victronconnect:ve-smart-networking
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victronconnect:ve-smart-networking [2020-05-15 15:32] – [3. Synchronised charging - further details] tabreu | victronconnect:ve-smart-networking [2020-05-25 10:33] – [5. Limitations] tabreu | ||
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A VE.Smart Network is a wireless communication network between Victron products. It is a wireless technology using Bluetooth Smart. | A VE.Smart Network is a wireless communication network between Victron products. It is a wireless technology using Bluetooth Smart. | ||
- | Features enabled by VE.Smart are Remote Voltage-, temperature and/or current | + | Features enabled by VE.Smart are, |
+ | * Remote Voltage | ||
+ | * Temperature | ||
+ | * Current sensing | ||
+ | * Synchronised charging | ||
=== Remote voltage-, temperature and/or current sensing === | === Remote voltage-, temperature and/or current sensing === | ||
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===== 3. Synchronised charging - further details ===== | ===== 3. Synchronised charging - further details ===== | ||
- | |||
- | (draft) | ||
Connect multiple charge controllers together in a VE.Smart network to make them charge the battery as if they were one large charger. The chargers will synchronise their charge algorithm between them. They will simultaneously switch from one charge state to another, for example from bulk to absorption. | Connect multiple charge controllers together in a VE.Smart network to make them charge the battery as if they were one large charger. The chargers will synchronise their charge algorithm between them. They will simultaneously switch from one charge state to another, for example from bulk to absorption. | ||
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Each unit will (and should) regulate its own output current. Which, among others, depends on the output of each PV array, cable resistance and the configured maximum output current of the charger. As such, it is not possible to configure a ' | Each unit will (and should) regulate its own output current. Which, among others, depends on the output of each PV array, cable resistance and the configured maximum output current of the charger. As such, it is not possible to configure a ' | ||
- | Note that there are various systems | + | === Synchronised charging is not always necessary === |
+ | |||
+ | There are certain system types in which synchronised charging is not necessary: | ||
- ESS Systems with managed batteries: the inverter/ | - ESS Systems with managed batteries: the inverter/ | ||
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In all above situations, the solar charger is already being controlled. Managed batteries are CAN-bus connected lithium batteries, as well as other chemistries, | In all above situations, the solar charger is already being controlled. Managed batteries are CAN-bus connected lithium batteries, as well as other chemistries, | ||
- | For chargers that are already connected and synchronised over VE.Can, pairing them using VE.Smart Network is not necessary. | + | For chargers that are already connected and synchronised over VE.Can, pairing them in a VE.Smart Network is not necessary. In case they __are__ paired, the pairing will be ignored. |
- | === How does synchronising works on solar chargers === | + | === How synchronising works on solar chargers === |
Synchronising the chargers works in a master-slave manner. The chargers will elect a master among them and that master will be the one to dictate the charge algorithm. As the master cannot be determined by the user, it is important to make sure all chargers belonging to the same network have the **same battery settings**. To know more about the battery settings and some other information, | Synchronising the chargers works in a master-slave manner. The chargers will elect a master among them and that master will be the one to dictate the charge algorithm. As the master cannot be determined by the user, it is important to make sure all chargers belonging to the same network have the **same battery settings**. To know more about the battery settings and some other information, | ||
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After being elected, the master will make sure all chargers are on the same charge state and with the same voltage setpoint. As mentioned before, battery charge current is not controlled by the master, but by each of the chargers individually. | After being elected, the master will make sure all chargers are on the same charge state and with the same voltage setpoint. As mentioned before, battery charge current is not controlled by the master, but by each of the chargers individually. | ||
- | At the beginning of the day, the master will measure the battery voltage before any of the other chargers, in the network, starts | + | At the beginning of the day, the master will measure the battery voltage before any of the other chargers in the network |
- | + | ||
- | In the absence of battery current sensor, as the BMV, the chargers on the network will have their output current added to estimate a better battery charge current. This way, the tail current setting, that is intended to finish the charge cycle earlier, can be used more precisely. | + | |
- | + | ||
- | ==== | + | |
+ | In the absence of battery current sensor, such as the BMV, the chargers on the network will have their output current combined to estimate a better battery charge current. | ||
===== 4. VE.Smart Product Compatibility ===== | ===== 4. VE.Smart Product Compatibility ===== | ||
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* The maximum number of devices which can be connected on one network is 10. | * The maximum number of devices which can be connected on one network is 10. | ||
- | * VE.Smart Networking is designed for small systems which do not have a [[venus-os: | + | * VE.Smart Networking is designed for small systems which do not have a [[venus-os: |
* The transmitter range will be found to be the same as the Bluetooth range - as experienced when connecting a device to // | * The transmitter range will be found to be the same as the Bluetooth range - as experienced when connecting a device to // | ||
* It is not possible to measure multiple battery temperatures/ | * It is not possible to measure multiple battery temperatures/ | ||
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=== Q5: Can I use Smart Battery Sense in systems already controlled by a GX device (eg CCGX/ | === Q5: Can I use Smart Battery Sense in systems already controlled by a GX device (eg CCGX/ | ||
- | No. The GX device already has voltage sensing (soon they will have temperature sensing too). Adding | + | Yes, but keep in mind that if, voltage or temperature information is also present on the GX Device, the charger will use that information in favor of the information coming from the Smart Battery Sense. The GX device already has, in most cases, |
===== DISQUS ===== | ===== DISQUS ===== | ||
~~DISQUS~~ | ~~DISQUS~~ |
victronconnect/ve-smart-networking.txt · Last modified: 2021-01-14 14:23 by marmour