Power Supply/Inverter for Induction Heating

Product Specifications

Technical details and manufacturing context for Power Supply/Inverter

Definition

The Power Supply/Inverter is a critical subsystem within an Induction Heating Station. It takes standard AC mains power, converts it to DC, and then inverts it to high-frequency AC (typically 1-400 kHz) to drive the induction coil. This enables precise control of heating power, frequency, and timing for metal processing applications. The unit typically operates with an input voltage of 3×380 V AC ±10% (per IEC 60038), with other voltages available on request. Output power is selectable in the range of 15–60 kW, and output frequency is adjustable from 1–100 kHz for load matching. Efficiency is at least 90% at full load (per IEC 60034-2-1), and power factor is at least 0.95 at rated load (per IEC 61000-3-2). Output current capability ranges from 100–600 A peak. Cooling is by water with a flow rate of 10–20 L/min. Operating temperature range is -10 to 45°C (derate above 40°C) per IEC 60721-3-3, storage temperature is -20 to 60°C per IEC 60721-3-1, and humidity is up to 95% RH non-condensing per IEC 60721-3-3. Protection class is IP54–IP65 per IEC 60529, with higher ratings on request. Weight ranges from 80–150 kg depending on power rating, and typical dimensions for a 30 kW unit are 600×800×1200 mm (W×H×D). Materials used include silicon steel laminations, copper windings, aluminum heat sinks, ceramic capacitors, and epoxy resin insulation. This directory entry provides reference data; model-specific values and standards must be verified with the legal manufacturer or supplier.

Working Principle

The power supply/inverter operates by first rectifying incoming AC power to DC, then using solid-state switching devices (IGBTs or MOSFETs) to convert the DC back to high-frequency AC through pulse-width modulation (PWM) techniques. This high-frequency AC is delivered to the induction coil, creating an alternating electromagnetic field that induces eddy currents in conductive workpieces, generating heat through resistance. The frequency and power are adjustable to match the load and achieve precise heating profiles.

Common Materials

Silicon steel laminations, Copper windings, Aluminum heat sinks, Ceramic capacitors, Epoxy resin insulation

Technical Parameters

Parameter	Typical range	Notes & selection driver
Input Voltage	3×380 ±10% V AC	Other voltages on requestIEC 60038
Output Power	15–60 kW	Selectable power range
Output Frequency	1–100 kHz	Adjustable for load matching
Efficiency	≥90 %	At full loadIEC 60034-2-1
Power Factor	≥0.95	At rated loadIEC 61000-3-2
Output Current	100–600 A	Peak current capability
Cooling Method	Water	Flow rate 10–20 L/min
Operating Temperature	-10–45 °C	Derate above 40°CIEC 60721-3-3
Storage Temperature	-20–60 °C	Non-condensingIEC 60721-3-1
Humidity	≤95 % RH	Non-condensingIEC 60721-3-3
Protection Class	IP54–IP65	Higher on requestIEC 60529
Weight	80–150 kg	Depending on power rating
Dimensions (W×H×D)	600×800×1200 mm	Typical for 30 kW unit

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Rectifier Module
Converts incoming AC power to DC

Material: Silicon diodes, copper busbars
DC Link Capacitors Part
Filters and stores DC power, stabilizes voltage

Material: Aluminum electrolytic or film capacitors
Inverter Bridge
Switches DC to high-frequency AC using IGBTs/MOSFETs

Material: Silicon semiconductors, copper traces
Control Board
Manages switching timing, protection, and user interface

Material: FR4 PCB, electronic components
Output Transformer
Matches impedance between inverter and induction coil

Material: Ferrite core, copper windings

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Induction Heating Station

View system integration details

Manufacturers of Power Supply/Inverter

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Frequently Asked Questions

What is the typical input voltage for this power supply/inverter?

The standard input voltage is 3×380 V AC ±10% per IEC 60038, but other voltages are available on request. Always verify the exact voltage requirement with the manufacturer for your specific model.

What output power and frequency ranges are available?

The output power is selectable from 15 to 60 kW, and the output frequency is adjustable from 1 to 100 kHz for load matching. These ranges are reference values; confirm the exact capabilities for your intended application with the supplier.

What cooling method is required?

The unit requires water cooling with a flow rate of 10–20 L/min. Ensure that the cooling system meets the manufacturer's specifications to prevent overheating and maintain performance.

What are the environmental limits for operation and storage?

The operating temperature range is -10 to 45°C, with derating above 40°C. Storage temperature is -20 to 60°C, and humidity is up to 95% RH non-condensing. These limits are per IEC 60721-3-3 and IEC 60721-3-1; always check the manufacturer's data for your specific unit.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	N/A (electrical component, no pressure rating)
other spec:	Input voltage: 380-480V AC 3-phase ±10%, output frequency: 1-50 kHz adjustable, efficiency: >92% at full load
temperature:	Ambient operating range: -10°C to +40°C, cooling required above 40°C

Power Supply/Inverter

Product Specifications

Applied To / Applications

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Application Fit & Sizing Matrix

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Compliance & Manufacturing Standards