[RE-wrenches] More Issues with Parallel Sol-Ark 15K System

[Christopher Warfel]

Can you point to a reference to what stage 0 is?  This is a new term for 
me. So far, have not installed multiple Sol-Ark inverters at one site.  
Thank you, Chris

On 11/12/2024 12:50 PM, Poole, Jharen via RE-wrenches wrote:
> Our inverters utilize CANbus communications for establishing parallel 
> operation between multiple Sol-Ark inverters. CANbus communication 
> operates as a serial communication protocol. In this setup each 
> inverter in the setup is linked via a parallel communication cable 
> forming a daisy-chain configuration. If one inverter in the chain 
> experiences a shutdown due to a fault, the communication chain is 
> disrupted. Consequently, the other inverters will also power down when 
> we see this loss, ensuring system protection and safeguarding the 
> customer’s investment.
>
> Paralleling must be done at a stage 0 they have to sync and that is 
> done in the pre normal mode, functionality wise having them going into 
> sync is extremely difficult due to timing issues. It's easier to time 
> it from a stage 0 than to do it when one unit is already running.
>
> Maintaining synchronization between inverters is critical; if the 
> inverters were to operate out of parallel it can result in conflicts 
> between the operation of inverters and desynchronization of the units. 
> This misalignment can escalate, potentially causing significant damage 
> to one or more inverters and risking harm to other connected equipment.
>
>
> Best Regards,
>
> Jharen Poole
> Applications Engineer II
> 972-575-8875
>
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-- 
Christopher Warfel, PE
Entech Engineering, Inc.
POB 871 Block Island, RI 02807
401-447-5773
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