High Current
12V/15V 5000A-6000A 75KW Water Cooled Rectifier
- Topology: IGBT High-Freq Switch
- Cooling: Deionized Water Heat Exch.
- Regulation: CV / CC Digital Display
Precision Industrial Systems
Engineered Rectification & PEO Power Equipment
Direct factory production supporting bi-polar pulse MAO, ultra-low ripple hard anodizing, and heavy electrochemistry lines.
48kW IGBT
12V 4000A 48kW High Frequency Rectifier
- Ripple Factor: ≤ 2% Full Scale
- Control: RS485 Modbus / 4-20mA
- Duty Cycle: 100% 24/7 Heavy Load
8000A Heavy Duty
8000A 12V Water-Cooled Galvanizing Source
- Chassis: IP54 Sealed Cabinet
- Efficiency: ≥ 90% at Rated Load
- Protection: Phase Loss, Over-Temp
Hard Anodizing
100A–3000A Modular Anodic Oxidation Rectifier
- Volt Window: 0-12V / 0-24V / 0-60V
- Ramping: Multi-Step Programmable
- Application: Al Hard Coating, Pre-PEO
Titanium MAO/PEO
150V 50A Titanium Alloy Anodizing / MAO Unit
- Voltage Peak: Up to 150V Continuous
- Current Mode: Ultra-Stable CC Control
- Cooling: Forced Air Internal Duct
High Voltage DC
800V 50A 20kW Programmable High Voltage Supply
- Range: 400V–800V Wide Output
- Pulse Speed: Slew Rate Adjustable
- Interface: Touch Panel + SCADA Link
Specialized PEO
80kW 1000V–3200V High-Precision Pulsed Source
- Peak Energy: Capacitor-Buffer Assist
- Spark Quench: Nanosecond Arc Detect
- Certifications: CE, LVD, EMC Tested
Descaling & Pulse
48V 625A 30kW Auto Polarity Reversing Source
- Switch Cycle: User-Defined 4-Segment
- Polarity: Solid-State H-Bridge
- Usage: Surface Activation & Clean
Technical Whitepaper
Electrical Architecture for Plasma Electrolytic Oxidation (PEO/MAO)
Micro Arc Oxidation (MAO), commercially designated as Plasma Electrolytic Oxidation (PEO), represents an advanced electrochemical surface conversion technique for lightweight passivating valve metals including Aluminum (Al), Magnesium (Mg), and Titanium (Ti). Operating well beyond the conventional dielectric breakdown voltage (typically 350V to 800V DC or pulsed AC), MAO induces localized micro-discharge plasma events along the substrate-electrolyte interface. These micro-arcs generate instantaneous localized temperatures exceeding 2,500K to 3,000K alongside extreme pressures, converting amorphous barrier oxides into high-density crystalline ceramic phases—primarily alpha-Al2O3 (corundum), gamma-Al2O3, and complex substrate-electrolyte spinels.
The overarching determinant of coating stoichiometry, tribological hardness (exceeding 1800–2200 HV0.1 on aluminum), and porosity reduction is the transient power supply topology. Unlike basic DC anodizing rectifiers, an industrial-grade OEM/ODM Micro Arc Oxidation Power Supply demands nanosecond-scale current rise times, asymmetric bi-polar pulsing, and agile energy quenching to prevent destructive arc transition into localized thermal cavitation.
Key Engineering Finding: High-density PEO ceramic coats require independent parameter regulation over the positive (anodic) and negative (cathodic) pulses. Operating with duty ratios between 10% and 45% and pulse repetition frequencies ranging from 100 Hz to 2,000 Hz mitigates pore enlargement, prevents electrolyte boiling at the boundary layer, and facilitates uniform crystalline transformation across complex component geometries.
Asymmetric Bi-Polar Pulsing
Independent setting of positive voltage (0–1000V) and negative voltage (0–350V). The negative pulse neutralizes accumulated double-layer surface charges, detaches gas bubbles, and refines the morphological grain structure.
Nanosecond Arc Suppression
Integrated FPGA-driven dI/dt and dV/dt monitoring circuits detect spark-to-arc breakdown within 500 nanoseconds, cutting primary IGBT drive pulses to avert catastrophic substrate melting and pitting.
Step-Ramp Profiling
Multi-segment programmatic current density ramping (0.05 A/cm² to 0.5 A/cm²). Supports soft-start ignition, constant-current breakdown stages, and voltage-limiting final consolidation stages.
