CN202340186U - Dead-time voltage distortion correction circuit for spindle driving power supply of numerical control machine tool - Google Patents
Dead-time voltage distortion correction circuit for spindle driving power supply of numerical control machine tool Download PDFInfo
- Publication number
- CN202340186U CN202340186U CN2011204751105U CN201120475110U CN202340186U CN 202340186 U CN202340186 U CN 202340186U CN 2011204751105 U CN2011204751105 U CN 2011204751105U CN 201120475110 U CN201120475110 U CN 201120475110U CN 202340186 U CN202340186 U CN 202340186U
- Authority
- CN
- China
- Prior art keywords
- rectifier
- electrically connected
- driving power
- machine tool
- numerical control
- 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
Abstract
The utility model discloses a dead-time voltage distortion correction circuit for a spindle driving power supply of a numerical control machine tool, which comprises a rectifier electrically connected with a power grid, an inverter electrically connected with the direct current side of the rectifier and used for supplying electricity to a motor, a microprogrammed control unit (MCU) with a man-machine interface, a driving circuit electrically connected with the inverter and used for controlling operation of the motor, a voltage detector adopting a high speed Hall sensor and arranged on the direct current side of the rectifier, a digital signal processor (DSP) microprocessor is connected between the MCU and the driving circuit in series, and the output end of the voltage detector is respectively and electrically connected with the MCU and the DSP microprocessor. The dead-time voltage distortion correction circuit for the spindle driving power supply of the numerical control machine tool can correct voltage distortion at dead time, and can obtain 1:1 output voltage even if a driving power supply is operated at the highest frequency.
Description
Technical field
The utility model relates to the main shaft drives power supply of Digit Control Machine Tool, especially a kind of Dead Time voltage distortion correcting circuit of ultra-speed precise main shaft of numerical control machine tool driving power.
Background technology
As PWM (Pulse Width Modulation; Pulse width modulation; Be called for short pulse-width modulation) during the electronic switching element of timer drive inverse bridge; Two electronic switching elements can not be open-minded simultaneously up and down in the same brachium pontis of essential assurance inverter bridge, otherwise can cause the short circuit of DC side main circuit, inserting a time of delay between two pulse signals up and down usually for this reason.Up and down two electronic switching elements are all not open-minded in this time, Here it is so-called Dead Time.This time is generally very short, and such as 5 μ s, when the modulating frequency of PWM was low, such as 2 KHz, the switch periods of this moment was 500 μ s, and the voltage distortion that Dead Time causes is only with regard to 1%, and not obvious; But when modulating frequency was higher, such as 20 KHz, the switch periods of this moment was 50 μ s, and at this moment only the loss of voltage just surpasses 10%, also can cause the distortion of voltage waveform, so must proofread and correct output voltage.
The utility model content
The purpose of the utility model is: a kind of Dead Time voltage distortion correcting circuit of main shaft of numerical control machine tool driving power is provided, can proofreaies and correct the voltage distortion of Dead Time, even if this driving power is operated in highest frequency, also can obtain 1 to 1 output voltage.
For realizing above-mentioned purpose, the utility model can be taked following technical proposals:
The Dead Time voltage distortion correcting circuit of a kind of main shaft of numerical control machine tool driving power of the utility model; Comprise the rectifier that is electrically connected with electrical network, the inverter that is used to the motor power supply that is electrically connected with the rectifier DC side, have the MCU micro-control unit of man-machine interface and be electrically connected the drive circuit that is used to control motor rotation with inverter; Also be provided with the voltage detector that adopts the high speed Hall sensor in the rectifier DC side; Between MCU micro-control unit and drive circuit, be serially connected with the DSP microprocessor, the output of said voltage detector is electrically connected with MCU micro-control unit and DSP microprocessor respectively.
The rectifier DC side is parallel with one group big capacity filter capacitor, is used to improve power factor, reduces the infringement to electrical network; Between the positive pole of said big capacity filter capacitor and rectifier, be serially connected with current-limiting resistance; Be used to limit the charging current of powered on moment to this big capacity filter capacitor; Said current-limiting resistance two ends also are connected to relay, after big capacity filter capacitor charging finishes, and said relay adhesive.
