Medium-Frequency Power Supply
Medium-Frequency Power Supply
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Introduction to Medium-Frequency Power Supplies
I. Definition and Core Functions
A medium-frequency power supply is a power electronic device that converts industrial-frequency alternating current (typically 50Hz or 60Hz) into medium-frequency AC power (with a frequency range generally between 100Hz and 10kHz). Its core function is to deliver electric energy at specific frequencies—via processes such as rectification, filtering, and inversion—to meet the unique power-frequency requirements of various applications, including industrial production, medical equipment, and scientific research experiments.
II. Working Principle and Structural Composition
Basic Principles
Rectification stage: Converts power-frequency AC electricity into DC electricity using diodes or thyristor rectifiers.
Filtering stage: Use capacitors or inductors to filter the DC power, reducing ripple and making it smoother.
Inverter stage: Utilizing power devices such as IGBTs, MOSFETs, and others, DC power is converted into AC power at the desired frequency, which is adjusted by the control circuit.
Main Components
Rectifier: A common three-phase bridge rectifier circuit is used to convert alternating current into direct current.
Inverter: A core component that achieves frequency conversion by controlling the switching on and off of semiconductor devices.
Control circuit: Utilizing digital signal processing (DSP) or PLC technology to precisely adjust output frequency, voltage, and power.
Filter circuit: Smooths DC voltage and reduces harmonic interference.
III. Technical Advantages and Features
High efficiency: The energy conversion efficiency can reach over 90%, offering 10%–30% energy savings compared to conventional power-frequency equipment.
Small size: Solid-state devices, such as IGBTs, replace traditional vacuum tubes, significantly reducing the device's footprint and making installation and maintenance more convenient.
Flexible control: Digital control technology enables real-time adjustment of frequency and power, adapting to various operational requirements.
High reliability: Equipped with overcurrent, overvoltage, and overheating protection features to minimize the risk of failures.
Xi'an Aobang Technology Co., Ltd. is one of the early domestic manufacturers that have scaled up production of medium-frequency furnaces. Its main products include a full range of induction heating equipment, such as medium-frequency power supplies, IGBT power supplies, melting furnaces, and heating furnaces. For many years Focusing on Induction heating equipment Research and Development & Manufacturing Based in the ancient city of Xi'an, Aobang Technology is committed to "driving innovation in industrial heating through technology." Leveraging its core technologies cultivated over years of early-stage, large-scale production, the company provides customers with end-to-end services—from equipment selection and installation/commissioning to process optimization.
The ancient city welcomes guests, together sharing the bonds of Aobang. Looking forward to collaborating with more industry partners to push the boundaries of induction heating technology innovation. 13891865812 Mr. Luo
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Xi'an Aobang Technology Co.,Ltd
Mobile: 008613891865812 (Mr. Luo)
Phone: 008602986196449
Email: 1620573240@qq.com
Address: Boai Industrial Park, No. 268 Caotan Sixth Road, Xi'an Economic and Technological Development Zone
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