Regional Industrial Integration
Local Application Scenarios Across the Braga Industrial Corridor
Powering high-specification surface functionalization in Braga, Guimarães, Famalicão, and the greater Minho manufacturing cluster.
The Braga industrial ecosystem—anchored by leading engineering research at Universidade do Minho, the International Iberian Nanotechnology Laboratory (INL), and specialized metalworking parks—has evolved into a premier European hub for advanced tooling, aerospace precision components, and biomedical devices. Micro Arc Oxidation power sources engineered by Fenvix deliver targeted electrical characteristics customized for Braga’s primary export sectors:
Automotive Powertrain & EV Lightweighting
Tier-1 automotive sub-suppliers in Braga and Vila Nova de Famalicão apply PEO layers to cast aluminum pistons, turbocharger compressor impellers, and electric vehicle (EV) battery aluminum enclosures, achieving unmatched electrical isolation, dielectric breakdown strength (>25 kV/mm), and thermal barrier protection.
Precision Mold & Die Casting Tooling
Braga's prominent mold-making sector leverages high-frequency bi-polar MAO to coat complex injection cores and magnesium die-casting dies. The resulting corundum-phase ceramic barrier provides extreme abrasive wear resistance and anti-galling performance without dimensional deformation.
Biomedical Implants & Surgical Devices
Collaborating with local bioengineering labs, orthopedic implant manufacturers use our programmable titanium anodizing and MAO rectifiers to synthesize porous, bioactive hydroxyapatite-doped TiO2 surfaces on Grade 5 Ti-6Al-4V dental posts and joint replacements, substantially accelerating osseointegration.
Aerospace & Defense Mechanical Assemblies
Specialized structural aerospace brackets, drone guidance chassis, and hydraulic manifolds machined from wrought 7075 and 6061 alloys undergo plasma conversion to replace toxic hexavalent hard chromium plating, meeting strict REACH compliance and passing 1,000+ hour ASTM B117 salt spray tests.
Strategic Outlook
Braga’s Industrial Transition: Trends in Advanced Surface Treatment
Aligning electrical power infrastructure with European decarbonization goals and high-yield manufacturing.
As Northern Portugal accelerates its Plano de Recuperação e Resiliência (PRR) and aligns with EU Green Deal directives, local surface treatment and anodizing factories face strict regulatory restrictions regarding heavy metal discharge and carbon intensity. This structural shift drives several prominent technical trends in power supply procurement:
1. Replacement of Hazardous Chemistries with Environmentally Benign Alkaline Electrolytes: Conventional hard chrome plating utilizing carcinogenic Cr(VI) electrolytes is rapidly being phased out across Minho factories. Micro Arc Oxidation uses dilute, eco-friendly alkaline silicate, phosphate, or aluminate electrolytes. However, running stable plasma discharges in non-toxic electrolytes demands higher instantaneous breakdown voltages and intelligent pulsing controls to maintain uniform ceramic growth.
2. High Electrical Efficiency and Energy Recovery: Historically, MAO has been regarded as energy-intensive. Modern OEM/ODM suppliers like Fenvix integrate third-generation Silicon Carbide (SiC) and high-speed IGBT semiconductor switches that operate at ~90% electrical efficiency. Furthermore, regenerative pulse-decay circuits capture reactive inductive energy, reducing overall line-draw by up to 28% compared to legacy line-frequency transformer designs.
3. Industry 4.0 Telemetry and Digital Twin Integration: In alignment with smart factory investments in the Ave and Cávado sub-regions, modern MAO power plants in Braga must integrate directly with supervisory SCADA, MES, and PLC control centers via Profinet, Ethernet/IP, and Modbus TCP. Real-time logging of voltage-current envelopes, pulse duty shifts, and electrolyte temperature feedback ensures complete quality traceability for safety-critical aerospace and automotive batches.
| Performance Metric | Conventional DC Anodizing | Hard Chrome Plating (Cr VI) | Fenvix Asymmetric Pulse MAO/PEO |
|---|---|---|---|
| Micro-Hardness (Al Substrate) | 350 – 500 HV | 800 – 1000 HV (Steel Base) | 1500 – 2200 HV (α-Al2O3 Phase) |
| Process Operating Voltage | 12V – 24V DC | 6V – 15V DC | 400V – 900V Pulsed Bi-Polar |
| Environmental / REACH Safety | Acidic Mist, Neutral Safe | Strict Restriction (Carcinogenic) | 100% REACH Compliant (Dilute Silicates) |
| Dielectric Breakdown Strength | 10 – 15 kV/mm | Conductive Metal Layer | > 25 – 35 kV/mm Isolation |
| Corrosion Resistance (Salt Spray) | 300 – 500 Hours | 500 – 800 Hours (Micro-cracked) | > 1500 Hours (ASTM B117 Sealed) |
Enterprise Strengths
Full-Chain Manufacturing & Testing Capabilities
ISO 9001 certified engineering since 2013, delivering non-standard power electronics directly from our Guangdong factory floor to European integrators.
