CN202978793U - Switched reluctance motor speed adjusting device - Google Patents
Switched reluctance motor speed adjusting device Download PDFInfo
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- CN202978793U CN202978793U CN 201220741292 CN201220741292U CN202978793U CN 202978793 U CN202978793 U CN 202978793U CN 201220741292 CN201220741292 CN 201220741292 CN 201220741292 U CN201220741292 U CN 201220741292U CN 202978793 U CN202978793 U CN 202978793U
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Abstract
The utility model relates to a switched reluctance motor speed adjusting device. The switched reluctance motor speed adjusting device includes a feedback unit, an inversion unit, a feedback reactor assembly, a first contactor, a second contactor, a first transformer, a second transformer, a braking resistor unit and a switching control circuit; a feedback unit power circuit is connected with power grids sequentially through the feedback reactor assembly and the first contactor; a control circuit of the feedback unit is connected with the power grids sequentially through the switching control circuit and the first transformer; the braking resistor unit is connected with a feedback reactor assembly front end through the second contactor; a control power source of the feedback unit and a control power source of the inversion unit are connected with the feedback reactor assembly front end respectively through the second transformer; the switching control circuit is connected with the control power source of the feedback unit, the control circuit of the feedback unit, a control circuit of the inversion unit, a coil of the first contactor and a coil of the second contactor. With the switched reluctance motor speed adjusting device of the utility model adopted, the structure of a system can be simplified, and the problems existing in power supply of the control power sources and other powered equipment in the system under the situation of sudden power outage of the power grids can be solved.
Description
Technical field
The utility model relates to a kind of switched reluctance motor speed adjusting device, especially relates to a kind ofly can solving control power supply under the unexpected outage condition of electrical network and the switched reluctance motor speed adjusting device of intrasystem other power consumption equipment powerup issues.
Background technology
Existing switched reluctance motor speed adjusting device, by feedback reactor, feedback unit, inversion unit, brake unit makes up, and driving switch reluctance motor SRM realizes four quadrant running, and can realize the braking deceleration shutdown under the grid cut-off state.This speed regulating device structure as shown in Figure 1, each unit power circuit connects by positive and negative busbar, cross-over connection filter capacitor C between positive and negative busbar.Wherein feedback unit connects electrical network by feedback reactor, possesses rectification and feedback function; Inversion unit connects motor, the electronic or generator operation of drive motors; Brake unit can carry out energy to bus and discharge under grid cut-off or feedback unit failure condition.
There is following defective in these speed regulating device:
One, discharge for the energy after realizing cutting off the power supply, increased brake unit on the basis of four-quadrant system, it is made of a plurality of parts such as controlling power supply, control circuit, promotion circuit, power circuit, brake resistance, has increased the complexity of system, has reduced reliability;
Although the control Power supply of two or three unit can be taken from dc bus or AC power, or energy storage device, all has limitation.
Three, because mine leather belt or Lifting Convey system are generally the middle pressure (product of 660V～3300V), when controlling power supply and take from dc bus, there is no ready-made product on the DC/DC converter market of middle pressure, need customized development, and the parts selection difficulty is larger, and reliability is low.
Take from AC power (power supplys different from major loop) if four control power supply, whole or partial electric grid outage is controlled power supply and also may be cut off the power supply, and so just can't realize the power-off brake stopping function; When the control power supply is taken from energy storage device, two kinds of battery and electric capacity are generally arranged, if needing independent flame proof (intrinsic safety) structure just can meet mining country peace, the energy storage devices such as employing storage battery mark requirement, technical sophistication realizes that difficulty is large; When adopting capacitance energy storage, quantity is too many, and limited space is difficult to realize placing.
The utility model content
For overcoming defects, the utility model provides a kind of switched reluctance motor speed adjusting device, these speed regulating device have been cancelled the brake unit on the dc bus, take full advantage of the power circuit of feedback unit, simplified hardware configuration, volume is little, and cost is low, reliability is high, has realized simultaneously controlling in the grid cut-off situation supply of power supply.
