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venus-os_dbus-up5000-hybrid's Introduction

dbus-up5000-hybrid

A venus-os driver for offgridtec/epever/avian/powmr/whatever UP5000-HM8042 hybrid inverters (a Offgridtec_IC-48, in this case).

This python3 program (venus-os service) provides two dbus-services:

  • com.victronenergy.solarcharger.<device>: emulate a victron "pv-charger"
  • com.victronenergy.vebus.<device>: emulates a victron multiplus, the "inverter"

For example (dbus-spy):

com.victronenergy.solarcharger.ttyUSB1                                                                                                                                                                                    UP5000 MPPT Solar Charger
com.victronenergy.vebus.ttyUSB1                                                                                                                                                                                                     UP5000 Inverter

Screenshots

Some venus-os screenshots of a offgridtec hybrid system:

"Remote Console":

image

image

image

image

image

image

Victron VRM:

image

Modbus(-RTU) interface

It uses the rs485 modbus interface of the up5000 hybrid inverter (so a rs485<->USB converter is neccessary to connect the inverter to the system).

The folder "doc" contains the up5000 modbus register description.

Startup

Manual start for testing, usb-serial device to use is given by commandline argument:

python3 /opt/victronenergy/dbus-up5000-hybrid/dbus-up5000-hybrid.py ttyUSB0

To use the venus-os "serial starter", you have to adjust udev-rules and the venus-os configuration file serial-starter.conf:

Add this to /etc/udev/rules.d/serial-starter.rules (adjust ID_MODEL for your rs485 - usbserial 
converter):

...
# UP5000 on rs485/modbus
ACTION=="add", ENV{ID_BUS}=="usb", ENV{ID_MODEL}=="USB2.0-Ser_", ENV{VE_SERVICE}="up5000"
...

Add this to /etc/venus/serial-starter.conf:

...
service up5000          dbus-up5000-hybrid
...

DVCC

The BMS-supplied values for MaxChargeVoltage (/Info/MaxChargeVoltage) and MaxDischargeCurrent (/Info/MaxDischargeCurrent) are used to control the up5000 PV-charger.

Todo

Make this function configurable.

Excess Power Relay

The up5000 service is able to control a shelly-like relais (tasmota) using MQTT. This is used to switch a external load when excess power is available (e.g. when the battery is full and there is still pv-power available).

Todo

More description, make this function configurable.

Logfile

As all venus-os services, the dbus-up5000-hybrid process creates a logfile in /var/log/dbus-up5000-hybrid.<device>/current (/var/log/dbus-up5000-hybrid.ttyUSB0/current for example).

This can be used for debugging or for informational purposes. Example output:

