Power Supply for High Frequency Induction Heating

The inverter power supply system is used in heat treating products that contain metallic elements during industrial production using high frequency induction heating coils.

The use of digital resonance frequency automatic tracing control.

Using induction heating has many advantages, namely no post-combustion waste, high-energy efficiency, and the possibility of local and surface heating. As such, it has been in wide use in industry for a long time. In induction heating, metal to be heated is placed near the center of the high frequency induction coil. The high frequency current flowing in the induction coils generates a rapidly changing magnetic field around the coils, causing "eddy currents" (which produces "Joule heat" due to resistance in the metal) in the body to be heated. This power supply features the digital resonance frequency automatic tracing control technology that has been incorporated in our other products like our fully digital ultrasonic cleaning device, and can be said to fully exploit digital technology to its fullest.

[Features]

1. Compact, lightweight design.

Electric power is efficiently supplied to the heating coil when a power supply device is operated near the resonance frequency, resulting in substantial reduction in size and weight as compared to the original prototype.

2. Automatic tracing control of resonance frequency.

With an automatic tracing control able to operate at 20-40kHz, it has become possible to apply the same power to heating coils, regardless of the size and number of turns.

3. Full digital control.

A highly efficient one-chip microprocessor has greatly simplified the board design, and through an improved inspection processes, quality and reliability have been improved.