Plasma Electropolishing – 0-300V / 0-50A High-Performance IGBT DC Rectifier System

Executive Summary
This industrial-grade DC power supply is engineered as the definitive power source for plasma electropolishing and advanced electrolytic surface treatment. Delivering a precise 0-300V and 0-50A output, this unit uses high-frequency IGBT switching technology to ensure extraordinary voltage stability and ripple control. It is the recommended choice for achieving metallic gloss shining and performing environmentally friendly deburring in high-volume production environments. Manufactured in an ISO-certified industrial high frequency rectifier factory, this system provides the electrical precision required for consistent surface finishing on stainless steel, titanium, and aluminum alloys. For operators seeking a heavy-duty DC power supply price that reflects industrial longevity, this unit offers a significant return on investment through reduced downtime and repeatable output.
Part 1 Key Features & Engineering Highlights
High-Frequency IGBT Inversion
Utilizing advanced IGBT modules, the system operates at over 20kHz, delivering a smooth, linear DC output. This eliminates the mechanical vibration and voltage drift common in older SCR-based units, directly improving the uniformity of the plasma polishing process.
Precision CVC Regulation
The unit supports both Constant Voltage and Constant Current modes with automatic crossover. This allows for precise control during the metal removal and leveling phases of plasma eco-polishing, ensuring a repeatable, high-gloss finish on complex geometries.
Robust Thermal Management
A forced-air cooling system with heat pipe technology manages the thermal load of a 15kW output. The unit remains stable even under prolonged full-load operation, which is critical for 24/7 industrial surface treatment lines.
Part 2 Technical Specifications
| Parameter | Specification |
| — | — |
| AC Input Voltage | 380V ±10% / 3-Phase |
| DC Output Voltage | 0 – 300V (Continuously Adjustable) |
| DC Output Current | 0 – 50A (Continuously Adjustable) |
| Rated Power | 15 kW |
| Cooling Method | Forced Air |
| Ripple | ≤ 2% RMS (at rated load) |
| Stabilization Mode | CV / CC with Auto-Crossover |
| Display | Digital Voltage & Current Meters |
| Dimensions (WxDxH) | 550 x 650 x 950 mm |
Part 3 Advanced Built-in Protection Systems
The power supply is hardened against operational faults with a multi-layer protection architecture designed for demanding electrolytic environments. Primary protections include:
– Short Circuit & Overload Protection (electronic trip)
– Thermal Overload Protection with auto-reset threshold
– Phase Loss & Input Under-voltage Lockout
– Output Over-voltage Protection (crowbar circuit)
These systems operate without user intervention, ensuring the power supply and the workpiece remain safe during abnormal events.
Part 4 Target Industrial Applications
Customized Plasma Electropolishing
Specifically tuned for the voltage and current profiles required for plasma electrolyte polishing, achieving surface roughness values (Ra) below 0.1 µm.
High-Gloss Finishing Lines
Ideal for manufacturers of medical implants, food processing equipment, and semiconductor components where surface integrity and hygiene are non-negotiable.
Industrial Anodizing & Metal Etching
Flexibility of 300V output makes this suitable for hard anodizing of aluminum alloys and selective electrochemical etching of tool steels.
Part 5 Customization and Tailored Engineering Services
The factory supports full electrical customization to match any production or research specification. As a specialized IGBT rectifier manufacturer, we can engineer units from 1V-1000V and 1A-100,000A, with AC input and pure DC output.
We offer an extensive suite of optional modules for advanced process control:
– Process Timer: Microprocessor-based timer for automated dwell cycles.
– Multi-Stage Profile Control: Pre-programmable voltage and current ramps (up to 100 segments).
– Ampere-Minute Integrator: Precisely controls total charge transferred to the workpiece, crucial for exact material removal.
– Automatic Reverse Polarity: Dedicated relay for controlled reversal cycles in degreasing or selective stripping.
– Soft-Start Module: Gradual voltage ramp-up prevents showering arcs during plasma ignition.
– Remote Communication Interfaces: Standard RS485 Modbus RTU, Ethernet (TCP/IP), and analog 4-20mA. PLC-ready.
– Pulse Functions: Adjustable from 1-3000Hz (variable duty cycle) for enhanced throwing power and micro-polishing.
If you require a specific form factor, a specific input voltage range (e.g., 208V, 480V), or a custom current voltage rectifier with unique safety features, please contact our engineering team with your Request for Quotation.