380 lines
9.5 KiB
C
380 lines
9.5 KiB
C
/*
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* mppt_control.c
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*
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* Created on: 2024年6月29日
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* Author: psx
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*/
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#include "mppt_control.h"
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#include "collect_Conversion.h"
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#include "pwm.h"
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#include "inflash.h"
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#include "gpio.h"
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#include "sl_protocol.h"
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#include "task.h"
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#include "uart_dev.h"
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#include "parameter.h"
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static void ConstantCurrentCharge(void);
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static void ConstantVoltageCharge(void);
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static void FloatingCharge(void);
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/**
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* @brief 恒定输入电压
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* @param
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* @retval
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*
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*/
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void mppt_constantVoltage(float InVoltage)
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{
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static float_t kp = 0.005;
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static float_t ki = 0.00001;
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float_t pv1Volt = g_otherParameter.Solar_In_Circuit_Voltage;
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float_t error = pv1Volt - InVoltage;
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float_t stepPwm = kp * error + ki * pv1Volt;
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g_controlParameter.dutyRatio += stepPwm;
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Set_duty_ratio(&g_controlParameter.dutyRatio);
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}
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/**
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* @brief 恒定输出电压(电池)
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* @param
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* @retval
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*
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*/
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void mppt_constantVoltageB(float OutVoltage)
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{
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static float_t kp = 0.005;
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static float_t ki = 0.00001;
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float_t outVolt = g_otherParameter.Battery_Voltage;
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float_t error = OutVoltage - outVolt;
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float_t stepPwm = kp * error + ki * outVolt;
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g_controlParameter.dutyRatio += stepPwm;
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Set_duty_ratio(&g_controlParameter.dutyRatio);
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}
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/**
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* @brief 恒定输出电压（输出检测端,没有电池时）
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* @param
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* @retval
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*
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*/
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void mppt_constantVoltageNoBatteryO(float OutVoltage)
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{
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static float_t kp = 0.005;
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static float_t ki = 0.00001;
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float_t outVolt = g_otherParameter.Output_Voltage;
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float_t error = OutVoltage - outVolt;
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float_t stepPwm = kp * error + ki * outVolt;
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g_controlParameter.dutyRatio += stepPwm;
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Set_duty_ratio(&g_controlParameter.dutyRatio);
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}
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/**
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* @brief 恒定输出电压（输出检测端）
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* @param
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* @retval
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*
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*/
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float_t lastVolt = 0;
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float_t lastStepPwm = 0;
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float_t lastDutyRatio = 0;
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void mppt_constantVoltageO(float OutVoltage)
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{
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static float_t kp = 0.005;
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static float_t ki = 0.00001;
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// static uint8_t flag = 0;
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float_t outVolt = g_otherParameter.Output_Voltage;
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float_t error = OutVoltage - outVolt;
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float_t StepPwm = kp * error + ki * outVolt;
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/* 当有电池时，输出电压的曲线是先上升后下降 */
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if (lastDutyRatio >= g_controlParameter.dutyRatio) {
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// if (lastVolt >= outVolt) {
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g_controlParameter.dutyRatio += StepPwm;
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// } else {
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// g_controlParameter.dutyRatio -= StepPwm;
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// }
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} else {
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// if (lastVolt >= outVolt) {
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// g_controlParameter.dutyRatio -= StepPwm;
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// } else {
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// g_controlParameter.dutyRatio += StepPwm;
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// }
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g_controlParameter.dutyRatio -= StepPwm;
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}
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/* 过温保护 */
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if (g_otherParameter.overTemperature == 0) {
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} else if (g_otherParameter.overTemperature == 1) {
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g_controlParameter.dutyRatio -= 0.1;
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} else if (g_otherParameter.overTemperature == 2) {
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g_controlParameter.dutyRatio -= 0.2;
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} else if (g_otherParameter.overTemperature == 3) {
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g_controlParameter.dutyRatio -= 0.3;
