Voltmat Power Voltmat Power

OEM/ODM AC-AC Converter Manufacturer & Factory

High-Power Precision Regulation, Custom Power Supplies & Intelligent Grid Solutions Engineered for Industrial Performance

Premium Power Engineering Solutions

Highly stabilized, variable frequency, and high-efficiency switching units tailored to meet critical voltage and digital integration demands across global applications.

High Power Digital Display DC Switching Power Supply
High Power Digital Display DC Switching Power Supply with Single Output High Efficiency for Power Electronics (12000W 24V-1000V)
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220V-600W Adjustable Regulated Single Output AC-DC Power Supply
220V-600W Adjustable Regulated Single Output AC-DC Power Supply for Industry Use with 88%-89% Efficiency and 1 Year Warranty
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72V-500W AC-DC Single Output Switching Power Supply
72V-500W AC-DC Single Output Switching Power Supply 500W Adjustable High-Stability 88% Efficiency Industrial Use
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Output 15V-700W Linear Regulated Power Supply
Output 15V-700W Linear Regulated Power Supply 700W Regulated Power Supply 12V-500V Voltage Options
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400V-1500W Single Industrial AC-DC Switching Power Supply
400V-1500W Single Industrial AC-DC Switching Power Supply with High Stability and Reliability
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Output 500V-16000W High-Power Safety DC Switching Power Supply
Output 500V-16000W High-Power Safety DC Switching Power Supply, 3-Phase Input for Battery Charging & Electroplating
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Industrial Output 24V-18000W High-Power DC Power Supply
Industrial Output 24V-18000W Three-phase Input High-Power Adjustable Single Output DC Stabilized High Efficiency Switching Power
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Output 90V-24000W AC-DC Regulating Switching Power Supply
Output 90V-24000W AC-DC Adjustable Voltage Regulating Switching Power Supply (Industrial Grade, 24V-1000V Option)
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15+
Years of R&D Focus
10k+
SQM Plant Area
99.9%
Qualification Rate
100%
Double Test Protocols

Global Commercial & Industrial Status of AC-AC Conversion

In modern electrical grids, industrial motor drives, and renewable energy integrations, AC-AC converters act as the critical gateway for frequency, phase, and voltage amplitude transformations. By decoupling input power characteristics from downstream grid loads, variable voltage frequency converters control mechanical torque and manage system harmonics.

Whether dealing with phase angle conversion in railway grids, line frequency shifting (50Hz to 60Hz or vice versa) for marine systems, or stabilizing fluctuating voltages in remote factories, direct and indirect AC-AC converter systems protect heavy assets from voltage sags, swells, and transient events. With the acceleration of Industry 4.0 and complex robotics, clean, reliable AC power is more important than ever.

Key Tech Insight: Advanced solid-state topologies—such as direct matrix converters and active front-end (AFE) double-bridge systems—allow for bidirectional energy flow and regenerative braking. This directly lowers the Total Cost of Ownership (TCO) across complex, multi-axis manufacturing installations.

Strategic Location & Shanghai Supply Chain Advantage

Operating from our dedicated 10,000 square meter factory in Shanghai, China, our company leverages one of the world's most dense electronics supply chain ecosystems. Shanghai’s deep integration with advanced semiconductor hubs, magnetic core fabricators, and specialized metalwork processors enables us to shrink design cycles and accelerate scale production.

Export logistics are simplified via the Port of Shanghai, providing direct shipping routes to Europe, the Americas, and Southeast Asia. The local ecosystem features top-tier engineers and supply chain specialists, helping us optimize raw material costs without compromising on E-E-A-T (Experience, Expertise, Authoritativeness, and Trustworthiness) standards.

Additionally, our proximity to component testing agencies and compliance houses allows us to execute rapid certifications (CE, RoHS, UL, FCC) to match specific regional compliance frameworks quickly.

End-to-End Production & Quality Control Process

A transparent look inside our Shanghai facility. Our manufacturing process combines automated precision machinery with rigorous dual testing protocols to maintain a 99.9% product qualification rate.

Wire Cutting
Wire Cutting Process
Plug-In
Component Plug-In Line
Soldering Tin
Precision Solder Wave
Test
Primary Electrical Test
Glue Filling
Insulation & Glue Filling
Burn-In Test
Full-Load Burn-In Test
Packaging
Moisture-Proof Packaging
Winding Machine
Automatic Transformer Winding
Wire Cutting Machine
CNC Wire Cutting Machine
Automatic Soldering Machine
Automatic Soldering Machine
Laser Engraving Machine
Laser Mark & Engraving
Canning machine
Automatic Canning Machine
Assembly Line
Final Assembly Line
DC Power Supply Tester
DC Power Supply Tester
AC Withstand Voltage Tester
AC Withstand Voltage Tester
Constant temperature and humidity chamber
Constant Temp & Humidity Chamber
Optical microscope
Optical Microscope Joint Check
Aging test
High Load Thermal Aging Test
Design
In-House OEM/ODM Design & Custom R&D

Engineered for Global Demands & Local Applications

From microsecond transit regulation to megawatt industrial installations, our custom design workflows are engineered for specialized environments.

Industrial Motor Drives & Heavy Industry

Standardizing grid frequencies for process operations. Our systems provide voltage control to prevent harmonic feedback back into your facility's internal mains, lowering maintenance costs.

Grid Simulation & Research Facilities

For testing devices destined for foreign markets. Deliver precise adjustments from 45Hz to 500Hz with clean, low-distortion sine wave signals that replicate global grid networks.

Avionics, Marine & Defense Applications

Delivering stable 400Hz and multi-phase configurations for specialized applications. Built with robust, moisture-proof and vibration-damping enclosures to withstand harsh operating conditions.

