CN102403954A - Frequency conversion electricity saver for three-phase air compressor - Google Patents
Frequency conversion electricity saver for three-phase air compressor Download PDFInfo
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- CN102403954A CN102403954A CN2010102749581A CN201010274958A CN102403954A CN 102403954 A CN102403954 A CN 102403954A CN 2010102749581 A CN2010102749581 A CN 2010102749581A CN 201010274958 A CN201010274958 A CN 201010274958A CN 102403954 A CN102403954 A CN 102403954A
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Abstract
The invention discloses a variable-frequency power saver of a three-phase air compressor, belonging to the technical field of energy-saving control of motors. The device comprises an air compressor operation parameter detection circuit (10), a three-phase rectification circuit (20), a charging circuit (30), a battery (40), a battery switch (50), a three-phase inverter (60), a capacitor (70), a control circuit (80) and a three-phase power supply contactor (90). The frequency conversion power saver of the three-phase air compressor is applied to the air compressor with the alternating current motor, two energy saving methods of speed regulation and energy saving and peak clipping and valley filling of a power grid can be respectively and simultaneously realized, and the power saving effect of 20-90 percent can be generally achieved. The frequency conversion electricity-saving device of the three-phase air compressor has the advantages of simple structure, intuitive metering, obvious electricity-saving effect and wide application prospect in the aspect of energy conservation of the air compressor.
Description
Technical field
The present invention relates to three-phase air compressor machine frequency-variable energy-saving device, belong to energy saving motor control technology field, be specifically related to a kind of variable speed energy saving and these two kinds of power control units that power-economizing method economizes on electricity of electrical network peak load shifting realized simultaneously.Be applicable on the air compressor machine that has three-phase alternating-current motor.
Background technology
Along with progress, the development of science and technology of society, the three-phase alternating-current motor air compressor machine has become a kind of being seen everywhere, by the extensive common universal electromechanical equipment that uses.The power consumption of the three-phase alternating-current motor air compressor machine electric energy energy consumption in the whole nation has relatively occupied suitable ratio.
The positive growing tension of 21 century global energy, China is again energy resource consumption big country, energy-conservation economize on electricity is imperative.
Therefore, it is necessary air compressor machine being carried out power-saving Retrofit.
At present, a lot of occasions are arranged, the three-phase alternating-current motor air compressor machine does not adopt power-saving technology that it is carried out reducing energy consumption, or only just frequency converter has been installed simply its speed fixedly is reduced to certain value and does not carry out dynamic adjustments.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned waste of energy of the prior art, provide a kind of simple and practical, cost is lower, can fully automatic operation, the significant three-phase air compressor machine of power savings frequency-variable energy-saving device.
In order to realize that the foregoing invention purpose adopts following technical scheme:
Three-phase air compressor machine frequency-variable energy-saving device of the present invention comprises compressor operation parameter detecting circuit (10), rectified three-phase circuit (20), charging circuit (30), battery (40), cell switch (50), three-phase inverter (60), capacitor (70), control circuit (80), three phase mains contactor (90).The external electrical network three phase mains inserts the input of three phase mains contactor (90); The output of three phase mains contactor (90) is connected with the input of rectified three-phase circuit (20), the input of charging circuit (30) respectively; The output of rectified three-phase circuit (20) is connected with input, three-phase inverter (60) input of cell switch (50) respectively; The output of cell switch (50) is connected with output, the battery (40) of charging circuit (30) respectively; The dc terminal of three-phase inverter (60) is connected with capacitor (70); Control circuit (80) is connected with the control end of compressor operation parameter detecting circuit (10), rectified three-phase circuit (20), the control end of charging circuit (30), the control end of cell switch (50), the control end of three-phase inverter (60), the control end of three phase mains contactor (90) respectively; The output of three-phase inverter (60) is connected with the air compressor machine alternating current motor, and compressor operation parameter detecting circuit (10) is connected with transducer on being installed on air compressor machine.
