CN103916059B - Switched-reluctance-motor speed adjusting device - Google Patents
Switched-reluctance-motor speed adjusting device Download PDFInfo
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- CN103916059B CN103916059B CN201210592064.6A CN201210592064A CN103916059B CN 103916059 B CN103916059 B CN 103916059B CN 201210592064 A CN201210592064 A CN 201210592064A CN 103916059 B CN103916059 B CN 103916059B
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Abstract
The invention relates to a switched-reluctance-motor speed adjusting device. The switched-reluctance-motor speed adjusting device includes a feedback unit or a rectifier bridge, an inversion unit, a braking unit, a power supplying unit, a power supply switching circuit and a transformer. A feedback unit power circuit is connected with a power grid through a feedback reactor or the rectifier bridge is directly connected with the power grid; the feedback unit power circuit or the rectifier bridge is connected with an inversion unit power circuit through positive and negative buses; a filtering capacitor is connected between the positive and negative busses in a bridging manner; a braking unit power circuit is connected in parallel with two ends of the filtering capacitor; the inversion unit is connected with a motor; the power supplying unit is connected with the braking unit; a control power supply of the feedback unit, a control power supply of the braking unit and a control power supply of the inversion unit are respectively connected to the transformer and the power supplying unit through the power supply switching circuit; and the transformer is connected to the power grid. With the switched-reluctance-motor speed adjusting device, problems which exists in power supplying of the control power supplies when a system performs braking working after the outage of the power grid can be solved; and the switched-reluctance-motor speed adjusting device only needs to be modified simply on the basis of the prior device so that cost is low and reliability is high.
Description
Technical field
The present invention relates to a kind of switched reluctance motor speed adjusting device, especially relate to Braking system work after grid cut-off
When be capable of controlling the switched reluctance motor speed adjusting device powered of power supply.
Background technology
Typically, the switched reluctance motor speed adjusting device driving switch reluctance motor with brake unit can realize four-quadrant
Run, and the braking deceleration being capable of under grid cut-off state is shut down.A kind of conventional four-quadrant switches reluctance motor
Arrangements for speed regulation, structure chart is as shown in figure 1, rectifier bridge is connected by positive and negative busbar with inversion unit power circuit, between positive and negative busbar
Bridging filter capacitor.Rectifier bridge realizes the rectification to alternating current power supply, and inversion unit connects motor, and motor SRM is electronic or sends out
Electricity runs；Brake unit can carry out energy release to bus in the case of electric power generation operation or grid cut-off.
Long-time generator operation in order to realize device has power-off brake function concurrently again, and proposition one kind is improved again later opens
Close reluctance motor arrangements for speed regulation, structure chart is as shown in Fig. 2 each unit power circuit is connected by positive and negative busbar, between positive and negative busbar
Bridging filter capacitor.Wherein feedback unit connects electrical network by feedback reactor, possesses rectification and feedback function；Inversion unit is even
Connect motor, motor SRM is electronic or generator operation；Brake unit can be right under grid cut-off or feedback unit failure condition
Bus carries out energy release.This arrangements for speed regulation increased brake unit on the basis of the arrangements for speed regulation shown in Fig. 1, and it is by controlling
The some such as power supply, control circuit, promotion circuit, power circuit, braking resistor are constituted, and increased the complexity of system,
Reduce reliability.
Additionally, also jointly there is following defect in the arrangements for speed regulation shown in Fig. 1 and Fig. 2：
Although the control power supply of one or three units is powered and can be taken from dc bus or alternating current power supply, or energy storage device,
It is respectively provided with limitation.
2nd, due to mine leather belt or generally middle pressure (660V～3300V) product of Lifting Convey system, take when controlling power supply
From dc bus when, the DC/DC changer market of middle pressure does not have ready-made product, needs customized development, and parts selection is difficult
Degree is larger, and reliability is low.
