Hello Victron,
please help. I want to supply fridge(s) by existing solar system (Phoenix VE.Direct, Smart Solar, BMV...). So far i have used phoeinx output to switch simple relay so when the battery is empty inverter cuts off so the relay and TVs are back in mains w/o any interrupt (ok ca 10 to 20ms of contact switching). Works already one year. But now i wanted to connect the fridge(s). This is not longer so easy due to the unsynchronous inverter and main/grid sinusoidal voltage. So specially when switching from inverter to mains fridge motor is not very happy by hearing him. Inverter does not like it also because it is not longer measuring the output current right (my fault, no risk no fun).
Is there any chance(even by HW/SW community or dyi hack) to synchronize Phoenix inverter output to mains/grid? Warranty loss i accept. I know there is Filax ATS, but not suitable for motors, i know there i multiplus but here i have issue because it can feed back to grid and i do not want to sign special contract with provider (as many others in Czech Republic). Maybe if multi can 100% guarantee no feed as pure UPS ? There is something like Axpert from Voltronics but it is High Frequency design and has high no load consumption. Also i prio quality before price, therefore i want to continue to grow the system with Victron.
Thank you.