G5.RSS Regenerative DC Power Supply
The G5.RSS Series is a high-performance regenerative DC power supply designed for demanding industrial and laboratory test applications. Its bidirectional source/sink operation enables both power sourcing and energy absorption within a single system. With fast transient response,
high control accuracy, and scalable configurations from single units up to multi-megawatt installations, the G5.RSS platform is ideally suited for converter testing, P-HIL applications, fuel cell testing, and advanced power electronics validation.
Regenerative DC Power Supply for Industrial Test Applications
- Main function: Bidirectional source and sink operation with regenerative energy recovery for dynamic DC test applications
- Technology: High-performance 2-quadrant regenerative DC power supply with fast transient response and high control accuracy
- Power focus: Scalable regenerative standard DC power supply systems from 54 kW to 324 kW for industrial and laboratory environments
- Scalability: Modular single-unit and multi-unit configurations supporting systems up to MW-level installations
- Applications: Inverter testing, P-HIL applications, fuel cell testing, smart grid applications, and advanced power electronics validation
- Integration: Flexible interfaces, programmable control functions and optional cabinet or liquid-cooled system solutions
High Power Regenerative DC Power Supplies from 9 kW to 5000+ kW
The G5.RSS Series is engineered for high-power regenerative DC power supply applications requiring precise source and sink operation, fast dynamics, and scalable system architectures. Typical system configurations range from 54 kW to 324 kW and are widely used for inverter testing, converter validation, EIS applications, and advanced power electronics testing environments.
- Scalable modular architecture for flexible power expansion
- Parallel, series, and mixed operation for customized voltage and current ranges
- Configurable regenerative DC power supply systems for industrial laboratory and automated test environments
- Expandable from compact single-unit systems to large multi-cabinet installations
High Dynamic Source and Sink Operation
- Fast transient response for highly dynamic test scenarios
- High-precision voltage and current regulation across the full operating range
- Bidirectional source and sink capability within a single regenerative power system
- Optimized for rapidly changing DUT behavior in converter and inverter applications
The G5.RSS regenerative DC power supply is designed for demanding industrial applications where dynamic load changes, fast control response, and stable operation are critical.
Regenerative Energy Recovery and Efficient Operation
- Reduced heat dissipation compared to conventional resistive load solutions
- Energy fed back into the grid during sink operation
- Lower operating costs and reduced cooling requirements
- Improved efficiency for long-duration and high-power testing applications
Regenerative operation significantly improves overall system efficiency and reduces infrastructure requirements in high-power laboratory and industrial environments.
Applications for Regenerative DC Power Supplies
The G5.RSS regenerative DC power supply is designed for demanding industrial and research applications requiring bidirectional source/sink operation, high dynamics, and scalable high-power system architectures. Its fast control response, high regulation accuracy, and regenerative capability make the system suitable for a wide range of advanced power electronics and energy system test environments.
Power-Hardware-in-the-Loop (P-HIL)
The G5.RSS Series is ideally suited for Power-Hardware-in-the-Loop (P-HIL) applications requiring fast dynamic response and stable real-time operation. Bidirectional source and sink capability enables realistic simulation of dynamic energy flows and rapidly changing load conditions. The high control bandwidth and regenerative operation support highly dynamic DUT behavior commonly found in advanced inverter, converter, and grid simulation environments.
- High dynamic source and sink operation
- Fast transient response for real-time simulation environments
- Suitable for highly dynamic DUT behavior
- Scalable regenerative power systems for advanced laboratory environments
Inverter and Power Electronics Testing
G5.RSS regenerative DC power supplies are widely used for inverter testing, converter validation, and advanced power electronics development. The power supply supports dynamic source and sink operation under varying load conditions and enables realistic testing scenarios for industrial, automotive, and energy applications. High-precision voltage and current regulation ensure stable and repeatable test conditions for chargers, DC/DC converters, traction inverters, and other power conversion systems.
- Testing of inverters, converters, chargers, and DC/DC converters
- Bidirectional source and sink capability
- Stable operation during dynamic load changes
- Suitable for industrial and automotive validation environments
Fuel Cell, EIS, and Smart Grid Applications
The flexible G5.RSS architecture also supports specialized energy and grid-related applications such as fuel cell testing, electrochemical impedance spectroscopy (EIS), and smart grid simulation. High regulation accuracy, programmable control functions, and regenerative operation enable stable testing and simulation of modern energy systems under dynamic operating conditions. The scalable G5.RSS supports both laboratory-scale development and large industrial validation environments.
- Electrochemical impedance spectroscopy (EIS)
- Fuel cell testing and simulation environments
- Smart grid and energy system applications
- High-precision current and voltage regulation
Scalable Regenerative DC Power Supply Architecture
The modular G5.RSS Series enables scalable regenerative DC power supply systems ranging from compact laboratory setups to large industrial multi-cabinet installations. Individual units can operate as standalone systems or be combined through parallel, series, or mixed operation to achieve application-specific voltage, current, and power requirements. This flexible architecture supports regenerative DC power supply configurations from 9 kW to 324 kW and beyond, including MW-level installations for demanding industrial and research environments.
The scalable system concept simplifies future expansion and allows flexible adaptation to changing testing requirements. Optional cabinet solutions, liquid cooling and centralized control functions further support integration into advanced laboratory and industrial infrastructures.
- Standalone and multi-unit regenerative DC power supply systems
- Parallel, series and mixed operation
- Scalable from 9 kW systems to MW-level installations
- Optional cabinet and liquid-cooled system solutions
Technology, Control, and System Integration
High Dynamic Regenerative DC Power Supply Technology
The G5.RSS Series combines fast transient response, high control accuracy, and stable operation for demanding industrial and laboratory applications.
