cvschalk
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cvschalk got a reaction from iiznh in Curious MPPT behavior@rfl unfortunately this is an issue specific to the Sunsynk and Deye MPPTs. They dont actually do Maximum Power Point Tracking at all, but rather Local Power Point Tracking. I've been trying to motivate them to fix this issue in FW, so that the bypass diodes are used as intended.
All of their competitors (Vitec, Sungrow, SolarX, SAM, Fronius, Sofar Solar, SKE/ Huawei Luna, etc.) have special algorithms to handle partial shading - mostly by performing a periodic (eg. every 30min) global Voltage scan to find the maximum power point. I can just imagine how many millions of kWhs goes missing every year because of this issue. And the most shocking part is that most installers seem to think this is "normal shading behavior".
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cvschalk got a reaction from JustinSchoeman in Geyserwise comms protocol?@JustinSchoeman @AndreFvdM I've decoded the 1 wire signal. Its not UART based. Its essentially just duty cycle encoded (short 400us pulse = 0, 800-1400us pulse = 1). 32bits transmitted at a time. LSB first. Temperature packets are 0x1800ZZ00, where ZZ = (temperature in degrees + 15). Another packet has two bits to indicate heater element state.
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cvschalk got a reaction from zsde in Curious MPPT behavior@rfl unfortunately this is an issue specific to the Sunsynk and Deye MPPTs. They dont actually do Maximum Power Point Tracking at all, but rather Local Power Point Tracking. I've been trying to motivate them to fix this issue in FW, so that the bypass diodes are used as intended.
All of their competitors (Vitec, Sungrow, SolarX, SAM, Fronius, Sofar Solar, SKE/ Huawei Luna, etc.) have special algorithms to handle partial shading - mostly by performing a periodic (eg. every 30min) global Voltage scan to find the maximum power point. I can just imagine how many millions of kWhs goes missing every year because of this issue. And the most shocking part is that most installers seem to think this is "normal shading behavior".
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cvschalk got a reaction from Jacques Ester in Curious MPPT behavior@rfl unfortunately this is an issue specific to the Sunsynk and Deye MPPTs. They dont actually do Maximum Power Point Tracking at all, but rather Local Power Point Tracking. I've been trying to motivate them to fix this issue in FW, so that the bypass diodes are used as intended.
All of their competitors (Vitec, Sungrow, SolarX, SAM, Fronius, Sofar Solar, SKE/ Huawei Luna, etc.) have special algorithms to handle partial shading - mostly by performing a periodic (eg. every 30min) global Voltage scan to find the maximum power point. I can just imagine how many millions of kWhs goes missing every year because of this issue. And the most shocking part is that most installers seem to think this is "normal shading behavior".
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cvschalk got a reaction from FixAMess in Curious MPPT behavior@rfl unfortunately this is an issue specific to the Sunsynk and Deye MPPTs. They dont actually do Maximum Power Point Tracking at all, but rather Local Power Point Tracking. I've been trying to motivate them to fix this issue in FW, so that the bypass diodes are used as intended.
All of their competitors (Vitec, Sungrow, SolarX, SAM, Fronius, Sofar Solar, SKE/ Huawei Luna, etc.) have special algorithms to handle partial shading - mostly by performing a periodic (eg. every 30min) global Voltage scan to find the maximum power point. I can just imagine how many millions of kWhs goes missing every year because of this issue. And the most shocking part is that most installers seem to think this is "normal shading behavior".
