CN204886782U - Energy -saving variable frequency speed governing(VFSG) three phase machine - Google Patents
Energy -saving variable frequency speed governing(VFSG) three phase machine Download PDFInfo
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- CN204886782U CN204886782U CN201520540931.0U CN201520540931U CN204886782U CN 204886782 U CN204886782 U CN 204886782U CN 201520540931 U CN201520540931 U CN 201520540931U CN 204886782 U CN204886782 U CN 204886782U
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Abstract
The utility model provides an energy -saving variable frequency speed governing(VFSG) three phase machine, it is main including variable frequency speed device, the three phase machine, the shaft coupling, the three phase machine is connected to variable frequency speed device's power end, be connected with the shaft coupling between three phase machine driving shaft and the driven shaft, shaft coupling connected load, variable frequency speed device includes inverter circuit, a rectification circuit, the drive protection circuit, the single chip microcomputer control unit, a power factor correction circuit, electric capacity switching controlling the driving unit and voltage current control unit, electric capacity switching controlling the driving unit passes through each the corresponding voltage in condenser both ends in the switched capacitor group and realizes energy -conservation, the utility model discloses simple structure, small, with low costs, energy -conserving effect is obvious, can prolong the three phase machine and the life of the load be connected with the three phase machine.
Description
Technical field:
The utility model relates to three phase electric machine control field, particularly relates to a kind of energy-saving type frequency conversion speed governing three phase electric machine.
Background technology:
Three phase electric machine refers to the threephase stator winding (each difference 120 degree of electrical degrees) when motor, after passing into three-phase alternating current, by generation rotating magnetic field, this rotating magnetic field cutting rotor winding, thus in rotor windings, produce induced current (rotor windings is close access)
Along with the development of society, the demand of people to the energy is more and more higher, and energy crisis forces people to sustainable development and energy-conservationly more to pay attention to.All need in places such as industrial and mining enterprises, machine-operated school, residential quarters to use a large amount of electric energy, the electrical energy demands of current China also also exists very large breach, and therefore, electrical energy saving should be our regular work.
China Patent No. " 201120169016.7 " discloses a kind of Simple frequency-variable speed regulating, its advantage is: stable performance, failure rate is low, energy-conserving and environment-protective, compared with electromagnetic adjustable speed motor, electrical machine energy-saving reaches 20%, extends electric equipment useful life, decreases repair and maintenance expense, improve site safety, its weak point is: the variable-frequency governor intelligence degree that it adopts is low, and energy-saving effect is not obvious, cost is high, poor practicability.
Utility model content:
In order to solve the problem, the utility model provides that a kind of structure is simple, volume is little, cost is low, and energy-saving effect is obvious, the technical scheme in useful life of load that can extend three phase electric machine and be connected with three phase electric machine:
A kind of energy-saving type frequency conversion speed governing three phase electric machine, mainly comprise RHVC, three phase electric machine, shaft coupling, the power end of RHVC connects three phase electric machine, shaft coupling is connected with between three phase electric machine driving shaft and driven shaft, shaft coupling connects load, RHVC comprises inverter circuit, rectification circuit, Drive Protecting Circuit, single chip control unit, circuit of power factor correction, capacitor switching controls driver element and voltage/current control unit, RHVC also comprises input current sampling unit, output voltage sampling unit and Capacitor banks, rectification circuit one end access three-phase input end, the other end connects input current sampling unit, input current sampling unit connects inverter circuit, inverter circuit connects three phase electric machine and circuit of power factor correction respectively, Drive Protecting Circuit connects inverter circuit and circuit of power factor correction respectively, circuit of power factor correction connects single chip control unit.
As preferably, circuit of power factor correction also connects output voltage sampling unit respectively, capacitor switching controls driver element, single chip control unit connects three phase electric machine by voltage/current control unit 11, capacitor switching controls driver element and connects Capacitor banks, Capacitor banks connects three-phase output end, and three-phase output end also connects output voltage sampling unit.
As preferably, the electric capacity number in Capacitor banks is 1-10.
As preferably, Drive Protecting Circuit comprises drive circuit, overcurrent/voltage protection circuit, temperature overload protective circuit, open-phase protection circuit, short-circuit protection circuit.
The beneficial effects of the utility model are:
The utility model improves on basis before, the RHVC adopted analyzes judgement signal by single chip control unit, realize energy-conservation by each capacitor two ends relevant voltage in opening-closing capacitor bank, energy-saving effect is obvious, useful life of load that can extend three phase electric machine and be connected with three phase electric machine.
Accompanying drawing illustrates:
Fig. 1 is Integral connection structure figure of the present utility model;
Fig. 2 is RHVC johning knot composition of the present utility model.
Embodiment:
For making goal of the invention of the present utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, execution mode of the present utility model is described in further detail.
As shown in Figure 1-2, a kind of energy-saving type frequency conversion speed governing three phase electric machine, mainly comprise RHVC 1, three phase electric machine 2, shaft coupling 3, the power end of RHVC 1 connects three phase electric machine 2, shaft coupling 3 is connected with between three phase electric machine 2 driving shaft and driven shaft, shaft coupling 3 connects load 4, RHVC 1 comprises inverter circuit 5, rectification circuit 6, Drive Protecting Circuit 7, single chip control unit 8, circuit of power factor correction 9, capacitor switching controls driver element 10 and voltage/current control unit 11, Drive Protecting Circuit 7 comprises drive circuit, overcurrent/voltage protection circuit, temperature overload protective circuit, open-phase protection circuit, short-circuit protection circuit.
