Sigenergy Sigenstor and EVCC - example

[Chr1892]

I successfully configured a evcc.yaml to work with the SigenStor Hybrid PV/Battery System

I connected the SigenStor and my EVCC Server (running on a Macbook) to the same Wifi Network. I use Modbus TCP to read the Battery SOC and power, and the PV1 and 2 Voltage and Current. Each Voltage and Current are multiplied, then PV1 power and PV2 power are added to get the total PV power. (The modbus documentation shows PV3 and 4, too, but PV 3 is not used in my case and I think PV4 can be ignored). I use an efficiency factor of .97 to calculate the AC power from the DC power.

Your system installer has to activate the Modbus TCP protocoll in the MySigen App.
Click the Device button to switch to Device panel. Click on the SigenStor Settings button, and go into the SigenStor Settings panel. Turn on the Modbus TCP Server Enable button, and click on the Save button on the right. (See [[kp_installationsinstruktioner_sigenergy_1_.pdf]])

Here's the configuration for the PV production meter:

- type: custom
  name: Sigenstor-PV
  power:
    source: calc
    add:
    - source: calc
      mul:
      - source: modbus # PV1 voltage
        id: 1
        uri: 192.168.0.182:502
        timeout: 1s
        register:
          address: 31027
          type: holding
          decode: int16
        scale: 0.097 # Value in Volts
      - source: modbus # PV1 current
        id: 1
        uri: 192.168.0.182:502
        timeout: 1s
        register:
          address: 31028
          type: holding
          decode: int16
        scale: 0.0097 # Value in Ampere
    - source: calc
      mul:
      - source: modbus # PV2voltage
        id: 1
        uri: 192.168.0.182:502
        timeout: 1s
        register:
          address: 31029
          type: holding
          decode: int16
        scale: 0.097
      - source: modbus # PV2current
        id: 1
        uri: 192.168.0.182:502
        timeout: 1s
        register:
          address: 31030
          type: holding
          decode: int16
        scale: 0.0097

Here's the configuration for the Battery:

- type: custom
  name: Sigenstor
  power:
    source: modbus
    id: 247
    uri: 192.168.0.182:502
    timeout: 1s
    register:
      address: 30037
      type: holding
      decode: int32
    scale: -1 # ESS power in W
  soc:
    source: modbus
    id: 247
    uri: 192.168.0.182:502
    timeout: 1s
    register:
      address: 30014
      type: holding
      decode: int16
    scale: 0.1 # SOC in %
  capacity: 10.4 # kWh

Add both the configurations to your evcc.yaml file in the "meters" section, then add the PV-meter and battery-meter to your "site":

site:
  title: My Home
  meters:
    grid: # name of your grid sensor
    pv: Sigenstor-PV
    battery: Sigenstor

For further reading, here's the Modbus Documentation that I used, and a user Manual for the modbus activation (remote EMS scheduling is not required):
Sigenergy Modbus Protocol - 20240409.pdf
kp_installationsinstruktioner_sigenergy_1_.pdf

[andig]

Do you want to wrap this in a meter template? Also seems grid is missing- all hybrid inverters should have those measurements somewhere.

[Chr1892]

Yes, I could add the grid measurements. I didn't need it for my own purposes, because I have a Keba E10 grid meter. How do I create a meter template for the Sigenstor system?