Merge pull request #255 from madmartin:inverter_restart

Feature: add daily restart for the inverter

include/Configuration.h

@@ -150,6 +150,7 @@ struct CONFIG_T {
     float PowerLimiter_VoltageStartThreshold;
     float PowerLimiter_VoltageStopThreshold;
     float PowerLimiter_VoltageLoadCorrectionFactor;
+    int8_t PowerLimiter_RestartHour;
 
     bool Battery_Enabled;
     bool Huawei_Enabled;

include/PowerLimiter.h

@@ -31,6 +31,7 @@ public:
     int32_t getLastRequestedPowewrLimit();
     void setDisable(bool disable);
     bool getDisable();
+    void calcNextInverterRestart();
 
 private:
     uint32_t _lastLoop = 0;
@@ -39,6 +40,8 @@ private:
     plStates _plState; 
     bool _disabled = false;
     bool _batteryDischargeEnabled = false;
+    uint32_t _nextInverterRestart = 0; // Values: 0->not calculated / 1->no restart configured / >1->time of next inverter restart in millis()
+    uint32_t _nextCalculateCheck = 5000; // time in millis for next NTP check to calulate restart
 
     float _powerMeter1Power;
     float _powerMeter2Power;

include/defaults.h

@@ -122,6 +122,7 @@
 #define POWERLIMITER_VOLTAGE_START_THRESHOLD 50.0
 #define POWERLIMITER_VOLTAGE_STOP_THRESHOLD 49.0
 #define POWERLIMITER_VOLTAGE_LOAD_CORRECTION_FACTOR 0.001
+#define POWERLIMITER_RESTART_HOUR -1
 
 #define BATTERY_ENABLED false
 

src/Configuration.cpp

@@ -163,6 +163,7 @@ bool ConfigurationClass::write()
     powerlimiter["voltage_start_threshold"] = config.PowerLimiter_VoltageStartThreshold;
     powerlimiter["voltage_stop_threshold"] = config.PowerLimiter_VoltageStopThreshold;
     powerlimiter["voltage_load_correction_factor"] = config.PowerLimiter_VoltageLoadCorrectionFactor;
+    powerlimiter["inverter_restart_hour"] = config.PowerLimiter_RestartHour;
 
     JsonObject battery = doc.createNestedObject("battery");
     battery["enabled"] = config.Battery_Enabled;
@@ -360,6 +361,7 @@ bool ConfigurationClass::read()
     config.PowerLimiter_VoltageStartThreshold = powerlimiter["voltage_start_threshold"] | POWERLIMITER_VOLTAGE_START_THRESHOLD;
     config.PowerLimiter_VoltageStopThreshold = powerlimiter["voltage_stop_threshold"] | POWERLIMITER_VOLTAGE_STOP_THRESHOLD;
     config.PowerLimiter_VoltageLoadCorrectionFactor = powerlimiter["voltage_load_correction_factor"] | POWERLIMITER_VOLTAGE_LOAD_CORRECTION_FACTOR;
+    config.PowerLimiter_RestartHour = powerlimiter["inverter_restart_hour"] | POWERLIMITER_RESTART_HOUR;
 
     JsonObject battery = doc["battery"];
     config.Battery_Enabled = battery["enabled"] | BATTERY_ENABLED;

