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add explicit checks to avoid potential div. by zero on application of artificially increased power limit if channel power becomes zero

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This commit is contained in:
qubeck 2023-04-12 20:44:38 +02:00
parent cd4a327671
commit b79619bf8b
1 changed files with 8 additions and 5 deletions
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13
src/PowerLimiter.cpp
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@ -224,17 +224,20 @@ void PowerLimiterClass::setNewPowerLimit(std::shared_ptr<InverterAbstract> inver
} }
MessageOutput.printf("[PowerLimiterClass::loop] Limit Non-Persistent: %d W\r\n", newPowerLimit); MessageOutput.printf("[PowerLimiterClass::loop] Limit Non-Persistent: %d W\r\n", newPowerLimit);
int32_t effPowerLimit = newPowerLimit;
std::list<ChannelNum_t> dcChnls = inverter->Statistics()->getChannelsByType(TYPE_DC); std::list<ChannelNum_t> dcChnls = inverter->Statistics()->getChannelsByType(TYPE_DC);
int dcProdChnls = 0, dcTotalChnls = dcChnls.size(); int dcProdChnls = 0, dcTotalChnls = dcChnls.size();
for (auto& c : dcChnls) { for (auto& c : dcChnls) {
if (inverter->Statistics()->getChannelFieldValue(TYPE_DC, c, FLD_PDC) > 0) { if (inverter->Statistics()->getChannelFieldValue(TYPE_DC, c, FLD_PDC) > 1.0) {
dcProdChnls++; dcProdChnls++;
} }
} }
int32_t effPowerLimit = round(newPowerLimit * static_cast<float>(dcTotalChnls) / dcProdChnls); if (dcProdChnls > 0) {
uint16_t inverterMaxPower = inverter->DevInfo()->getMaxPower(); effPowerLimit = round(newPowerLimit * static_cast<float>(dcTotalChnls) / dcProdChnls);
if (effPowerLimit > inverterMaxPower) { uint16_t inverterMaxPower = inverter->DevInfo()->getMaxPower();
effPowerLimit = inverterMaxPower; if (effPowerLimit > inverterMaxPower) {
effPowerLimit = inverterMaxPower;
}
} }
inverter->sendActivePowerControlRequest(Hoymiles.getRadio(), effPowerLimit, PowerLimitControlType::AbsolutNonPersistent); inverter->sendActivePowerControlRequest(Hoymiles.getRadio(), effPowerLimit, PowerLimitControlType::AbsolutNonPersistent);