CN107196575A - A kind of switched reluctance motor current transformer and its control method - Google Patents
A kind of switched reluctance motor current transformer and its control method Download PDFInfo
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- CN107196575A CN107196575A CN201710572532.6A CN201710572532A CN107196575A CN 107196575 A CN107196575 A CN 107196575A CN 201710572532 A CN201710572532 A CN 201710572532A CN 107196575 A CN107196575 A CN 107196575A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 42
- 239000003990 capacitor Substances 0.000 claims abstract description 29
- 238000010276 construction Methods 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
- H02P25/092—Converters specially adapted for controlling reluctance motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
A kind of switched reluctance motor current transformer and its control method, current transformer is combined by two inductance, six diodes, five switching tubes, three capacitors, three-phase windings, the wide scope regulation of power supply voltage is realized in the switch control of first switch pipe and second switch pipe, first capacitor can effectively accelerate phase winding switch off current speed, whole system is simple in construction vdiverse in function, only by a switching tube it is PWM control modes during the following operating mode of ultrahigh speed, reduces switching loss；The current transformer of the present invention is very suitable for applying in the high motor speed governing system of wide velocity interval, high efficiency demand, cost performance.
Description
Technical field
The present invention relates to switched reluctance machines field, and in particular to one kind realizes supply voltage wide scope by hardware circuit
Regulation and simple convertor circuit simultaneously can rapidly switch off the switched reluctance motor current transformer and its simple control model of electric current.
Background technology
Switched reluctance motor is simple in construction firm, and without winding, without permanent magnet on rotor, cost is low, should with wide
Use prospect.
Switched reluctance motor can not self-starting and operation, and current transformer be its start and operation maincenter.
Traditional asymmetrical half-bridge formula current transformer, switching tube is large number of, complicated.
Switched reluctance motor operation be according to the real-time position information of rotor relative stator what each winding was powered respectively,
So that it is guaranteed that producing forward torque, and to that must be rapidly switched off during shut-off, prevent opposing torque i.e. braking moment, but phase
Winding is due to equivalent to one inductance element, the path that discharged during shut-off to the magnetic energy one of its storage, so often to carry
Preceding shut-off connects the switching tube of the phase winding, in favor of the release of energy storage, and electric current when otherwise energy storage discharges can produce braking and turn
Square.
The control mode of switched reluctance motor, main flow have electric current PWM, voltage pwm, switching angle control three classes, preceding two
Class greatly increases the switching loss of switching tube, the latter then add the complexity of control system, it is necessary to very long computing when
Between, occasion especially is run in face of ultrahigh speed, the requirement to controller is very high.
Switched reluctance motor compares adaptation high-speed cruising in itself, in order to adapt to friction speed requirement, to governing system
It is required that in, broader speed adjustable range is that industry is expected.
The content of the invention
According to more than background technology, present invention proposes a kind of convertor circuit it is simple in construction, rapidly switch off phase current,
The wide scope regulating power source voltage of low switching losses is so as to the switched reluctance motor current transformer and its controlling party of a wide range of speed governing
Method.
The technical scheme is that：
A kind of switched reluctance motor current transformer, by two inductance, six diodes, five switching tubes, three capacitors,
Three-phase windings are constituted, and its technical characteristic is that described first inductance one end is connected with first diode cathode, and is used as unsteady flow
The positive pole of device input DC power, the first inductance other end connects the first switch tube anode and second diode sun
Pole, the second diode cathode connects second capacitor anode and the second switch tube anode, and second switch tube cathode connects
Connect described second inductance one end and the 3rd diode cathode, the 3rd diode anode connect the 3rd capacitor anode,
The 3rd switch tube cathode, the 4th switch tube cathode, the 5th switch tube cathode, the 3rd switch tube anode connection institute
First phase winding one end and the 4th diode anode are stated, the 4th switch tube anode connects described second phase winding one end and institute
The 5th diode anode is stated, the 5th switch tube anode connects described third phase winding one end and the 6th diode anode, the
It is cloudy that one diode anode connects first capacitor anode, the 4th diode cathode, the 5th diode cathode, the 6th diode
Pole, the first capacitor anode connection first switch tube cathode, the second capacitor anode, the second inductance other end, the 3rd capacitor
Positive pole, the first phase winding other end, the second phase winding other end, the third phase winding other end, and it is used as current transformer input direct-current
The negative pole of power supply.