src/PowerLimiter.cpp

@@ -53,6 +53,27 @@ void PowerLimiterClass::loop()
         return;
     }
 
+    // Check if next inverter restart time is reached
+    if ((_nextInverterRestart > 1) && (_nextInverterRestart <= millis())) {
+        MessageOutput.println("[PowerLimiterClass::loop] send inverter restart");
+        inverter->sendRestartControlRequest();
+        calcNextInverterRestart();
+    }
+
+    // Check if NTP time is set and next inverter restart not calculated yet
+    if ((config.PowerLimiter_RestartHour >= 0)  && (_nextInverterRestart == 0) ) {
+        // check every 5 seconds
+        if (_nextCalculateCheck < millis()) {
+            struct tm timeinfo;
+            if (getLocalTime(&timeinfo, 5)) {
+                calcNextInverterRestart();
+            } else {
+                MessageOutput.println("[PowerLimiterClass::loop] inverter restart calculation: NTP not ready");
+                _nextCalculateCheck += 5000;
+            }
+        }
+    }
+
     // Make sure inverter is turned off if PL is disabled by user/MQTT
     if (((!config.PowerLimiter_Enabled || _disabled) && _plState != SHUTDOWN)) {
         if (inverter->isProducing()) {
@@ -385,3 +406,43 @@ bool PowerLimiterClass::isStopThresholdReached(std::shared_ptr<InverterAbstract>
     float correctedDcVoltage = getLoadCorrectedVoltage(inverter);
     return correctedDcVoltage <= config.PowerLimiter_VoltageStopThreshold;
 }
+
+/// @brief calculate next inverter restart in millis
+void PowerLimiterClass::calcNextInverterRestart()
+{
+    CONFIG_T& config = Configuration.get();
+
+    // first check if restart is configured at all
+    if (config.PowerLimiter_RestartHour < 0) {
+        _nextInverterRestart = 1;
+        MessageOutput.println("[PowerLimiterClass::calcNextInverterRestart] _nextInverterRestart disabled");
+        return;
+    }
+
+    // read time from timeserver, if time is not synced then return
+    struct tm timeinfo;
+    if (getLocalTime(&timeinfo, 5)) {
+        // calculation first step is offset to next restart in minutes
+        uint16_t dayMinutes = timeinfo.tm_hour * 60 + timeinfo.tm_min;
+        uint16_t targetMinutes = config.PowerLimiter_RestartHour * 60;
+        if (config.PowerLimiter_RestartHour > timeinfo.tm_hour) {
+            // next restart is on the same day
+            _nextInverterRestart = targetMinutes - dayMinutes;
+        } else {
+            // next restart is on next day
+            _nextInverterRestart = 1440 - dayMinutes + targetMinutes;
+        }
+        #ifdef POWER_LIMITER_DEBUG
+        MessageOutput.printf("[PowerLimiterClass::calcNextInverterRestart] Localtime read %d %d / configured RestartHour %d\r\n", timeinfo.tm_hour, timeinfo.tm_min, config.PowerLimiter_RestartHour);
+        MessageOutput.printf("[PowerLimiterClass::calcNextInverterRestart] dayMinutes %d / targetMinutes %d\r\n", dayMinutes, targetMinutes);
+        MessageOutput.printf("[PowerLimiterClass::calcNextInverterRestart] next inverter restart in %d minutes\r\n", _nextInverterRestart);
+        #endif
+        // then convert unit for next restart to milliseconds and add current uptime millis()
+        _nextInverterRestart *= 60000;
+        _nextInverterRestart += millis();
+    } else {
+        MessageOutput.println("[PowerLimiterClass::calcNextInverterRestart] getLocalTime not successful, no calculation");
+        _nextInverterRestart = 0;
+    }
+    MessageOutput.printf("[PowerLimiterClass::calcNextInverterRestart] _nextInverterRestart @ %d millis\r\n", _nextInverterRestart);
+}

src/WebApi_powerlimiter.cpp

@@ -52,6 +52,7 @@ void WebApiPowerLimiterClass::onStatus(AsyncWebServerRequest* request)
     root[F("voltage_start_threshold")] = static_cast<int>(config.PowerLimiter_VoltageStartThreshold * 100 +0.5) / 100.0;
     root[F("voltage_stop_threshold")] = static_cast<int>(config.PowerLimiter_VoltageStopThreshold * 100 +0.5) / 100.0;;
     root[F("voltage_load_correction_factor")] = config.PowerLimiter_VoltageLoadCorrectionFactor;
+    root[F("inverter_restart_hour")] = config.PowerLimiter_RestartHour;
 
     response->setLength();
     request->send(response);
@@ -136,8 +137,11 @@ void WebApiPowerLimiterClass::onAdminPost(AsyncWebServerRequest* request)
     config.PowerLimiter_VoltageStopThreshold = root[F("voltage_stop_threshold")].as<float>();
     config.PowerLimiter_VoltageStopThreshold = static_cast<int>(config.PowerLimiter_VoltageStopThreshold * 100) / 100.0;
     config.PowerLimiter_VoltageLoadCorrectionFactor = root[F("voltage_load_correction_factor")].as<float>();
+    config.PowerLimiter_RestartHour = root[F("inverter_restart_hour")].as<int8_t>();
     Configuration.write();
 