If three control power supplys take from alternating current power supply (power supplys different from major loop), whole or partial electric grid power-off, control
Power supply is likely to power-off, thus cannot realize power-off brake stopping function；When controlling power supply to take from energy storage device, typically have
Battery and two kinds of electric capacity, need single flame proof (intrinsic safety) structure just can meet mining country according to energy storage devices such as accumulator
Peace mark requires, and technical sophistication realizes difficulty big；When adopting capacitance energy storage, quantity is too many, and limited space is difficult to realize placing.
Content of the invention
For overcoming drawbacks described above, the invention provides a kind of switched reluctance motor speed adjusting device, can solve the problem that grid cut-off
The difficult problem that control power supply during Braking system work is powered afterwards, and only need to do simple transformation, cost on the basis of existing apparatus
Low, reliability is high.
The switched reluctance motor speed adjusting device that the present invention provides, including：Feedback unit or rectifier bridge, inversion unit, braking
Unit, wherein, feedback unit includes feedback unit power circuit, and inversion unit includes inversion unit power circuit, brake unit
Including braking resistor and brake unit power circuit, feedback unit, inversion unit and brake unit respectively further comprise control circuit,
Control power supply and promote circuit；When this switched reluctance motor speed adjusting device adopts feedback unit, this switched reluctance machines speed governing
Device also includes feedback reactor, and feedback unit power circuit connects electrical network, feedback unit power circuit by feedback reactor
It is connected by positive and negative busbar with inversion unit power circuit；When this switched reluctance motor speed adjusting device adopts rectifier bridge, rectification
Bridge is directly connected to electrical network, and rectifier bridge is connected by positive and negative busbar with inversion unit power circuit；Filtered electrical is bridged between positive and negative busbar
Hold；Brake unit power circuit is connected to the two ends of filter capacitor；Inversion unit connects motor；Wherein, this switched reluctance machines
Arrangements for speed regulation also include：Power supply power supply unit, power supply switch circuit, transformator；Power supply power supply unit connects brake unit；Feedback
Control power supply and the control power supply of inversion unit that control power supply, brake unit of unit are connected respectively by power supply switch circuit
In transformator, power supply power supply unit；Transformator connects electrical network.
Described brake unit power circuit adopts IGBT to constitute, and one end connects positive bus-bar, and the other end is by braking resistor even
Connect negative busbar.
Described power supply power supply unit includes mains transformer, commutation diode and filter capacitor, and mains transformer former limit is even
Connect braking resistor, with electric capacity and connect after mains transformer secondary series diode.
Described power supply switch circuit adopts analog control circuit or digital control circuit to constitute with catalyst or relay.
Described digital control circuit is made up of PLC, single-chip microcomputer, one or more of DSP, ARM combination.
Described feedback reactor using single inductance or adopts inductance and capacitor combination.
The switched reluctance motor speed adjusting device that the present invention provides passes through to increase power supply switch circuit, and it is single to be connected to braking
The power supply power supply unit of unit, after grid cut-off, brake unit is started working, and power supply power supply unit internal electric source transformator will be braked
High pressure in braking resistor in unit is changed into low pressure, after rectification, by power supply switch circuit to controlling power supply to power, thus solving
The difficult problem that power supply powers of controlling during Braking system work after grid cut-off, and only need to do simple on the basis of existing apparatus
Transformation, low cost, reliability are high.
