Solar PCU

GEESYS Technologies (India) Pvt. Ltd, Bangalore is one of the leading manufacturer and exporter of renewable energy solutions like MPPT based solar inverter (3KW-100KW) and windmill inverter (3KW-50KW).

We are manufacturers of full range of solar power products including Solar Inverter, Grid sharing Solar UPS-GSS, Solar Power Conditioning Unit- PCU, Solar inverter for submersible pumps.

The functioning of this PCU is same as that of Solar Hybrid UPS. The main advantages of this PCU are :
(a) the charge controller is designed for the full capacity of the PCU and
(b) the transformers used are sufficiently over rated for long durations of working ( inverter works for longer durations by discharging battery and thus ensures maximum usage of Solar power) and are made of Copper for higher efficiency. Thus user can connect upto 1000W panels to a 12V unit and upto 2000W panels to a 24V unit.

The functioning is quite similar to the PCU with PWM charger. The main difference is in the efficiency because of the true MPPT design with a cutting edge DSP based design. The Vmpp ranges of 14-40V in 12V models and 28-60V in 24V models are the widest available in the market. The Open Circuit Voltage is a whopping ‘5 times the DCV’ for 12V models and ‘3 times the DCV’ for 24V models. This also has an LC Display to show the MPPT On/Off, MPPT o/p voltage and current and all the trip messages.

Automatic mains Disconnect-Reconnect function enables maximum usage of solar power. Like in all our other models, even this PCU boasts of a perfect current sharing of Solar with Mains for the best functioning of the intended usage. This feature ensures preference for solar power, proper charging of batteries by efficiently harnessing both soalr and mains power and also that battery is never over charged by both sources loading each other.

PCU is a Solar Power Conditioning Unit (PCU) which uses Solar energy (primary) and also the power from grid (secondary), to charge the batteries as well as to feed to connected load. Since usage of power from grid is secondary, grid power is only used when solar energy is not present and battery voltage level reduces to a certain level. Grid power is also needed when solar power is reduced to a certain level and battery voltage is reduced to a certain level. PCU uses an advanced technology named MPPT (Maximum Power Point Tracking) to extract maximum power from the solar panel. The solar charger is IGBT based.

Main Functional Features of Solar PCU

  • 16 bit DSP Controlled design
  • Single card technology
  • Inbuilt MPPT solar charger
  • Wide range of PV input
  • Auto PV VMP tracking
  • INV Efficiency up to 85 - 90%
  • MPPT Charger efficiency up to 98%
  • User friendly LCD display
  • Max usage of solar priority control
  • Auto Charging from Grid & Solar
  • High surge capability for heavy load
  • Rs232 Ex- communication
  • Ratings–
    • 500W – 12V DC
    • 1000W- 24/48v DC
    • 2000w - 48v DC

               TECHNICAL SPECIFICATIONS

 Parameters  units  Rating
 System Rating  KVA  1  2  5  5  7.5  10 15 
 Operating Dc voltage  V  24 48  48  48  96  120   120  120  180  240

PHOTOVOLTAIC INPUT

 Input voltage Range(Min-Max)  VDC  36-90 72-180   72-180  72-180  144-360  180-450  180-450  180-450  270-450  360-450
 Maximum PV power  recommend  Kw  1.0 1.0  2.0  3.0  5.0  5.0  6.0  7.5  10  15 

MPPT based charge controller

 Switching element    IGBT
 Controller    DSP
 type of charger    PWM with MPPT
 efficiency  %  92  95

Configurable Parameter

 

Default value

 Battery Low Buzzer  V Batt Low cut +0.2  11.2
 Battery Low cut  V  10-11.7  11.7
 Battery high cut  V  15-16  15.5
 Battery charging voltage by SPV  13.5-15  14.5
 Battery charging current by SPV  12-40  18
 Battery charging voltage by grid  13.0-14.5  14.2
Battery charging current by grid  3-12  10
grid low cut Voltage(IT Mode/Normal)  175-200/120-200  175/120
grid high cut Voltage(IT Mode/Normal)  245-255/245-280  255/280
Grid changing    Enable/Disable  Enable
IT load     Enable/Disable   Enable
Operating Mode    Smart/PCU/hybrid  Smart
Changeover time      <10ms
Output voltage low  V  170-190  185
Output voltage high  250-260  255
No load shutdown     Enable/Disable  Disable

