CN203039653U - Filter of power supply input port of motor speed regulator - Google Patents
Filter of power supply input port of motor speed regulator Download PDFInfo
- Publication number
- CN203039653U CN203039653U CN 201220631065 CN201220631065U CN203039653U CN 203039653 U CN203039653 U CN 203039653U CN 201220631065 CN201220631065 CN 201220631065 CN 201220631065 U CN201220631065 U CN 201220631065U CN 203039653 U CN203039653 U CN 203039653U
- Authority
- CN
- China
- Prior art keywords
- pass filter
- filter circuit
- common mode
- low
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Filters And Equalizers (AREA)
Abstract
The utility model relates to a power supply filter, belongs to the electric and electronic technology field, and concretely relates to a filter of a power supply input port of a motor speed regulator. The filter is characterized by comprising a first-stage low-pass filter circuit, a second-stage low-pass filter circuit, a series connecting portion of the first-stage low-pass filter circuit and the second-stage low-pass filter circuit, and a shielding housing. The filter of the power supply input port of the motor speed regulator allows a dynamic performance index of a servo system to be guaranteed, enables a power supply input line of the motor speed regulator to meet requirements of conduction tests for industrial products/military use equipment, and is small in size. Moreover, the filter can adapt to power supply input ports of different types of motor speed regulators such as a frequency converter and a driver, and helps to solve problems about common impedance interference of the servo system to a common electrical network.
Description
Technical field
The utility model relates to a kind of power-supply filter, belongs to electric and electronic technical field, specifically a kind of filter of machine governor power input mouth.
Background technology
Frequency converter and driver are more and more extensively adopted by industry and military electronic system, be mainly used in electric machine speed regulation control and driving, but merger are machine governor series.Because machine governor is used for realizing the accurate control of servo system turned position, require output port voltage/current transient state corresponding speed fast, with the quick startup/pattern that quits work that adapts to motor, so the power input line of machine governor correspondingly should possess the characteristic of transmission power supply transient power.For suppressing power input line to the electromagnetic interference of the following frequency range of 30MHz that shares electrical network and cause, traditional method is design isolated transformer on power input line, method is the larger-size power-supply filter that contains differential mode inductance in the power input line design preferably, but these two kinds of methods all have certain defective: the former is relatively poor in the above inhibition ability of higher frequency band 100KHz, the conduction interference that can not adapt to most of industrial products power ports requires or the power line CE102 requirement of military equipment, secondly, volume increases with the electric current of power line, can't adapt to the machine governor to the volume requirement harshness; The latter is many can to cause the power input line pressure drop to increase, and the rotating torque of drive motors reduces, and makes the dynamic performance index of servo system be subjected to fatal influence.
Summary of the invention
The purpose of this utility model provides a kind of dynamic performance index that can guarantee servo system, can make the machine governor power input line satisfy the filter of the machine governor power input mouth with smaller size smaller of industrial products/military equipment conduction test requirement again.
To achieve these goals, the technical solution of the utility model is: a kind of filter of machine governor power input mouth, it is characterized in that: comprise first order low-pass filter circuit, second level low-pass filter circuit, first order low-pass filter circuit is connected by the serial connection line with second level low-pass filter circuit, and first order low-pass filter circuit and second level low-pass filter circuit are fixed in the shield shell.
Described first order low-pass filter circuit is to comprise a common mode inductance L1, a differential mode capacitor CX1, two common mode and differential mode interference filter circuits that common mode capacitance CY1 forms, differential mode interference suppresses passage and is made up of the leakage inductance of differential mode capacitor CX1, common mode inductance L1 and the equivalent capacity of two common mode capacitance CY1 series connection, realizes reflection and the bypass disturbed between line; Common mode disturbances suppresses passage and is made up of common mode inductance L1 and common mode capacitor C Y1, realizes that the reflection of disturbing on the line reaches bypass over the ground.
Described second level low-pass filter circuit is to comprise a common mode inductance L2, a differential mode capacitor CX2, two common mode and differential mode interference filter circuits that common mode capacitance CY2 forms.Differential mode interference suppresses passage and forms reflection and the bypass disturbed between the realization line by the equivalent capacity that the leakage inductance of common mode inductance L2 and differential mode capacitor CX2 and two common mode capacitance CY2 connect; Common mode disturbances suppresses passage and is made up of common mode inductance L1 and common mode capacitor C Y1, realizes that the reflection of disturbing on the line reaches bypass over the ground.
The serial connection of described two-stage low-pass filter circuit is the output L11 of first order low-pass filter circuit and the input L12 short circuit of second level low-pass filter circuit, the input N12 short circuit of the output N11 of first order low-pass filter circuit and second level low-pass filter circuit; Realization first order low-pass filter circuit is connected with the common code impedance mismatch with the differential mode impedance matching of second level low-pass filter circuit and is connected.
