CN201750344U - Three-phase AC induction motor frequency converter for automatic expanding door - Google Patents
Three-phase AC induction motor frequency converter for automatic expanding door Download PDFInfo
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- CN201750344U CN201750344U CN2009202620982U CN200920262098U CN201750344U CN 201750344 U CN201750344 U CN 201750344U CN 2009202620982 U CN2009202620982 U CN 2009202620982U CN 200920262098 U CN200920262098 U CN 200920262098U CN 201750344 U CN201750344 U CN 201750344U
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Abstract
The utility model relates to the field of an automatic expanding door, in particular to a three-phase alternating current (AC) induction motor frequency converter for the automatic expanding door. The three-phase AC induction motor frequency converter for the automatic expanding door comprises a main control central processing unit (CPU) and an AC power supply. A rectification filter circuit is arranged between the main control CPU and the AC power supply. The main control CPU is also respectively connected with a voltage sampling module, a current sampling module, a current detection module, a temperature detection module and a pumping limit module. The main control CPU is also connected with a driving circuit. A pulse-width modulation (PWM) controller is arranged between the main control CPU and the driving circuit. The main control CPU is also provided with a display module, an interface and a set module. The three-phase AC induction motor frequency converter for the automatic expanding door has the advantage of main method of saving electricity and improving process flow currently for improving product performance, protecting the environment and promoting technological progress, is universally known as the most potential speed adjusting mode at home and abroad due to the advantages of excellent speed adjustment and starting and braking performance, high efficiency, high power, effect of saving the electricity, wide application range and the like, and has very positive significance.
Description
Technical field
The utility model relates to automatic retractable door field, refers more particularly to a kind of three phase AC induction machine frequency converter that is used for automatic retractable door.
Background technology
Along with development of times, the gate industry of China also develops rapidly.Automatically-controlled door, automatic retractable door, the automatic retractable door of trackless etc. all progressively grow up, and participate in the middle of whole vigorous China Reconstructs's cause.And after the application converter technique, not only environmental protection and energy saving, but also well behaved robot of new generation door control system be for all automatic door control system markets update and surging competition one sharp sword.That is to say where automatically-controlled door is applied to, where the market of robot door control system is just arranged.
But along with the continuous development of production technology, the weak link that robot door control system direct current drags progressively reveals.Because the existence of commutator, the maintenance of direct current machine strengthens, and single-machine capacity, maximum speed and environment for use all are restricted.People begin simple, reliable, easy to maintenance, the cheap asynchronous motor of steering structure.But the speed adjusting performance of asynchronous motor is difficult to meet the needs of production.At present, AC speed regulating has entered the epoch that progressively replace DC speed regulation.In automatic retractable door industry, this change is imperative.
Based on the weak point of above-mentioned existing robot door control system, the inventor has designed the utility model " a kind of three phase AC induction machine frequency converter that is used for automatic retractable door ".
The utility model content
The utility model at above-mentioned the deficiencies in the prior art technical problem to be solved is: a kind of three phase AC induction machine frequency converter that is used for automatic retractable door is provided.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of three phase AC induction machine frequency converter that is used for automatic retractable door, comprise governor circuit and AC power, be provided with current rectifying and wave filtering circuit between described master cpu and the AC power, master cpu also is provided with the voltage sample module respectively, the current sample module, current detection module, temperature detecting module, pump ceiling molding piece, master cpu also is provided with drive circuit, be provided with the PWM controller between master cpu and the drive circuit, current rectifying and wave filtering circuit changes into direct current with civil power, produce frequency conversion PWM waveform through master cpu and PWM controller again, be reverse into the alternating current that the three-phase phase angle becomes 120 degree by drive circuit and inverter then, wherein master cpu periodic sampling electric current and Voltage Feedback, carry out control corresponding, and pump rises control, master cpu also is provided with display module, interface and setting module, the major parameter of frequency converter and and control flow be provided with by unified man-machine interface display module and interface.
Described AC power is single phase alternating current power supply or three-phase alternating-current supply.
The robot door control system is mainly by reducing gear. and three phase AC induction machine controller, three phase AC induction machine and a door body are formed.The three phase AC induction machine controller generally is made up of rectifier, filter, drive circuit, protective circuit and main control circuit parts such as (MCU/DSP).At first with single-phase or three-phase alternating-current supply by rectifier and behind capacitor filtering, the direct voltage that forms the amplitude basic fixed is added on the inverter, utilizes the break-make control of inverter power element, makes inverter output end obtain the rectangular pulse waveform of definite shape., control its voltage magnitude here, change and control its output frequency modulation period, thereby on inverter, carry out the control of output voltage and frequency simultaneously, satisfy control is coordinated in frequency control to U/f requirement by the width that changes rectangular pulse.The advantage of PWM is can eliminate or suppress low-order harmonic, and load motor is moved under nearly sinusoidal wave alternating voltage, and torque pulse is little, speed-regulating range width.
