BlueSolar 100-15 True MPPT solar charge controller
The BlueSolar series of charge controllers are some of the latest and most efficient MPPT controllers available. The BlueSolar 100-15 controller is based on a Freescale MC9S08AC32 40MHz MCU, can handle up to 100V 15A PV installation, hence then model name. This allows up to 400W of PV on a 24V battery setup, which is pretty much for such a relatively small controller.
Specs
- Type: MPPT charge controller with load output
- Micocontroller: Freescale MC9S08AC32 40Mhz MCU
- Switches: MOSFET N-channel 100V/180A/5mOhm, 40V/190A/2.5mOhm for load output
- Max. PV voltage: 100V
- Max. PV current: 15A
- Max. load current: 15A
- Battery voltage: 12V or 24V, auto-detect
- Battery fuse: 20A blade fuse
- Protection:
- Over-voltage (PV, battery)
- Over-temperature (buck converter)
- Low-battery voltage cut-off
- Battery charge management
- Terminals: screw terminals, max. 6mm2/10AWG
- Monitoring: Two LEDs, remote VE Direct RS232 communication cable to a computer or meter device
- Auxilary port: JST-PH 4-pin 2mm pitch connector, pinout GND-RX-TX-5V, 19200 baud rate
- Firmware: Upgradable via VE Direct RS232 cable and VE Connect software
- Stock firmware: v1.16
- Manufacture date: 2015, week 16
- Size: 113.9 x 100.7 x 46.9 mm
Schematic
The following is a partial reverse-engineer of the power stage of the charge controller, no logic or support circuitry is included.
Monitoring
The RS232 port on the controller, when connected, outputs a continuous stream of the current status and state of the system.
Status provided:
- Panel voltage, mV - measured direct after the screw terminal
- Panel power, W - product of ..
- Battery voltage, mV - measured on directly after the screw terminal, before the fuse
- Battery current, mA - sense resistor, delta pv/load current
- Load output state, ON/OFF - output switch state
- Load current, mA - sense resistor
- Yield total, kWh - accumulated overall
- Yield today, kWh - accumulated one day
- Maximum power today, W - peak power output achieved
- Yield yesterday, kWh
- Maximum power yesterday, W
Changing the settings of the controller is also possible, done via special commands outlined in the white paper. They begin with a ":" and end with a new-line character.