13+
Years Industry Experience
3,000m²
Modern Assembly Workshop
15,000A
Maximum DC Output Tested
100%
Full-Load Burn-In Inspection
Guangdong Fenvix Technology Co., Ltd. eliminates supply chain fragmentation by consolidating structural fabrication, high-conductivity copper busbar machining, power module staging, electronic driver testing, and finished-product burn-in under one roof. Unlike trading brokers, our direct engineering team designs and manufactures every chassis, heatsink assembly, and magnetic component, guaranteeing mechanical robustness, electromagnetic compliance, and shortened delivery lead times for European partners.
Production Workshop
Finished Cabinets
Assembly Line
Commissioning
Metal Fabrication
Waveform QA
Buyer Guidance
Procurement FAQ for Portuguese & European Engineers
Practical considerations regarding technical configuration, electrical compatibility, compliance, and international logistics.
How does a Micro Arc Oxidation (PEO) power supply differ from a standard anodizing rectifier?
Conventional anodizing rectifiers operate at lower direct current voltages (typically 12V to 60V DC) below the dielectric breakdown of the natural oxide film. In contrast, an MAO power supply generates pulse voltages from 350V up to 1000V DC or bi-polar AC, establishing continuous micro-arc plasma discharges across the workpiece. This necessitates specialized high-speed switching IGBTs, isolated high-frequency transformers, rapid quenching circuits to prevent destructive thermal arcing, and heavy-duty water cooling to sustain high current pulses under continuous load.
Are Fenvix power supplies compatible with Portugal’s electrical grid standard?
Yes. All custom export units shipped to Portugal and the European Union are engineered for three-phase 400V AC (±10%), 50Hz mains supply. We provide full CE-marked configurations compliant with the Low Voltage Directive (LVD 2014/35/EU) and Electromagnetic Compatibility (EMC 2014/30/EU), fitted with standard internal active power factor correction (PFC) yielding PF ≥ 0.95 to satisfy local utility requirements.
What cooling infrastructure is recommended for continuous MAO operation in Braga?
Because MAO operates at high energy densities, we generally recommend our closed-loop deionized water-cooling system for power stages above 30kW. Water-cooled designs seal all internal power electronics inside an IP54 or IP55 enclosure, shielding sensitive control boards and IGBT modules from corrosive acid fumes, alkaline aerosols, and workshop dust prevalent in anodizing facilities. For clean lab environments or lower-power prototype lines (under 15kW), heavy-duty forced air cooling with conformal-coated boards is available.
Is there a Minimum Order Quantity (MOQ) for custom OEM/ODM configurations?
No. We support single-unit orders (MOQ: 1 Set) to accommodate pilot research lines, university engineering departments (such as Universidade do Minho), and specialized prototype runs. We also provide scale manufacturing for complete multi-unit automated plating and oxidation production lines.
What trade delivery terms and payment mechanisms are available for Portugal?
We handle standard commercial Incoterms including EXW, FOB, CIF (Port of Leixões / Porto), and complete DDP (Delivered Duty Paid directly to your factory in Braga, Guimarães, or Famalicão, handling all customs clearance and import VAT). Accepted payment methods include T/T, Irrevocable L/C at sight, and credit card in EUR, USD, or GBP.
What remote monitoring and automation protocols are integrated into the power units?
Standard configurations include an isolated RS485 communication port running Modbus-RTU protocol alongside 0–5V/0–10V and 4–20mA analog terminals for start/stop, current limit, and voltage feedback. Optional Ethernet interfaces (Modbus-TCP, Profinet) and intuitive 7-inch color touchscreens enable seamless integration into automated PLC lines, recipe profiling, and real-time process logging.
Consult with Power Supply Engineers for Your Braga Facility
Whether you are designing a high-frequency bi-polar Micro Arc Oxidation pilot line, upgrading an existing hard anodizing tank, or requiring custom pulse rectifiers, share your load specifications to receive an engineered schematic and quotation.