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}
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lastVolt = outVolt;
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lastStepPwm = StepPwm;
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lastDutyRatio = g_controlParameter.dutyRatio;
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Set_duty_ratio(&g_controlParameter.dutyRatio);
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}
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/**
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* @brief 通过扰动干扰法追踪最大功率点
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* @param
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* @retval
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*
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*/
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float_t lastPower = 0;
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float_t lastSolarInCircuitVoltage = 0;
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void mppt_readJust(void)
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{
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static float_t step1 = 0.005;
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static float_t step2 = 0.001;
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static float_t tempV = 0.2;
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static uint16_t flag = 0;
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flag++;
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if (flag < 1000) {
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return;
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}
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flag = 0;
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float_t SolarInCircuitVoltage = get_PV1_VOLT_IN();
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float_t power = g_otherParameter.Output_Voltage * g_otherParameter.Charg_Current;
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float_t voltageDifference = SolarInCircuitVoltage - lastSolarInCircuitVoltage;
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/* 输出电压随占空比增加电压减小 */
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if (power <= lastPower) {
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if (lastSolarInCircuitVoltage <= SolarInCircuitVoltage) {
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if (voltageDifference > tempV) {
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g_controlParameter.dutyRatio += step2;
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} else {
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g_controlParameter.dutyRatio += step1;
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}
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} else {
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if (voltageDifference > tempV) {
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g_controlParameter.dutyRatio -= step2;
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} else {
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g_controlParameter.dutyRatio -= step1;
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}
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}
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} else {
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if (lastSolarInCircuitVoltage <= SolarInCircuitVoltage) {
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if (voltageDifference > tempV) {
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g_controlParameter.dutyRatio -= step2;
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} else {
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g_controlParameter.dutyRatio -= step1;
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}
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} else {
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if (voltageDifference > tempV) {
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g_controlParameter.dutyRatio += step2;
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} else {
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g_controlParameter.dutyRatio += step1;
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}
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}
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}
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lastPower = power;
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lastSolarInCircuitVoltage = SolarInCircuitVoltage;
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/* 过温保护 */
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if (g_otherParameter.overTemperature == 0) {
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} else if (g_otherParameter.overTemperature == 1) {
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g_controlParameter.dutyRatio -= 0.1;
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} else if (g_otherParameter.overTemperature == 2) {
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g_controlParameter.dutyRatio -= 0.2;
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} else if (g_otherParameter.overTemperature == 3) {
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g_controlParameter.dutyRatio -= 0.3;
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}
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Set_duty_ratio(&g_controlParameter.dutyRatio);
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}
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/**
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* @brief 恒流充电（大电流充电），mppt最大功率充电
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* @param
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* @retval
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*
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*/
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void ConstantCurrentCharge(void)
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{
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// mppt_constantVoltage(18);
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mppt_readJust();
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}
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/**
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* @brief 恒压充电
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* @param
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* @retval
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*
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*/
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void ConstantVoltageCharge(void)
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{
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mppt_constantVoltageO(g_controlParameter.constantVoltageChargeV);
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}
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/**
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* @brief 浮充充电
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* @param
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* @retval
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*
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*/
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void FloatingCharge(void)
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{
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mppt_constantVoltageO(g_controlParameter.FloatV);
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}
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/**
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* @brief mppt控制模式的确定
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* @param
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* @retval
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*
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*/
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void MpptContorlChoice(void)
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{
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switch(g_otherParameter.MPPT_Mode) {