A kind of control method of switched reluctance motor current transformer, it is characterized in that, refer to the switch controlling party of five switching tubes
Method；Wherein the switch control of first switch pipe and second switch pipe, is specifically divided into four kinds of mode of operations：
(1) first switch pipe off-state, second switch pipe copped wave PWM control modes and dutycycle be less than two/
One；
(2) first switch pipe off-state, second switch pipe copped wave PWM control modes and dutycycle be equal to two/
One；
(3) first switch pipe off-state, second switch pipe copped wave PWM control modes and dutycycle be more than two/
One；
(4) first switch pipe copped wave PWM control modes, second switch pipe copped wave PWM control modes and dutycycle is more than
1/2nd；
3rd switching tube, the 4th switching tube, the 5th switching tube are simple venation ripple control mode, i.e., according to switched reluctance motor
Rotor position information, when judging which phase winding needs power supply, the switching tube closure conducting of series connection with it is treated according to rotor-position
The information phase winding, which is powered, to be finished, then disconnects the switching tube.
The technique effect of the present invention mainly has：
(1) relatively conventional asymmetrical half-bridge formula current transformer, this invention simplifies structure, has saved cost；
The decrease speed of electric current when (2) first capacitor voltage at both ends accelerate phase winding shut-off, it is to avoid enter braking area,
The shut-off moment is delayed so as to relative, exerting oneself for motor is added, also increases the efficiency of electric motor system；
(3) when the first capacitor voltage at both ends exceedes the supply voltage of input, system can be improved to its reverse energy regenerative
Electric energy effective rate of utilization；
(4) current transformer of the invention so as to save cost, simplifies structure, alleviates weight without isolation link；
The auxiliary of (5) first capacitors is quickly dropped during stream, without switch controlled, alleviates the complexity of control
Degree, improves reliability, has saved cost；
(6) switching mode of first switch pipe and second switch pipe is suitable for broader switched reluctance motor speed regulation
Scope, can give full play to the advantage of switched reluctance motor high-speed cruising, widely applicable；
(7) the 3rd switching tube connected with phase winding, the 4th switching tube, the 5th switching tube are without copped wave or PWM controlling parties
Formula, also only PWM mode control is done using simple venation wave mode, and when below ultrahigh speed by one switching tube of second switch pipe
System, so that system-wide switching loss is greatly reduced, and the more advantages of phase winding quantity are more obvious；
(8) the present invention current transformer and its control model under, switching angle can be fixed, without high speed during use switching angle
Control mode, simplifies the complexity of control, improves reliability.
Brief description of the drawings
Fig. 1 show the switched reluctance motor converter circuit arrangement figure of the present invention.
Embodiment
A kind of switched reluctance motor current transformer, as shown in Figure 1, by two inductance, six diodes, five switches
Pipe, three capacitors, three-phase windings compositions, first inductance L1 one end is connected with the first diode D1 negative electrodes, and is used as current transformer
The positive pole of input DC power, first inductance L1 other ends connection first switch pipe V1 anodes and the second diode D2 anodes, the
Two diode D2 negative electrodes connect the second capacitor C2 positive poles and second switch pipe V2 anodes, second switch pipe V2 negative electrodes connection second
Inductance L2 one end and the 3rd diode D3 negative electrodes, the 3rd diode D3 anodes connect the 3rd capacitor C3 negative poles, the 3rd switching tube
V3 negative electrodes, the 4th switching tube V4 negative electrodes, the 5th switching tube V5 negative electrodes, the 3rd switching tube V3 anodes connect first phase winding A one end
With the 4th diode D4 anodes, the 4th switching tube V4 anodes connect second phase winding B one end and the 5th diode D5 anodes, the 5th
Switching tube V5 anodes connect third phase winding C one end and the 6th diode D6 anodes, the electricity of the first diode D1 anodes connection first
Container C1 positive poles, the 4th diode D4 negative electrodes, the 5th diode D5 negative electrodes, the 6th diode D6 negative electrodes, the first capacitor C1 are born
Pole connection first switch pipe V1 negative electrodes, the second capacitor C2 negative poles, the second inductance L2 other ends, the 3rd capacitor C3 positive poles, the
The one phase winding A other ends, the second phase winding B other ends, the third phase winding C other ends, and it is used as current transformer input DC power
Negative pole.
U1 is the DC power supply voltage of the switched reluctance motor in accompanying drawing 1.
