Built with switch-mode IGBT topology, digital micro-controllers, and dual Constant-Current/Constant-Voltage regulation to handle heavy industrial duty cycles in maritime, testing, and surface treatments.
Analyzing electrical load profiles, subsea marine electronics marinization, and harsh Nordic environmental parameters.
The city of Drammen, situated along the dramatic Drammenselva and connected through the Drammensfjord to the Oslofjord, represents Norway’s pivotal logistics gateway and an aggressive automotive/maritime hub. With Drammen Havn (Port of Drammen) handling heavy car imports, multimodal rail logistics, and regional offshore support operations, electrical conversion systems face severe challenges: high atmospheric humidity, fluctuating saltwater salinity, and rapid winter temperature cycling down to −25°C.
In high-power industrial shore-to-ship DC distribution and maritime galvanic protection, standard silicone-controlled rectifiers (SCR) suffer from low power factor (often below 0.85) and huge harmonic distortion (THD > 30%), causing severe back-EMF perturbations into the local Drammen regional grid (managed under Glitre Nett standards). Fenvix high-voltage switch-mode rectifiers utilize third-generation IGBT modules switching at high carrier frequencies (up to 20kHz). This architecture shrinks reactive passive magnetic components by over 60%, raises power factor above 0.94 without bulky external correction filters, and delivers clean DC ripple (≤ 0.5% RMS), making them ideal for delicate marine electronics test arrays and port battery energy storage charging.
The Kongsberg-Drammen industrial technology corridor represents Europe’s leading cluster for subsea oil and gas, umbilical tether cabling, and deep-water autonomous oceanographic survey vehicles (AUVs). These applications demand high-voltage insulation dielectric testing, capacitive cable pulse discharge simulations, and stable constant-current drivers operating upwards of 1,000V to 100kV DC.
When charging large capacitive loads such as high-voltage subsea umbilical cables, conventional unmanaged rectifiers induce destructive inrush currents that damage solid-state diodes. Fenvix capacitor-charging DC supplies deploy algorithmic resonant soft-switching combined with dynamic current clamping. Our programmable DSP controller provides precise Joule-per-second charging ramps, instantaneous arc-quenching within 5 microseconds, and full galvanic isolation between input mains and the high-voltage test output, completely protecting lab personnel and downstream telemetry systems across Buskerud testing chambers.
Precision hard-chrome, nickel, and titanium anodizing rectifiers with stepless current adjustment, custom soft-start ramps, and automated cycle timing for high-stress subsea hydraulic rods.
Microcontroller-governed auto polarity-reversing DC power supplies designed to clean marine electrolysis plates without chemical acids, directly preventing calcium scaling on titanium electrodes.
High-voltage (up to 3200V) laboratory grade DC sources engineered for EV battery pack development, subsea power converters, and high-voltage motor dyno stress testing benches.
Strategic alignment with Norway's national green shift, Zero-Emission Port mandates, and offshore renewable expansion.
Norway maintains one of the world's most aggressive decarbonization and renewable grid commitments. In the Drammen and greater Viken county manufacturing corridor, three macroscopic engineering shifts are actively transforming industrial procurement of high-voltage rectifiers:
1. Strict Maritime Electrification Mandates (Grønn Havn Drammen): Norway's maritime regulations increasingly require vessels berthed in Drammen to shut down auxiliary diesel generators and transition to shore connection power. Supplying fast shore charging systems and high-voltage DC distribution to electric ferry prototypes demands robust rectifiers with low thermal footprint, high IP-rated corrosion shielding, and active power factor compensation that meets ENOVA grant specifications.
2. Hydrogen Electrolysis & Green Chemical Scaling: As regional industrial clusters invest in clean hydrogen generation along transport corridors, power supply units must support round-the-clock water electrolysis. This requires continuous 15,000A+ current delivery at tightly managed voltages (12V–64V DC) with closed-loop liquid cooling to prevent cabinet condensation when humid marine air meets sub-zero ambient Scandinavian winter temperatures.
3. Heavy Aluminum & Alloy Surface Treatment Evolution: Drammen's machinery equipment builders are shifting away from toxic hexavalent chromium towards hard-coat sulfuric and titanium anodizing. These specialized coatings demand sophisticated programmable DC ramp-up curves and micro-pulsing to prevent micro-cracking in subsea offshore components. Fenvix provides direct programmable control through digital interfaces including RS485 Modbus, Profibus, and analog 0-10V/4-20mA integration into existing SCADA infrastructure.
| Industrial Application in Drammen | Operating Voltage / Current | Recommended Topology | Cooling Mechanism | SCADA / Communication |
|---|---|---|---|---|
| Marine Hardware Galvanizing & Chrome | 12V – 24V DC / 3,000A – 15,000A | IGBT Switch-Mode (CC/CV) | Closed-Loop Deionized Water | RS485 / Modbus RTU / 4-20mA |
| Subsea Cable Insulation Stress Testing | 10kV – 100kV DC / 10mA – 200mA | High-Frequency Resonant Charger | Forced Air w/ Anti-Dust Filter | Isolated Digital Interface / USB |
| Electrolytic Port Ballast Water Treatment | 24V – 48V DC / 500A – 2,500A | Auto-Polarity Reversing H-Bridge | Forced Air or Water Cooled | Dry Contact Alarms & Ethernet |
| EV Traction Inverter & Battery Simulation | 400V – 1,200V DC / 50A – 250A | Programmable Bidirectional/Uni DC | Smart Temperature-Controlled Fan | CAN Bus / Modbus / Touchscreen |
| Titanium Alloy Hard Anodizing | 50V – 150V DC / 100A – 1,000A | Pulse-Width Modulated Rectifier | Industrial Air / External Chiller | Multi-Segment Step Profile PLC |
Why procurement teams, marine electrical engineers, and automation contractors partner directly with Guangdong Fenvix Technology Co., Ltd.
Audited and verified on site by TÜV Rheinland. Full traceability on magnetic cores, IGBT semiconductors, and copper conductors.
We perform CNC plate shearing, punching, milling, and high-purity copper plating internally for tighter lead times and thermal control.
Every unit undergoes exhaustive resistive load bank testing, oscilloscope ripple validation, and temperature scanning before packing.
Complete export handling straight to Drammen Havn or Oslo distribution terminals with seamless seaworthy plywood crating.
Addressing mains compatibility, environmental isolation, import logistics, and custom engineering parameters.