Understanding Procurement Requirements: What Global Engineering Buyers Seek

B2B procurement agents require more than standard specifications; they look for design survivability, MTBF (Mean Time Between Failures), and long-term parts availability. Under E-E-A-T principles, we maintain full traceability of internal components—from magnetic wire core grades to thermal potting silicones.

Our manufacturing system incorporates complete traceability for power transistors, custom heat sinks, and PCB assembly batches. This structural transparency simplifies local compliance audits, reducing field installation downtime and accelerating regulatory sign-offs.

Our Dual-Stage Testing Protocols & Quality Assurance

To achieve a 99.9% product qualification rate, every single AC-AC converter, DC power supply, and regulator undergoes a strict dual-testing regimen before leaving our Shanghai warehouse:

  • Automated Computer Diagnostics: Confirms switching frequency, efficiency curves under load steps, signal harmonics, and active protection limits (OVP, OCP, OTP).
  • Manual Bench Auditing: Engineers verify mechanical tolerances, connector torque, digital interface inputs, and insulation resistances.
  • Extended Environmental Stress: Devices run under load in our temperature-controlled aging rooms to screen out early component failures.

This hybrid approach prevents infant-mortality component issues from reaching your field operations, protecting both your budget and scheduling milestones.

Heavy-Duty Shipping & Protective Export Packaging

Long-distance international shipping exposes sensitive power components to damp ocean air, rough overland transit, and sudden impact shocks. To ensure your order arrives in factory condition, we use four layers of protective packaging:

  • Moisture-Proof Barrier: Sealed polymer wraps prevent condensation from settling on trace layers and internal copper windings.
  • Conformant Shock Absorption: Molded foam inserts disperse acceleration spikes and physical impacts during transit.
  • Rigid Dual-Wall Cardboard: Outer boxes resist punctures and corner crushing during stacking.
  • Reinforced Wood Framing: Heavy-gauge external wooden crates support large multi-kilowatt power supplies.

Expert Engineering Q&A

Detailed explanations regarding topology selection, custom design limits, thermal management, and installation practices.

What is the primary difference between a direct Matrix Converter and an indirect DC-link AC-AC Converter? +
An indirect AC-AC converter utilizes a DC intermediate link (with capacitors or inductors) to buffer active power, converting AC to DC and then DC back to AC. This isolates input and output frequencies and voltage variations. A direct matrix converter does away with the DC-link capacitor entirely, using bidirectional semiconductor switches to connect any input phase directly to any output phase. While matrix topologies reduce overall footprint, they require more complex switching controls and have a maximum voltage transmission ratio typically limited to 0.866.
How do you handle thermal management on high-power switching modules above 10kW? +
For power demands exceeding 10,000W, we utilize custom-engineered thermal solutions. These combine high-conductivity copper baseplates, direct-bonded copper (DBC) ceramic substrates, and temperature-controlled forced air paths. When specified for harsh conditions, we design custom liquid-cooled cold plates and high-durability fan systems, ensuring critical semiconductor junctions operate well below rated thermal thresholds.
Can your factory customize the input and output parameters for non-standard grids (e.g., 400Hz aviation)? +
Yes, our in-house engineering team designs and manufactures systems for 400Hz aviation test bays, marine grids, and custom high-frequency industrial machinery. We offer adjustable ranges across single-phase and multi-phase outputs with customizable frequency capabilities to match your specific testing protocols.
What certifications and compliance testing protocols are available for international projects? +
We offer comprehensive documentation including CE, FCC, and RoHS declarations. Our factory testing processes utilize calibrated digital power analyzers, withstand voltage testers, and environmental chambers. For specific contract needs, we can arrange third-party inspections to verify compliance with local grid requirements.
What is the standard lead time for custom OEM projects at your Shanghai facility? +
For custom OEM projects, preliminary design approval takes 2–3 weeks. Once layouts are approved, manufacturing, integration, and testing are typically completed within 6–8 weeks. Standard power supply configurations are kept in stock and can ship immediately from our warehouse.

Industrial Power Supply Lineup

Explore our high-stability, broad-output voltage power units designed for heavy industrial use, battery charging, and electroplating processes.

150V-16000W High-Power AC-DC Switching Power Supply
Output 150V-16000W High-Power 89% Efficiency 1 Year Warranty Safety AC-DC Single Output DC Switching Power Supply (24V-1000V)
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220V-5000W DC Power Supply
Output 220V-5000W DC Power Supply Output Switching Power Supply Single Output Diverse DC Uses with Optional 24V-1000V Range
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High-Stability 1000V-8000W DC Power Supply
High-Stability Single Output 1000V-8000W Industrial DC Switching Power Supply with High Efficiency
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90V-8000W DC Power Supply
Output 90V-8000W High-Stability DC Switching Power Supply 88-89% Efficiency Overcurrent/Overvoltage Protection Industry Use 1
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72V-6000W AC-DC Power Supply
Output 72V-6000W High-Power AC-DC Power Supply Single Voltage Input 24V-1000V Options Precise Battery Charging
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80V-12000W Industrial Adjustable Switching Power Supply
Output 80V-12000W High Power DC Single Industrial Adjustable Switching Power Supply
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90V-700W AC-DC Switching Power Supply
90V-700W Regulated Single Output AC-DC Switching Power Supply 600W-1000W Adjustable 12V-500V High Efficiency Industrial Use High
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High-Precision DC Adjustable Switching Power Supply 300V-600W
High-Precision Single DC Adjustable Switching Power Supply (300V-600W 12V-500V Optional Voltage) for Industry Use 89% Efficiency
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