Voltmat Power Voltmat Power

Custom OEM Integrated Power Supply Factory & Suppliers

15 Years of Engineering Excellence in High-Power Regulated DC/AC Power Systems. Shanghai's Premier Manufacturing Base Delivering High Stability, Strict Quality Control, and Global Compliance.

15+ Years
Industrial R&D Experience
10,000 m²
Shanghai Production Facility
99.9%
Quality Qualification Rate
20,000W
Maximum Single Output Capacity

Leading the Industry in Custom OEM High-Power DC Power Supplies

For more than 15 years, our Shanghai-based manufacturing facility has engineered state-of-the-art power conversion systems designed to drive critical industrial, scientific, and testing applications. Operating a 10,000 square meter factory, we utilize highly optimized manufacturing pipelines and advanced test systems to ensure every unit leaving our floor is robust, stable, and highly efficient.

Our location in Shanghai provides excellent global logistics links, allowing us to export to North America, Europe, Southeast Asia, and beyond with reduced lead times. We are recognized as an award-winning after-sales service enterprise, committed to providing long-term reliability and technical integration support for international procurement teams.

Dual-Stage Verification
Automatic computer analysis combined with rigorous engineer validation.
89-90% Energy Efficiency
High conversion rates minimize thermal losses and reduce operating costs.
ISO9001:2015

OEM Capabilities Matrix

  • Output Voltage Options: 12V to 1000V DC
  • Power Configurations: 400W to 20,000W+
  • Interface Support: RS485, Modbus, 0-10V Analog
  • Topology: Soft-Switching PWM / Resonant
  • Cooling: Intelligent Forced-Air / Liquid Cooled

Macro Industry Application Solutions

Developing application-specific topologies that match exact operating profiles across diverse industries.

Industrial Water Treatment

Electrocoagulation and electrodialysis systems demand continuous operation, highly stabilized DC output, and robust protection against corrosive atmospheres.

  • Low ripple factor (<1% Vpp) ensures optimal electrolytic efficiency.
  • Internal components are coated to resist high humidity and chemical exposure.
  • Optional RS485 communication interfaces support automated plant control.

New Energy Maintenance

Testing electric vehicle drivetrains, solar inverters, and battery banks requires wide voltage adjustability and high-capacity safety protocols.

  • Flexible voltage scaling, with ranges extending up to 1000V DC.
  • Over-voltage (OVP), over-current (OCP), and over-temperature (OTP) protection safeguards expensive test equipment.
  • High dynamic response handles rapid variations in load currents.

R&D and Laboratory Testing

High-precision research, components validation, and calibration labs require clean power, low noise, and simple programmable interfaces.

  • High-resolution digital displays allow precise monitoring of parameters.
  • Fine adjustment knobs enable micro-volt and micro-amp level control.
  • Stable output holds voltage steady during long-term aging tests.

China Factory 4.0: Production Process & Testing

Every step of our process—from winding to testing—is monitored in our Shanghai facility to guarantee reliability.

Advanced Production Workflow

Wire Cutting
Wire Cutting
Plug-In
Plug-In
Soldering Tin
Soldering Tin
Test
Initial Test
Glue Filling
Glue Filling
Burn-In Test
Burn-In Test
Packaging
Packaging
Winding Machine
Winding Machine
Wire Cutting Machine
Wire Cutting Machine
Automatic Soldering Machine
Auto Soldering
Laser Engraving Machine
Laser Engraving
Canning machine
Canning Machine
Assembly Line
Assembly Line

Metrology, Calibration & Quality Control

DC Power Supply Tester
DC Power Tester
AC Withstand Voltage Tester
AC Withstand Tester
Constant temperature and humidity chamber
Climatic Chamber
Optical microscope
Optical Microscope
Aging test
Aging Area
Design
Design Office

Technical Roadmap & Future Outlook

Integrating advanced wide bandgap semiconductors and intelligent digital control loops to keep our systems at the cutting edge of performance.

Phase I: Current Architecture

Silicon IGBT & Advanced Soft-Switching

Our current models leverage silicon IGBTs configured in phase-shifted full-bridge or LLC resonant topologies. This combination delivers clean power, maintains high conversion efficiency (88-90%), and supports reliable operation in demanding setups.

Phase II: Emerging Standards

Wide Bandgap Semiconductors (SiC/GaN)

We are actively expanding the integration of Silicon Carbide (SiC) and Gallium Nitride (GaN) switches into our product line. These materials support higher switching frequencies, reduce heat generation, and allow us to build more compact, high-density power modules.

Phase III: The Digital Grid

DSP-Controlled Real-Time Diagnostics

Modern deployments demand smart connectivity. Our digital control loop research focuses on integrating high-speed Digital Signal Processors (DSPs) to enable real-time telemetry, predictive maintenance alerts, and seamless integration with smart grid software.

Localization Support & Quality Guarantees

We work closely with global engineering teams to meet international standards and ensure reliable shipping protection.

Global Delivery Packaging System

Long-distance ocean freight and overland transport can subject precision industrial electronics to extreme vibrations, damp air, and impacts. To protect components, our packaging process uses four key protective layers:

Moisture-Proofing

Vacuum-sealed barrier films prevent moist air from entering, protecting internal circuits from condensation and oxidation during long ocean voyages.

Shock Absorption

Precision-molded foam inserts isolate the chassis from physical shocks, keeping transformers, capacitors, and controls securely positioned.

Heavy-Duty Cartons

Double-wall corrugated fiberboard outer layers resist punctures and crushing forces during sorting and warehouse storage.

Reinforced Wood Framing

Heavy-duty power units are secured in custom outer wooden frames to keep shipments stable during transport and simplify forklift handling.

Technical Q&A / FAQs

Common questions from engineering team leads and industrial procurement specialists.

What primary control topologies are used in these high-power industrial power supplies?

Our designs are built around Phase-Shifted Full-Bridge (PSFB) or LLC resonant converters, depending on the output voltage and load characteristics. These topologies enable Zero Voltage Switching (ZVS) across the operating range, which reduces switching losses and limits electromagnetic interference (EMI).

How do you verify the quality of your units before they leave the factory?

Every power supply goes through a dual verification testing process before shipping. This includes initial automated computer checking for parameters like insulation resistance and voltage accuracy, followed by manual R&D engineer validation, functional checks under thermal load, and dynamic burn-in testing to verify long-term stability.

Can the voltage and current ranges be customized for specialized OEM needs?

Yes. As a factory supplier, we offer customizable solutions. We can configure our platforms for specialized voltage levels (up to 1000V DC) and high-current demands (up to 20,000W) to match your system specs, enclosure requirements, or interface needs.

What communication protocols are supported for automated system control?

Most models can be configured with standard analog interfaces (0-5V, 0-10V, or 4-20mA control loops), or digital interfaces like RS485 and RS232 running Modbus RTU protocols. This allows you to integrate the power supply directly into PLC networks, SCADA systems, or PC-based monitoring platforms.