CN202455255U - Winding switching circuit of elevator dragging switching magnetoresistance motor power converter - Google Patents
Winding switching circuit of elevator dragging switching magnetoresistance motor power converter Download PDFInfo
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- CN202455255U CN202455255U CN201220071284XU CN201220071284U CN202455255U CN 202455255 U CN202455255 U CN 202455255U CN 201220071284X U CN201220071284X U CN 201220071284XU CN 201220071284 U CN201220071284 U CN 201220071284U CN 202455255 U CN202455255 U CN 202455255U
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Abstract
A winding switching circuit of an elevator dragging switching magnetoresistance motor power converter comprises a DC power supply and a winding unit, wherein the winding unit consists of a first winding and a second winding; only one winding in each winding unit is electrified; one end of the first winding for connecting the second winding is connected with the negative ends of a second switching tube and a second diode; the other end of the second switching tube is connected with the positive output end of the DC power supply, and the positive end of the second diode is connected with the negative end of the DC power supply; the other end of the first winding is connected with the positive end of a first diode and the first switching tube, the negative end of the first diode is connected with the positive output end of the DC power supply, and the other end of the first switching tube is connected with the negative output end of the DC power supply; the other end of the second winding is connected with the positive end of a third diode and a third switching tube; the negative end of the third diode is connected with the positive output end of the DC power supply; and the other end of the third switching tube is connected with the negative output end of the DC power supply. The utility model has the advantages of simplicity in structure and less required switching tubes.
Description
Technical field
The utility model relates to a kind of elevator and drags the winding switching circuit of quoting the switched reluctance motor power inverter.
Background technology
Existing two kind of four the most frequently used phase winding switched reluctance motor power inverter main circuit structure form; Switching tube bears voltage when turn-offing big and armature winding voltage is less; Can not use sufficient power supply capacity; Electronic torque validity is also lower, bipolar power supply type power inverter main circuit as shown in Figure 1.Every phase is its major advantage with a main switch only, but the voltage of main switch and fly-wheel diode is U by norm
S+ Δ U (arbitrary transient voltage that Δ U system causes because of commutation), and the voltage that adds to winding is merely U
S/ 2, fail with the rated voltage of sufficient switching device and the capacity of power supply.In addition, the power inverter main circuit of this structure when the motor single phasing, has only a switching tube conducting, C because of instantaneous
1, C
2Bigger fluctuation alternately appears.Adopt the two-phase operation mode can address this problem (prerequisite is that the upper and lower two parts of circuit have a phase winding conducting simultaneously), but when two-phase operation, the validity of electronic torque will reduce, the resistance loss of electric current in phase winding but will increase; And, two identical time energisings, the saturated aggravation of motor magnetic circuit has further reduced electric current and has produced the validity of electronic torque.
Required switching tube quantity is more, less economical, asymmetrical half-bridge type main circuit as shown in Figure 2.Its feature is: the voltage of (1), each main switch is U by norm
S, with the voltage of motor windings quota approximately equal, thus this circuit with foot the rated voltage of main switch, effectively all supply voltages can be used to control the phase winding electric current.(2), since every phase winding be connected to asymmetrical half-bridge separately, on circuit, Current Control between phase and phase is fully independently.(3), can 3 kinds of voltage circuits be provided to phase winding, the positive voltage loop the during conducting simultaneously of promptly upper and lower main switch, the no-voltage loop a when main switch keeps conducting another main switch to turn-off, the negative voltage loop when upper and lower main switch all turn-offs.Like this; Can adopt the non-feed-back type chopping way of energy during the low speed chopper control mode; Promptly between the copped wave afterflow period; The quadergy exchange between motor and power supply has been avoided in the afterflow of phase current in " no-voltage loop ", this to increase torque, improve the power inverter capacity utilance, to reduce the copped wave number of times, face upward the system mains fluctuations, reduce torque pulsation all be favourable.(4), whenever need 2 main switches mutually, fail to demonstrate fully unipolar switched reluctance motor power inverter than other Alternating Current Governor System current transformer inherent advantages.Can find out through above analysis, see that the asymmetrical half-bridge type has great advantage than the bipolar power supply type from performance; Its unique deficiency is that used switching device quantity is many; Especially to non-small-sized SR motor, obviously increased the cost of power inverter, less economical.
The utility model content
For overcoming the above-mentioned shortcoming of prior art; It is a kind of simple in structure that the utility model provides; Required switching tube quantity is few, and the elevator that the winding of arbitrary conducting all can receive full voltage when powering up is dragged the winding switching circuit of quoting the switched reluctance motor power inverter.