Brief description
Fig. 1 is a kind of structural representation of existing switched reluctance motor speed adjusting device；
Fig. 2 is the structural representation of existing another kind switched reluctance motor speed adjusting device；
Fig. 3 is the structural representation of switched reluctance motor speed adjusting device embodiment one of the present invention；
Fig. 4 is the structural representation of switched reluctance motor speed adjusting device embodiment two of the present invention.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
The switched reluctance motor speed adjusting device embodiment one that the present invention provides, as shown in figure 3, include：Rectifier bridge, inversion list
Unit, brake unit, power supply source power supply unit, power supply switch circuit, transformator (being expressed as transformator 1 in Fig. 4), wherein, feedback
Unit includes feedback unit power circuit, and inversion unit includes inversion unit power circuit, brake unit include braking resistor and
Brake unit power circuit, feedback unit, inversion unit and brake unit respectively further comprise control circuit, control power supply and promotion
Circuit.Each circuit in this embodiment, module, unit annexation as follows：Rectifier bridge is passed through with inversion unit power circuit
Positive and negative busbar connects；Filter capacitor C is bridged between positive and negative busbar；Brake unit power circuit is connected to the two ends of filter capacitor C；Inverse
Become unit and connect motor SRM；Power supply power supply unit connects brake unit；The control power supply of feedback unit, the control of brake unit
The control power supply of power supply and inversion unit is connected to transformator 1, power supply power supply unit by power supply switch circuit；Transformator
1 connection electrical network.
The switched reluctance motor speed adjusting device embodiment two that the present invention provides, as shown in figure 4, include：Feedback reactor, return
Feedback unit, inversion unit, brake unit, power supply power supply unit, power supply switch circuit, transformator (Fig. 3 is expressed as transformator 1)；
Wherein, feedback unit includes feedback unit power circuit, and inversion unit includes inversion unit power circuit, and brake unit includes making
Galvanic electricity resistance and brake unit power circuit, feedback unit, inversion unit and brake unit respectively further comprise control circuit, control electricity
Source and promotion circuit.Each circuit in this embodiment, module, unit annexation as follows：Feedback unit power circuit passes through
Feedback reactor connects electrical network L1, L2, L3, and feedback unit power circuit is with inversion unit power circuit by positive and negative busbar even
Connect；Filter capacitor C is bridged between positive and negative busbar；Brake unit power circuit is connected to the two ends of filter capacitor C；Inversion unit connects
Motor SRM；Power supply power supply unit connects brake unit；The control power supply of feedback unit, the control power supply of brake unit and inversion
The control power supply of unit is connected to transformator 1, power supply power supply unit by power supply switch circuit；Transformator 1 connects electrical network.
Composition and working principle the following detailed description of unit：
Brake unit, by braking resistor, brake unit power circuit, promotes circuit, control circuit to constitute, brake unit work(
Rate circuit adopts IGBT to constitute, and one end connects positive bus-bar, and the other end connects negative busbar by braking resistor.Control when brake unit
Electric circuit inspection processed raises to busbar voltage when there is power cut-off or feedback unit fault simultaneously, produces PWM (pulsewidth modulation) and cuts
Wave control signal, drives IGBT on, off, by unnecessary energy expenditure on bus to braking resistor.Feedback reactor electricity
Play reduction harmonic wave effect when dynamic, during braking, feedback current is filtered.
Inversion unit by inversion unit power circuit, promotion circuit, control circuit and controls electric power generating composition, is opened according to driving
Close reluctance motor type, inversion unit power circuit can be single-phase or heterogeneous structure.When motor powered is run, inversion unit
Control circuit produces Electronic control signal by the rotor relative position of detection switch reluctance motor, in motor inductances rising area
Between by promote drives power circuit machine winding is powered, electric energy is converted to mechanical energy；When motor braking runs, inversion
The control circuit of unit produces brake control signal by the rotor relative position of detection switch reluctance motor, in motor inductances
Last transition is passed through to promote drives power circuit to machine winding excitation, and mechanical energy is converted to electric energy, and inversion unit is by electricity
Machine generates electricity and is converted to direct current energy to dc bus charging.
Feedback unit by feedback unit power circuit, promotion circuit, control circuit and controls electric power generating composition, feedback unit work(
Rate circuit adopts IGBT to constitute bridge architecture, can be single-phase or multiphase according to connect power supply type.When motor powered is run, with
IGBT diode in parallel plays the effect of rectifier bridge；During running under braking, control circuit detects busbar voltage and raises, and sends feedback
Drive signal, drives power circuit work through promoting, by the DC current on bus according to inlet wire AC network after circuit transformations
Voltage phase sequence is reverse into alternating current feedback grid.