The speed governing of three phase AC induction machine controller is to adopt the PWM control mode, and motor speed is subjected to the restriction of upper limit rotating speed.As to the retractable door motor, generally be no more than 7000r/min.And adopt the compressor rotary speed of PAM control mode can improve about 1.5 times, improved quick speedup and slowing down power(SDP) so greatly.Simultaneously, because PAM has the shaping operation to current waveform when adjusting voltage, thereby can obtain the efficient higher than PWM.In addition, aspect anti-interference, the incomparable superiority of PWM is arranged also, can suppress the generation of high order harmonic component, reduce pollution electrical network.After adopting the variable-frequency control technique of this control mode, the motor stator electric current descends 64%, and supply frequency reduces by 30%.By electric machine theory as can be known, the rotating speed of asynchronous machine can be expressed as: N=60f/p (1-s)
Wherein f is motor stator frequency (that is to say mains frequency), the winding number of pole-pairs of P motor stator, and s is a revolutional slip.By following formula as can be known, as long as revolutional slip is not too big, can be similar to and thinks that rotation speed n is directly proportional with fs, this just means that continuously smooth ground changes supply frequency, just can realize the large-scale continuously smooth speed governing of alternating current motor.The motor of 3000 rev/mins of rated speeds for example, by the three phase AC induction machine inverter supply, if starting frequency setting is 5Hz, the three phase AC induction machine frequency converter may operate on arbitrary frequency between the 5-50Hz so, then motor may operate in that motor is started by civil power on arbitrary rotating speed between 300～3000 rev/mins, start balance, moment is energy-conservation greatly again.
Become direct current after the civil power process rectifying and wave-filtering link of 50Hz380V, become frequency and all adjustable alternating current of amplitude through the inversion link again.Electric energy has passed through the conversion of AC-DC-interchange in three phase AC induction machine frequency converter major loop, so this class three phase AC induction machine frequency converter is called AC-DC-AC class three-phase alternating current induction asynchronous machine frequency converter.
A kind of beneficial effect that is used for the three phase AC induction machine frequency converter of automatic retractable door of the utility model is:
The automatic retractable door of band three phase AC induction machine frequency converter is a great breakthrough of electronic technology development in recent years and retractable door industry development.The utility model is used the three phase AC induction machine variable-frequency control technique, is current economize on electricity, improves technological process to enhance product performance and to protect environment, promote a kind of main means of technological progress.The three phase AC induction machine frequency control is with its excellent speed governing and play braking ability, high efficiency, high power and power savings, the scope of application and other many advantages and be known as the most rising mode of speed regulation both at home and abroad have very positive meaning widely.
The robot door control system will effectively in use adopt brand-new magnet counting limit method, with more accurate, safe and reliable mode control gate body, having simplified the installation of original door control system limit switch and navigation magnet, is important breakthrough and the innovation to traditional trackless extensible door guider.
Use automatic retractable door of the present utility model, had advantages such as the incomparable energy-saving and environmental protection of common automatic retractable door, convenient control.Used the robot door control system of converter technique, to be more energy-conservation, and can accomplish to open the door fast, close the door at a slow speed, run into the characteristics that obstacle is evaded fast, these all are the functions that traditional door lifter can't be realized, and these functions will promote fail safe, practicality and the economy of automatic retractable door.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the electrical block diagram of robot door control system.
Embodiment
With reference to Fig. 1, the utility model is to implement like this:
A kind of three phase AC induction machine frequency converter that is used for automatic retractable door, comprise governor circuit and power supply, be provided with current rectifying and wave filtering circuit between described master cpu and the AC power, master cpu also is provided with the voltage sample module respectively, the current sample module, current detection module, temperature detecting module, pump ceiling molding piece, master cpu also is provided with drive circuit, be provided with the PWM controller between master cpu and the drive circuit, current rectifying and wave filtering circuit changes into direct current with civil power, produce frequency conversion PWM waveform through master cpu and PWM controller again, be reverse into the alternating current that the three-phase phase angle becomes 120 degree by drive circuit and inverter then, wherein master cpu periodic sampling electric current and Voltage Feedback, carry out control corresponding, and pump rises control, master cpu also is provided with display module, interface and setting module, the major parameter of frequency converter and and control flow be provided with by unified man-machine interface display module and interface.