Elevator is dragged the winding switching circuit of quoting the switched reluctance motor power inverter, comprises the DC power supply of outside input and two winding elements that are connected in parallel, and DC power supply loads on two winding elements; Winding element comprises first winding and second winding that is connected in series; There is and only has a winding energising in each winding element;
An end that links to each other with second winding of first winding is connected the negative terminal of the second switch pipe and second diode, and the other end of second switch pipe connects the positive output end of power supply, and the anode of second diode connects the negative output terminal of power supply; The other end of first winding connects the anode and first switching tube of first diode, and the negative terminal of first diode connects the positive output end of power supply, and the other end of first switching tube connects the negative output terminal of power supply; The other end of second winding connects the anode and the 3rd switching tube of the 3rd diode, and the negative terminal of the 3rd diode connects the positive output end of power supply, and the other end of the 3rd switching tube connects the negative output terminal of power supply.After the winding outage, because winding is an inductive load, winding current can't be reduced to zero degree immediately, utilizes the unidirectional conduction of diode that the part electric energy is fed back to power supply.
Further, the winding of two winding elements forms the operation order of four sections conductings in twos that circulate according to multiplicative principle with combining form.Be specifically: first winding conducting of first winding element and the first winding conducting of second winding element-the first winding conducting of second winding element and the second winding conducting of first winding element-the second winding conducting of first winding element and the second winding conducting of second winding element-second winding conducting of second winding element and the first winding conducting of first winding element.
The technical conceive of the utility model is: winding is connected in twos be distributed in two groups of switching circuits; Each winding element has three switching tubes, and the second switch pipe of each winding element is shared, has saved the quantity of switching tube; Power up the descendant and all can receive full voltage with the winding of conducting, efficient is high.
It is few to the utlity model has switching tube quantity simple in structure, required, and the winding of arbitrary conducting all can receive the advantage of full voltage when powering up.
Description of drawings
Fig. 1 is existing bipolar power supply type four phase switch reluctance motor power inverter main circuits commonly used.
Fig. 2 is existing asymmetrical half-bridge type four phase switch reluctance motor power inverter main circuits commonly used.
Fig. 3 is the circuit diagram of the utility model.
Embodiment
With reference to Fig. 3, further specify the utility model:
Elevator is dragged the winding switching circuit of quoting the switched reluctance motor power inverter, comprises the DC power supply Us of outside input and two winding elements that are connected in parallel, and DC power supply Us loads on two winding elements; Winding element comprises first winding and second winding that is connected in series; There is and only has a winding energising in each winding element;
An end that links to each other with second winding of first winding is connected the negative terminal of the second switch pipe and second diode, and the other end of second switch pipe connects the positive output end of power supply, and the anode of second diode connects the negative output terminal of power supply; The other end of first winding connects the anode and first switching tube of first diode, and the negative terminal of first diode connects the positive output end of power supply, and the other end of first switching tube connects the negative output terminal of power supply; The other end of second winding connects the anode and the 3rd switching tube of the 3rd diode, and the negative terminal of the 3rd diode connects the positive output end of power supply, and the other end of the 3rd switching tube connects the negative output terminal of power supply.After the winding outage, because winding is an inductive load, winding current can't be reduced to zero degree immediately, utilizes the unidirectional conduction of diode that the part electric energy is fed back to power supply.
Specifically as shown in Figure 3, first winding element comprises motor windings A, electronics winding C, diode D1, D2, D3 and switch transistor T 1, T2, T3;
Second winding element comprises electronics winding B, electronics winding D, diode D4, D5, D6 and switch transistor T 4, T5, T6.
Wherein D1 and T1 series connection, the D1 negative electrode connects power supply Us positive ends, and the T1 negative electrode connects power supply Us negative polarity end; T2 and D2 series connection, the T2 anode connects power supply Us positive ends, and the D2 anode connects power supply Us negative polarity end; D3 and T3 series connection, the D3 negative electrode connects power supply Us positive ends, and the T3 negative electrode connects power supply Us negative polarity end; D4 and T4 series connection, the D4 negative electrode connects power supply Us positive ends, and the T4 negative electrode connects power supply Us negative polarity end; T5 and D5 series connection, the T5 anode connects power supply Us positive ends, and the D5 anode connects power supply Us negative polarity end; D6 and T6 series connection, the D6 negative electrode connects power supply Us positive ends, and the T6 negative electrode connects power supply Us negative polarity end; The series connection of A and C phase winding, two ends are connected across D1 and T1 tie point, D3 and T3 tie point place respectively, and wherein a be connected in series place and T2, D2 of A, C is connected in series and overlaps; The series connection of B and D phase winding, two ends are connected across D4 and T4 tie point, D6 and T6 tie point place respectively, and wherein a be connected in series place and T5, D5 of B, D is connected in series and overlaps.
