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A single-inductor dual-frequency output resonant circuit and its design method

A resonant circuit and inductor technology, applied in the design of resonant circuits, in the field of single-inductor dual-frequency output resonant circuits, can solve the problems of complex resonant circuit structure, poor frequency selection performance of resonant circuits, asynchronous dual-frequency output, etc.

Inactive Publication Date: 2016-01-27
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a single-inductor dual-frequency output resonant circuit, which solves the problems of complex resonant circuit structure, asynchronous dual-frequency output and poor frequency selection performance of the resonant circuit in the prior art.

Method used

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  • A single-inductor dual-frequency output resonant circuit and its design method
  • A single-inductor dual-frequency output resonant circuit and its design method
  • A single-inductor dual-frequency output resonant circuit and its design method

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Effect test

Embodiment 1

[0102] Embodiment 1, a single-inductor dual-frequency output resonant circuit, including a connected single-inductor 1 and an auxiliary resonant circuit, the single-inductor 1 is formed by the inductor equivalent inductance L2 and the inductor equivalent resistance R3 in series with each other; The auxiliary resonance circuit consists of the resonance inductance L 1 4 and resonant capacitor C 1 5 after series connection with resonant capacitor C 2 6 are connected in parallel. The design method is as follows:

[0103] Step 1. Determine the topological structure of the resonance circuit:

[0104] Resonance inductance L 1 4 and resonant capacitor C 1 5 after series connection with resonant capacitor C 2 6 is connected in parallel to form an auxiliary resonance circuit, and the single inductor 1 is connected with the auxiliary resonance circuit to form a resonance circuit.

[0105] Step 2. Find the design parameters of the resonance circuit;

[0106] Select the frequency f of the two sig...

Embodiment 2

[0116] Embodiment 2, a single-inductor dual-frequency output resonant circuit, including a connected single-inductor and an auxiliary resonant circuit, the single-inductor is formed by the inductor equivalent inductance L and the inductor equivalent resistance R in series; auxiliary resonance The circuit consists of resonant inductor L 1 And resonant capacitor C 1 After connecting in series with the resonant capacitor C 2 Connected in parallel. The design method is as follows:

[0117] Step 1. Determine the topological structure of the resonance circuit:

[0118] Resonance inductance L 1 And resonant capacitor C 1 After connecting in series with the resonant capacitor C 2 The auxiliary resonance circuit is formed in parallel, and the single inductor is connected with the auxiliary resonance circuit to form a resonance circuit.

[0119] Step 2. Determine the design parameters of the resonance circuit;

[0120] First select the frequency f of the two signals to be output 1 , F 2 The hi...

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Abstract

A single-sensor double-frequency output resonant circuit comprises a single sensor and an auxiliary resonant circuit which are connected, wherein the single sensor is formed by connecting a sensor equivalent inductor L and a sensor equivalent resistor R in series; the auxiliary resonant circuit is formed by connecting a resonant inductor L1 and a resonant capacitor C1 in series and then connecting the resonant inductor L1 and the resonant capacitor C1 with a resonant capacitor C2 in parallel. The designing method of parameters of the single-sensor double-frequency output resonant circuit includes the steps that first, the topological structure of the resonant circuit is determined, and then, according to the impedance characteristics of the resonant circuit, a resonance angular frequency equation of the resonant circuit is built, and the resonant circuit parameters are obtained. The single-sensor double-frequency output resonant circuit is simple in structure, all the parameters are designed totally according to deduction of mathematical logical relations without any additionally-added man-made supposed constraint, no computational items are ignored, the parameters are designed strictly, the circuit resonant frequency determined by the parameters is clear and accurate, the energy utilization rate of a double-frequency output induction heating power source is increased, the selectable frequency range of the double-frequency output resonant circuit is also correspondingly widened, and the double-frequency output performance of the resonant circuit is improved.

Description

Technical field [0001] The invention belongs to the technical field of induction heating power supplies, and specifically relates to a single-inductor dual-frequency output resonance circuit; the invention also relates to a design method of this resonance circuit. Background technique [0002] The induction heating device is a device that uses the principle of electromagnetic induction to convert electrical energy into heat. In induction heating applications, the induction coil does not directly contact the heated workpiece, and the alternating current in the coil produces an alternating magnetic field with the same frequency. An induced current (eddy current) is generated inside the heated workpiece to heat the workpiece. Existing research shows that the frequency of the current in the induction coil is an important factor in determining the heating performance of the workpiece. Since the current frequency is inversely proportional to the heating thickness (penetration depth) o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B6/02
Inventor 冷朝霞刘庆丰田地尚麦霞
Owner XIAN UNIV OF TECH
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