Electronic stability program (ESP) high-power series resonance inductor

Abstract

The invention relates to an electronic stability program (ESP) high-power series resonance inductor. The ESP high-power series resonance inductor is characterized in that the ESP high-power series resonance inductor is mainly composed of a coil packet, a connection terminal (6) and a heat-dissipating aluminum shell (7), the coil packet comprises at least two wafer magnetic cores (1) and two rectangular magnetic cores (3), the two rectangular magnetic cores (3) are respectively arranged at two ends of the wafer magnetic cores (1) which are arranged side by side, the periphery of each wafer magnetic core (1) is coated with insulating material (2), high-frequency silk-covered wires (4) are wound on the peripheries of the insulating material (2), and an epoxy air gap sheet (5) is padded between every two wafer magnetic cores (1). According to the high-power series resonance inductor, transmission and conversion of high-power energy can be achieved under the condition that volume cost is not increased, the diffusion magnetic flux of each air gap is reduced, and therefore eddy-current loss caused by coils is greatly reduced, the magnetic cores and the coils are low in temperature rise and can not be saturated easily, and a resonance circuit can be stable and reliable.

Description

technical field [0001] The invention relates to a series resonant inductor, in particular to a high-power resonant inductor used in the field of electrostatic dust removal. It belongs to the field of power electronics. Background technique [0002] In the existing series resonant circuit, especially the inductance device participating in the resonance in the field of electrostatic dust removal, in order to increase the resonant frequency, the resonant inductance of the series resonant is small, the resonant current passing through is large, the voltage on the inductance is high, and the magnetic core Both the cable and the wire pack are prone to heat, which affects the service life. At the same time, heating causes the magnetic saturation density to decrease, and the magnetic core tends to be saturated, causing the resonance current waveform to be distorted, the resonance circuit to fail, and the power switching device to be damaged. The reason is: the eddy current loss in...

AI Technical Summary

Problems solved by technology

[0002] In the existing series resonant circuit, especially the inductance device participating in the resonance in the field of electrostatic dust removal, in order to increase the resonant frequency, the resonant inductance of the series resonant is small, the resonant current passing through is large, the voltage on the inductance is high, and the magnetic core Both the wire pack and the wire pack are prone to heat, which affects the service life

At the same time, heating causes the magnetic saturation density to decrease, and the magnetic core tends to be saturated, resulting in distortion of the resonant current waveform, failure of the resonant circuit, and damage to the power switching device

The reason is: the eddy current loss in the wire package caused by the magnetic core air gap leakage flux loss in the resonant inductor causes the wire package to overheat, and the magnetic core is also overheated through conduction. At the same time, as the temperature increases, the ferrite magnetic saturation density decreases, which is easy to cause The core saturates, rendering the entire resonant circuit ineffective

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