Adopted the three-phase air compressor machine frequency-variable energy-saving device of this invention, can realize simultaneously that the dynamic speed adjustment of air compressor machine is energy-conservation and the electrical network peak load shifting is carried out these two kinds of power-economizing methods of electric power storage energy storage to economize on electricity.When this battery saving arrangement is applied on the air compressor machine of not making similar power-saving Retrofit, generally can obtain 20%～90% power savings, electricity-saving appliance of the present invention does not influence the use of air compressor machine operate as normal simultaneously; Simple installation; Possess good economic benefit and social benefit, and simple and practical, and cost is lower; Can fully automatic operation, power savings is remarkable.Be with a wide range of applications aspect energy-conservation at air compressor machine.
Description of drawings
Accompanying drawing is the operation principle block diagram of three-phase air compressor machine frequency-variable energy-saving device of the present invention.
Embodiment
In order more to be expressly understood technology contents of the present invention, the special following examples of lifting specify.
Consult shown in the accompanying drawing; With the air compressor machine that is applied to a 380V, 50HZ, 3 phases, 15KW is reference; This three-phase air compressor machine frequency-variable energy-saving device comprises compressor operation parameter detecting circuit (10), rectified three-phase circuit (20), charging circuit (30), battery (40), cell switch (50), three-phase inverter (60), capacitor (70), control circuit (80), three phase mains contactor (90).The external electrical network three phase mains inserts the input of three phase mains contactor (90); The output of three phase mains contactor (90) is connected with the input of rectified three-phase circuit (20), the input of charging circuit (30) respectively; The output of rectified three-phase circuit (20) is connected with input, three-phase inverter (60) input of cell switch (50) respectively; The output of cell switch (50) is connected with output, the battery (40) of charging circuit (30) respectively; The dc terminal of three-phase inverter (60) is connected with capacitor (70); Control circuit (80) is connected with the control end of compressor operation parameter detecting circuit (10), rectified three-phase circuit (20), the control end of charging circuit (30), the control end of cell switch (50), the control end of three-phase inverter (60), the control end of three phase mains contactor (90) respectively; The output of three-phase inverter (60) is connected with the air compressor machine alternating current motor, and compressor operation parameter detecting circuit (10) is connected with transducer on being installed on air compressor machine.
Simultaneously, the power device that is comprised in the three-phase inverter (60) in this three-phase air compressor machine frequency-variable energy-saving device can be V-type groove metal-oxide-semiconductor field effect transistor (VMOS), igbt (IGBT), integral gate change transistor (IGCT), smart power switch device and drive circuit integration module (IPM) or intelligent power integrated circuit (SPIC).
The 380V50HZ power supply is linked into charging circuit (30) and rectified three-phase circuit (20) through three phase mains contactor (90); When electricity price electricity price at a low ebb at 22 (being generally in evening to point on daytimes 8); Charging circuit (30) puts into operation, charges for battery (40), and cell switch this moment (50) breaks off.Civil power becomes direct current through rectified three-phase circuit (20), through three-phase inverter (60) direct current is converted into the alternating current of frequency adjustable, and this alternating current is sent to air compressor machine, the corresponding air compressor machine different speed of different frequencies.Control circuit (80) receives the feedback signal of compressor operation parameter detecting circuit (10) in real time, and through after the computing, to three-phase inverter (60), the corresponding frequency of three-phase inverter (60) output arrives air compressor motor with the output speed signal.Air compressor motor speed descends, and will cause the air compressor machine energy consumption to decline to a great extent.
When electricity price is in peak electric (be generally daytime 8 to point in evenings 22); Charging circuit (30) automatic disconnection carries out direct current supply for three-phase inverter (60) by battery (40) through cell switch (50), at this moment; Rectified three-phase circuit (20) automatic disconnection; The direct current that battery (40) provides is converted into the alternating current of frequency adjustable through three-phase inverter (60) with direct current, and this alternating current is sent to air compressor machine, the corresponding air compressor machine different speed of different frequencies.Control circuit (80) receives the feedback signal of compressor operation parameter detecting circuit (10) in real time, and through after the computing, to three-phase inverter (60), the corresponding frequency of three-phase inverter (60) output arrives air compressor motor with the output speed signal.Air compressor motor speed descends, and will cause the air compressor machine energy consumption to decline to a great extent.