Power supply power supply unit includes mains transformer (being expressed as mains transformer T1 in Fig. 3, Fig. 4), commutation diode D1
And filter capacitor C1, mains transformer T1 former limit connects braking resistor, with electricity after mains transformer T1 secondary series diode D1
Hold C1 and connect.Voltage in braking resistor can be carried out blood pressure lowering, rectification and filtering by power supply power supply unit, be connected to power supply switching
Circuit.
Power supply switch circuit adopts analog control circuit or digital control circuit to form with catalyst, and catalyst can also change
For relay.
If power supply switch circuit adopts digital control circuit, digital control circuit can be by PLC, single-chip microcomputer, DSP, ARM
One or more of combination constitute.
Feedback reactor using single inductance or adopts inductance and capacitor combination.
The workflow of power supply switch circuit and the cooperation of power supply power supply unit is as follows：
When electrical network is normal, the control circuit of each unit and the power supply of power circuit are provided by electrical network, and line voltage passes through
Send into power supply switch circuit after transformator 1 blood pressure lowering to power to control power supply；When the unexpected power-off of electrical network, brake unit starts work
Make, power supply power supply unit is connected to the control power supply of each unit by power supply switch circuit, now control power supply to be powered list by power supply
Unit's power supply.
The present invention passes through to increase power supply switch circuit, and is connected to the power supply power supply unit of brake unit, grid cut-off
Afterwards, brake unit is started working, and the high pressure in braking resistor in brake unit is changed into low by power supply power supply unit internal transformer
Pressure, after rectification, by power supply switch circuit to controlling power supply to power, thus solve during Braking system work after grid cut-off
Control the difficult problem that power supply is powered, and only need to do simple transformation on the basis of existing apparatus, low cost, reliability are high.
Finally it should be noted that：Above example only in order to technical scheme to be described, is not intended to limit；Although
With reference to the foregoing embodiments the present invention is described in detail, it will be understood by those within the art that：It still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to wherein some technical characteristics；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (4)
1. a kind of switched reluctance motor speed adjusting device, including：Feedback unit or rectifier bridge, inversion unit, brake unit, wherein,
Feedback unit includes feedback unit power circuit, and inversion unit includes inversion unit power circuit, and brake unit includes braking electricity
Resistance and brake unit power circuit, feedback unit, inversion unit and brake unit respectively further comprise control circuit, control power supply and
Promote circuit；
When this switched reluctance motor speed adjusting device adopts feedback unit, this switched reluctance motor speed adjusting device also includes feedback electricity
Anti- device, feedback unit power circuit connects electrical network, feedback unit power circuit and inversion unit power electricity by feedback reactor
Road is connected by positive and negative busbar；
When this switched reluctance motor speed adjusting device adopts rectifier bridge, rectifier bridge is directly connected to electrical network, rectifier bridge and inversion unit
Power circuit is connected by positive and negative busbar；
Filter capacitor is bridged between positive and negative busbar；
Brake unit power circuit is connected to the two ends of filter capacitor；
Inversion unit connects motor；
It is characterized in that, this switched reluctance motor speed adjusting device also includes：Power supply power supply unit, power supply switch circuit, transformator；
Power supply power supply unit connects brake unit；The control controlling power supply and inversion unit controlling power supply, brake unit of feedback unit
Power supply processed is connected to transformator, power supply power supply unit by power supply switch circuit；Transformator connects electrical network；Wherein,
Described brake unit power circuit adopts IGBT to constitute, and one end connects positive bus-bar, and the other end is connected negative by braking resistor
Bus；
Described power supply power supply unit includes mains transformer, commutation diode and filter capacitor, and mains transformer former limit connects system
Galvanic electricity hinders, with electric capacity and connect after transformer secondary series diode；
After grid cut-off, the high pressure in braking resistor in brake unit is changed into low by power supply power supply unit internal electric source transformator
Pressure, after rectification, is powered to control power supply by power supply switch circuit.
