CN201134784Y - Frequency-changing speed-regulating apparatus of rotor based on active filtering technique - Google Patents
Frequency-changing speed-regulating apparatus of rotor based on active filtering technique Download PDFInfo
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- CN201134784Y CN201134784Y CNU200720099598XU CN200720099598U CN201134784Y CN 201134784 Y CN201134784 Y CN 201134784Y CN U200720099598X U CNU200720099598X U CN U200720099598XU CN 200720099598 U CN200720099598 U CN 200720099598U CN 201134784 Y CN201134784 Y CN 201134784Y
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- frequency conversion
- conversion speed
- rotor frequency
- adjusting device
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Abstract
The utility model relates to a rotor frequency conversion speed-regulating device, which is based on the active filter technique, a main circuit part is the rotor frequency conversion speed-regulating device, the rotor frequency conversion speed-regulating device is connected with a control inner-feeding motor, and an inverter in the rotor frequency conversion speed-regulating device is applied in the control technique which is based on the active filter technique. The speed-regulating device has the beneficial effects that low order harmonic wave of rotor electric current in a high voltage motor is basically eliminated through the application of the active filter technique in the rotor frequency conversion speed-regulating device and the problems of motor vibration and the like which are caused by the low order harmonic wave are improved.
Description
Technical field
The utility model belongs to the motor variable-frequency speed-regulating device, particularly a kind of rotor frequency conversion speed-adjusting device based on the active power filtering technology.
Background technology
Though the rotor frequency conversion speed-adjusting device adopts the full-control type inverter of PWM control, reduced in the past owing to adopt shortcomings such as the power factor that the thyristor active inverter produced of phased approach is low, harmonic wave is big, but because rotor-side still adopts diode rectification, make the current waveform of diode rectification AC side (being the rotor side) be approximately trapezoidal, contain subharmonic such as 5,7,11,13, these harmonic waves are reflected in the stator by air-gap field, bring low-frequency harmonics to stator current.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of rotor frequency conversion speed-adjusting device based on the active power filtering technology is provided.By of the application of active power filtering technology at the rotor frequency conversion speed-adjusting device, eliminate the low-order harmonic of stator current in the high-voltage motor substantially, improve the problems such as motor vibrations that cause thus.
The technical solution of the utility model is:
A kind of rotor frequency conversion speed-adjusting device based on the active power filtering technology, it is characterized in that: main circuit partly is the rotor frequency conversion speed-adjusting device, the rotor frequency conversion speed-adjusting device connects feed machine in the control, wherein in the rotor frequency conversion speed-adjusting device inverter connect control circuit part based on the active power filtering technology.
Main circuit partly connects: rectifier is arranged, and the rectifier copped wave pipe that is connected in parallel, copped wave Guan Yiduan connects capacitor one end by diode,, the copped wave pipe other end connects the capacitor other end, and the capacitor two ends also connect inverter, feed machine stator in inverter connects.
The control circuit of source filtering technique that is connected the inverter of rotor frequency conversion speed-adjusting device partly is: the stator current of interior feed machine connects harmonic detector, and the output of harmonic detector two ends is connected the output two ends and the three-phase PWM controller of electric current setter; The three-phase PWM controller connects the feedback electric current from motor, and the output of three-phase PWM controller connects the inverter of rotor frequency conversion speed-adjusting device.
The utility model effect is:
By of the application of active power filtering technology at the rotor frequency conversion speed-adjusting device, eliminate the low-order harmonic of stator current in the high-voltage motor substantially, improve the problems such as motor vibrations that cause thus.
Description of drawings
Fig. 1 is based on the structural representation of the rotor frequency conversion speed-adjusting device of active power filtering technology
Embodiment
A kind of as shown in Figure 1 rotor frequency conversion speed-adjusting device based on the active power filtering technology, main circuit partly is the rotor frequency conversion speed-adjusting device, the rotor frequency conversion speed-adjusting device connects feed machine in the control, and wherein the inverter applications in the rotor frequency conversion speed-adjusting device is based on the control technology of active power filtering technology.