Described AC power is a three-phase alternating-current supply, and it also can be single phase alternating current power supply.
Adopt the utility model to make power saving effect fairly obvious, energy-saving effect reaches 75%.Every power of conventional machines people's control system is 350W * 2, power consumption 0.7KWH, calculated in 3 hours by using average every day, power consumption will reach 2.1KWH, and the power consumption of 1 year conventional machines people control system is 2.1KWH/ days * 365 days=766.5KWH so.If adopt energy-saving robot control system, will save the electric weight of 575KWH every every year, and by annual 180000 use amount, will save 103,500 that year, the 000KWH electric weight.To make positive contribution for the energy-saving and emission-reduction of country like this.
The above, it only is a kind of three phase AC induction machine frequency converter preferred embodiment that is used for automatic retractable door of the utility model, be not that technical scope of the present utility model is imposed any restrictions, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model above any trickle modification, equivalent variations and modification that embodiment did.
Claims (2)
1. three phase AC induction machine frequency converter that is used for automatic retractable door, comprise master cpu and AC power, it is characterized in that: be provided with current rectifying and wave filtering circuit between described master cpu and the AC power, master cpu also is provided with the voltage sample module respectively, the current sample module, current detection module, temperature detecting module, pump ceiling molding piece, master cpu also is provided with drive circuit, be provided with the PWM controller between master cpu and the drive circuit, current rectifying and wave filtering circuit changes into direct current with civil power, produce frequency conversion PWM waveform through master cpu and PWM controller again, be reverse into the alternating current that the three-phase phase angle becomes 120 degree by drive circuit and inverter then, wherein master cpu periodic sampling electric current and Voltage Feedback, carry out control corresponding, and pump rises control, master cpu also is provided with display module, interface and setting module, the major parameter of frequency converter and and control flow be provided with by unified man-machine interface display module and interface.
2. a kind of three phase AC induction machine frequency converter that is used for automatic retractable door according to claim 1 is characterized in that described AC power is single phase alternating current power supply or three-phase alternating-current supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202620982U CN201750344U (en) | 2009-12-29 | 2009-12-29 | Three-phase AC induction motor frequency converter for automatic expanding door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202620982U CN201750344U (en) | 2009-12-29 | 2009-12-29 | Three-phase AC induction motor frequency converter for automatic expanding door |
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| Publication Number | Publication Date |
|---|---|
| CN201750344U true CN201750344U (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202620982U Expired - Fee Related CN201750344U (en) | 2009-12-29 | 2009-12-29 | Three-phase AC induction motor frequency converter for automatic expanding door |
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| Country | Link |
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| CN (1) | CN201750344U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916590A (en) * | 2011-08-04 | 2013-02-06 | 宏远创建有限公司 | One-phase-to-triphase economizer |
| CN103683969A (en) * | 2013-08-07 | 2014-03-26 | 襄阳南车电气系统技术有限公司 | A converter which converts a single-phase power supply into a three phase power supply |
| CN108847806A (en) * | 2018-06-27 | 2018-11-20 | 佛山市诺行科技有限公司 | A kind of battery direct-furnish driving device of bicycle position parking apparatus |
| CN108988731A (en) * | 2017-05-31 | 2018-12-11 | 刘庆东 | Electric motor of automobile frequency converter detecting and controlling system |
| WO2023122886A1 (en) * | 2021-12-27 | 2023-07-06 | 西门子股份公司 | Voltage converter control apparatus, method and system |
-
2009
- 2009-12-29 CN CN2009202620982U patent/CN201750344U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916590A (en) * | 2011-08-04 | 2013-02-06 | 宏远创建有限公司 | One-phase-to-triphase economizer |
| CN103683969A (en) * | 2013-08-07 | 2014-03-26 | 襄阳南车电气系统技术有限公司 | A converter which converts a single-phase power supply into a three phase power supply |
| CN108988731A (en) * | 2017-05-31 | 2018-12-11 | 刘庆东 | Electric motor of automobile frequency converter detecting and controlling system |
| CN108847806A (en) * | 2018-06-27 | 2018-11-20 | 佛山市诺行科技有限公司 | A kind of battery direct-furnish driving device of bicycle position parking apparatus |
| WO2023122886A1 (en) * | 2021-12-27 | 2023-07-06 | 西门子股份公司 | Voltage converter control apparatus, method and system |
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| 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: 20110216 Termination date: 20121229 |