CN101924518A - Three-phase frequency-variable energy-saving device for water pump - Google Patents
Three-phase frequency-variable energy-saving device for water pump Download PDFInfo
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- CN101924518A CN101924518A CN2010102747868A CN201010274786A CN101924518A CN 101924518 A CN101924518 A CN 101924518A CN 2010102747868 A CN2010102747868 A CN 2010102747868A CN 201010274786 A CN201010274786 A CN 201010274786A CN 101924518 A CN101924518 A CN 101924518A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of energy-saving control for motors and particularly discloses a three-phase frequency-variable energy-saving device for a water pump, which comprises an operating parameter detection circuit (10) for the water pump, a three-phase rectification circuit (20), a charging circuit (30), batteries (40), a battery switch (50), a three-phase inverter (60), a capacitor (70), a control circuit (80) and a three-phase power contactor (90). By applying the three-phase frequency-variable energy-saving device to a water pump provided with an AC (alternating current) motor, the invention can respectively and simultaneously achieve two methods for saving energy, i.e., speed-regulation and peak-load shifting of power grid, thus generally achieving the effect of power conservation by 20%-90%; and the three-phase frequency-variable energy-saving device of the invention has the advantages of simple structure, direct-viewing measurement and significant energy-saving effect. Therefore, the invention has wide application prospect in saving energy for water pumps.
Description
Technical field
The present invention relates to three-phase frequency-variable energy-saving device for water pump, 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 water pump 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 water pump has become a kind of being seen everywhere, the common universal electromechanical equipment that is used on a large scale.The power consumption of the three-phase alternating-current motor water pump 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 water pump being carried out power-saving Retrofit.
At present, a lot of occasions are arranged, the three-phase alternating-current motor water pump 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 frequency-variable energy-saving device for water pump of power savings.
In order to realize that the foregoing invention purpose adopts following technical scheme:
Three-phase frequency-variable energy-saving device for water pump of the present invention comprises water pump 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) respectively with the input of rectified three-phase circuit (20), the input of charging circuit (30) connects, the output of rectified three-phase circuit (20) respectively with the input of cell switch (50), three-phase inverter (60) input is connected, the output of cell switch (50) respectively with the output of charging circuit (30), battery (40) is connected, the dc terminal of three-phase inverter (60) is connected with capacitor (70), control circuit (80) respectively with water pump operation parameter detecting circuit (10), the control end of 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) is connected, the output of three-phase inverter (60) is connected with the water pump alternating current motor, and water pump operation parameter detecting circuit (10) is connected with transducer on being installed on water pump.
Adopted the three-phase frequency-variable energy-saving device for water pump of this invention, can realize simultaneously that the dynamic speed adjustment of water pump 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 water pump 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 water pump 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.Aspect pump energy saving, be with a wide range of applications.
Description of drawings
Accompanying drawing is the operation principle block diagram of three-phase frequency-variable energy-saving device for water pump of the present invention.
Embodiment
In order more to be expressly understood technology contents of the present invention, describe in detail especially exemplified by following examples.
Consult shown in the accompanying drawing, with the water pump that is applied to 380V, a 50HZ, 3 phases, 15KW is reference, this three-phase frequency-variable energy-saving device for water pump comprises water pump 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) respectively with the input of rectified three-phase circuit (20), the input of charging circuit (30) connects, the output of rectified three-phase circuit (20) respectively with the input of cell switch (50), three-phase inverter (60) input is connected, the output of cell switch (50) respectively with the output of charging circuit (30), battery (40) is connected, the dc terminal of three-phase inverter (60) is connected with capacitor (70), control circuit (80) respectively with water pump operation parameter detecting circuit (10), the control end of 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) is connected, the output of three-phase inverter (60) is connected with the water pump alternating current motor, and water pump operation parameter detecting circuit (10) is connected with transducer on being installed on water pump.
Simultaneously, the power device that is comprised in the three-phase inverter (60) in this three-phase frequency-variable energy-saving device for water pump 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, charge for battery (40), cell switch this moment (50) disconnects.Civil power becomes direct current by 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 water pump, the different speed of the corresponding water pump of different frequencies.Control circuit (80) receives the feedback signal of water pump 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 pump motor with the output speed signal.Pump motor speed descends, and will cause pump energy consumption to decline to a great extent.
When electricity price is in peak when electricity (be generally daytime to point in evenings 22) at 8, charging circuit (30) automatic disconnection, carry out direct current supply for three-phase inverter (60) by battery (40) by 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 water pump, the different speed of the corresponding water pump of different frequencies.Control circuit (80) receives the feedback signal of water pump 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 pump motor with the output speed signal.Pump motor speed descends, and will cause pump energy consumption to decline to a great extent.
For the water pump of this 380V, 50HZ, 3 phases, 15KW, motor speed can be regulated according to water pump 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 frequency-variable energy-saving device for water pump 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 frequency-variable energy-saving device for water pump of the present invention can discharge so that the peak electricity consumption has been avoided in the water pump normal operation from battery (40), and the actual electricity charge wholesale of paying is reduced.
Adopted the three-phase frequency-variable energy-saving device for water pump of this invention, can realize simultaneously that the dynamic speed adjustment of water pump 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 water pump 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 water pump 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.Aspect pump energy saving, be with a wide range of applications.
In this specification, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention at the three-phase water pump.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (2)
1. a three-phase frequency-variable energy-saving device for water pump comprises water pump 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) respectively with the input of rectified three-phase circuit (20), the input of charging circuit (30) connects, the output of rectified three-phase circuit (20) respectively with the input of cell switch (50), three-phase inverter (60) input is connected, the output of cell switch (50) respectively with the output of charging circuit (30), battery (40) is connected, the dc terminal of three-phase inverter (60) is connected with capacitor (70), control circuit (80) respectively with water pump operation parameter detecting circuit (10), the control end of 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) is connected, the output of three-phase inverter (60) is connected with the water pump alternating current motor, and water pump operation parameter detecting circuit (10) is connected with transducer on being installed on water pump.
2. three-phase frequency-variable energy-saving device for water pump 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 |
|---|---|---|---|
| CN2010102747868A CN101924518A (en) | 2010-09-07 | 2010-09-07 | Three-phase frequency-variable energy-saving device for water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102747868A CN101924518A (en) | 2010-09-07 | 2010-09-07 | Three-phase frequency-variable energy-saving device for water pump |
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| Publication Number | Publication Date |
|---|---|
| CN101924518A true CN101924518A (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102747868A Pending CN101924518A (en) | 2010-09-07 | 2010-09-07 | Three-phase frequency-variable energy-saving device for water pump |
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| Country | Link |
|---|---|
| CN (1) | CN101924518A (en) |
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2010
- 2010-09-07 CN CN2010102747868A patent/CN101924518A/en active Pending
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Application publication date: 20101222 |