Analog converter DC-4 HV

voltage/currentpowerfor automatic controls

Overview
DC-4 from AEG Power Solutions fulfils stringent industrial DC power requirements by combining high efficiency, controlled DC output and a sinusoidal AC input current waveform. The system is designed for demanding processes such as electrolyzers and other high-voltage industrial applications. Power factor exceeds 0.99 and input current distortion is minimised to meet grid codes.

Details
The DC-4 is based on a proven IGBT rectifier using the VIENNA topology to allow fully controlled DC voltage output and zero reactive power demand. The wide output voltage range enables load voltages up to 1500 Vdc. Each module supplies up to 1600 A and multiple modules (up to 8) can be interconnected to build multi-MW power blocks.

Highlights

• Type: Rectifier (AFE IGBT)
• Power output: 0–2.355 MW
• Maximum per unit: up to 1500 Vdc | 1600 A | 2.4 MW
• Input voltage (reported): 0.23–35 kV (typical spec: 0.4–35 kV)
• Phases: 3-phase

Benefits

• Reliable high-voltage DC supply (up to 1500 Vdc) with high efficiency
• Fast dynamic response for varying process demands
• Lower total cost of ownership through high efficiency and modularity
• VIENNA topology supports cold start (full current control from 0 Vdc)
• Improved electrolyzer lifetime due to high-quality DC supply and integrated polarization rectifier
• High power density reduces footprint and installation cost
• Integrated safety circuit up to SIL2 (EN 61508) for safe shutdown
• Operable as current or voltage source depending on project requirements
• Grid-compliant operation without need for costly harmonic filters, reducing CAPEX and OPEX

Features

• Low current ripple (e.g. <3 %)
• Peak efficiency >99 %
• Power factor >0.99
• Low THDi: <3 % for MW systems
• Project-specific parameter optimisation available
• Modular design with independent modules and n+x redundancy

Input Specifications (summary)

• Input voltage: 0.4–35 kV (also reported as 0.23–35 kV)
• Transformer: customized per project
• Power factor: >0.99
• THDi: <3 % at rated operation (compliant with IEC61000, IEEE519, VDE-AR-N 4110)

Output Specifications (summary)

• Minimum load voltage: 650 Vdc
• Maximum load per single unit: up to 1500 Vdc | 1600 A | 2.4 MW
• Current ripple: <3 %
• Peak efficiency: >99 %

Options

• Cabinet heating for outdoor installations
• Earth-fault monitoring
• PROFINET communication
• Analog setpoint and analog output
• Magnetic valve
• Touch display

Technical specifications

• Topology: VIENNA IGBT rectifier for fully controlled DC output and zero reactive power demand
• Power output range: 0–2.355 MW
• Maximum per-module output current: 1600 A
• Maximum achievable load voltage: up to 1500 Vdc
• Minimum load voltage: 650 Vdc
• Input voltage range (reported): 0.23–35 kV; typical spec: 0.4–35 kV
• Phases: 3-phase
• Power factor: >0.99
• THDi: <3 % for MW systems (compliant with IEC61000, IEEE519, VDE-AR-N 4110)
• Current ripple: <3 %
• Peak efficiency: >99 %
• Modularity: up to 8 units interconnected; independent module operation; n+x redundancy
• Integrated safety circuit up to SIL2 (EN 61508)
• Integrated polarization rectifier to protect electrolyzer cells
• Robust, compact design for harsh environments
• Transformer: customized per project