Solar Hybrid Inverter, PCU & Offgrid Solar systems

(1) Solar Smart Hybrid Home UPS :

This is just one of its kind Solar Hybrid UPS available in India with true current sharing between Grid and Solar most effectively and efficiently. It has a micro controller based PWM Charge Controller which can handle upto 20A charging current. When the Solar is available, the grid power will not be used for battery charging or for the load. Load works from Solar power. Mains will be used only when the battery voltage is below a preset voltage (adjustable). When mains is on, Solar and Mains do not load each other like in other UPSs, but the charging is done with the intelligently shared current. An outstanding feature is that if the UPS gets overloaded while working on Solar, the load gets shifted to Mains, automatically. Again when the Battery charge reaches a preset high level, Mains is cut off and the load gets shifted to Solar/battery.

Capacities available are 400, 700, 900 & 1100VA in 12V and 1.6kVA & 2.2kVA in 24V. The Open Circuit Voltage is 110% more than the system DCV and the Vmpp range for 12V is 14-18V & for 24V, it is 28-36V. The maximum panel wattage that can be connected to a 12V system is 400W and to a 24V system, it is 800W.

The output is pure Sinewave and all other regular features in a Home UPS is available in this as well. Our proprietary features such as Hot swappability of batteries, SMPS charger on mains and anti MOSFET blast lock and our famed ‘safest short circuit protection’ etc also are incorporated.

Smart Hybrid Home UPS (with PWM Charger)

INPUT – SOLAR

Panel Voltage Nominal (V)

12V

24V

Maximum Open circuit Voltage (Voc)

25V

50V

Vmpp

14V -18V

28V -36V

Charger Type

PWM Charger, current sharing with mains

Maximum Charging current (from solar)

20A

Maximum Panel Wattage (Wp)

400W

800W

Mains Auto disconnect voltage

14.6V ±1%

29.2V ±1%

Mains Auto Reconnect voltage

11.8V ±1%

23.6V ±1%

Indication

Solar Present

INPUT – GRID

Normal Voltage

220V AC Single Phase

Input  Voltage window - UPS Mode

 

 

 

170 VAC to 270VAC

Input  Voltage window - Inverter Mode

120 VAC to 290VAC

Normal Frequency

50 Hz ±6

Minimum Mains voltage for charging

120V AC

Maximum charging current

15A(From Mains)

OUTPUT

Output Voltage

220V AC Single Phase

Power Factor

0.8 lag to Unity

Nominal Voltage / Regulation

220V AC Single Phase +/- 5%

Frequency

50Hz +/- 0.1 Hz

Waveform

Pure Sine Wave

Total Harmonic Distortion

< 2% for linear load, <3% for non linear load

Over Load capacity

150% for 60Sec

Inverter Type

PWM

Transient Response

Remains within +/-5%, Recovers to 98% within one cycle

Changeover Time

<10mS / <4mS (optional)

Peak Inverter Efficiency

>90%

Protections

Input under/over voltage, Battery deep discharge, Battery overcharge, Output under/over voltage, Output Overload, Output Short Circuit, Anti-MOSFET blast lock on battery disconnection



(2) Off-Grid PCU with PWM Charger (PPCU) :

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.

Output is pure sine wave and PPCU is available in 1kVA(24V) and 2kVA(24V) models.

Off-Grid PCU (with PWM Charge Controller)

INPUT – SOLAR

Panel Voltage Nominal (V)

12V

24V

Maximum Open circuit Voltage (Voc)

25V

50V

Vmpp

14V -18V

28V -36V

Charger Type

PWM Charger, current sharing with mains

Maximum Charging current (from solar)

50A

Maximum Panel Wattage (Wp)

1000W

2000W

Mains Auto disconnect voltage

14.6V ±1%

29.2V ±1%

Mains Auto Reconnect voltage

11.8V ±1%

23.6V ±1%

Indication

Solar Present

INPUT – GRID

Normal Voltage

220V AC Single Phase

Input  Voltage window - UPS Mode

 

 

 

170 VAC to 270VAC

Input  Voltage window - Inverter Mode

120 VAC to 290VAC

Normal Frequency

50 Hz ±6

Minimum Mains voltage for charging

120V AC

Maximum charging current

15A(From Mains)

 

 

OUTPUT

Output Voltage

220V AC Single Phase

Power Factor

0.8 lag to Unity

Nominal Voltage / Regulation

220V AC Single Phase +/- 5%

Frequency

50Hz +/- 0.1 Hz

Waveform

Pure Sine Wave

Total Harmonic Distortion

< 2% for linear load, <3% for non linear load

Over Load capacity

150% for 60Sec

Inverter Type

PWM

Transient Response

Remains within +/-5%, Recovers to 98% within one cycle

Changeover Time

<10mS / <4mS (optional)

Peak Inverter Efficiency

>90%

Protections

Input under/over voltage, Battery deep discharge, Battery overcharge, Output under/over voltage, Output Overload, Output Short Circuit, Anti-MOSFET blast lock on battery disconnection



(3) Off Grid PCU with MPPT Charger - MPCU :

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.