The switched reluctance motor speed adjusting device that the utility model provides, comprise: feedback unit, inversion unit, feedback reactor assembly, wherein, feedback unit comprises the feedback unit power circuit, inversion unit comprises the inversion unit power circuit, and feedback unit and inversion unit include control circuit, promote circuit and with the control power supply of energy storage device, the feedback unit power circuit connects by positive and negative busbar with the inversion unit power circuit, cross-over connection filter capacitor between positive and negative busbar, inversion unit connects motor; Wherein, this switched reluctance motor speed adjusting device also comprises: the first contactor, the second contactor, the first transformer, the second transformer, brake resistance unit, control switching circuit;
The feedback unit power circuit connects electrical network by feedback reactor assembly, the first contactor successively;
The control circuit of feedback unit connects electrical network by control switching circuit, the first transformer successively;
The brake resistance unit connects feedback reactor assembly front end by the second contactor, and wherein the end that is connected with the first contactor of feedback reactor assembly is called feedback reactor assembly front end;
The control power supply of feedback unit and the control power supply of inversion unit are connected in feedback reactor assembly front end by the second transformer respectively;
The control circuit of the control power supply of control switching circuit and feedback unit, the control circuit of feedback unit, inversion unit, the coil of the first contactor and the coil of contactor of being connected are connected.
Described energy storage device is electric capacity or battery.
Described brake resistance unit adopts star or delta connection.
Described feedback reactor assembly adopts single inductance or adopts inductance and capacitor combination.
Described control switching circuit adopts digital control circuit or analog control circuit.
The switched reluctance motor speed adjusting device that the utility model provides, cancelled the brake unit on the dc bus, take full advantage of the power circuit of feedback unit, realize installing the continuation operation after power cut-off by only increasing brake resistance unit and control switching circuit, at hardware aspect, have volume little, cost is low, the high characteristics of reliability; On the other hand; control switching circuit is used for controlling the operating state of two contactors and feedback unit; the brake resistance unit consumes the energy that feedback unit discharges in the grid cut-off situation; feedback electric energy not only can satisfy the needs of controlling power supply; can also for other alternating current equipment power supply in system, satisfy the needs that system's four quadrant running and power-off brake are shut down simultaneously.
Description of drawings
Fig. 1 is the structural representation of existing switched reluctance motor speed adjusting device;
Fig. 2 is the structural representation of the utility model switched reluctance motor speed adjusting device.
Embodiment
Below in conjunction with drawings and Examples, the utility model is elaborated.
The switched reluctance motor speed adjusting device that the utility model provides, as shown in Figure 2, comprise: feedback unit, inversion unit, feedback reactor assembly, the first contactor (being expressed as contactor 1 in Fig. 2), the second contactor (being expressed as contactor 2 in Fig. 2), the first transformer (being expressed as transformer 1 in Fig. 2), the second transformer (being expressed as transformer 2 in Fig. 2), brake resistance unit, control switching circuit; Wherein, feedback unit comprises the feedback unit power circuit, and inversion unit comprises the inversion unit power circuit, and feedback unit and inversion unit include control circuit, promote circuit and with the control power supply of energy storage device.
The annexation of above-mentioned each circuit, assembly, unit is as follows:
The feedback unit power circuit connects by positive and negative busbar with the inversion unit power circuit, cross-over connection filter capacitor C between positive and negative busbar, and inversion unit connects motor;
The feedback unit power circuit connects electrical network L1, L2, L3 by feedback reactor assembly, contactor 1 successively;
The control circuit of feedback unit connects electrical network L1, L2, L3 by control switching circuit, transformer 1 successively;
The brake resistance unit connects feedback reactor assembly front ends by contactor 2, and wherein the end that is connected with contactor 1 of feedback reactor assembly is called feedback reactor assembly front end;
The control power supply of feedback unit and the control power supply of inversion unit are connected in feedback reactor assembly front end by transformer 2 respectively;
Control switching circuit is connected with the control power supply of feedback unit, the control circuit of feedback unit, the control circuit of inversion unit, the coil that the coil of contactor 1 is connected with contactor.
The energy storage device of the control power supply of each unit is arranged on the front end of controlling power supply, is small-sized energy storage device, can be electric capacity or battery; The supply of controlling power supply in handoff procedure relies on this energy storage device.
The brake resistance unit can adopt star or delta connection.
The feedback reactor assembly can adopt single inductance or adopt inductance and capacitor combination.
Control switching circuit can adopt digital control circuit or analog control circuit.
The workflow of control switching circuit and brake resistance unit matching is as follows:
When electrical network is normal, contactor 1 closure, contactor 2 disconnects, the control circuit of unit and the power supply of power circuit provide by electrical network, mains voltage signal is sent to control switching circuit after by transformer 1 step-down, the control circuit that control switching circuit sends phase sequence and the frequency signal of line voltage to feedback unit strictly according to the facts; When electrical network cuts off the power supply suddenly, be switched control circuit and detect, produce and switch action, make contactor 1 disconnection, contactor 2 closures; After the switching action is complete; the control circuit of control switching circuit notice feedback unit and the control circuit of inversion unit continue to keep the front operating state of outage; control circuit is interchange by the power circuit that promotes the drives feedback unit with the electric energy inversion on dc bus; to controlling power supply and intrasystem other power consumption equipment power supply; unnecessary energy is depleted on the brake resistance unit, realizes that the brake application stoping after grid cut-off is processed.The supply of controlling power supply in handoff procedure relies on the energy storage device of controlling the power supply front end.