RHVC 1 also comprises input current sampling unit 12, output voltage sampling unit 13 and Capacitor banks 14, rectification circuit 6 one end access three-phase input end 15, the other end connects input current sampling unit 12, input current sampling unit 12 connects inverter circuit 5, inverter circuit 5 connects three phase electric machine 2 and circuit of power factor correction 9 respectively, Drive Protecting Circuit 7 connects inverter circuit 5 and circuit of power factor correction 9 respectively, circuit of power factor correction 9 also connects single chip control unit 8 respectively, output voltage sampling unit 13, capacitor switching controls driver element 10, single chip control unit 8 connects three phase electric machine 2 by voltage/current control unit 11, capacitor switching controls driver element 10 and connects Capacitor banks 14, electric capacity number in Capacitor banks 14 is 1-10, Capacitor banks 14 connects three-phase output end 16, three-phase output end 16 also connects output voltage sampling unit 13.Output voltage sampling unit 13 is connected with single chip control unit 8 with three-phase output end 16 respectively, output voltage sampling unit 13 gathers output voltage signal, this signal is sent to single chip control unit 8, single chip control unit 8 processes the signal received, control driver element 10 to capacitor switching and send instruction, capacitor switching controls driver element 10 and is connected with Capacitor banks 14 with circuit of power factor correction 9 respectively, capacitor switching controls driver element 10 according to the instruction received, each capacitor in opening-closing capacitor bank 14 obtains different output voltage to reach energy-conservation object.The utility model improves on basis before, the RHVC adopted analyzes judgement signal by single chip control unit, realize energy-conservation by each capacitor two ends relevant voltage in opening-closing capacitor bank, energy-saving effect is obvious, useful life of load that can extend three phase electric machine and be connected with three phase electric machine.
Above-described embodiment is preferred embodiment of the present utility model; it is not the restriction to technical solutions of the utility model; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (4)
1. an energy-saving type frequency conversion speed governing three phase electric machine, mainly comprise RHVC (1), three phase electric machine (2), shaft coupling (3), it is characterized in that: the power end of described RHVC (1) connects described three phase electric machine (2), described three phase electric machine (2) is connected with described shaft coupling (3) between driving shaft and driven shaft, described shaft coupling (3) connects load (4), described RHVC (1) comprises inverter circuit (5), rectification circuit (6), Drive Protecting Circuit (7), single chip control unit (8), circuit of power factor correction (9), capacitor switching controls driver element (10) and voltage/current control unit (11), described RHVC (1) also comprises input current sampling unit (12), output voltage sampling unit (13) and Capacitor banks (14), described rectification circuit (6) one end access three-phase input end (15), the other end connects described input current sampling unit (12), described input current sampling unit (12) connects described inverter circuit (5), described inverter circuit (5) connects three phase electric machine (2) and described circuit of power factor correction (9) respectively, described Drive Protecting Circuit (7) connects described inverter circuit (5) and described circuit of power factor correction (9) respectively, described circuit of power factor correction (9) connects described single chip control unit (8).
2. a kind of energy-saving type frequency conversion speed governing three phase electric machine according to claim 1, it is characterized in that: described circuit of power factor correction (9) also connects described output voltage sampling unit (13) respectively, described capacitor switching controls driver element (10), described single chip control unit (8) connects described three phase electric machine (2) by described voltage/current control unit (11), described capacitor switching controls driver element (10) and connects described Capacitor banks (14), described Capacitor banks (14) connects three-phase output end (16), three-phase output end (16) also connects described output voltage sampling unit (13).
3. a kind of energy-saving type frequency conversion speed governing three phase electric machine according to claim 2, is characterized in that: the electric capacity number in described Capacitor banks (14) is 1-10.
4. a kind of energy-saving type frequency conversion speed governing three phase electric machine according to claim 1, is characterized in that: described Drive Protecting Circuit (7) comprises drive circuit, overcurrent/voltage protection circuit, temperature overload protective circuit, open-phase protection circuit, short-circuit protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520540931.0U CN204886782U (en) | 2015-07-20 | 2015-07-20 | Energy -saving variable frequency speed governing(VFSG) three phase machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520540931.0U CN204886782U (en) | 2015-07-20 | 2015-07-20 | Energy -saving variable frequency speed governing(VFSG) three phase machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204886782U true CN204886782U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520540931.0U Expired - Fee Related CN204886782U (en) | 2015-07-20 | 2015-07-20 | Energy -saving variable frequency speed governing(VFSG) three phase machine |
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| CN (1) | CN204886782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187753A (en) * | 2021-04-28 | 2021-07-30 | 广州彩熠灯光股份有限公司 | Fan control device and lamp |
-
2015
- 2015-07-20 CN CN201520540931.0U patent/CN204886782U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187753A (en) * | 2021-04-28 | 2021-07-30 | 广州彩熠灯光股份有限公司 | Fan control device and lamp |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20160720 |