Compared with prior art the beneficial effect of the utility model is: adopt technique scheme; Utilize the detected voltage data of said voltage detector, the MCU micro-control unit carries out harmonic analysis to the loss of voltage that Dead Time causes, when calculating output voltage; Through DSP microprocessor, drive circuit; To the voltage compensation of inverter adding particular harmonic, proofread and correct the voltage distortion of Dead Time, obtain 1 to 1 output voltage; Detect simultaneously SPWM (Sinusoidal PWM be a kind of comparative maturity, with pulse duration change by sinusoidal rule and and the PWM waveform of sinusoidal wave equivalence be the break-make that the SPWM waveform is controlled electronic switching element in the inverter circuit; The area of the pulse voltage of its output is equated with the area of sine wave in respective bins of hope output; Through changing modulation wave frequency and the amplitude then frequency and the amplitude of scalable inverter circuit output voltage) small-pulse effect that produces in the modulated process; To force cancellation less than the burst pulse of 0.5 μ s; Because these small-pulse effects are to output acting hardly; So not only improve output voltage effectively, also reduced the switch number of times of power switch, protected power model.
The utility model can be used for all ultra-speed precise main shaft of numerical control machine tool driving powers that use Dead Time voltage distortion alignment technique.
Description of drawings
Fig. 1 is the electrical block diagram of the utility model.
Embodiment
As shown in Figure 1; The Dead Time voltage distortion correcting circuit of a kind of main shaft of numerical control machine tool driving power of the utility model; Comprise the rectifier 1 that is electrically connected with electrical network, the inverter 3 that is used to motor 2 power supplies that is electrically connected with rectifier 1 DC side, have the MCU micro-control unit 5 of man-machine interface 4 and is electrically connected and be used to control the drive circuit 6 that motor 2 turns round with inverter 3; Also be provided with the voltage detector 9 that adopts the high speed Hall sensor at rectifier 1 DC side; Between MCU micro-control unit 5 and drive circuit 6, be serially connected with DSP microprocessor 8, the output of said voltage detector 9 is electrically connected with MCU micro-control unit 5 and DSP microprocessor 8 respectively.
In order to improve power factor, reduce infringement to electrical network, rectifier 1 DC side parallel has one group big capacity filter capacitor C, is used to improve power factor, reduces the infringement to electrical network; Between the positive pole of said big capacity filter capacitor C and rectifier 1, be serially connected with current-limiting resistance R; Be used to limit the charging current of powered on moment to this big capacity filter capacitor C; Said current-limiting resistance R two ends also are connected to relay J; After big capacity filter capacitor C charging finished, said relay J adhesive also can adopt the mode of time-delay let the automatic adhesive of relay.
Claims (2)
1. the Dead Time voltage distortion correcting circuit of a main shaft of numerical control machine tool driving power; Comprise the rectifier (1) that is electrically connected with electrical network, the inverter (3) that is used to motor (2) power supply that is electrically connected with rectifier (1) DC side, have the MCU micro-control unit (5) of man-machine interface (4) and is electrically connected and be used to control the drive circuit (6) that motor (2) turns round with inverter (3); It is characterized in that: also be provided with the voltage detector (9) that adopts the high speed Hall sensor at rectifier (1) DC side; Between MCU micro-control unit (5) and drive circuit (6), be serially connected with DSP microprocessor (8), the output of said voltage detector (9) is electrically connected with MCU micro-control unit (5) and DSP microprocessor (8) respectively.