 Battery

Grid Disconnect(solar available)   @14.5/Battery for 2minutes or 13.5/battery-100% current
 Temp.compensation    @3mV/cell; 18mV/battery
 Grid connect(PCU mode/smartmode)  V  11-12  11.5

 Inverter

 Switching element    IGBT,MOSPET
Control   PWM
normal output voltage VAC 220
output supply phase   1 Phase,3 wires
output waveform   sinewave
nominal frequency Hz 50.0
load power factor tag 1/0.8
voltage regulation % 1.00
output voltage distortion with 100% linear level % <3
overload capacity %

100-120(3 time auto reset):60 sec       200-300%:1sec

 120-150(3 time auto reset):30 sec      300-400%:250msec

                         150-200%:2 sec        >400%:20msec     

peak efficiency % >82,>88
noise @ 1meter dB 60
cooling   fan,Temp controlled
protections   overload,battery low,battery high,output low,output high,output short ckt,input short ckt,overheat,under frequency,over frequency,solar panel reverse
switches   Reset for system on/off,up,down,back,enter(for LCD configuration)
indications   system on,inv on,SPV charging,Grid charging,batt low/high, overload,overheat,mains low,mains high,under frequency,lower frequency
 Display Parameters  
  •  Battery voltage,charging current,discharging current,charging AH,discharging AH
  • solar voltage,solar current,instantaneous power,cummulative power
  • Grid voltage,Grid current,Grid frequency,instantaneous power,cummulative power
  • output volatage,output current,ouput frequency,instantaneous power,cummulative power

 

 Environment

 Operating Temperature c 0-50
Max relative humidity @25'c (non condensing) %  95
 Standard compliance    Ip21
data logging     30 days data storage
 Dimensions(L*W*H)  Inch  18*10*20,23*13*26  26*13*26
 Weight  Kg  35,43 50,60  78,65  90

GEESYS Solar off grid bi directional solar inverter is the new generation inverter, which has been designed specially for the solar application. Our long standing, Two decade expertise in solar On Grid and Off grid inverter market has resulted in to a smart, more reliable and efficient Sunbird Solar Inverter. Sunbird Solar inverter has many unparallel features, which gives best ROI for the user and helps in bringing the dream of Green planet more closer.

PCU is a Solar Power Conditioning Unit (PCU) which uses Solar energy (primary) and also the power from grid (secondary), to charge the batteries. Since usage of power from grid is secondary, grid power is only used when solar energy is not present and battery voltage level reduces to a certain level. Grid power is also needed when solar power is reduced to a certain level and battery voltage is reduced to a certain level.

When you want to depend solely/only on Solar power, or for high power solar applications such as solar power plants, you can use this extremely rugged and highly intelligent PCU. This uses a MPPT charge controller which has a peak efficiency >95% and harnesses all the input sources – Solar, Battery, Grid power / DG – in the most economical and application friendly way. You can connect any kind of critical load since it uses an Online topology.

The most fascinating feature of this PCU is that when solar is available, the grid doesn’t get switched off but grid power is also not used for charging or for load. And batteries do not get discharged when solar is available. Solar charges the batteries and also powers the load. When solar is not available, you have a choice of using the mains or battery. Battery capacity could be very low, if you do not want to store the power.

The DC input to the MPPT can be between +20% and +50% of the system DCV. The Vmpp per panel is between 13 & 19V and the open circuit voltage is two and half times the Nominal Voltage. The maximum Charging current that can be set is 40A which covers all normally possible battery capacities. LCD displays all MPPT parameters and all state of the art protections are provided for smooth functioning and long life.

The Grid (Mains) charger is also highly efficient because it is Power Factor Corrected (IGBT Rectifier). GPCU is available from 48VDC to 360VDC and from 1kVA to 100kVA capacities. Pure sine wave output and galvanic isolation between i/p & o/p are other features that make this PCU, a true winner.