In switched reluctance motor speed adjusting device, feedback unit possesses rectification and feedback function, the electronic or generator operation of inversion unit drive motors.The utility model takes full advantage of the power circuit of feedback unit, realizes that by only increasing brake resistance unit and control switching circuit device continues operation after power cut-off, at hardware aspect, has a volume little, and cost is low, the high characteristics of reliability; On the other hand; control switching circuit is used for the operating state of control contactor 1, contactor 2 and feedback unit; the brake resistance unit consumes the energy that feedback unit discharges in the grid cut-off situation; feedback electric energy not only can satisfy the needs of controlling power supply; can also for other alternating current equipment power supply in system, satisfy the needs that system's four quadrant running and power-off brake are shut down simultaneously.
It should be noted that at last: above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to previous embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (5)
1. switched reluctance motor speed adjusting device, comprise: feedback unit, inversion unit, feedback reactor assembly, wherein, feedback unit comprises the feedback unit power circuit, inversion unit comprises the inversion unit power circuit, and feedback unit and inversion unit include control circuit, promote circuit and with the control power supply of energy storage device, the feedback unit power circuit connects by positive and negative busbar with the inversion unit power circuit, cross-over connection filter capacitor between positive and negative busbar, inversion unit connects motor; It is characterized in that, this switched reluctance motor speed adjusting device also comprises: the first contactor, the second contactor, the first transformer, the second transformer, brake resistance unit, control switching circuit;
The feedback unit power circuit connects electrical network by feedback reactor assembly, the first contactor successively;
The control circuit of feedback unit connects electrical network by control switching circuit, the first transformer successively;
The brake resistance unit connects feedback reactor assembly front end by the second contactor, and wherein the end that is connected with the first contactor of feedback reactor assembly is called feedback reactor assembly front end;
The control power supply of feedback unit and the control power supply of inversion unit are connected in feedback reactor assembly front end by the second transformer respectively;
The control circuit of the control power supply of control switching circuit and feedback unit, the control circuit of feedback unit, inversion unit, the coil of the first contactor and the coil of contactor of being connected are connected.
2. switched reluctance motor speed adjusting device according to claim 1, is characterized in that, described energy storage device is electric capacity or battery.
3. switched reluctance motor speed adjusting device according to claim 1, is characterized in that, described brake resistance unit employing star or delta connection.
4. switched reluctance motor speed adjusting device according to claim 1, is characterized in that, described feedback reactor assembly adopts single inductance or adopts inductance and capacitor combination.
5. switched reluctance motor speed adjusting device according to claim 1, is characterized in that, described control switching circuit adopts digital control circuit or analog control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741292 CN202978793U (en) | 2012-12-28 | 2012-12-28 | Switched reluctance motor speed adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741292 CN202978793U (en) | 2012-12-28 | 2012-12-28 | Switched reluctance motor speed adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202978793U true CN202978793U (en) | 2013-06-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220741292 Expired - Fee Related CN202978793U (en) | 2012-12-28 | 2012-12-28 | Switched reluctance motor speed adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202978793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904964A (en) * | 2012-12-28 | 2014-07-02 | 北京中纺锐力机电有限公司 | Switched reluctance motor speed adjusting device |
-
2012
- 2012-12-28 CN CN 201220741292 patent/CN202978793U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904964A (en) * | 2012-12-28 | 2014-07-02 | 北京中纺锐力机电有限公司 | Switched reluctance motor speed adjusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NIDEC (BEIJING) DRIVE SYSTEM TECHNIQUE CO., LTD. Free format text: FORMER OWNER: BEIJING CHINA TEX MECHANICAL + ELECTRICAL ENGINEERING LTD. Effective date: 20150713 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150713 Address after: 101102 Beijing, Tongzhou District Sheng King South Street, No. 13, No. 101, 201-1, 301, 15, Patentee after: Nideke (Beijing) Transmission Technology Co. Ltd Address before: 101102, Beijing, Zhongguancun science and Technology Park, Jinqiao Science and technology industrial base, 15 South four street, 16A, Tongzhou District Patentee before: Beijing China Tex Mechanical & Electrical Engineering Ltd. |
|
| 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: 20130605 Termination date: 20171228 |