Integrated module for digital high frequency switch electromagnetic heating power supply system

Abstract

The invention relates to an integrated module of a digital high frequency switch electromagnetism heating power source system, which consists of a rectification filter circuit, an inverter circuit, an IGBT driving isolation circuit, an input phase current sampling circuit, an IGBT current sampling circuit, an IGBT driving circuit, a singlechip microcontroller, a power controller, an IGBT temperature detecting circuit, a pan bottom temperature detecting circuit, a serial communication interface, a heating loop, a power source module integral structure. The power control of the power source system integral module adopts a mode for combining frequency modulation and adjustable pulse width, so that power adjustment is smooth and even; the inverter circuit power semiconductor over-current single pulse protection method improves reliability; and when maximum power is output, work frequency greatly reduces heating of the whole machine according to resonance frequency.

Description

technical field [0001] The invention relates to an integrated module of a digital high-frequency switch electromagnetic heating power supply system, belonging to the technical field of digitally controlled high-frequency switch power supply. Background technique [0002] High-frequency electromagnetic heating technology is a new type of high-efficiency heating method, which is widely used in industrial and commercial fields, including food processing, industrial production process heating, surface heat treatment, industrial production process welding, etc. It uses high-frequency electromagnetic waves to heat An eddy current is generated in the metal, and the metal itself directly heats up the metal itself, thereby heating the medium inside the metal container. The traditional electromagnetic heating power supply has problems such as uneven power regulation, high self-heating of the power supply, high failure rate caused by unreasonable protection design, and low efficiency o...

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Problems solved by technology

The traditional electromagnetic heating power supply has problems such as uneven power regulation, high self-heating of the power supply, high failure rate caused by unreasonable protection design, and low efficiency of the circuit structure. At the same time, since the electromagnetic heating equipment is basically non-standard equipment, it needs This situation leads to problems such as difficult product development, poor standardization, low reliability, imperfect functions, and inconvenient use and maintenance. The above problems make high-power high-frequency electromagnetic heating equipment low in efficiency and poor in reliability. , long development cycle, difficult application promotion, unable to meet the needs of electromagnetic heating equipment in various fields

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