Described shield shell is the soldering that is coated with weldability metal shell and cover plate by the surface, and metal shell and cover plate connect by soldering and assemble; Realize that the assembling of circuit and the E point of first order low-pass filter circuit and second level low-pass filter circuit compile in the interference of shielding inner chamber, are connected releasing over the ground of disturbing on the realization line by housing outer surface with the earth;
The utility model has the advantages that to adapt to dissimilar machine governors, the dynamic performance index of dissimilar servo systems is protected; Make the machine governor power input line satisfy industrial products electromagnetic compatibility conduction interference test request or military equipment electromagnetic compatibility CE102 test request better simultaneously, solved servo system to sharing the common impedance disturbances problem of electrical network.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is machine governor input filter embodiment circuit diagram.
Fig. 2 is machine governor input filter embodiment shell structure figure.
Among the figure: 1, first order low-pass filter circuit; 2, second level low-pass filter circuit; 3, first order low-pass filter circuit and second level low-pass filter circuit is connected in series; 4, housing; 5, first order low-pass filter circuit LI/NI cable-through hole; 6, second level low-pass filter circuit L0/N0 cable-through hole; 7, cover plate.
Embodiment
As shown in Figure 1 and Figure 2, the filter of machine governor power input mouth, comprise first order low-pass filter circuit 1, second level low-pass filter circuit 2, first order low-pass filter circuit 1 is connected by serial connection line 3 with second level low-pass filter circuit 2, and first order low-pass filter circuit 1 and second level low-pass filter circuit 2 are fixed in the shield shell 4.
First order low-pass filter circuit 1 is to comprise a common mode inductance L1, a differential mode capacitor CX1, two common mode and differential mode interference filter circuits that common mode capacitance CY1 forms, differential mode interference suppresses passage and is made up of the leakage inductance of differential mode capacitor CX1, common mode inductance L1 and the equivalent capacity of two common mode capacitance CY1 series connection, realizes reflection and the bypass disturbed between line; Common mode disturbances suppresses passage and is made up of common mode inductance L1 and common mode capacitor C Y1, realizes that the reflection of disturbing on the line reaches bypass over the ground.
Second level low-pass filter circuit 2 is to comprise a common mode inductance L2, a differential mode capacitor CX2, two common mode and differential mode interference filter circuits that common mode capacitance CY2 forms.Differential mode interference suppresses passage and forms reflection and the bypass disturbed between the realization line by the equivalent capacity that the leakage inductance of common mode inductance L2 and differential mode capacitor CX2 and two common mode capacitance CY2 connect; Common mode disturbances suppresses passage and is made up of common mode inductance L1 and common mode capacitor C Y1, realizes that the reflection of disturbing on the line reaches bypass over the ground.
The serial connection 3 of two-stage low-pass filter circuit is the output L11 of first order low-pass filter circuit 1 and the input L12 short circuit of second level low-pass filter circuit 2, the input N12 short circuit of the output N11 of first order low-pass filter circuit 1 and second level low-pass filter circuit 2; Realization first order low-pass filter circuit 1 is connected with the common code impedance mismatch with the differential mode impedance matching of second level low-pass filter circuit 2 and is connected.
Shield shell Fig. 2 is the soldering that is coated with weldability metal shell 4 and cover plate 7 by the surface, and metal shell 4 and cover plate 7 connect by soldering and assemble.Realize that the assembling of circuit and the E point of first order low-pass filter circuit 1 and second level low-pass filter circuit 2 compile in the interference of shielding inner chamber, are connected releasing over the ground of disturbing on the realization line by housing outer surface with the earth; Realize the electromagnetic interference isolation between filter circuit and external environment condition simultaneously.
First order low-pass filter circuit comprises the C type of Passive LC device realization and differential mode filter circuit and the anti-τ type common mode filtering circuit of anti-τ type series combination; Second level low-pass filter circuit comprises anti-τ type differential mode filter circuit and the anti-τ type common mode filtering circuit that the Passive LC device is realized.
First order low-pass filter circuit and being connected in series of second level low-pass filter circuit comprise the short circuit of the input port of the output port of first order low-pass filter circuit and second level low-pass filter circuit.
The parts that present embodiment is not described in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (5)
1. the filter of a machine governor power input mouth, it is characterized in that: comprise first order low-pass filter circuit, second level low-pass filter circuit, first order low-pass filter circuit is connected by the serial connection line with second level low-pass filter circuit, and first order low-pass filter circuit and second level low-pass filter circuit are fixed in the shield shell.
2. the filter of machine governor power input mouth according to claim 1, it is characterized in that: described first order low-pass filter circuit is to comprise a common mode inductance L1, a differential mode capacitor CX1, two common mode and differential mode interference filter circuits that common mode capacitance CY1 forms, differential mode interference suppresses passage and is made up of the leakage inductance of differential mode capacitor CX1, common mode inductance L1 and the equivalent capacity of two common mode capacitance CY1 series connection, realizes reflection and the bypass disturbed between line; Common mode disturbances suppresses passage and is made up of common mode inductance L1 and common mode capacitor C Y1, realizes that the reflection of disturbing on the line reaches bypass over the ground.