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case CONSTANTCURRENT:
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ConstantCurrentCharge();
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break;
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case CONSTANTVOLTAGE:
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ConstantVoltageCharge();
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break;
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case FLOAT:
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FloatingCharge();
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break;
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default:
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break;
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}
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}
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/**
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* @brief mppt模式的确定
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* @param
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* @retval
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*
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*/
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void MpptModeChoice(void)
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{
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/* 太阳能板输出电压小于一定值且充电电流也小于一定值时mppt停止工作 */
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if ((g_otherParameter.Input_Voltage < g_controlParameter.stopSolarOpenCircuitV
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&& g_otherParameter.Charg_Current < 0.1) ){
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// && g_otherParameter.MPPT_Mode != NoWork) {
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g_otherParameter.MPPT_Mode = NoWork;
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TIM_Cmd(TIM3, DISABLE);
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TIM_SetCompare4(TIM4, 0);
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g_controlParameter.dutyRatio = 0;
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TimeSliceOffset_Register(&g_startMpptControl, Task_startMpptControl
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, startMpptControl_reloadVal, startMpptControl_offset);
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TimeSliceOffset_Unregister(&g_collectOpenCircuitVoltage);
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return;
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}
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// /* 流向电池的电流小于一定值或者电压过大或者过小判定无电池采用浮充输出 */
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// if ((g_otherParameter.Charg_BatteryCurrent < 0.05 && g_otherParameter.Charg_BatteryCurrent > -0.05)
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// || g_otherParameter.Battery_Voltage > 16 || g_otherParameter.Battery_Voltage < 8) {
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// g_otherParameter.MPPT_Mode = FLOAT;
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// g_otherParameter.batteryState = 0;
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// return;
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// }
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if (g_otherParameter.Battery_Voltage > 16 || g_otherParameter.Battery_Voltage < 8) {
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g_otherParameter.MPPT_Mode = FLOAT;
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g_otherParameter.batteryState = 0;
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return;
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}
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/* 当电压低于恒压充电阈值电压（-0.2V）且充电电流大于0.1A时采用恒流输出 */
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if ((g_controlParameter.constantVoltageV - 0.2) >= g_otherParameter.Battery_Voltage
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&& g_otherParameter.Charg_Current > 0.1) {
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g_otherParameter.MPPT_Mode = CONSTANTCURRENT;
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return;
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}
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/* 当电压高于恒压充电阈值电压且充电电流大于浮充充电阈值（+0.1A）电流时采用恒压输出 */
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if ((g_controlParameter.constantVoltageV < g_otherParameter.Battery_Voltage)
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// && (g_controlParameter.floatI + 0.1 <= g_otherParameter.Charg_Current)) {
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&& ((g_controlParameter.floatI + 0.1 <= g_otherParameter.Charg_BatteryCurrent) || (g_controlParameter.floatI + 0.1 <= -g_otherParameter.Charg_Current))) {
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g_otherParameter.MPPT_Mode = CONSTANTVOLTAGE;
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return;
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}
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/* 当电压高于恒压充电阈值电压且充电电流小于浮充充电阈值电流时采用恒压输出 */
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if ((((g_controlParameter.constantVoltageV < g_otherParameter.Battery_Voltage)
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&& (g_controlParameter.floatI > g_otherParameter.Charg_Current))
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&& (g_controlParameter.floatI > g_otherParameter.Discharg_Current))) {
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g_otherParameter.MPPT_Mode = FLOAT;
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return;
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}
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}
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/**
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* @brief mppt的控制
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* @param
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* @retval
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*
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*/
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void MpptContorl(void)
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{
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g_otherParameter.Output_Voltage = get_PV_VOLT_OUT();
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g_otherParameter.Solar_In_Circuit_Voltage = get_PV1_VOLT_IN();
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// /* 出现adc采集出错全为0,退出本次中断 */
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// if (g_otherParameter.Discharg_Current == 0 && g_otherParameter.Charg_Current == 0) {
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// return;
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// }
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g_otherParameter.Charg_BatteryCurrent = g_otherParameter.Charg_Current - g_otherParameter.Discharg_Current;
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MpptModeChoice();
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/* 无电池时，恒压输出 */
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if (!g_otherParameter.batteryState) {
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if (!g_otherParameter.overTemperature) {
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// mppt_constantVoltageNoBatteryO(g_controlParameter.FloatV);
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mppt_constantVoltageO(g_controlParameter.FloatV);
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}
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return;
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}
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// /* 有电池时 */
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// if (!g_otherParameter.overTemperature) {
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// MpptModeChoice();
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// MpptContorlChoice();
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// }
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MpptContorlChoice();
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}
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