CN202218017U

CN202218017U - Phase-shifting magnetic filter

Info

Publication number: CN202218017U
Application number: CN2011203344597U
Authority: CN
Inventors: 罗扶满
Original assignee: SHENZHEN XINHENGJI ELECTRIC CO Ltd
Current assignee: SHENZHEN XINHENGJI ELECTRIC CO Ltd
Priority date: 2011-09-07
Filing date: 2011-09-07
Publication date: 2012-05-09
Anticipated expiration: 2021-09-07

Abstract

The utility model discloses a phase-shifting magnetic filter aiming at providing a phase-shifting magnetic filter for filtering harmonic waves in an electrical system. The phase-shifting magnetic filter consists of three-phase iron cores, a shell and coils, wherein the three-phase iron cores are arranged linearly; the surface of the shell is provided with a plurality of wiring ports; the coils are wound on the three-phase iron cores; the wiring ports for connecting all branched coils adopt a phase-shifting connection method, and do not play a role in increasing or decreasing voltage by changing directions of all subharmonic waves for generating fluxes in the iron cores only at an angle suitable for low voltage and current; but the fluxes generated for all the subharmonic waves are offset in the same iron core, so that the phase-shifting magnetic filter plays a role in filtering the harmonic waves.

Description

Phase shift magnetic filter device

Technical field

The utility model relates to a kind of filter, the phase shift magnetic filter device in particularly a kind of using electricity system.

Background technology

Conventional harmonic wave management method is the LC filter and two kinds in electric power source filter is arranged.

The LC filter is the Traditional passive harmonic suppression apparatus, is formed by filtering capacitor, reactor and resistor appropriate combination, and is parallelly connected with harmonic source, except that strobing, also takes into account the needs of reactive power compensation; This filter occurs the earliest, and cost is lower, but has some more formidable shortcomings simultaneously, such as being directed against single harmonic component, is easy to generate harmonic resonance, causes the equipment damage, along with the time resonance point can drift about, causes the harmonic filtration effect worse and worse; Simultaneously, this mode can't cope with transients, surge and high order harmonic component, has energy-conservation leak.

Active Power Filter-APF; It is a kind of power electronic equipment; Its basic principle is from target compensation, to detect harmonic current, produces one with this harmonic current equal and opposite in direction and opposite polarity offset current by compensation arrangement, thereby makes power network current only contain fundametal compoment; This filter can be followed the tracks of compensation to the harmonic wave that frequency and amplitude all change, and compensation characteristic do not receive the influence of electric network impedance, thereby receives widely and paying attention to, and obtains extensive use in states such as Japan; But Active Power Filter-APF is with high costs, costs an arm and a leg, and the investment repayment phase is long, and most of enterprises are difficult to bear.

Summary of the invention

The purpose of the utility model is to overcome deficiency of the prior art, can provide a kind of simple in structure, be easy to safeguard, inexpensive, be used for the phase shift magnetic filter device of the harmonic wave in the filtering using electricity system.

The utility model is realized through following technical scheme, a kind of phase shift magnetic filter device, comprise three iron cores, respectively be wrapped in three on the iron core coil, connect the yoke of three iron core tops and bottom respectively; Its improvements are that it also includes a housing, and described three iron cores are to be arranged in a linear.

Do further to set forth in the face of above technical scheme down:

Preferably, described housing one side surface has a plurality of Wiring ports;

Preferably, described coil has a plurality of sub-coils of connecting by end of the same name or non-same polarity of being used for, and the two ends end to end of sub-coil are corresponding respectively is connected on the Wiring port of surface of shell;

Preferably, described iron core quantity can also be more than three;

Preferably, described iron core column center is provided with air gap.

Compared with prior art; The novel beneficial effect of this use is: the first does not contain capacitor; There are not parallel connection or series resonance; Also cause the damage of equipment, the phenomenon of harmonic filtration deleterious also can not occur causing, strengthened the stability and the reliability of system's operation along with the drift of resonance point with regard to not producing harmonic resonance; It two is without the compensating reactive power electric current, avoids not having merits and demerits and mends phenomenon, has practiced thrift electric energy, has reduced the loss of equipment; It three is similar reactor structures, itself has very high reliability and useful life, so can non-maintainingly move; It four is to have increased substantially the quality of power supply, has improved the stability and the reliability of equipment; Its five be itself the power consumption low, no electromagnetic pollution, the operation noise low; Its six be Wiring port on the housing entirely in a side of housing, make simple to operately, connected mode is simple and clear, helps to safeguard.

