CN109120187A - A kind of energy-saving electrical magnetic detents controller - Google Patents
A kind of energy-saving electrical magnetic detents controller Download PDFInfo
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- CN109120187A CN109120187A CN201810568044.2A CN201810568044A CN109120187A CN 109120187 A CN109120187 A CN 109120187A CN 201810568044 A CN201810568044 A CN 201810568044A CN 109120187 A CN109120187 A CN 109120187A
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- 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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
- H02P3/24—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by applying dc to the motor
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- Power Engineering (AREA)
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Abstract
The invention discloses a kind of energy-saving electrical magnetic detents controllers, including AC power source, AC power source exports sine voltage to rectification circuit after passing through filter, rectification circuit is separately connected brake coil and sample circuit, switching device is connected between brake coil and sample circuit, the signal of sample circuit output is sent to delay selection circuit, the signal of sample circuit output simultaneously is sent again after being amplified by amplifying circuit to delay selection circuit, delay selection circuit output signal is to PWM switch modulation and driving circuit, PWM switch modulation and driving circuit output signal to switching device；It further include accessory power supply, for output sine voltage to accessory power supply, accessory power supply is respectively that delay selection circuit, amplifying circuit and PWM switch modulation and driving circuit provide direct current after AC power source passes through filter.Exciting current of the invention can Time-sharing control, can provide constant excitation megnet electric current under mains ripple and coil impedance situation of change.
Description
Technical field
The present invention relates to a kind of energy-saving electrical magnetic detents controllers.
Background technique
Electromagnetic brake is the special equipment of the widely used towing motor electromagnetic braking of industrial and mining enterprises, in Electrified Transmission system
Braking action is played in system, is widely used in the power transmission systems such as metallurgy, building, chemical industry.
Electromagnetic brake has many advantages, such as that structure is simple, controls, is easy for installation.A kind of application as electromagnetic energy conversion
Mode, it is to generate corresponding electromagnetic force after passing through rated exciting current using electromagnetic brake coil according to electromagnetic induction principle,
And then drive a kind of braking equipment of brake block movement.
Electromagnetic brake mainly passes through electromagnet by the brake signal that controller issues in the form of electric current, utilizes change
The electric current of electromagnet is passed through to change the brake force of brake.The course of work of brake controller is divided into two stages: starting
Stage and maintenance stage.In order to ensure electromagnetic brake quick acting, startup stage needs to provide for brake coil biggish
Exciting current and certain time, it is ensured that brake action message；In the maintenance stage, brake coil is by remaining lesser
Exciting current maintains the brake armature to provide the folding condition (the non-brake state of brake) that enough electromagnetic forces maintains brake shoe.
Brake is in folding condition in non-braking state, the exciting current for needing brake coil to keep constant for a long time, so as to
It drives brake armature for brake block to provide enough electromagnetic forces, maintains its stable folding condition, therefore exciting current
Size will determine the operating power consumption of brake.Under actual condition, due to brake power supply electricity caused by grid voltage change
Impedance reduction caused by pressure fluctuation and brake coil generate heat all can cause exciting current unstable, to influence brake electricity
The stabilization of magnetic force, can this will threaten brake block be reliably fitted in folding condition.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of energy-saving electrical magnetic detents controller, exciting current can divide
When control, can provide constant excitation megnet electric current under mains ripple and coil impedance situation of change.
Technical solution: to reach this purpose, the invention adopts the following technical scheme:
Energy-saving electrical magnetic detents controller of the present invention, including AC power source, AC power source pass through filter
For output sine voltage to rectification circuit, rectification circuit is separately connected brake coil and sample circuit afterwards, brake coil and
Switching device is connected between sample circuit, the signal of sample circuit output is sent to delay selection circuit, while sample circuit is defeated
Signal is also sent after being amplified by amplifying circuit to delay selection circuit, delay selection circuit output signal to PWM switch modulation out
With driving circuit, PWM switch modulation and driving circuit output signal to switching device；It further include accessory power supply, AC power source is logical
Sine voltage is also exported after wave filter to accessory power supply, accessory power supply is respectively delay selection circuit, amplifying circuit and PWM
Switch modulation and driving circuit provide direct current.