A kind of control method of switched reluctance motor current transformer, refers to the method for controlling switch of five switching tubes, wherein
First switch pipe V1 and second switch pipe V2 switch control, are specifically divided into four kinds of mode of operations：
(1) first switch pipe V1 off-states, second switch pipe V2 copped wave PWM control modes and dutycycle are less than two points
One of；In this mode, i.e. first switch pipe V1 dutycycles are zero, according to the 3rd capacitor C3 both end voltages UC3 and input
Voltage U1 relational expression：
α in formula (1)v1And αv2Respectively first switch pipe V1 and second switch pipe V2 dutycycle；
Under (1) mode of operation, actual power voltage is that UC3 will be less than U1, and switched reluctance motor is transported positioned at low speed
Row region；
(2) first switch pipe V1 off-states, second switch pipe V2 copped wave PWM control modes and αv2=1/2；First opens
It is α to close pipe V1 disconnectionsv1=0, the pattern under UC3=U1 visible according to formula (1), switched reluctance motor are located at base speed operation work
Condition；
(3) first switch pipe V1 off-states are αv1=0, second switch pipe V2 copped wave PWM control modes and αv2＞ 1/
2；According to UC3 ＞ U1 under this visible pattern of formula (1), switched reluctance motor is located at high-speed cruising region；
(4) first switch pipe V1 copped waves PWM control modes, second switch pipe V2 copped wave PWM control modes and αv2＞ 1/
2；UC3 ＞ ＞ U1 under this pattern, switched reluctance motor is located at ultrahigh speed region；
According to switched reluctance motor rotor position information, when detecting needs the first phase winding A energizations, the 3rd switch
Pipe V3 closure conductings, form C3-A-V3-C3 current supply circuit, then the 4th switching tube V4 is closed for corresponding second phase winding B energizations
Conducting, third phase winding C energizations then the 5th switching tube V5 closures conducting；3rd switching tube V3, the 4th switching tube V4, the 5th switch
Pipe V5 is simple venation ripple control mode, i.e., according to switched reluctance motor rotor position information, judges which phase winding needs confession
When electric, the closure conducting of the switching tube of series connection with it, treating to be powered according to the rotor position information phase winding finishes, then disconnects this and open
Guan Guan；Disconnect after the switching tube, the phase winding magnetic energy of series connection with it is shifted to the first capacitor C1, and now due to having first
The effect of capacitor C1 terminal voltages, disconnecting phase winding electric current after the switching tube quickly will drop to zero, it is to avoid enter brake area.
On the work of the converter part between UC3 and U1, when first switch pipe V1 is remained off, second opens
The second inductance L2 is electrically charged when closing pipe V2 closure conducting, and the second inductance L2 electric energy is to the 3rd capacitor when second switch pipe V2 disconnects
C3 and the release of energization phase winding；When first switch pipe V1 switchs control by PWM mode, when it closes conducting, U1 is via first
Switching tube V1 is charged to the first inductance L1, and U1 and the first inductance L1 energy storage is powered through second switch pipe V2 jointly when it disconnects.
Claims (2)
1. a kind of switched reluctance motor current transformer, by two inductance, six diodes, five switching tubes, three capacitors, three
Phase winding is constituted, and its technical characteristic is that described first inductance one end is connected with first diode cathode, and is used as current transformer
The positive pole of input DC power, the first inductance other end connects the first switch tube anode and second diode anode,
Second diode cathode connects second capacitor anode and the second switch tube anode, second switch tube cathode connection institute
State second inductance one end and the 3rd diode cathode, the 3rd diode anode connects the 3rd capacitor anode, described
3rd switch tube cathode, the 4th switch tube cathode, the 5th switch tube cathode, the 3rd switch tube anode connection described the
One phase winding one end and the 4th diode anode, the 4th switch tube anode connect described second phase winding one end and described the
Five diode anodes, the 5th switch tube anode connects described third phase winding one end and the 6th diode anode, the one or two
Pole pipe anode connects first capacitor anode, the 4th diode cathode, the 5th diode cathode, the 6th diode cathode,
First capacitor anode connection first switch tube cathode, the second capacitor anode, the second inductance other end, the 3rd capacitor are just
Pole, the first phase winding other end, the second phase winding other end, the third phase winding other end, and it is used as current transformer input dc power
The negative pole in source.