The winding of two winding elements forms the operation order of four sections conductings in twos that circulate according to multiplicative principle with combining form.Be specifically: first winding conducting of first winding element and the first winding conducting of second winding element-the first winding conducting of second winding element and the second winding conducting of first winding element-the second winding conducting of first winding element and the second winding conducting of second winding element-second winding conducting of second winding element and the first winding conducting of first winding element.In conjunction with Fig. 3, four phase windings of motor are divided into four sections conductings in twos that circulate in proper order according to AB-BC-CD-DA, such as AB two phase windings need conducting, and then switch transistor T 2, T1, T5, T4 are closed; Along with rotor motion, next need A phase winding outage and BC two phase windings are open-minded, then the T1 switching tube breaks off, and the T3 switching tube is closed; And the like, next step is the CD phase, it is closed that switch transistor T 4 is broken off T6; Up to conversion four next circulations, so repeatedly, then motor operation.
The technical conceive of the utility model is: winding is connected in twos be distributed in two groups of switching circuits; Each winding element has three switching tubes, and the second switch pipe of each winding element is shared, has saved the quantity of switching tube; Power up the descendant and all can receive full voltage with the winding of conducting, efficient is high.
It is few to the utlity model has switching tube quantity simple in structure, required, and the winding of arbitrary conducting all can receive the advantage of full voltage when powering up.
The described content of this specification embodiment only is enumerating the way of realization of utility model design; The protection range of the utility model should not be regarded as and only limit to the concrete form that embodiment states, the protection range of the utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (3)
1. elevator is dragged the winding switching circuit of quoting the switched reluctance motor power inverter, it is characterized in that: comprise the DC power supply of outside input and two winding elements that are connected in parallel, DC power supply loads on two winding elements; Winding element comprises first winding and second winding that is connected in series; There is and only has a winding energising in each winding element;
An end that links to each other with second winding of first winding is connected the negative terminal of the second switch pipe and second diode, and the other end of second switch pipe connects the positive output end of power supply, and the anode of second diode connects the negative output terminal of power supply; The other end of first winding connects the anode and first switching tube of first diode, and the negative terminal of first diode connects the positive output end of power supply, and the other end of first switching tube connects the negative output terminal of power supply; The other end of second winding connects the anode and the 3rd switching tube of the 3rd diode, and the negative terminal of the 3rd diode connects the positive output end of power supply, and the other end of the 3rd switching tube connects the negative output terminal of power supply.
2.
As claimed in claim 1Elevator is dragged the winding switching circuit of quoting the switched reluctance motor power inverter, it is characterized in that: the winding of two winding elements forms the operation order of four sections conductings in twos that circulate according to multiplicative principle with combining form.
3.
As claimed in claim 2Elevator is dragged the winding switching circuit of quoting the switched reluctance motor power inverter, it is characterized in that: first winding conducting of first winding element and second winding element, the first winding conducting —>First winding conducting of second winding element and first winding element, the second winding conducting —>Second winding conducting of first winding element and second winding element, the second winding conducting —>Second winding conducting of second winding element and the first winding conducting of first winding element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220071284XU CN202455255U (en) | 2012-02-29 | 2012-02-29 | Winding switching circuit of elevator dragging switching magnetoresistance motor power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220071284XU CN202455255U (en) | 2012-02-29 | 2012-02-29 | Winding switching circuit of elevator dragging switching magnetoresistance motor power converter |
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| Publication Number | Publication Date |
|---|---|
| CN202455255U true CN202455255U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220071284XU Expired - Fee Related CN202455255U (en) | 2012-02-29 | 2012-02-29 | Winding switching circuit of elevator dragging switching magnetoresistance motor power converter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953920A (en) * | 2015-07-07 | 2015-09-30 | 东南大学 | SRM (switched reluctance motor) power topological structure for realizing full-voltage bipolar control |
| CN109309469A (en) * | 2018-09-06 | 2019-02-05 | 深圳拓邦股份有限公司 | A kind of cook's machine, controller and two-way current sampling circuit |
| CN111637164A (en) * | 2020-05-21 | 2020-09-08 | 华中科技大学 | Series winding control device and method applied to magnetic suspension bearing |
-
2012
- 2012-02-29 CN CN201220071284XU patent/CN202455255U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953920A (en) * | 2015-07-07 | 2015-09-30 | 东南大学 | SRM (switched reluctance motor) power topological structure for realizing full-voltage bipolar control |
| CN109309469A (en) * | 2018-09-06 | 2019-02-05 | 深圳拓邦股份有限公司 | A kind of cook's machine, controller and two-way current sampling circuit |
| CN111637164A (en) * | 2020-05-21 | 2020-09-08 | 华中科技大学 | Series winding control device and method applied to magnetic suspension bearing |
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Legal Events
| 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: 20120926 Termination date: 20140229 |