Further, the switching device includes IGBT pipe T1, PWM switch modulation and driving circuit output signal to IGBT pipe
T1Grid, IGBT pipe T1Collector connecting brake coil, IGBT pipe T1Emitter connect sample circuit.
Further, the sample circuit includes resistance R3, resistance R3One end connection switch device, resistance R3One end with
Capacitor C3One end between be additionally provided with adjustable resistance R4, capacitor C3The other end be separately connected rectification circuit and resistance R3It is another
End.
Further, the delay selection circuit includes voltage comparator U3, voltage comparator U3Non-inverting input terminal connect respectively
Connecting resistance R8One end and capacitor C4One end, voltage comparator U3Inverting input terminal be separately connected resistance R9One end and electricity
Hinder R10One end, resistance R9The other end be separately connected resistance R8The other end, voltage comparator U3Power end, resistance R11's
One end, two channel analog multiplexer U4Power end and accessory power supply, capacitor C4The other end, resistance R10It is another
End, voltage comparator U3Ground terminal be grounded, resistance R11The other end be separately connected voltage comparator U3Output end and two
Channel analog multiplexer U4Control terminal, sample circuit output signal input two channel analog multiplexer U4?
One input terminal, while the signal of sample circuit output is by inputting two channel analog multiplexer U after amplifying circuit amplification4's
Second input terminal, two channel analog multiplexer U4Output end output signal to PWM switch modulation and driving circuit.
Further, the amplifying circuit includes operational amplifier U2, operational amplifier U2Power end connect accessory power supply,
The signal of sample circuit output is sent to operational amplifier U2Non-inverting input terminal, operational amplifier U2Inverting input terminal pass through electricity
Hinder R6Ground connection, operational amplifier U2Inverting input terminal also pass through adjustable resistance R7Connect operational amplifier U2Output end, operation
Amplifier U2Output end connect delay selection circuit.
Further, the PWM switch modulation and driving circuit include current mode PWM controller chip U5, current-mode
PWM controller chip U5Current sense input connect delay selection circuit, current mode PWM controller chip U5Middle error
The output end of amplifier is separately connected resistance R12One end and capacitor C5One end, current mode PWM controller chip U5Base
Quasi- voltage output end is separately connected capacitor C6One end and resistance R13One end, resistance R13The other end be separately connected capacitor C7's
One end and current mode PWM controller chip U5Timing end, resistance R12The other end, capacitor C5The other end, capacitor C6It is another
One end and capacitor C7The other end be grounded, current mode PWM controller chip U5Power end connect accessory power supply, current-mode
Formula PWM controller chip U5Power end be also connected with NPN type triode Q1Collector, NPN type triode Q1Emitter connection
PNP type triode Q2Emitter, PNP type triode Q2Grounded collector, PNP type triode Q2Base stage be separately connected NPN
Type triode Q1Base stage and current mode PWM controller chip U5Output end, NPN type triode Q1Emitter be also connected with
Switching device.
It further, further include resistance R5With diode D6, PWM switch modulation and driving circuit are separately connected resistance R5One
End and diode D6One end, resistance R5The other end and diode D6The other end be separately connected switching device.
The utility model has the advantages that the invention discloses a kind of energy-saving electrical magnetic detents controllers to have compared with prior art
It is following the utility model has the advantages that
1) brake exciting current Time-sharing control, startup stage high current, maintenance stage low current reduce brake coil
Power consumption realizes energy conservation；
2) it can be automatically adjusted to provide constant excitation megnet electric current under mains ripple and coil impedance situation of change；
3) starting current and maintenance electric current are adjustable, are adapted to the brake of different size.