2. switched reluctance motor speed adjusting device according to claim 1 is it is characterised in that described power supply switch circuit adopts
Analog control circuit or digital control circuit are constituted with catalyst or relay.
3. switched reluctance motor speed adjusting device according to claim 2 it is characterised in that described digital control circuit by
PLC, single-chip microcomputer, one or more of DSP, ARM combination are constituted.
4. switched reluctance motor speed adjusting device according to claim 1 is it is characterised in that described feedback reactor is using single
Inductance or adopt inductance and capacitor combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210592064.6A CN103916059B (en) | 2012-12-28 | 2012-12-28 | Switched-reluctance-motor speed adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210592064.6A CN103916059B (en) | 2012-12-28 | 2012-12-28 | Switched-reluctance-motor speed adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103916059A CN103916059A (en) | 2014-07-09 |
| CN103916059B true CN103916059B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210592064.6A Expired - Fee Related CN103916059B (en) | 2012-12-28 | 2012-12-28 | Switched-reluctance-motor speed adjusting device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106301000B (en) * | 2016-08-11 | 2018-11-23 | 珠海格力电器股份有限公司 | Inverter and its control unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1679224A (en) * | 2002-08-30 | 2005-10-05 | 三垦电气株式会社 | Switching power source device |
| CN2802842Y (en) * | 2005-05-31 | 2006-08-02 | 北京中纺锐力机电有限公司 | Power-off brake controller of speed regulating system of switch reluctance motor |
| CN101286726A (en) * | 2008-06-12 | 2008-10-15 | 杭州西子孚信科技有限公司 | Driving device for electric machine and control method for driving motor |
| CN202334435U (en) * | 2011-11-16 | 2012-07-11 | 北京中纺锐力机电有限公司 | Novel switched reluctance motor speed adjusting device |
| CN202978794U (en) * | 2012-12-28 | 2013-06-05 | 北京中纺锐力机电有限公司 | Switched reluctance motor speed adjusting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5789952B2 (en) * | 2010-10-21 | 2015-10-07 | 株式会社デンソー | Motor control device |
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2012
- 2012-12-28 CN CN201210592064.6A patent/CN103916059B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1679224A (en) * | 2002-08-30 | 2005-10-05 | 三垦电气株式会社 | Switching power source device |
| CN2802842Y (en) * | 2005-05-31 | 2006-08-02 | 北京中纺锐力机电有限公司 | Power-off brake controller of speed regulating system of switch reluctance motor |
| CN101286726A (en) * | 2008-06-12 | 2008-10-15 | 杭州西子孚信科技有限公司 | Driving device for electric machine and control method for driving motor |
| CN202334435U (en) * | 2011-11-16 | 2012-07-11 | 北京中纺锐力机电有限公司 | Novel switched reluctance motor speed adjusting device |
| CN202978794U (en) * | 2012-12-28 | 2013-06-05 | 北京中纺锐力机电有限公司 | Switched reluctance motor speed adjusting device |
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| CN103916059A (en) | 2014-07-09 |
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Owner name: NIDEC (BEIJING) DRIVE SYSTEM TECHNIQUE CO., LTD. Free format text: FORMER OWNER: BEIJING CHINA TEX MECHANICAL + ELECTRICAL ENGINEERING LTD. Effective date: 20150703 |
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Effective date of registration: 20150703 Address after: 101102 Beijing, Tongzhou District Sheng King South Street, No. 13, No. 101, 201-1, 301, 15, Applicant after: Nidec (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 Applicant before: Beijing China Tex Mechanical & Electrical Engineering Ltd. |
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Granted publication date: 20170222 Termination date: 20211228 |