- Fast transient response for dynamic testing applications
- High-precision voltage and current regulation
- CV, CC, CP, CR, and Ri/Gi simulation modes
- Stable operation with switchable output capacitance
Programmable Control and Automation Interfaces
Integrated control and communication functions simplify operation and automated test system integration.
- G5.Control software for configuration and diagnostics
- .NET API, REST API, Ethernet, USB, and digital I/O integration
- 8-channel digital scope for monitoring and analysis
- Flexible integration into automated test systems with EtherCAT, CANmp, SCPI, and RegaLink RT (Aurora)
Efficient and Safe High-Power System Integration
G5.RSS Series supports safe and efficient operation in demanding high-power environments.
- Integrated protection and monitoring functions
- Optional liquid-cooled and cabinet-based system solutions
- Reduced heat dissipation through regenerative operation
- Efficient integration into laboratory and industrial infrastructures
G5.RSS Regenerative DC Power Supply Configurations
The G5.RSS Series is available in a wide range of voltage, current, and power configurations for industrial and laboratory applications. The following overview shows typical single-unit regenerative DC power supply systems from 9 kW up to 54 kW with output voltages up to 1500 VDC. Multiple units can be combined through parallel, series, and mixed operation to create scalable regenerative DC power supply systems from 9 kW to 5000+ kW.| Single-Unit 9 - 18 kW | 4 U | Voltage [V] | Power [kW] | Current [A] | Order Code |
|---|---|---|---|---|
 |
*0…80 | 9 | -338…338 | G5.RSS.9.80.338 |
| *0…80 | 18 | -676…676 | G5.RSS.18.80.676 | |
| 0…160 | 18 | -338…338 | G5.RSS.18.160.338 | |
| 0…500 | 9 | -54…54 | G5.RSS.9.500.54 | |
| 0…500 | 18 | -108…108 | G5.RSS.18.500.108 | |
| 0…1000 | 18 | -54…54 | G5.RSS.18.1000.54 |
| Single-Unit 27 - 36 kW | 7 U | Voltage [V] | Power [kW] | Current [A] | Order Code |
|---|---|---|---|---|
 |
*0…80 | 27 | -1014…1014 | G5.RSS.27.80.1014 |
| *0…80 | 36 | -1352…1352 | G5.RSS.36.80.1352 | |
| 0…160 | 36 | -676…676 | G5.RSS.36.160.676 | |
| 0…240 | 27 | -338…338 | G5.RSS.27.240.338 | |
| 0…320 | 36 | -338…338 | G5.RSS.36.320.338 | |
| 0…500 | 27 | -162…162 | G5.RSS.27.500.162 | |
| 0…500 | 36 | -216…216 | G5.RSS.36.500.216 | |
| 0…1000 | 36 | -108…108 | G5.RSS.36.1000.108 | |
| 0…1500 | 27 | -54…54 | G5.RSS.27.1500.54 |
| Single-Unit 45 - 54 kW | 10 U | Voltage [V] | Power [W] | Current [A] | Order Code |
|---|---|---|---|---|
 |
*0…80 | 45 | -1690…1690 | G5.RSS.45.80.1690 |
| *0…80 | 54 | -2028…2028 | G5.RSS.54.80.2028 | |
| 0…160 | 54 | -1014…1014 | G5.RSS.54.160.1014 | |
| 0…240 | 54 | -676…676 | G5.RSS.54.240.676 | |
| 0…500 | 45 | -270…270 | G5.RSS.45.500.270 | |
| 0…500 | 54 | -324…324 | G5.RSS.54.500.324 | |
| 0…1000 | 54 | -162…162 | G5.RSS.54.1000.162 | |
| 0…1500 | 54 | -108…108 | G5.RSS.54.1500.108 |
order code example: G5.RSS.9.60.338
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FAQ: Regenerative DC Power Supply
A regenerative DC power supply can both source power to a device under test (DUT) and absorb energy fed back from the DUT during operation. Instead of converting absorbed energy into heat, the system regenerates the energy back to the electrical grid, improving overall efficiency and reducing cooling requirements in high-power testing applications.
What is the difference between a regenerative DC power supply and a bidirectional DC power supply?
A bidirectional DC power supply supports both source and sink operation, meaning it can supply and absorb power. A regenerative DC power supply additionally feeds absorbed energy back into the grid instead of dissipating it as heat. In many industrial applications, both terms are closely related and often used together.
During source operation, the DC power supply delivers energy to the DUT. During sink operation, the system absorbs energy returned from the DUT, for example, during braking, discharge, or dynamic load changes. This bidirectional operation is important for inverter testing, converter validation, ESS applications, and other regenerative test environments.
Yes. Multiple G5.RSS units can be combined through parallel, series or mixed operation to create scalable regenerative DC power supply systems from 9 kW to 5000+ kW. The modular architecture also supports significantly larger multi-cabinet and MW-level installations.
Yes. The G5.RSS power supply is designed for demanding power electronics applications, including inverter testing, converter validation, charger testing, and DC/DC converter testing. Fast transient response, high control accuracy, and bidirectional source/sink capability support stable operation under dynamic load conditions.
Yes. G5.RSS power supplies support parallel, series, and mixed operation for flexible voltage, current, and power configurations. This enables scalable regenerative DC power supply architectures ranging from compact laboratory systems to large industrial multi-cabinet installations.