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Power limiter fixes (#201)

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MalteSchm 2023-04-28 13:59:18 +02:00 committed by GitHub
parent 80f1af32f8
commit c621f2d3e3
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 44 additions and 27 deletions
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61
src/PowerLimiter.cpp
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@ -43,6 +43,7 @@ void PowerLimiterClass::loop()
|| isStopThresholdReached(inverter)) {
if (inverter->isProducing()) {
MessageOutput.printf("PL initiated inverter shutdown.\r\n");
inverter->sendActivePowerControlRequest(config.PowerLimiter_LowerPowerLimit, PowerLimitControlType::AbsolutNonPersistent);
inverter->sendPowerControlRequest(false);
} else {
_plState = SHUTDOWN;
@ -54,15 +55,26 @@ void PowerLimiterClass::loop()
if (!config.PowerLimiter_Enabled || _disabled) {
return;
}
// Safety check, return on too old power meter values
if (millis() - PowerMeter.getLastPowerMeterUpdate() > (30 * 1000)
|| (millis() - inverter->Statistics()->getLastUpdate()) > (config.Dtu_PollInterval * 10 * 1000)) {
// If the power meter values are older than 30 seconds,
// or the Inverter Stats are older then 10x the poll interval
// set the limit to lower power limit for safety reasons.
MessageOutput.println("[PowerLimiterClass::loop] Power Meter/Inverter values too old. Using 0W (i.e. disable inverter)");
inverter->sendActivePowerControlRequest(config.PowerLimiter_LowerPowerLimit, PowerLimitControlType::AbsolutNonPersistent);
inverter->sendPowerControlRequest(false);
return;
}
// At this point the PL is enabled but we could still be in the shutdown state
_plState = ACTIVE;
// If the last inverter update is too old, don't do anything.
// If the last inverter update was before the last limit updated, don't do anything.
// Also give the Power meter 3 seconds time to recognize power changes after the last set limit
// as the Hoymiles MPPT might not react immediately.
if ((millis() - inverter->Statistics()->getLastUpdate()) > 10000
|| inverter->Statistics()->getLastUpdate() <= _lastLimitSetTime
if (inverter->Statistics()->getLastUpdate() <= _lastLimitSetTime
|| PowerMeter.getLastPowerMeterUpdate() <= (_lastLimitSetTime + 3000)) {
return;
}
@ -74,22 +86,36 @@ void PowerLimiterClass::loop()
dcVoltage, config.PowerLimiter_VoltageStartThreshold, config.PowerLimiter_VoltageStopThreshold, inverter->isProducing());
}
// Battery charging cycle conditions
// The battery can only be discharged after a full charge in the
// EMPTY_WHEN_FULL case
// First we always disable discharge if the battery is empty
if (isStopThresholdReached(inverter)) {
// Disable battery discharge when empty
_batteryDischargeEnabled = false;
} else if (config.PowerLimiter_BatteryDrainStategy == EMPTY_AT_NIGHT) {
// Enable battery discharge when there is no sunshine
_batteryDischargeEnabled = !canUseDirectSolarPower();
} else {
// UI: Solar Passthrough Enabled -> false
// Battery discharge can be enabled when start threshold is reached
if (!config.PowerLimiter_SolarPassThroughEnabled && isStartThresholdReached(inverter)) {
_batteryDischargeEnabled = true;
}
// This checks if the battery discharge start conditions are met for the EMPTY_WHEN_FULL case
if (isStartThresholdReached(inverter) && config.PowerLimiter_BatteryDrainStategy == EMPTY_WHEN_FULL) {
// UI: Solar Passthrough Enabled -> true && EMPTY_AT_NIGHT
if (config.PowerLimiter_SolarPassThroughEnabled && config.PowerLimiter_BatteryDrainStategy == EMPTY_AT_NIGHT) {
if(isStartThresholdReached(inverter)) {
// In this case we should only discharge the battery as long it is above startThreshold
_batteryDischargeEnabled = true;
}
else {
// In this case we should only discharge the battery when there is no sunshine
_batteryDischargeEnabled = !canUseDirectSolarPower();
}
}
// UI: Solar Passthrough Enabled -> true && EMPTY_WHEN_FULL
// Battery discharge can be enabled when start threshold is reached
if (config.PowerLimiter_SolarPassThroughEnabled && isStartThresholdReached(inverter) && config.PowerLimiter_BatteryDrainStategy == EMPTY_WHEN_FULL) {
_batteryDischargeEnabled = true;
}
}
// Calculate and set Power Limit
int32_t newPowerLimit = calcPowerLimit(inverter, canUseDirectSolarPower(), _batteryDischargeEnabled);
@ -112,7 +138,7 @@ uint8_t PowerLimiterClass::getPowerLimiterState() {
return PL_UI_STATE_USE_SOLAR_ONLY;
}
if(VeDirect.veFrame.PPV > 0) {
if(!inverter->isProducing()) {
return PL_UI_STATE_CHARGING;
}
@ -162,16 +188,6 @@ int32_t PowerLimiterClass::calcPowerLimit(std::shared_ptr<InverterAbstract> inve
return 0;
}
// Safety check, return on too old power meter values
if (millis() - PowerMeter.getLastPowerMeterUpdate() > (30 * 1000)
&& (millis() - inverter->Statistics()->getLastUpdate()) > (config.Dtu_PollInterval * 10 * 1000)) {
// If the power meter values are older than 30 seconds,
// and the Inverter Stats are older then 10x the poll interval
// set the limit to 0W for safety reasons.
MessageOutput.println("[PowerLimiterClass::loop] Power Meter/Inverter values too old. Using 0W (i.e. disable inverter)");
return 0;
}
if (config.PowerLimiter_IsInverterBehindPowerMeter) {
// If the inverter the behind the power meter (part of measurement),
// the produced power of this inverter has also to be taken into account.
@ -232,6 +248,7 @@ void PowerLimiterClass::setNewPowerLimit(std::shared_ptr<InverterAbstract> inver
if (newPowerLimit < config.PowerLimiter_LowerPowerLimit) {
if (inverter->isProducing()) {
MessageOutput.println("[PowerLimiterClass::loop] Stopping inverter...");
inverter->sendActivePowerControlRequest(config.PowerLimiter_LowerPowerLimit, PowerLimitControlType::AbsolutNonPersistent);
inverter->sendPowerControlRequest(false);
}
newPowerLimit = config.PowerLimiter_LowerPowerLimit;