3. the filter of machine governor power input mouth according to claim 1, it is characterized in that: described second level low-pass filter circuit is to comprise a common mode inductance L2, a differential mode capacitor CX2, two common mode and differential mode interference filter circuits that common mode capacitance CY2 forms, differential mode interference suppresses passage and forms reflection and the bypass disturbed between the realization line by the equivalent capacity that the leakage inductance of common mode inductance L2 and differential mode capacitor CX2 and two common mode capacitance CY2 connect; Common mode disturbances suppresses passage and is made up of common mode inductance L1 and common mode capacitor C Y1, realizes that the reflection of disturbing on the line reaches bypass over the ground.
4. the filter of machine governor power input mouth according to claim 1, it is characterized in that: the serial connection of described two-stage low-pass filter circuit is the output L11 of first order low-pass filter circuit and the input L12 short circuit of second level low-pass filter circuit, the input N12 short circuit of the output N11 of first order low-pass filter circuit and second level low-pass filter circuit; Realization first order low-pass filter circuit is connected with the common code impedance mismatch with the differential mode impedance matching of second level low-pass filter circuit and is connected.
5. the filter of machine governor power input mouth according to claim 1, it is characterized in that: described shield shell is the soldering that is coated with weldability metal shell and cover plate by the surface, and metal shell and cover plate connect by soldering and assemble; Realize that the assembling of circuit and the E point of first order low-pass filter circuit and second level low-pass filter circuit compile in the interference of shielding inner chamber, are connected releasing over the ground of disturbing on the realization line by housing outer surface with the earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631065 CN203039653U (en) | 2012-11-26 | 2012-11-26 | Filter of power supply input port of motor speed regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631065 CN203039653U (en) | 2012-11-26 | 2012-11-26 | Filter of power supply input port of motor speed regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039653U true CN203039653U (en) | 2013-07-03 |
Family
ID=48691738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220631065 Expired - Fee Related CN203039653U (en) | 2012-11-26 | 2012-11-26 | Filter of power supply input port of motor speed regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203039653U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375090A (en) * | 2015-12-09 | 2016-03-02 | 重庆大及电子科技有限公司 | Quickly mounted filter board |
| CN111313669A (en) * | 2020-04-03 | 2020-06-19 | 北京中科宇航技术有限公司 | Filter circuit of power supply in floating system |
-
2012
- 2012-11-26 CN CN 201220631065 patent/CN203039653U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375090A (en) * | 2015-12-09 | 2016-03-02 | 重庆大及电子科技有限公司 | Quickly mounted filter board |
| CN111313669A (en) * | 2020-04-03 | 2020-06-19 | 北京中科宇航技术有限公司 | Filter circuit of power supply in floating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102946238A (en) | Filter of power input port of motor speed controller | |
| CN104678189A (en) | EMI-filter-based electromagnetic interference noise measuring and suppressing system | |
| CN203039653U (en) | Filter of power supply input port of motor speed regulator | |
| CN203554278U (en) | A household electrical appliance and an EMI filter circuit thereof | |
| CN102590778B (en) | Control system for improving line impedance stabilizing network low-frequency sampling precision, and control method thereof | |
| CN209805677U (en) | Novel DC-DC switching power supply circuit | |
| CN219536040U (en) | Digital transmission antenna driving control filter device | |
| CN205377657U (en) | Secondary power supply converter with electromagnetic compatibility module | |
| CN115149515A (en) | Low-voltage power supply filter circuit and motor controller | |
| CN113078811B (en) | Low electromagnetic radiation power supply device for command vehicle communication equipment | |
| CN102087508A (en) | Intrinsically safe isolating explosion-proof type analog quantity output system | |
| CN202693002U (en) | Two-wire system transmitter and anti-jamming circuit thereof | |
| CN111327192A (en) | Power module parallel output control system | |
| CN202471948U (en) | Control system capable of improving low-frequency sampling accuracy of line impedance stabilization network | |
| CN206004394U (en) | Redundant power module circuit | |
| CN213547462U (en) | Filtering system | |
| CN210514514U (en) | Small signal acquisition circuit applied to power distribution terminal | |
| CN209895180U (en) | Vehicle control unit hardware function detects frock | |
| CN218183058U (en) | Single-interface compatible input and output power supply circuit and power supply system | |
| CN201594791U (en) | Power panel EMC filter circuit and TV adopting same | |
| CN206673849U (en) | The high-performance electric source module that nuclear power station reactor core Nuclear measurement system uses | |
| CN221202522U (en) | Filter circuit of motor controller | |
| CN203632538U (en) | Isolation direct-current power supply filtering module | |
| CN103904890B (en) | A kind of high temperature DC/DC power module | |
| CN218897210U (en) | Low-frequency filter circuit of photoelectric signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20141126 |
|
| EXPY | Termination of patent right or utility model |