SOC_EQUALIZER
SOC equalisation trims for up to four parallel BESS containers, scaled so the fleet setpoint is preserved.
When to use it
Use SOC_EQUALIZER when two to four interchangeable BESS containers sit on one bus under one fleet setpoint and drift apart in state of charge, so the fleet's usable energy is limited by whichever container hits its limit first.
Interface
The published port signature. This is the whole of what the block exposes to your program — the implementation body is not shown here and ships with the download.
Inputs
| Port | Type | Unit |
|---|---|---|
| ENABLE | BOOL | — |
| SOC_1 | REAL | % |
| SOC_2 | REAL | % |
| SOC_3 | REAL | % |
| SOC_4 | REAL | % |
| EN_1 | BOOL | — |
| EN_2 | BOOL | — |
| EN_3 | BOOL | — |
| EN_4 | BOOL | — |
| EQ_GAIN | REAL | %/% |
| TRIM_MAX_PCT | REAL | % |
| DEADBAND_PCT | REAL | % |
| SPREAD_ALM_PCT | REAL | % |
| SPREAD_TMO | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| TRIM_1 | REAL | % |
| TRIM_2 | REAL | % |
| TRIM_3 | REAL | % |
| TRIM_4 | REAL | % |
| TRIM_SUM | REAL | % |
| SOC_AVG | REAL | % |
| SOC_SPREAD | REAL | % |
| N_ACTIVE | USINT | — |
| CLIPPED | BOOL | — |
| VALID | BOOL | — |
| ALM_SPREAD | BOOL | — |
| ALM_INSUFF_UNITS | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 8
- Simulated scans
- 68
- Simulator
- v0.1.0
Complete IEC 61131-3 implementation with a published test suite that runs on the vplant simulator. The counts above are that suite, executed on this build.
- Conforms to IEC 61131-3
- Conforms to IEC 61499
Download SOC_EQUALIZER — free
Create a free Ri Tech account to download the block. You get the Structured Text body, the Rockwell Add-On Instruction (.L5X), the Schneider Control Expert DFB (.XDB), PLCopen XML, the IEC 61499 function block type (.fbt) and the datasheet.
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Source is never published on this page. The implementation is released to a signed-in Ri Tech account — free of charge, but never anonymously.