For the air compressor machine of this 380V, 50HZ, 3 phases, 15KW, motor speed can be regulated according to compressor operation parameter detecting circuit (10), and energy consumption can significantly reduce.Because electric power low ebb electricity price is cheap more a lot of than peak electricity tariff, when being in electric power low ebb electricity price, three-phase air compressor machine frequency-variable energy-saving device of the present invention can be to battery (40) charging accumulation of energy simultaneously; When being in the electric power peak electricity tariff, three-phase air compressor machine frequency-variable energy-saving device of the present invention can discharge so that the peak electricity consumption has been avoided in the air compressor machine normal operation from battery (40), and the actual electricity charge wholesale of paying is reduced.
Adopted the three-phase air compressor machine frequency-variable energy-saving device of this invention, can realize simultaneously that the dynamic speed adjustment of air compressor machine is energy-conservation and the electrical network peak load shifting is carried out these two kinds of power-economizing methods of electric power storage energy storage to economize on electricity.When this battery saving arrangement is applied on the air compressor machine of not making similar power-saving Retrofit, generally can obtain 20%～90% power savings, electricity-saving appliance of the present invention does not influence the use of air compressor machine operate as normal simultaneously; Simple installation; Possess good economic benefit and social benefit, and simple and practical, and cost is lower; Can fully automatic operation, power savings is remarkable.Be with a wide range of applications aspect energy-conservation at air compressor machine.
In this specification, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion and not deviate from the spirit and scope of the present invention obviously to the three-phase air compressor machine.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (2)
1. a three-phase air compressor machine frequency-variable energy-saving device comprises compressor operation parameter detecting circuit (10), rectified three-phase circuit (20), charging circuit (30), battery (40), cell switch (50), three-phase inverter (60), capacitor (70), control circuit (80), three phase mains contactor (90).The external electrical network three phase mains inserts the input of three phase mains contactor (90); The output of three phase mains contactor (90) is connected with the input of rectified three-phase circuit (20), the input of charging circuit (30) respectively; The output of rectified three-phase circuit (20) is connected with input, three-phase inverter (60) input of cell switch (50) respectively; The output of cell switch (50) is connected with output, the battery (40) of charging circuit (30) respectively; The dc terminal of three-phase inverter (60) is connected with capacitor (70); Control circuit (80) is connected with the control end of compressor operation parameter detecting circuit (10), rectified three-phase circuit (20), the control end of charging circuit (30), the control end of cell switch (50), the control end of three-phase inverter (60), the control end of three phase mains contactor (90) respectively; The output of three-phase inverter (60) is connected with the air compressor machine alternating current motor, and compressor operation parameter detecting circuit (10) is connected with transducer on being installed on air compressor machine.
2. three-phase air compressor machine frequency-variable energy-saving device according to claim 1 is characterized in that: the power device in the described three-phase inverter (60) is V-type groove metal-oxide-semiconductor field effect transistor (VMOS), igbt (IGBT), integral gate change transistor (IGCT), smart power switch device and drive circuit integration module (IPM) or intelligent power integrated circuit (SPIC).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102749581A CN102403954A (en) | 2010-09-07 | 2010-09-07 | Frequency conversion electricity saver for three-phase air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102749581A CN102403954A (en) | 2010-09-07 | 2010-09-07 | Frequency conversion electricity saver for three-phase air compressor |
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| Publication Number | Publication Date |
|---|---|
| CN102403954A true CN102403954A (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102749581A Pending CN102403954A (en) | 2010-09-07 | 2010-09-07 | Frequency conversion electricity saver for three-phase air compressor |
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| Country | Link |
|---|---|
| CN (1) | CN102403954A (en) |
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2010
- 2010-09-07 CN CN2010102749581A patent/CN102403954A/en active Pending
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Application publication date: 20120404 |