[TRNSYS-users] Error with type48d battery voltage input

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Subject: [TRNSYS-users] Error with type48d battery voltage input

From: dimitris soukoulis <saintdimi@hotmail.com>

Date: Mon, 20 Sep 2021 12:26:18 +0000

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Thread-topic: Error with type48d battery voltage input

Dear All,

I am trying to simulate a PV system with battery storage but I cant seem to make It work. I am using type103a PV array, type 48d inverter/regulator and type47d battery. I have tried many modifications and sizes of the PV and battery, but I keep getting the following error from the inverter component:

*** Fatal Error at time : 0.500000

Generated by Unit : 14

Generated by Type : 48

TRNSYS Message 126 : The referenced Unit has a bad input value.

Reported information : Input # 4, Reported Problem: The battery voltage must be positive and non-zero.

I have connected the battery’s “total voltage” output to the “Battery Voltage” input of the regulator/inverter (input # 4). The default value of Input # 4 is set to 0, so I tried initializing it with other positive values, but when I do that I get a message for “Invalid floating point operation “ and an “unexpected error” which will make the TRNSYS to abort.

Can anyone help me with this problem?

Kind regards,

Jim Soukoulis

NTUA