Alternating-current reactor

Abstract

The invention discloses an alternating-current reactor, comprising a three-phase coil, a PCB (Printed Circuit Board) fixing seat, a resistor fixing plate, and a coil fixing seat, wherein the coil fixing seat is arranged between the resistor fixing plate and the three-phase coil and is fixed on the resistor fixing plate; the coil fixing seat is provided with a clamping slot matched with the outline of the three-phase coil; the alternating-current resistor further comprises a fixing mechanism which is used for fixing the three-phase coil onto the coil fixing seat. The alternating-current reactor disclosed by the invention has the advantages that the three-phase coil is firmly fixed on the coil fixing seat, so that mechanical vibrations are generated difficulty, and the stability of the resistor is enhanced; because flexible fixing clips are sued for fixing the three-phase coil, the three-phase coil is difficult to damage, so that the insulation performance of the three-phase coil is better; and the alternating-current reactor is simple in structure, convenient to use, good in heat-radiating performance, easy to realize and suitable for popularization and use.

Description

technical field [0001] The invention relates to electrical equipment, in particular to an AC reactor. Background technique [0002] At present, in electrical equipment, the AC reactor is a commonly used electrical component. The AC reactor is installed at the input end of the frequency converter, which can suppress the transmission of the harmonics generated by the frequency converter to the power grid, and reduce the impact of the harmonics generated by the frequency converter on other electrical appliances. Equipment interference, and limit the abnormal fluctuation of the grid voltage and the impact current on the grid, and reduce its impact on the inverter. [0003] A reactor is disclosed in US Patent US6900715, see figure 1 , figure 2 As shown, it includes a three-phase coil 1 (with an iron core inside and an enameled wire outside), and a PCB fixing seat 2 electrically connected to the three-phase coil. The three-phase coil 1 is fixed on the reactor fixing plate 4 by ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned reactor uses two claws to clamp a coil, which has the following disadvantages in actual use: (1) If the strength of the claws is too small, the clamping will not be firm, and the coil will easily generate mechanical vibration; (2) If the strength of the claws is too large, it will be easy to Cutting the enameled wire outside the three-phase coil will lead to poor insulation of the three-phase coil; (3) In order to solve the problem of poor insulation mentioned above, it is necessary to dip the assembled reactor in varnish to increase its insulation ability, but the assembly process will be complicated and the cost will increase accordingly; (4) three-phase coils need to use 6 claws, there are many parts, and the assembly process is complicated; (5) after the claws fix the three-phase coils, it is necessary to Bolts are used to fix the claws to each other. Since the bolts pass through the coil, a large amount of space is occupied inside the coil, which greatly reduces the heat dissipation effect of the coil.

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