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

[Christopher Warfel]

Much appreciated.   Thank you, Chris

On 11/15/2024 8:27 AM, Poole, Jharen wrote:
> Hello Chris,
>
> Stage 0 is what we would consider the state of the inverter before it 
> reaches normal. Once you reach normal (stage 1) that is when you will 
> begin outputting power, inverting power from solar, etc.
>
>
> Best Regards,
>
> Jharen Poole
> Applications Engineer II
> 972-575-8875
> ------------------------------------------------------------------------
> *From:* RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> on 
> behalf of Christopher Warfel via RE-wrenches 
> <re-wrenches at lists.re-wrenches.org>
> *Sent:* Thursday, November 14, 2024 8:37 AM
> *To:* re-wrenches at lists.re-wrenches.org 
> <re-wrenches at lists.re-wrenches.org>
> *Cc:* Christopher Warfel <cwarfel at entech-engineering.com>
> *Subject:* Re: [RE-wrenches] More Issues with Parallel Sol-Ark 15K System
>
> 	
> Caution: This email is from an external source.
>
>
>
> 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
-- 
Christopher Warfel
           ENTECH Engineering Inc.
    PO Box 871, Block Island, RI 02807
                   401-477-5773
EE Logo <https://entech-engineering.com/Home/default.php>
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