+    PowerLimiter.calcNextInverterRestart();
+
     retMsg[F("type")] = F("success");
     retMsg[F("message")] = F("Settings saved!");
 

webapp/src/locales/de.json

@@ -549,6 +549,9 @@
         "InverterIsBehindPowerMeter": "Welchselrichter ist hinter Leistungsmesser",
         "Battery": "DC / Akku",
         "VoltageLoadCorrectionInfo": "<b>Hinweis:</b> Wenn Leistung von der Batterie abgegeben wird, bricht normalerweise die Spannung etwas ein. Damit nicht vorzeitig der Wechelrichter ausgeschaltet wird sobald der \"Stop\"-Schwellenwert erreicht wird, wird der hier angegebene Korrekturfaktor mit einberechnet. Korrigierte Spannung = DC Spannung + (Aktuelle Leistung (W) + Korrekturfaktor).",
+        "InverterRestart": "Wechselrichter Neustart",
+        "InverterRestartHour": "Stunde für Neustart",
+        "InverterRestartHint": "Neustart des Wechselrichter einmal täglich um die \"Tagesertrag\" Werte wieder auf Null zu setzen.",
         "Save": "@:dtuadmin.Save"
     },
     "batteryadmin": {

webapp/src/locales/en.json

@@ -553,6 +553,9 @@
         "InverterIsBehindPowerMeter": "Inverter is behind Power meter",
         "Battery": "DC / Battery",
         "VoltageLoadCorrectionInfo": "<b>Hint:</b> When the power output is higher, the voltage is usually decreasing. In order to not stop the inverter too early (Stop treshold), a power factor can be specified here to correct this. Corrected voltage = DC Voltage + (Current power * correction factor).",
+        "InverterRestart": "Inverter Restart",
+        "InverterRestartHour": "Restart Hour",
+        "InverterRestartHint": "Restart the Inverter once a day to reset the \"YieldDay\" values.",
         "Save": "@:dtuadmin.Save"
     },
     "batteryadmin": {

webapp/src/types/PowerLimiterConfig.ts

@@ -14,4 +14,5 @@ export interface PowerLimiterConfig {
     voltage_start_threshold: number;
     voltage_stop_threshold: number;
     voltage_load_correction_factor: number;
+    inverter_restart_hour: number;
 }

webapp/src/views/PowerLimiterAdminView.vue

@@ -193,6 +193,24 @@
                 <div class="alert alert-secondary" role="alert" v-html="$t('powerlimiteradmin.VoltageLoadCorrectionInfo')"></div>
             </CardElement>
 
+            <CardElement :text="$t('powerlimiteradmin.InverterRestart')" textVariant="text-bg-primary" add-space
+                         v-show="powerLimiterConfigList.enabled"
+            >
+                <div class="row mb-3" v-show="powerLimiterConfigList.enabled">
+                    <label for="inputTimezone" class="col-sm-2 col-form-label">
+                        {{ $t('powerlimiteradmin.InverterRestartHour') }}:
+                        <BIconInfoCircle v-tooltip :title="$t('powerlimiteradmin.InverterRestartHint')" />
+                    </label>
+                    <div class="col-sm-10">
+                        <select class="form-select" v-model="powerLimiterConfigList.inverter_restart_hour">
+                            <option v-for="hour in restartHourList" :key="hour.key" :value="hour.key">
+                                {{ hour.value }}
+                            </option>
+                        </select>
+                    </div>
+                </div>
+            </CardElement>
+
             <button type="submit" class="btn btn-primary mb-3">{{ $t('powerlimiteradmin.Save') }}</button>
         </form>
     </BasePage>
@@ -243,6 +261,33 @@ export default defineComponent({
                 { key: 0, value: "powerlimiteradmin.BatteryDrainWhenFull"},
                 { key: 1, value: "powerlimiteradmin.BatteryDrainAtNight" },
             ],
+            restartHourList: [
+                { key: -1, value: "- - - -" },
+                { key: 0, value: "0:00" },
+                { key: 1, value: "1:00" },
+                { key: 2, value: "2:00" },
+                { key: 3, value: "3:00" },
+                { key: 4, value: "4:00" },
+                { key: 5, value: "5:00" },
+                { key: 6, value: "6:00" },
+                { key: 7, value: "7:00" },
+                { key: 8, value: "8:00" },
+                { key: 9, value: "9:00" },
+                { key: 10, value: "10:00" },
+                { key: 11, value: "11:00" },
+                { key: 12, value: "12:00" },
+                { key: 13, value: "13:00" },
+                { key: 14, value: "14:00" },
+                { key: 15, value: "15:00" },
+                { key: 16, value: "16:00" },
+                { key: 17, value: "17:00" },
+                { key: 18, value: "18:00" },
+                { key: 19, value: "19:00" },
+                { key: 20, value: "20:00" },
+                { key: 21, value: "21:00" },
+                { key: 22, value: "22:00" },
+                { key: 23, value: "23:00" },
+            ],
             alertMessage: "",
             alertType: "info",
             showAlert: false,