<snip>
@4000000064e4bc5c20b19354 22.08.23_15:46:58_CEST INFO:root:update...
@4000000064e4bc5c20bb6ec4 22.08.23_15:46:58_CEST INFO:root:update(): MaxChargeVoltage info from BMS: 55.2 V
@4000000064e4bc5c27297594 22.08.23_15:46:58_CEST INFO:root:setChargingVoltage(): cur charging voltage: 55.2.
@4000000064e4bc5c27359edc 22.08.23_15:46:58_CEST INFO:root:update(): MaxDischargeCurrent info from BMS: 250.0 A
@4000000064e4bc5c2d212f3c 22.08.23_15:46:58_CEST INFO:root:setDischargeCurrent(): cur Low Voltage Disconnect Voltage: 50.5.
@4000000064e4bc5c33213db4 22.08.23_15:46:58_CEST DEBUG:root:Reading register 0x3580, 'RegBAVol': 54.15
@4000000064e4bc5c393c2efc 22.08.23_15:46:58_CEST DEBUG:root:Reading register 0x3500, 'RegGridVol': 239.67
@4000000064e4bc5d038567c4 22.08.23_15:46:59_CEST DEBUG:root:Reading register 0x3501, 'RegGridCur': 0
@4000000064e4bc5d0f6eff14 22.08.23_15:46:59_CEST DEBUG:root:Reading long register 0x3502, 'RegGridPow': 0
@4000000064e4bc5d1590b6bc 22.08.23_15:46:59_CEST DEBUG:root:Reading register 0x3521, 'RegACVol': 229.96
@4000000064e4bc5d1b8927fc 22.08.23_15:46:59_CEST DEBUG:root:Reading register 0x3522, 'RegACCur': 5
@4000000064e4bc5d1b93036c 22.08.23_15:46:59_CEST INFO:root:AC power: 1149.800000 (229.960000 * 5.000000)
@4000000064e4bc5d2779184c 22.08.23_15:46:59_CEST DEBUG:root:Reading long register 0x3557, 'RegPVYield': 535.61
@4000000064e4bc5d2dc1ad2c 22.08.23_15:46:59_CEST DEBUG:root:Reading register 0x3549, 'RegPVVol': 152.19
@4000000064e4bc5d3976ee0c 22.08.23_15:46:59_CEST DEBUG:root:Reading long register 0x354b, 'RegPVPow': 1640.66
@4000000064e4bc5e03ed5154 22.08.23_15:47:00_CEST DEBUG:root:Reading register 0x3581, 'RegBACur': 6.54
@4000000064e4bc5e09f2d254 22.08.23_15:47:00_CEST DEBUG:root:Reading register 0x3586, 'RegBASoc': 0.79
@4000000064e4bc5e09fd59a4 22.08.23_15:47:00_CEST INFO:root:no excess power available but keep extra power on: pvvol: 152.19V, pvpow: 1640.66W, soc: 99.1
@4000000064e4bc5e0ce961bc 22.08.23_15:47:00_CEST DEBUG:root:Reading register 0x3511, 'RegGridChargerState': 1 0x1
@4000000064e4bc5e0cf9b184 22.08.23_15:47:00_CEST INFO:root:     * Running: True
@4000000064e4bc5e0cfae234 22.08.23_15:47:00_CEST INFO:root:     * Fault  : False
@4000000064e4bc5e0d046b9c 22.08.23_15:47:00_CEST INFO:root:     * HOV    : False (Hardware over-voltage)
@4000000064e4bc5e12e472dc 22.08.23_15:47:00_CEST DEBUG:root:Reading register 0x3559, 'RegPVChargerState': 9 0x9
@4000000064e4bc5e12f7107c 22.08.23_15:47:00_CEST INFO:root:     * Running   : True
@4000000064e4bc5e1300577c 22.08.23_15:47:00_CEST INFO:root:     * Fault     : False
@4000000064e4bc5e13083eec 22.08.23_15:47:00_CEST INFO:root:     * Charg mode: Equalizing charging
@4000000064e4bc5e13100334 22.08.23_15:47:00_CEST INFO:root:     * Input Voltage: Normal
@4000000064e4bc5e18dd74a4 22.08.23_15:47:00_CEST DEBUG:root:Reading register 0x3589, 'RegBattState': 0 0x0
@4000000064e4bc5e18e76b6c 22.08.23_15:47:00_CEST INFO:root:     * Batt state: Normal
@4000000064e4bc5e1ed5a764 22.08.23_15:47:00_CEST DEBUG:root:Reading register 0x3523, 'RegLoadState': 1 0x1
@4000000064e4bc5e1ee21ecc 22.08.23_15:47:00_CEST INFO:root:     * Running          : True
@4000000064e4bc5e1eea8724 22.08.23_15:47:00_CEST INFO:root:     * Fault            : False
@4000000064e4bc5e1ef291bc 22.08.23_15:47:00_CEST INFO:root:     * Low input voltage: False
@4000000064e4bc5e1efa1f54 22.08.23_15:47:00_CEST INFO:root:update end
<snip>

venus-os_dbus-up5000-hybrid's People

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venus-os_dbus-up5000-hybrid's Issues

Install script

Hello,

Pretty cool what you have done here, since it grabs info from RS485 im curious to see if this would work with other inverter brands too. You should create a service that installs this for you, perhaps this can be introduced to be installed via Package Manger from KWindrem

Kind regards,

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