ZGX
Bidirectional AC/DC Source
Bidirectional AC/DC source and load up to 22.5 kVA with grid simulation, regenerative load, and PHIL support.
The ZGX series is a highly integrated bidirectional AC/DC power source and electronic load, designed for demanding grid simulation, power-hardware-in-the-loop (PHIL), inverter, OBC, and power electronics testing. A single unit delivers up to 22.5 kVA in only 4U, supporting AC, DC, and AC+DC operation with true 4-quadrant capability. Based on SiC technology and regenerative operation, the system offers high dynamic performance and energy recovery. Advanced features such as grid simulation, harmonic and inter-harmonic generation up to the 100th order, programmable waveforms, and low/high voltage ride-through enable realistic and highly flexible test scenarios. The ZGX series integrates regenerative AC/DC load functionality, RLC/RCD load simulation, and bipolar DC output modes, allowing the system to operate as both power source and load within complex test environments. This makes it ideal for EV onboard chargers, inverters, energy storage systems, and grid-connected power electronics. Power can be scaled via master-slave parallel operation with up to 10 units, making the platform suitable for both compact lab setups and high-power test systems. Typical applications include grid simulation, PHIL testing, EV charging systems, PV inverters, motor drives, energy storage validation, and automated power electronics testing.
Personal project consultation
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Select the appropriate technical configuration or access product documentation directly.
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Description
ZGX 5 Master Bidirectional AC/DC source and load, 5 kVA / 5 kW, AC 0–450 V L-N, DC 0–636 V, 0–30 A, 4U
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Current [A]
30
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Power [P]
5000
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Voltage [V]
450
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Technical Data
Product category
AC Bidirectional
AC Electronic Load
AC Power Supply
Type of AC Load
Regenerative Load
Type of AC source
Current-controlled CC
Source + Load
Grid simulator
Single-/Three-phase
|
Description
ZGX 15 Master Bidirectional AC/DC source and load, 15 kVA / 15 kW, AC 0–450 V L-N, DC 0–636 V, 0–90 A, 4U
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Current [A]
90
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Power [P]
15000
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Voltage [V]
450
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Technical Data
Product category
AC Bidirectional
AC Electronic Load
AC Power Supply
Type of AC Load
Regenerative Load
Type of AC source
Current-controlled CC
Source + Load
Grid simulator
Single-/Three-phase
|
Description
ZGX 15 Slave Bidirectional AC/DC source and load, 15 kVA / 15 kW, AC 0–450 V L-N, DC 0–636 V, 0–90 A, 4U
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Current [A]
90
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Power [P]
15000
|
Voltage [V]
450
|
Technical Data
Product category
AC Bidirectional
AC Electronic Load
AC Power Supply
Type of AC Load
Regenerative Load
Type of AC source
Current-controlled CC
Source + Load
Grid simulator
Single-/Three-phase
|
Description
ZGX 20 Master Bidirectional AC/DC source and load, 20 kVA / 20 kW, AC 0–450 V L-N, DC 0–636 V, 0–105 A, 4U
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Current [A]
105
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Power [P]
20000
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Voltage [V]
450
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Technical Data
Product category
AC Bidirectional
AC Electronic Load
AC Power Supply
Type of AC Load
Regenerative Load
Type of AC source
Current-controlled CC
Source + Load
Grid simulator
Single-/Three-phase
|
Description
ZGX 20 Slave Bidirectional AC/DC source and load, 20 kVA / 20 kW, AC 0–450 V L-N, DC 0–636 V, 0–105 A, 4U
|
Current [A]
105
|
Power [P]
20000
|
Voltage [V]
450
|
Technical Data
Product category
AC Bidirectional
AC Electronic Load
AC Power Supply
Type of AC Load
Regenerative Load
Type of AC source
Current-controlled CC
Source + Load
Grid simulator
Single-/Three-phase
|
Description
ZGX 22.5 Master Bidirectional AC/DC source and load, 22.5 kVA / 22.5 kW, AC 0–450 V L-N, DC 0–636 V, 0–105 A, 4U
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Current [A]
105
|
Power [P]
22500
|
Voltage [V]
450
|
Technical Data
Product category
AC Bidirectional
AC Electronic Load
AC Power Supply
Type of AC Load
Regenerative Load
Type of AC source
Current-controlled CC
Source + Load
Grid simulator
Single-/Three-phase
|
Description
ZGX-X Customized Customized bidirectional AC/DC source and load, project-specific configuration
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Technical Data
Product category
AC Bidirectional
AC Electronic Load
AC Power Supply
Type of AC Load
Regenerative Load
Type of AC source
Current-controlled CC
Source + Load
Grid simulator
Single-/Three-phase
|
Description
EXDA Accessory for ZGX series, analog programming interface for PHIL applications
|
Technical Data
Product category
AC Bidirectional
AC Electronic Load
AC Power Supply
Type of AC Load
Regenerative Load
Type of AC source
Current-controlled CC
Source + Load
Grid simulator
Single-/Three-phase
ZGX Series: Regenerative 4-Quadrant AC/DC Systems for Highly Efficient Grid Simulation and Load Testing
The ZGX series represents modern 4-quadrant AC/DC test technology in a compact 4U form factor for demanding industrial development and test bench applications. By using SiC PWM technology, the system combines high power density, precise control and excellent thermal efficiency in a very compact footprint.