Solar UPS Features:

  • Zero change over time to ensure 100% uninterrupted power to all the applications.
  • Load will be driven by solar + Grid simultaneously giving maximum preference to solar.
  • DSP base design built in MPPT solar charge controller.
  • Most advanced LCD features with AC & DC energy meters.(optional)
  • USB/Ethernet based monitoring with 30 days data storage. (optional)
  • Maximum preference to solar. PCU mode working.
  • Capability of 120% panel rating.
  • Compatible with all PV arrays having different no. of cells.(36 cell/60 cell/72 cell)
  • Battery less operation
  • High efficiency
  • True Bi-directional Solar Inverter
  • Higher Array voltage capacity optionally available
  • Inbuilt charge controller
  • MPPT - Achieved through Incremental Conductance Algorithms
  • Battery charging through Grid up to 100%
  • Selectable source feature - Grid / Battery DC fan for low power consumption
  • Inbuilt isolation transformer for galvanic isolation.
  • Variable fan speed - for increased reliability, results into lesser dust suction inside the cabinet
  • Battery Health For Longer Life
  • Extensive electronic protections
  • Utilizes maximum power available from the panel
  • Computer interface (Optional)
  • LCD display with Energy Meter and Data Logging (optional)

               TECHNICAL SPECIFICATIONS

 Parameters  units   Rating
 System Rating  KVA  5  7.5  10
 Operating Dc voltage  V 96   120  120  180

PHOTOVOLTAIC INPUT

 Input voltage Range(Min-Max)  VDC  144-360  180-450  180-450  270-450
 Maximum PV power  recommend  Kw 5.0  6.0  7.5  10 

MPPT based charge controller

 Switching element    IGBT
 Controller    DSP
 type of charger    PWM with MPPT
priority   solar/Grid/battery
 efficiency  %  95

Configurable Parameter

 

Default value

 Battery Low Buzzer  V Batt Low cut +0.2  11.2
 Battery Low cut  V  10-11.7  11.7
 Battery high cut  V  15-16  15.5
 Battery charging voltage by SPV  13.5-15  14.5
 Battery charging current by SPV  12-40  18
 Battery charging voltage by grid  13.0-14.5  14.2
Battery charging current by grid  3-12  10
grid low cut Voltage  175-200/120-200  175/120
grid high cut Voltage  245-255/245-280  255/280
Output voltage low  V  170-190  185
Output voltage high  250-260  255

 Battery

 Temp.compensation    @3mV/cell; 18mV/battery

 Inverter

 Switching element    IGBT
Control   PWM
normal output voltage VAC 220
output supply phase   1 Phase,3 wires
output waveform   sinewave
nominal frequency Hz 50.0
load power factor tag 0.8
voltage regulation % 1.00
output voltage distortion with 100% linear level % <3
overload capacity %

100-110:10 mins      150-200:1sec

110-120:2 mins       200-300:50msec

120-150:30 sec        >200:20msec

peak efficiency % 85
noise @ 1meter dB 60
cooling   fan
protections   overload,battery low,battery high,output low,output high,output short ckt,input short ckt,overheat,under frequency,over frequency,solar panel reverse
switches   Reset for system on/off,up,down,back,enter(for LCD configuration)
indications   system on,inv on,SPV charging,Grid charging,batt low/high, overload,overheat,mains low,mains high,under frequency,lower frequency
 Display Parameters  
  •  Battery voltage,charging current,discharging current,charging AH,discharging AH
  • solar voltage,solar current,instantaneous power,cummulative power
  • Grid voltage,Grid current,Grid frequency,instantaneous power,cummulative power
  • output volatage,output current,ouput frequency,instantaneous power,cummulative power

 

 Environment

 Operating Temperature c 0-50
Max relative humidity @25'c (non condensing) %  95
 Standard compliance    Ip21
data logging     30 days data storage
 Dimensions(L*W*H)  Inch  23*13*26  26*13*26
 Weight  Kg  55 65  78  90