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G5.UNV All-in-One DC Power Supply

The G5.UNV series is bidirectional regenerative and can operate in CV, CC, CP, CR, or CR control modes with simulation of internal resistance in CV or internal conductance in CC mode. It is universally applicable and therefore suitable for all industrial and scientific applications in laboratories and on test benches. The modular and finely graded G5.UNV series is characterized by highly dynamic response times, adjustable filter time

constants, and a wide current-voltage range with an auto-ranging factor 3. The G5.UNV devices are equipped with hard- and software modules for the simulation and testing of energy storage devices, solar arrays, and fuel cells. This gives the engineer a power supply that easily covers a wide range of applications.

Key Facts

REGATRON G5 family programmable DC power supplies – advanced power solutions

Technology

  • Technologically advanced, fast switching, compact 19-inch power supplies
  • High control dynamics in the 100…200 μs range – even at higher power levels up to 5000+ kW
  • Exceptional accuracy with additional high-resolution current measurement range
  • Wide current-voltage range with an autoranging factor 3
  • CV, CC, CP, CR, and Ri/Gi-Sim control modes
  • Regenerative and highly efficient, resulting in a significant reduction of energy consumption and heat dissipation
Programmable power supplies – REGATRON solutions for reliable power management

System Capability

  • Modular and easily scalable systems
  • Parallel, series, and mixed operation with a digital high-speed bus
  • Simple multi-unit configuration with the operating software
  • Easy rack mounting
  • Liquid cooled systems in IP54 available
  • Optional safety features such as 2-channel safety interface and insulation monitoring
  • Turn-key cabinet solutions or project-specific system integration according to customer specification
G5.Control software option – advanced control for REGATRON programmable power supplies

System Control

  • Operating software, extended analysis, parameterization options, and calibration
  • Application software with visualization, programming, and data logger
  • Powerful application programming interfaces (APIs)

Applications and Features

The G5.UNV series is the fully equipped all-rounder! It contains all necessary functions and software modules for the simulation of energy storage devices and solar arrays as well as for the testing and evaluation of batteries and fuel cells.

Various features such as switchable filter time constants and adjustable controller settings as well as the integrated powerful 8-channel digital scope assist the user in quickly and easily achieving optimal system behavior for a special application requirement.

Simplified and safe operation can be provided by pre-programmed overvoltage protection and digital fuses with immediate and I2t triggering. Different protection levels for different DUTs can be either programmed by the user’s automation test system via various interfaces or activated manually by digital input signals or even more conveniently wired to different switch positions.

The G5.UNV series also offers the possibility to store, edit, and recall any device configuration on board the power supply.

Parameterization example of a 36 kW, 1000 V, 108 A device: Set-value step current -97…97 A@333VDC in <50 μs with overshoot (top), in <200 μs w/o overshoot (bottom). This dynamic behavior is characteristic for all G5 devices.

G5.UNV Series as P-HIL Power Amplifier

Power-hardware-in-the-loop (P-HIL) simulation integrates physical hardware and software models in a closed-loop, offering versatile opportunities to investigate the behavior of complex systems at different parameter settings.
A typical P-HIL setup includes a fast real-time computer driving a power amplifier. The G5.UNV series is best suited for this purpose due to its high dynamics and a fast analog port. Time analog-in to power output is typically 90 μs.

Modular and Easily Scalable Systems

The output of an individual power supply is in the range from 0…9 kW to 0…5000+ kW, up to 3000 VDC. The advantageous modularity of REGATRON power supply solutions allows the system to be easily adapted to ever-changing test requirements. It is possible to reconfigure between parallel, series, and mixed operation. Moreover, the system can be expanded with additional power supply units or may be split into smaller units.
Whether for single devices or powerful multi-device systems, REGATRON also offers turn-key cabinet solutions or project-specific system integration according to customer specifications.
Therefore, the purchase of a REGATRON power supply is a solid investment for the future.

