SOLAR PCU TECHNOLOGY

PCU with LCD Display kit

Features:-

·        12 and 24 volt auto detection.

·        Up to 96 volts battery same controller.

·        PWM controlled charger.

·        Charger mode, PCU mode and priority modes are provided.

·        Friendly settable parameters.

·        User friendly display.

·        Same PCB works for internal of inverter and external controller also.

·        Proved in the field.

·        Microcontroller based design

·        Up to 95% efficiency.

·        GSM interface (optional)

·        Ideal diode function.

·        Battery reverse protection

·        Solar reverse protection.

·       Temperature sensing and fan control also implemented

User settable parameter:-

1. Battery full

2. Mains cut off at what battery voltage (inverter start at)

3. Mains enable at what battery voltage (inverter end at)
4. Maximum charging current

5. Mains cut off at what Solar current. (Solar start at)

6. Mains enable at what Solar current. (Solar end at)

7. LCD lines selection.

Calibration parameters:-

1. Battery voltage calibration. (Battery voltage error correction)

2. Charging current calibration. (Charging current error correction)

LCD parameters:-

1. Company name

2. Solar Voltage

3. Solar charging current

4. Battery voltage

5. Solar wattage.

6. KWH (units) of solar power was accumulated.

7. Type of battery means, 12/24 battery. For 36,48 volt need setting by calibration switches

8. Load status like, 

     If load on mains power, PCU was shows “LOAD ON MAINS”

     If load on Battery, PCU was shows “LOAD ON INVERTER”

     If load 0n solar power, PCU was shows “SOLAR INV MODE”

Functionality:-

PCU gives more priority to solar power converted to load. But CCU gives first priority to battery charging.

If battery voltage was reached full, then only load was transfer to solar. 

Priority mode: in this mode enable by PCU and PSV switch on the board.

(Both should be on). In this mode once solar presences and battery reached inverter start voltage, then it will goes to inverter mode. And it will be in this mode until battery voltage reached to set voltage (inverter end voltage) with out consider solar available or not. In This mode, system was in inverter mode evening hours also. 

         This gives more advantage for save the mains electricity bill.

Solar Inverter mode: if solar power sufficiently available and Battery was reached full then solar power diverted to Load.

PCU displays “Solar inverter Mode”. In this mode all the devices connected to load was on solar power. In this will  mains cut to inverter automatically.

In this mode battery discharged to 25% then it will goes Solar Charging Mode, until it will battery reached full condition.

Solar Charging mode: if solar presence, mains available and Battery was not full then solar power used to Charging the battery.  In this mode PCU displays “Solar charging”.

 Normal power mode:

 if solar presences not available, inverter works as regular inverter. PCU displays “Mains Mode”.

Inverter mode:-

if solar and mains available, then PCU displays “Inverter Mode”.

Auto priority logic is implemented as below:

When the solar power and grid power are available, battery will be charged by solar power.

If the battery voltage is too low, then both solar power and grid power will charge the battery.

When the grid power and solar power are available, the load will be powered by solar power.

If the load requirement is more than the available solar power then the battery will supply the additional load. 

When the battery, on discharging, reaches the predetermined low voltage level, then solar power will charge the battery and grid power will supply the load. 

When the battery voltage, on charging, reaches the predetermined high voltage, then the battery and solar power will switch back to supply the load by disconnecting grid power. 

When   solar power is not available, the grid power will charge the battery and supply the load like any conventional UPS.

PCU works as for following table.

mains	solar	battery full	battery chargingon	load on
On	off	no	mains	mains
On	off	yes	Mains charge off	mains
Off	off	Yes/no	Mains charge off	Battery until battery low
Off	On	No	Solar	Solar + Battery
Off	On	yes	Solar  charge off	Solar + Battery
On	On	yes	Mains +Solar  charge off	Solar + Battery
On	On	No	Solar  and  Mains  charge off	Mains

 

Technology transfer contact on 09581457196, sivajoginaidu@gmail.com, sivajoginaidu@yahoo.com

PLS NOTE: we are not a MANUFACTURERS, we provide Kits for evaluation purpose

CCU for inverters (Internal circuit) : 

Our CCU is a micro-controller based design. The micro-controller will sense the battery full charge voltage then take decision for charge or disconnect the panel from battery. It wills cut-off the battery from panel when it reaches full charge and it will reconnect the battery if the battery drops to a preset level. The charger will also disconnect the panel from the battery, if solar power not available. This is to avoid the reverse current flow from the battery to the panel during night. Incorporated Terminals reverse protections of Battery, panel. If you connect both panel and battery reverse at the same time, the micro-controller will not switch on the charger. In all the above cases, the circuit will not damage and there will not be any current flow from the panel or battery. Moreover, if you connect the panel reverse, the micro-controller will not switch on the charger; similarly if you connect the battery reverse, the charger will not function.

 Technology transfer contact us

ACC e-solutions,

Hyderabad

 09581457196,

sivajoginaidu@yahoo.com