Wherein the inverter applications in the rotor frequency conversion speed-adjusting device is based on the control technology of active power filtering technology.
Main circuit partly connects: rectifier is arranged, and the rectifier copped wave pipe that is connected in parallel, copped wave Guan Yiduan connects capacitor one end by diode,, the copped wave pipe other end connects the capacitor other end, and the capacitor two ends also connect inverter, feed machine stator in inverter connects.
The control circuit of source filtering technique that is connected the inverter of rotor frequency conversion speed-adjusting device partly is: the stator current of interior feed machine connects harmonic detector, and the output of harmonic detector two ends is connected the output two ends and the three-phase PWM controller of electric current setter; The three-phase PWM controller connects the feedback electric current from motor, and the output of three-phase PWM controller connects the inverter of rotor frequency conversion speed-adjusting device.
Above system is divided into two parts, and main circuit partly is the rotor frequency conversion speed-adjusting device, the internal feed machine of controlling object, and the bottom is divided into the control circuit part based on the active power filtering technology.The embodiment example is the employed rotor frequency conversion speed-adjusting device of initiative Liu Cun water factory of Qinhuangdao Running-water Company of group.
Claims (3)
1, a kind of rotor frequency conversion speed-adjusting device based on the active power filtering technology, it is characterized in that: main circuit partly is the rotor frequency conversion speed-adjusting device, the rotor frequency conversion speed-adjusting device connects feed machine in the control, wherein in the rotor frequency conversion speed-adjusting device inverter connect control circuit part based on the active power filtering technology.
2, the rotor frequency conversion speed-adjusting device based on the active power filtering technology according to claim 1, it is characterized in that: main circuit partly connects: rectifier is arranged, the rectifier copped wave pipe that is connected in parallel, copped wave Guan Yiduan connects capacitor one end by diode, the copped wave pipe other end connects the capacitor other end, and the capacitor two ends also connect inverter, feed machine feedback winding in inverter connects.
3, the rotor frequency conversion speed-adjusting device based on the active power filtering technology according to claim 1, it is characterized in that: the control circuit that is connected the active power filtering technology of the inverter in the rotor frequency conversion speed-adjusting device partly is: the stator current of interior feed machine connects harmonic detector, and the output of harmonic detector two ends is connected the output two ends and the three-phase PWM controller of electric current setter; The three-phase PWM controller connects the feedback electric current from motor, and the output of three-phase PWM controller connects the inverter of rotor frequency conversion speed-adjusting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720099598XU CN201134784Y (en) | 2007-12-26 | 2007-12-26 | Frequency-changing speed-regulating apparatus of rotor based on active filtering technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720099598XU CN201134784Y (en) | 2007-12-26 | 2007-12-26 | Frequency-changing speed-regulating apparatus of rotor based on active filtering technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201134784Y true CN201134784Y (en) | 2008-10-15 |
Family
ID=40063054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720099598XU Expired - Fee Related CN201134784Y (en) | 2007-12-26 | 2007-12-26 | Frequency-changing speed-regulating apparatus of rotor based on active filtering technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201134784Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779871A (en) * | 2012-10-18 | 2014-05-07 | Ifp新能源公司 | Continuous-power electrical system stabilized by integrated active filters |
-
2007
- 2007-12-26 CN CNU200720099598XU patent/CN201134784Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779871A (en) * | 2012-10-18 | 2014-05-07 | Ifp新能源公司 | Continuous-power electrical system stabilized by integrated active filters |
| CN103779871B (en) * | 2012-10-18 | 2017-11-17 | Ifp新能源公司 | Pass through the continuous power electrical system that the active filter of integration is stable |
| US10468877B2 (en) | 2012-10-18 | 2019-11-05 | IFP Energies Nouvelles | Continuous-power electrical system stabilized by integrated active filters |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20100126 |