Bidirectional DC power supply G5 modular system – REGATRON scalable programmable power supplies
Modular concept for easy power and voltage increase by parallel, series, and mixed operation. The parallel configuration allows even the operation of devices with different output power, e.g., 18, 36, and 54 kW modules, in one system.

Characteristics and Features in the Basic Scope of the G5.UNV Series

CV constant voltage
CC constant current
CP constant power
CR constant resistance
Ri internal resistance simulation in CV
Gi internal conductance simulation in CC

G5.Control allows complete and easy control of the power supply unit or entire master slave system and also offers a whole range of service functions. In addition to basic control, configuration and update functions, G5.Control has a powerful integrated 8-channel digital scope . The high-resolution real-time display of numerous internal system signals allows the engineer to optimize the overall system in a targeted manner. Different application specific settings of parameters for single devices or master slave systems can be saved on the devices and either recalled by G5.Control, an API or CAN message or digital I/O signals. Firmware updates can be carried out quickly and easily for individual units as well as for master slave systems with a single command. When handling support cases concerning the application of the power supplies, the built-in diagnostic functions help to quickly identify the problem.

.NET programming, e.g., by LabView, Python, Matlab

Interface via the optional HMI or RCU

The TFE time-based function generator allows programming either through G5.Control operating software, HMI touch display, or various interfaces.

  • Time-dependent functions U = f(t), I = f(t),
    P = f(t): sine, triangle, or square as well as user-
    defined data points. Import and export through
    CSV files supported
  • Ramp function for amplitude and offset changes
  • Small signal modulation up to 10 kHz

Sweep functionality for TFE
As an add-on to the TFE time-based function generator, the sweep mode allows for continuous or stepwise sweeping of the amplitude and the frequency of a programmed function. Both the amplitude and the frequency may be swept linearly or exponentially. This sweep function together with the high modulation bandwidth of 10 kHz makes devices well suited to electrochemical impedance spectroscopy (EIS) of batteries, fuel cells, and electrolyzers.

G5 Time Base function – timing option for REGATRON programmable power supplies

As a PV simulator the G5.UNV series features especially low capacitance values in the output filter stage, switchable earth leakage resistors, and the versatile application software SASControl. The powerful platform for R+D and testing of PV inverters fully complies with the efficiency measurement procedures for maximum power point tracking (MPPT) in inverters as described in EN 50530. The core of the application software SASControl is a versatile script programming system that allows the easy implementation of individual programming sequences. Report generation of measured data is included.

G5.SAS software interface – system automation software for REGATRON programmable power supplies
SASControl Live View – always up to date

As a battery simulator the G5.UNV series realistically and dynamically simulate both the electrochemical and electrical properties of a battery type in charge and discharge mode. Other features include high data resolution and options for meeting high safety standards for operators. The real-time computing process of the application software BatSim perfectly matches the internal timing of the DC power supply. Therefore, an optimum computing rate is achieved leading to very short response times even in cases of steep changes in charge/discharge currents. Each battery type reacts in a specific manner to charge and discharge currents in terms of state of charge, cell voltage, ohmic and parametric losses, and polarization effects. These dependencies are considered by specific mathematical models used in the REGATRON BatSim software/firmware. The operator can fine-tune the model with several well-defined parameters to adjust the simulation to a user’s requirement.

G5.BAS software interface – battery analysis and simulation tool for REGATRON power supplies
BATSim configuration – a few clicks away from the required battery simulation.

As a battery tester the G5.UNV series has an exceptional electrical performance that offers several advantages for battery testing applications:

  • Voltage accuracy of <0.01…0.02% FS
  • Current accuracy in the range 0.03…0.09% FS depending on model
  • Additional high-resolution current measurement range from -10 to 10% FS with an accuracy of <0.005% FS
  • Current rise time in the 50…200 μs range
  • Parameterizable to avoid overshoot
  • Current ripple modulation up to 10 kHz

In addition, the G5.UNV provides important features for user safety, power supply, and battery protection. It avoids:

  • Reverse-polarity problems
  • Arcing and high inrush current when connecting the battery to the DC terminals even at unmatched voltage levels
  • Deep battery discharge at voltage off state (DC port impedance >10 MΩ)

The application software BatControl allows selecting and running so-called BatScripts. These scripts automate the manually given commands to the G5 Battery Tester and allow the running of these commands according to defined schedules.