2. the Dead Time voltage distortion correcting circuit of main shaft of numerical control machine tool driving power according to claim 1; It is characterized in that: rectifier (1) DC side parallel has one group big capacity filter capacitor (C); Be used to improve power factor, reduce infringement electrical network; Between the positive pole of said big capacity filter capacitor (C) and rectifier (1), be serially connected with current-limiting resistance (R); Be used to limit the charging current of powered on moment to this big capacity filter capacitor (C); Said current-limiting resistance (R) two ends also are connected to relay (J); After big capacity filter capacitor (C) charging finishes, said relay (J) adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204751105U CN202340186U (en) | 2011-11-25 | 2011-11-25 | Dead-time voltage distortion correction circuit for spindle driving power supply of numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204751105U CN202340186U (en) | 2011-11-25 | 2011-11-25 | Dead-time voltage distortion correction circuit for spindle driving power supply of numerical control machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202340186U true CN202340186U (en) | 2012-07-18 |
Family
ID=46488873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204751105U Expired - Fee Related CN202340186U (en) | 2011-11-25 | 2011-11-25 | Dead-time voltage distortion correction circuit for spindle driving power supply of numerical control machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202340186U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386758A (en) * | 2011-11-25 | 2012-03-21 | 绍兴文理学院 | Circuit for correcting dead time voltage distortion of numerical control machine spindle driving power supply |
| CN104281100A (en) * | 2013-07-02 | 2015-01-14 | 北京耐威徐激光技术开发有限责任公司 | Integrated numerical control system for numerical control equipment |
| CN104656546A (en) * | 2013-11-25 | 2015-05-27 | 北京耐威徐激光技术开发有限责任公司 | Integrated numerical control system applied to numerical control device |
| CN105811372A (en) * | 2016-03-31 | 2016-07-27 | 广东美的环境电器制造有限公司 | Motor protection circuit and circuit based method for calibrating optimal dead time |
-
2011
- 2011-11-25 CN CN2011204751105U patent/CN202340186U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386758A (en) * | 2011-11-25 | 2012-03-21 | 绍兴文理学院 | Circuit for correcting dead time voltage distortion of numerical control machine spindle driving power supply |
| CN104281100A (en) * | 2013-07-02 | 2015-01-14 | 北京耐威徐激光技术开发有限责任公司 | Integrated numerical control system for numerical control equipment |
| CN104656546A (en) * | 2013-11-25 | 2015-05-27 | 北京耐威徐激光技术开发有限责任公司 | Integrated numerical control system applied to numerical control device |
| CN105811372A (en) * | 2016-03-31 | 2016-07-27 | 广东美的环境电器制造有限公司 | Motor protection circuit and circuit based method for calibrating optimal dead time |
| CN105811372B (en) * | 2016-03-31 | 2018-07-17 | 广东美的环境电器制造有限公司 | A kind of motor protective circuit and the method that optimal dead time is calibrated based on the circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202340186U (en) | Dead-time voltage distortion correction circuit for spindle driving power supply of numerical control machine tool | |
| CN201918945U (en) | Single-Hall control device for direct-current brushless motor | |
| CN203675385U (en) | LED backlight driving circuit capable of automatically adjusting switching frequency | |
| AU2012327188B2 (en) | Inverter circuit and control method of inverter circuit, inverter circuit control device | |
| CN204043127U (en) | PV air-conditioner system | |
| CN201985777U (en) | High-voltage high-power switching power amplifier | |
| CN105162348A (en) | STM32-based high-performance all-digital sine wave inverter power supply | |
| CN103607160B (en) | A kind of Current cut control device and implementation method | |
| CN204886754U (en) | Sinusoidal wave current drive's single coil DC Brushless motor drive integrated circuit | |
| CN202918213U (en) | Novel inverter | |
| CN203251260U (en) | Brushless DC motor power conversion circuit | |
| GB2460192A (en) | Determining average current drawn by a motor | |
| CN204644703U (en) | A kind of energy-saving control circuit for washing machine and washing machine | |
| CN103269113B (en) | Low-voltage electromobile driving governor and charging method | |
| CN102386758A (en) | Circuit for correcting dead time voltage distortion of numerical control machine spindle driving power supply | |
| CN102355039B (en) | Totally-digitalized high-efficient multi-frequency quick charging power supply | |
| CN204639420U (en) | High medium frequency inverter resistance welding power source | |
| CN205241009U (en) | Elevator energy feedback device | |
| CN203086357U (en) | A DC power supply with variable switching operating frequency | |
| CN202163990U (en) | Feedback power-conservation optimizing control device for frequency-variable elevator | |
| CN202143022U (en) | High power brushless DC motor control device for well-drilling winch in oil field | |
| CN102025158B (en) | Directly-coupled series compensation device and compensation method thereof | |
| CN104993744A (en) | Single-coil direct-current brushless motor driving integrated circuit driven by sine wave current | |
| CN204650336U (en) | A kind of frequency converter control panel debug circuit | |
| CN102684536A (en) | Power unit dead-time compensation method for high-voltage frequency changing speed controller |
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: 20120718 Termination date: 20151125 |