2. a kind of control method of switched reluctance motor current transformer, it is characterized in that, refer to the method for controlling switch of five switching tubes；
Wherein the switch control of first switch pipe and second switch pipe, is specifically divided into four kinds of mode of operations：
(1) first switch pipe off-state, second switch pipe copped wave PWM control modes and dutycycle are less than 1/2nd；
(2) first switch pipe off-state, second switch pipe copped wave PWM control modes and dutycycle are equal to 1/2nd；
(3) first switch pipe off-state, second switch pipe copped wave PWM control modes and dutycycle are more than 1/2nd；
(4) first switch pipe copped wave PWM control modes, second switch pipe copped wave PWM control modes and dutycycle are more than two points
One of；
3rd switching tube, the 4th switching tube, the 5th switching tube are simple venation ripple control mode, i.e., according to switched reluctance motor rotor
Positional information, when judging which phase winding needs power supply, the switching tube closure conducting of series connection with it is treated according to rotor position information
The phase winding, which is powered, to be finished, then disconnects the switching tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710572532.6A CN107196575B (en) | 2017-07-06 | 2017-07-06 | Switch reluctance motor converter and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710572532.6A CN107196575B (en) | 2017-07-06 | 2017-07-06 | Switch reluctance motor converter and control method thereof |
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| CN107196575A true CN107196575A (en) | 2017-09-22 |
| CN107196575B CN107196575B (en) | 2020-06-26 |
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| CN201710572532.6A Active CN107196575B (en) | 2017-07-06 | 2017-07-06 | Switch reluctance motor converter and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098769A (en) * | 2018-01-31 | 2019-08-06 | 英飞凌科技股份有限公司 | The discharge technology of magnet exciting coil |
| CN110677083A (en) * | 2019-10-17 | 2020-01-10 | 中国计量大学 | Direct-boost excitation switched reluctance generator current conversion system |
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| WO2011004546A1 (en) * | 2009-07-10 | 2011-01-13 | Three Eye Co., Ltd. | Reluctance motor apparatus |
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| CN104638991A (en) * | 2015-01-28 | 2015-05-20 | 江苏大学 | Double-bus power converter for inhibiting torque pulsation of switched reluctance motor and control method thereof |
| CN204361951U (en) * | 2014-12-30 | 2015-05-27 | 中国计量学院 | Switchette magnetic resistance wind-driven generator half self-excitation up-down voltage power converter topology |
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| CN205883097U (en) * | 2016-06-24 | 2017-01-11 | 姜坚波 | Encourage switched reluctance generator transformer soon and press power converter |
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2017
- 2017-07-06 CN CN201710572532.6A patent/CN107196575B/en active Active
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| US20050062452A1 (en) * | 2002-10-25 | 2005-03-24 | Delphi Technologies, Inc. | Method and apparatus for determining phase current of switched reluctance electric machines |
| WO2011004546A1 (en) * | 2009-07-10 | 2011-01-13 | Three Eye Co., Ltd. | Reluctance motor apparatus |
| CN103475292A (en) * | 2013-08-13 | 2013-12-25 | 燕山大学 | Switch magnetic resistance generator system capable of realizing rapid excitation/demagnetization |
| CN105322838A (en) * | 2014-07-01 | 2016-02-10 | 南京工业大学 | Three-level motor power converter for realizing rapid demagnetization |
| CN204361951U (en) * | 2014-12-30 | 2015-05-27 | 中国计量学院 | Switchette magnetic resistance wind-driven generator half self-excitation up-down voltage power converter topology |
| CN204408235U (en) * | 2014-12-30 | 2015-06-17 | 中国计量学院 | Switchette magnetic resistance wind-driven generator half self-excitation boost power converter topology |
| CN104638991A (en) * | 2015-01-28 | 2015-05-20 | 江苏大学 | Double-bus power converter for inhibiting torque pulsation of switched reluctance motor and control method thereof |
| CN205883097U (en) * | 2016-06-24 | 2017-01-11 | 姜坚波 | Encourage switched reluctance generator transformer soon and press power converter |
Non-Patent Citations (1)
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| 李定宣: "《开关稳定电源设计与应用》", 31 August 2006 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098769A (en) * | 2018-01-31 | 2019-08-06 | 英飞凌科技股份有限公司 | The discharge technology of magnet exciting coil |
| CN110677083A (en) * | 2019-10-17 | 2020-01-10 | 中国计量大学 | Direct-boost excitation switched reluctance generator current conversion system |
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| CN107196575B (en) | 2020-06-26 |
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Effective date of registration: 20231204 Address after: Room 407-10, floor 4, building 2, Haichuang science and technology center, Cangqian street, Yuhang District, Hangzhou City, Zhejiang Province, 311100 Patentee after: Zhejiang Zhiduo Network Technology Co.,Ltd. Address before: 310018, No. 258, source street, Xiasha Higher Education Park, Hangzhou, Zhejiang Patentee before: China Jiliang University |