  • Define charge and discharge algorithms
  • Run drive cycles (according to own or already defined standards)
  • Repeat previously recorded discharge/charge data

For use as a fuel cell simulator the G5.UNV series utilizes the integrated AAP function. The AAP application area programming feature allows to set the DC output voltage or current or power as a function of any of the input values IDC, UDC, or PDC. The functional relationship is given by a user-defined curve whose values are managed by CSV import/export. In this way, a wide variety of nonlinear electrical two-pole networks can be defined, e.g., photovoltaic arrays or fuel cell curves. The figure shows the typical fuel cell characteristics with a voltage/current dependence. Embedded calculation on board the G5.UNV assures real-time simulation.

G5 AAP fuel cell test system diagram – REGATRON programmable power supplies in fuel cell applications
AAP curve with fuel cell characteristic U = f(I).

The I/O interface features analog and digital signals used for set and actual values or operating states. Integrated into the user’s control system it is possible to set dynamically changing limits, to use enable signals, or trigger in or outputs. The possibility to activate up to 4 user defined parameter sets using digital inputs means that the system can be adapted to different EUTs. For example, predefined digital fuses and voltage limits can be set.

The wide band AC input accepts all common AC grid systems and has an active power factor correction.

  • AC Grid 380…480 VAC ±10% at 50/60 Hz
  • PF 0.99
  • Efficiency 94…95%, depending on model

Device Types

Single-Unit 9 - 18 kW | 4 U Voltage [V] Power [kW] Current [A] Order Code
programmable dc power supply 18kw *0…80 9 -338…338 G5.UNV.9.80.338
*0…80 18 -676…676 G5.UNV.18.80.676
0…160 18 -338…338 G5.UNV.18.160.338
0…500 9 -54…54 G5.UNV.9.500.54
0…500 18 -108…108 G5.UNV.18.500.108
0…1000 18 -54…54 G5.UNV.18.1000.54
Single-Unit 27 - 36 kW | 7 U Voltage [V] Power [kW] Current [A] Order Code
programmable dc power supply 36kw *0…80 27 -1014…1014 G5.UNV.27.80.1014
*0…80 36 -1352…1352 G5.UNV.36.80.1352
0…160 36 -676…676 G5.UNV.36.160.676
0…240 27 -338…338 G5.UNV.27.240.338
0…320 36 -338…338 G5.UNV.36.320.338
0…500 27 -162…162 G5.UNV.27.500.162
0…500 36 -216…216 G5.UNV.36.500.216
0…1000 36 -108…108 G5.UNV.36.1000.108
0…1500 27 -54…54 G5.UNV.27.1500.54
Single-Unit 45 - 54 kW | 10 U Voltage [V] Power [W] Current [A] Order Code
programmable dc power supply 54kw *0…80 45 -1690…1690 G5.UNV.45.80.1690
*0…80 54 -2028…2028 G5.UNV.54.80.2028
0…160 54 -1014…1014 G5.UNV.54.160.1014
0…240 54 -676…676 G5.UNV.54.240.676
0…500 45 -270…270 G5.UNV.45.500.270
0…500 54 -324…324 G5.UNV.54.500.324
0…1000 54 -162…162 G5.UNV.54.1000.162
0…1500 54 -108…108 G5.UNV.54.1500.108
Discover Power- | Voltage- | Current-Configurations 9 to 5000+ kW
*also as 60 V SELV version for single or parallel operation available,
order code example: G5.UNV.9.60.338
Contact REGATRON – discover programmable power supplies and global support services

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