line6|EXTI_Line1); EXTI_ClearFlag(EXTI_Line1|EXTI_Line1);/ EXTI_ClearFlag(EXTI_Line0);void NVIC_Configuration(void) NVIC_InitTypeDef NVIC_InitStructure;

17、 #ifdef VECT_TAB_RAM NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);#else /* VECT_TAB_FLASH */ NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);#endif /* Enable the TIM1 global Interrupt */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); NVIC_InitStructure.NVIC_IRQChannel =TIM1_UP_IRQChannel ; NVIC_InitStru

18、cture.NVIC_IRQChannelPreemptionPriority =0; NVIC_InitStructure.NVIC_IRQChannelSubPriority =0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /* Enable the DMA Interrupt */ NVIC_InitStructure.NVIC_IRQChannel =DMA1_Channel1_IRQChannel; NVIC_InitStructure.NVIC_IRQChanne

19、lPreemptionPriority =1; NVIC_InitStructure.NVIC_IRQChannelSubPriority =2; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /* Enable the EXTI9_5 global Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQChannel; NVIC_InitStructure.NVIC_IRQChannelPreemptionPri

20、ority =0; NVIC_InitStructure.NVIC_IRQChannelSubPriority =0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQChannel; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =0; NVIC_InitStructure.NVIC_IRQChannelSubPriority =1

21、; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /* Enable the TIM2 global Interrupt */ NVIC_InitStructure.NVIC_IRQChannel =TIM2_IRQChannel; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =1; NVIC_InitStructure.NVIC_IRQChannelSubPriority =2; NVIC_InitStructure.

22、NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQChannel; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =1; NVIC_InitStructure.NVIC_IRQChannelSubPriority =1; NVIC_InitStructure.NVIC_IRQChannelCmd =ENABLE; NVIC_Init(&NVIC_InitStructure);

23、/ NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQChannel;/ NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =1;/ NVIC_InitStructure.NVIC_IRQChannelSubPriority =3;/ NVIC_InitStructure.NVIC_IRQChannelCmd =ENABLE;/ NVIC_Init(&NVIC_InitStructure);void GPIO_Configuration(void)GPIO_InitTypeDef GPIO_Init

24、Structure; /配置1602的控制端 RS RW EGPIO_InitStructure.GPIO_Pin = GPIO_Pin_15|GPIO_Pin_14|GPIO_Pin_13;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOB, &GPIO_InitStructure);/* GPIOC Configuration: Channel 1, 2 and 3 as alternate function pus

25、h-pull */配置D8-D15 为1602数据口 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10| GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStructure);/*键盘*/ GPI

26、O_InitStructure.GPIO_Pin = GPIO_Pin_6; GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IPU; /上拉输入 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IPD; /下拉输入 GPIO_InitStructure.GPIO_Spee

27、d = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5|GPIO_Pin_8|GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; /推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = G

28、PIO_Pin_11; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; /推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure); /*键盘*/ GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AIN; /GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB,&GPIO_InitStructure); /AD输入测电压/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;/ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; /下拉输入测电压/ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;/ GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;