Single Phase Inverters

  Click here to download specifications on the Single Phase Inverter (PDF Format)

Sunverters® for Photovoltaic Applications

Cogenerates power into utility lines for Residential, Industrial, Government and Utility Installations.

These inverters have a  power range from 5 kW for  residential use to 150 kW for commercial centers.  The unit converts the wide range of DC voltages from a photovoltaic array to a precise AC voltage and applies the power to the utility line.  No storage device, such as a battery, is needed.  If more power is produced than is being consumed locally, the power is then supplied to the utility grid.

This product family is also available for

stand-alone applications.

Click  to download specifications on the Sunverter (PDF Format)

Advanced Features

 - Max power tracking to optimize use of solar energy

 - Fast response through sample data control system

 - Microprocessor / ASIC controlled

 - High Accuracy

 - No Adjustments Necessary

 - Minimum parts count

 - IGBT power stage

Turn-on Characteristics:
Bumpless turn-on at zero voltage crossover

Speed Of Response:
400 microseconds

Max Power Tracking:
1% Accuracy above 300W

Current Ripple to Array:
3% RMS at 120Hz

Current to utility THD:
5% of full load current

EMI Protection:
RFI Filter on input and output

Humidity:
90% non-condensing

Ambient Temperature:
 0 to 40 Degrees C

Tare Power:
See table below

Power Factor to Utility
.99 Minimum

Efficiency:
92% Typical

Input:
Any practical array voltage available. 

Shutdown Protection:
Loss of utility, Utility Voltage High, Utility Voltage low Loss of Phase loch, Array Voltage high, Array Voltage low, Utility Current High, Utility Current Reversed,
High Temperature

Utility Voltage:

Single Phase: 240 VAC. +8%, -12%
Three Phase: 277/480 +8%, -12%

Trimode Model #

Power Level in Watts

# of Phases

Freq.

Nominal input voltage

Minimum input voltage

Maximum input voltage

Cold start voltage

Tare Power

753-3-200

5,000

1

50

200

160

240

300

106

753-3-RS-200

5,000

1

50

200

160

240

300

106

753-4-200

5,000

1

60

200

160

240

300

106

753-4-RS-200

5,000

1

60

200

160

240

300

106

714-3-200

10,000

1

50

200

160

240

300

250

714-4-200

10,000

1

60

200

160

240

300

250

7173-3-200

17,000

1

50

200

160

240

300

420

7173-4-200

17,000

1

60

200

160

240

300

420

739-3-200

30,000

3

50

200

160

240

300

750

739-4-200

30,000

3

60

200

160

240

300

750

754-3-384

50,000

1

50

384

336

442

575

1060

754-4-384

50,000

1

60

384

336

442

575

1060

759-3-200

50,000

3

50

200

160

240

300

1260

759-4-200

50,000

3

60

200

160

240

300

1260

7159-3-384

150,000

3

50

384

300

460

575

2400

7159-4-384

150,000

3

60

384

300

460

575

2400

Hybrid Applications

The TRIMODE power processor product line includes a DC-DC Max Power Tracker (MPT) which can be ordered  separately; a Power Processing controller (PPC) for a hybrid system that includes an industrial size battery, an inverter / sine wave battery charger, a diesel engine generator, and a Ground Fault Detector System.

The MPT converts power from a photovoltaic array to a battery hybrid power center.  Its function is to operate the photovoltaic array at its maximum power point whenever the battery can take the power, and to operate as a constant  voltage DC power supply at the battery float voltage whenever the battery is fully charged. At the float voltage point, power may or may not be delivered to the 480 VAC grid depending on whether the TRIMODE power processor is in the inverter mode or not. 

The PPC optimizes the use of photovoltaic energy and minimizes the consumption of diesel fuel by managing when the diesel engine generator will supply the AC grid and when the inverter will supply  the AC grid.

Large scale integration and the speed of response of sampled-date controller's lead to low parts count and increased reliability.  In the Abacus Controls system design there is always isolation between the DC source circuit and the AC output.  Therefore, the requirement for a ground fault detector is limited to safety issues on the DC source. The ground Fault detector senses a ground in a photovoltaic array by measuring the current to ground through the normal array-grounding resistor.  If the current exceeds a predetermined  level, the array is short-circuited and the fault annunciated.

  Click  to here download specifications on the Trimode Power Processor Product Line (PDF Format)

System Description

The  TRIMODE Power Processor optimizes power flow in hybrid generator systems that have photovoltaic arrays, batteries and a diesel generator.  It operates in three modes -   

First, it may operate as an inverter providing power from the batteries to the load with the diesel generator turned off.  Second, it may operate as a battery charger delivering power from the diesel generator.  Third, it operates in parallel with the diesel generator to provide a bumpless transfer and to augment the total power available. 

The Power Processing Center (PPC) - The 480 VAC three-phase grid can be serviced either from the diesel engine generator or the three-phase TRIMODE power Processor.

The Alternate energy source is the photovoltaic array.  At the output of the array is a rectifier, whose function is to block reverse power flow into the array from the battery - a vital protection for array.

Interfacing between the array and the battery is an optional DC-DC Max Power Tracker (MPT).   Considering the rated power of the system components and the broad range of the operating voltage for both the photovoltaic array and the battery; the economics of the system cost easily justify the added purchase cost of the MPT.  An added advantage of including the MPT in the system is that the on-off controller for the battery is no longer needed.

 The Power Processor Controller (PPC) keeps record on the status of the array, the battery, and the diesel engine generator and delivers start / stop commands to the diesel; Whenever the diesel is  supplied power through the SS Relay, the TRIMODE automatically goes into the charger mode.

The most desirable mode of operation is with the array supplying power via the