Description of drawings

Fig. 1 is the phase shift magnetic filter device structural representation of the utility model;

Fig. 2 is the phase shift magnetic filter device structural representation that the utlity model has five iron cores;

Fig. 3 is the novel housing schematic appearance of this use;

Fig. 4 is the three-phase wiring schematic diagram of the utility model;

Among the figure: 1, iron core; 2, housing; 3, coil; 4, Wiring port.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in Figure 1, the phase shift magnetic filter device of the utility model comprises: three iron cores that are arranged in a linear 1, and these three iron cores 1 also are known as tri-phase iron core usually; Surface one side has the housing 2 of a plurality of Wiring ports; Be wrapped in the coil 3 on said three iron cores 1 respectively.

The coil 3 that twines on each iron core 1 has a plurality of sub-coils that are used for by end of the same name or non-same polarity connection respectively, and 5 sub-coils are arranged on each iron core that shows among Fig. 1; The technological process of production of the phase shift magnetic filter device of the utility model is identical with the reactor with T-shaped core technological process, and core structure is also the same with reactor, and each iron core column center all is provided with air gap, increases leakage field, to improve the linearity.

In the phase shift magnetic filter device of the utility model is formed, normally by 1 assembling of three iron cores, but, can also select iron core 1 assembling more than three as the case may be as selecting, as shown in Figure 2, assemble by five iron cores 1.

As shown in Figure 3, a side surface of housing 1 has a plurality of Wiring port 4, these Wiring ports in housing with iron core on the corresponding connection in two ends end to end of each sub-coil; Outside housing, adopt phase-moving method to be connected; Can show its connected mode more intuitively, make simple to operately, be convenient to safeguard.

As shown in Figure 4, when carrying out harmonic filtration, can be according to different phase shift angles; With the Wiring port 4 of phase-moving method through connection each coil end of the same name or non-same polarity correspondence; Change each harmonic produces magnetic flux in iron core direction, be fit to the very little angle of voltage and current, do not play the perhaps effect of step-down of boosting as long as change; But the magnetic flux that each harmonic is produced offsets in same core interior, plays the effect of filtering harmonic.

In sum, the phase shift magnetic filter device of the utility model is made up of with the housing 2 of a plurality of Wiring ports, the coil 3 that is wrapped on the tri-phase iron core the tri-phase iron core that is arranged in a linear 1, surface.The Wiring port that connects each sub-coil adopts phase shift to connect method, and like this, the different phase shifting angle of harmonic wave design to different passages can obtain better filter effect.

The phase shift magnetic filter device of the utility model also can improve the stability and the reliability of equipment except that the filtering line harmonic, strengthened the antisurge of equipment, the ability of transition infringement; Improved the electric power quality; Reduced equipment loss, practiced thrift electric energy, cost is controlled effectively; Power consumption equipment there is protective effect, has prolonged the useful life of equipment.

According to the announcement and the instruction of above-mentioned specification, those skilled in the art in the invention can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection range of claim of the present invention modifications more of the present invention and change.In addition, although used some specific terms in this specification, these terms are explanation for ease just, the present invention is not constituted any restriction.

Claims

1. phase shift magnetic filter device, comprise three iron cores, respectively be wrapped in three on the iron core coil, connect the yoke of three iron core tops and bottom respectively; It is characterized in that: it also includes a housing, and described three iron cores are to be arranged in a linear.

2. phase shift magnetic filter device according to claim 1 is characterized in that: described housing one side surface has a plurality of Wiring ports.

3. phase shift magnetic filter device according to claim 1 and 2 is characterized in that: described coil has a plurality of sub-coils of connecting by end of the same name or non-same polarity of being used for, and the two ends end to end of sub-coil are corresponding respectively is connected on the Wiring port of surface of shell.

4. phase shift magnetic filter device according to claim 1 is characterized in that: described iron core quantity can also be more than three.

5. phase shift magnetic filter device according to claim 1 is characterized in that: described iron core column center is provided with air gap.