As a bidirectional system, the series operates both as a precise source and as a regenerative sink. This makes the ZGX series ideal for grid simulation, AC/DC source operation, regenerative load testing and the precise reproduction of dynamic supply and disturbance scenarios in modern R&D test environments.
Key Advantages
Typical Applications
Simulation of grid disturbances and validation of grid compatibility for decentralized energy systems under reproducible conditions.
Evaluation of photovoltaic inverters including harmonic simulation, grid behavior and dynamic feed-in scenarios.
Testing of onboard chargers and bidirectional V2G solutions with realistic AC and DC operating scenarios.
Highly precise simulation and cycle testing of battery systems in bidirectional DC operation for research and validation.
Use as an RLC or RCD load for the digital simulation of complex impedances across a wide frequency range.
Function and System Description
Technical Key Data
| Parameter | Value |
|---|---|
| Power per module | 15 / 20 / 22.5 kW or 15 / 20 / 22.5 kVA |
| AC voltage range L-N | 450 V up to 70 Hz, 300 V for high-frequency tests up to 1000 Hz |
| DC voltage | up to 636 V |
| Frequency range | DC to 1000 Hz |
| Voltage accuracy | 0.1% FS |
| AC power accuracy | 0.2% FS |
| Frequency accuracy | 0.01% FS + 0.01 Hz |
| Output THD | < 0.5% at standard frequencies |
| Small-signal bandwidth | 10 kHz |
| Grid-side quality | Power factor > 0.99, THDi < 1% |
| Form factor | 4U, 440 mm × 670 mm × 178 mm, fan cooling |
Variants and Scalability
Compact version for precise AC/DC test applications with high efficiency and bidirectional operation.
Ideal balance of power reserve, rack density and energy efficiency for industrial development environments.
Maximum module power for demanding grid simulation and load applications with high dynamic performance.
Additional slave modules efficiently expand total power and support the flexible scaling of existing systems.
Single-mode fiber provides high EMI immunity against high-frequency switching disturbances in industrial environments.
The integrated fault-locating function reduces MTTR and accelerates service and diagnostic processes in complex system configurations.
Integration and Automation
Strategic Value
The ZGX series combines high dynamic performance, low distortion and regenerative energy feedback in a compact platform for modern industrial test benches. This reduces operating costs, thermal load and infrastructure requirements while improving testing quality.
With SiC technology, excellent grid quality and flexible master-slave scalability, the system provides a future-proof solution for grid simulation, AC/DC load testing and complex development tasks in research, validation and production.
Consulting and Contact
Not sure whether this product is the right fit for your application? We are happy to support you in selecting the right solution for your requirements – from a standalone application to complete system integration.
Contact us easily via live chat, contact form, email or phone – we will advise you personally and with practical application focus.
Depending on availability, we can also provide a free demo unit for evaluation in your test environment so that you can test the system directly under real conditions.
- Download Datasheet - Bidirectional AC Source and Load ZGX
- Download EXDA Analog and Digital IO Extension Box
- Download Manual - Bidirectional AC Source and Load ZGX 15
- Download Manual - Bidirectional AC Source and Load ZGX 20
- Download Manual - Bidirectional AC Source and Load ZGX 22.5
- Download ZGX User Manual - Remote Software (EN) V1.2
