Ripple suppression circuit with adjustable frequency range

Abstract

The utility model discloses a ripple suppression circuit with an adjustable frequency range, which comprises a rectification direct current output circuit which is connected in parallel with at least one group of series circuit of an electrodeless capacitor and an adjustable inductor. According to the ripple suppression circuit with the adjustable frequency range, the electrodeless capacitor and the adjustable inductor are connected in series; selecting a series circuit of a certain number of capacitors and adjustable inductors according to a ripple frequency order required to be suppressed; convenience is provided for output operation of the high-frequency power supply, the design structure is simple, and ripple waves in a certain frequency range can be restrained; operation is safe and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to a frequency range adjustable ripple suppression circuit. BACKGROUND

[0002] At present, domestic high-frequency power supply equipment has been booming, especially with the continuous development of China's machinery manufacturing industry, China's aerospace, automobile and some high-end mechanical parts field have continuously improved the requirements for heat treatment process technology equipment, especially the use of some special materials and special welding machine equipment. In terms of the current domestic situation, the ripple suppression of ordinary solid-state high-frequency power supply is only completed by the DC flat wave reactor, or a fixed value ripple suppression circuit is added, and the ripple suppression is relatively limited and single in the actual application process.

[0003] The disadvantages of the traditional ripple control are:

[0004] 1) Single flat wave reactor ripple suppression or only one fixed frequency point ripple suppression, once the capacitance or inductance value deviates after long-term use, the ripple suppression will fail and new ripple will be generated.

[0005] 2) Poor output ripple suppression effect of the equipment, and specific circuit setting is required for the ripple of the non-stop frequency band.

[0006] 3) Poor DC ripple suppression effect of the welding machine power supply will affect the welding quality, especially on the small power high frequency output welding machine power supply. INVENTION CONTENTS

[0007] The utility model aims at overcoming the defects of the prior art, providing a frequency range adjustable ripple suppression circuit, which can realize a new topology structure element update application, can adjust the ripple suppression range according to the existing input rectification system output DC ripple frequency, overcome the defects of fixed value ripple suppression, prevent the use or generation of new ripple due to the cheapness of capacitance or inductance value, and can freely select one or more groups of corresponding non-polar capacitors and adjustable inductance series circuits according to the order requirement of ripple suppression.

[0008] The technical scheme for realizing the above-mentioned purpose is: a frequency range adjustable ripple suppression circuit, comprising a rectification DC output circuit, and at least one group of non-polar capacitors and adjustable inductance series circuits are connected in parallel to the rectification DC output circuit.

[0009] The frequency range adjustable ripple suppression circuit, wherein the rectification DC output circuit is composed of a rectification device and a DC output with flat wave reactor.

[0010] The frequency range adjustable ripple suppression circuit, wherein the rectification device adopts a 6-pulse rectification device.

[0011] The frequency range adjustable ripple suppression circuit, wherein the number of series circuits of the non-polar capacitor and the adjustable inductor is selected according to the order requirement of ripple suppression.

[0012] The frequency range adjustable ripple suppression circuit of the utility model, non-polar capacitor and adjustable inductor are connected in series;According to the order of ripple frequency that requires suppression, a certain number of capacitors are selected and the inductance of adjustable inductor is adjusted;It provides convenience for the output operation of high-frequency power supply, and the design structure is simple, and the suppression of ripple in a certain frequency range can be completed;It is safe and reliable in operation. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the frequency range adjustable ripple suppression circuit of the utility model. DETAILED DESCRIPTION

[0014] In order to enable the technician in the technical field to better understand the technical scheme of the utility model, the specific implementation mode thereof is described in detail as follows:

[0015] Please refer to Figure 1 The utility model discloses a frequency range adjustable ripple suppression circuit, including rectification direct current output circuit, and rectification direct current output circuit is by rectification device 1 and with reactance flat wave's direct current output 2 is formed, and rectification device adopts 6 pulse rectification device.The rectification direct current output circuit has been connected in parallel at least one group non-polar capacitor C and adjustable inductor L's series circuit 3.

[0016] According to the order requirement of ripple suppression, the number of series circuits of the non-polar capacitor C and the adjustable inductor L is selected.In this embodiment, the order requirement of ripple suppression is 4 orders, and 4 groups of series circuits of the non-polar capacitor C and the adjustable inductor L are connected in parallel.

[0017] The frequency range adjustable ripple suppression circuit of the utility model, this connection mode can best realize the ripple suppression required, and realizes a ripple frequency regulation that can be selectively flexibly allocated between the direct current output of equipment and load, overcomes the defect of fixed value ripple suppression, prevents from being unable to use or generating new ripple due to the cheapness of capacitor or inductance value.

[0018] In summary, the frequency range adjustable ripple suppression circuit of the utility model, non-polar capacitor and adjustable inductor are connected in series;According to the order of ripple frequency that requires suppression, a certain number of capacitors are selected and the inductance of adjustable inductor is adjusted;It provides convenience for the output operation of high-frequency power supply, and the design structure is simple, and the suppression of ripple in a certain frequency range can be completed;It is safe and reliable in operation.

[0019] Those skilled in the art of the present technology should realize that the above embodiments are only used to illustrate the present application, and are not used as a limitation of the present application, as long as the changes and modifications of the above described embodiments are within the scope of the present application.

Claims

1. A ripple suppression circuit with adjustable frequency range, characterized in that, It includes a rectified DC output circuit, wherein the rectified DC output circuit is connected in parallel with at least one series circuit of a non-polar capacitor and an adjustable inductor; The rectified DC output circuit consists of a rectifier and a DC output with anti-smoothing capability.

2. The frequency-range adjustable ripple suppression circuit according to claim 1, characterized in that, The rectifier uses a 6-pulse rectifier.

3. The frequency range adjustable ripple suppression circuit according to claim 1, characterized in that, The number of series circuits of the corresponding non-polar capacitor and adjustable inductor should be selected according to the ripple suppression order requirements.

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