MPCU is available in 1kVA(24V) and 2kVA(24V) models

Off-Grid PCU (with MPPT Charge Controller)

INPUT – SOLAR

Solar Charger (MPPT)

12V System

24V System

Panel Voltage Nominal (V)

24V*

36V*

Maximum Open circuit Voltage (Voc)

66V

66V

Vmpp

14V -40V

28V -60V

Charger Type

MPPT Charger, current sharing with mains

Maximum Charging current (from Solar)

10A/20A

Maximum Panel Wattage (Wp)

200W/400W

400W/800W

Mains Auto disconnect voltage

14.6V ±1%

29.2V ±1%

Mains Auto Reconnect voltage

11.8V ±1%

23.6V ±1%

LCD Parameters

MPPT On/Off, MPPT o/p volatge & current, trip messages

Protections

Lightning, Panel reverse polarity, battery reverse polarity(fuse), i/p high voltage, short sircuit, reverse discharge block 

* The nominal voltage given is applicable only for Normal Poly-crystalline panel with max Voc 22V/44V

For other types of panels with non standard Vmp & Voc like in Mono-crystalline, parameters are different

INPUT – GRID

Normal Voltage

220V AC Single Phase

Input  Voltage window - UPS Mode

 

 

 

170 VAC to 270VAC

Input  Voltage window - Inverter Mode

120 VAC to 290VAC

Normal Frequency

50 Hz ±6

Minimum Mains voltage for charging

120V AC

Maximum charging current

15A(From Mains)

OUTPUT

Output Voltage

220V AC Single Phase

Power Factor

0.8 lag to Unity

Nominal Voltage / Regulation

220V AC Single Phase +/- 5%

Frequency

50Hz +/- 0.1 Hz

Waveform

Pure Sine Wave

Total Harmonic Distortion

< 2% for linear load, <3% for non linear load

Over Load capacity

150% for 60Sec

Inverter Type

PWM

Transient Response

Remains within +/-5%, Recovers to 98% within one cycle

Changeover Time

<10mS / <4mS (optional)

Peak Inverter Efficiency

>90%

Protections

Input under/over voltage, Battery deep discharge, Battery overcharge, Output under/over voltage, Output Overload, Output Short Circuit, Anti-MOSFET blast lock on battery disconnection



(4) On Grid PCU with MPPT Charger (GPCU) :

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.

On-Grid PCU (with MPPT Charge Controller)

Capacity (KVA)                                                                  1/2/3/5                 7.5/10                   5/20/30                      40/60/80/100/120/160

SOLAR CHARGER (MPPT)

DC Voltage (DCV)

                                                                48/72/96/120/144/192/240/360

Nominal Input Voltage (V)

                                                                [+20%(min) to +50%(max)] of DCV

Maximum PV open circuit Voltage (Voc)                     

                                                                   2.5 times nominal voltage

Vmpp (per panel)

13V-19V

Maximum PV Wattage(Wp)                                                                               

1.5x (x = PCU capacity)

Maximum charging current settable(From Solar)    

40A

Minimum charging current settable(From Solar)         

1.5A

Maximum MPPT O/P Current                                              

300A

Default Priority                                                                          

Solar-Mains-Battery (various combinations possible)

Peak Efficiency                                                                     

>95%

Display Parameters (LCD)

Panel Voltage, MPPT o/p Voltage, MPPT o/p Current, Units generated, MPPT o/p Power,  Temperature, Trip/Status messages

Protections (Solar section)

Lightning,High voltage,Over current,Short circuit,  Panel Reverse polarity, Battery Reverse Polarity (fuse), Battery Over charging,over Temperature

INPUT – GRID

 

                                                                                                                          1Φ                      1Φ/3Φ                      3Φ                                       3Φ

Voltage Range

                          230v ± 20% in Single Phase                         415v ± 20% in Three Phase

Frequency Range

50 Hz/60 Hz ± 4%

Power Factor

>0.9 in Single Phase  >0.95 in Single Phase

THD

>4%

Topology Used                                                                         

IGBT Rectifier

OUTPUT

                          1Φ                                1Φ                              1Φ/3Φ                                    1Φ/3Φ

Voltage

                        230v                              230v                         230v/ 415v                           230v/ 415v

Tolerance/Regulation

Static Condition

± 1%

Dynamic Condition

± 4% For 100% Step Load

Frequency(Configurable)

50 Hz/60 Hz ± 0.1Hz

Power Factor

0.8Rated (0.6 to unity lagging)

Admissible Crest factor

4 ≈ 1

Waveform

Sinusoidal(Pure Sinewave)

THD

≤ 2%  for linear loads,≤ 4%  for non linear loads

Overload

150% for 1 Min., 125% for 10 Min.

Efficiency

>92%

Inverter Topology Control Section

Micro controller / DSP based

Inverter Topology Power Section

IGBT Based MPWM with instantaneous Waveform Correction

DC Charactereristics

Nominal Float Voltage

      48V/72V/96V/120V            120/144V/192/240V              240V/360V                      360V

Battery Type

SMF/TUBULAR

Protections

 

Rectifier

Input Circuit Breaker,Input Surge protection,High/low voltage protection,

 

Over temperature, Rectifier Output short circuit, over current protection

Battery 

Charger over voltage and over current limit, Battery over charge trip with latching

 

Battery deep discharge cut off,HRC Fuse protection

Invertor

O/P Over load, Short circuit, Over temperature,Over Voltage,Pulse Pulse current limit

Protections (Solar section)

Lightning,High voltage,Over current,Short circuit, Reverse polarity

 

Battery Over charging,over Temperature

Display Parameters (LCD)

Displays Input voltage,Output Voltage,Battery Voltage,Load Current,

 

Output Frequency. Status messages for Mains Failure,Low Battery,Over Load

 

Over voltage,Battery Low

Interface

RS232

 

Potential free contacts for Low battery(Optional)

Environment

 

Ambient Temperature

0⁰C to 50⁰C

Relative Humidity

5% to 95% condensed

Maximum Altitude

6660 ft / 2000m

Sound Level @ 1m

                                         <45dbA                                                                          <60dBA                                

Cooling

Forced Air

  • "We have been using Unipar 5KVA UPS for the last 5years. Their service rendered has been extremely good and has been always been prompt ontime. We would always recommend their service just for their sheer quality and service rendered."
    - Tarams Software Technologies Pvt Ltd