Detailed description of the invention
Fig. 1 is the block diagram of energy-saving electrical magnetic detents controller in the specific embodiment of the invention；
Fig. 2 is the main circuit diagram of energy-saving electrical magnetic detents controller in the specific embodiment of the invention；
Fig. 3 is the circuit diagram of amplifying circuit in the specific embodiment of the invention；
Fig. 4 is the circuit diagram of delay selection circuit in the specific embodiment of the invention；
Fig. 5 is the circuit diagram of PWM switch modulation and driving circuit in the specific embodiment of the invention.
Specific embodiment
Technical solution of the present invention is further introduced with attached drawing With reference to embodiment.
Present embodiment discloses a kind of energy-saving electrical magnetic detents controller, as shown in Figure 1, including alternating current
Source 1, for output sine voltage to rectification circuit 3, rectification circuit 3 is separately connected brake line after AC power source 1 passes through filter 2
Circle 4 and sample circuit 6 are connected with switching device 5, the signal that sample circuit 6 exports between brake coil 4 and sample circuit 6
It send to delay selection circuit 8, while the signal that sample circuit 6 exports after the amplification of amplifying circuit 9 by also sending to delay selection electricity
Road 8, delay selection circuit 8 output signal to PWM switch modulation and driving circuit 10, and PWM switch modulation and driving circuit 10 are defeated
Signal is to switching device 5 out；It further include accessory power supply 7, AC power source 1, which passes through, also exports sine voltage after filter 2 to auxiliary
Power supply 7 is helped, accessory power supply 7 is respectively that delay selection circuit 8, amplifying circuit 9 and PWM switch modulation and driving circuit 10 provide directly
Galvanic electricity.Fig. 2 is main circuit, is limited to page length, and entire circuit can not put in, and therefore, other parts circuit is by Fig. 3-5
To present.
As shown in Fig. 2, rectification circuit 3 includes diode D1, diode D1Anode connect diode D2Cathode, two poles
Pipe D2Anode connect diode D4Anode, diode D4Cathode connect diode D3Anode, diode D3Cathode connect
Meet diode D1Cathode.
As shown in Fig. 2, 4 both ends parallel diode D of brake coil7.Energy-saving electrical magnetic detents controller further includes
Capacitor C1, capacitor C1One end be separately connected diode D3Cathode, resistance R1One end and diode D7Cathode, capacitor C1's
The other end connects capacitor C2One end, resistance R1The other end connect resistance R2One end, resistance R2The other end, capacitor C2It is another
Resistance R in one end and sample circuit 63The other end be grounded.
As shown in Fig. 2, switching device 5 includes IGBT pipe T1, NPN type triode Q in PWM switch modulation and driving circuit 101
Emitter output signal to resistance R5One end, resistance R5The other end connect IGBT pipe T1Grid, and resistance R5Both ends are also
Parallel diode D6, IGBT pipe T1Collector connecting brake coil 4, IGBT pipe T1Emitter connection sample circuit 6 in electricity
Hinder R3One end.
As shown in Fig. 2, sample circuit 6 includes resistance R3, resistance R3One end connection switch device 5 in IGBT pipe T1Hair
Emitter-base bandgap grading, resistance R3One end and capacitor C3One end between be additionally provided with adjustable resistance R4, capacitor C3The other end ground connection, capacitor C3's
The other end is also connected with resistance R3The other end.
As shown in Fig. 2, the first ac input end mouth of accessory power supply 7 connects diode D1Anode, the of accessory power supply 7
Two ac input end mouths connect diode D4Cathode, the direct current output port of accessory power supply 7 is separately connected delay selection circuit 8
Middle resistance R9The other end, operational amplifier U in amplifying circuit 92Power end and PWM switch modulation and driving circuit 10 in electricity
Stream mode PWM controller chip U5Power end.
As shown in figure 4, delay selection circuit 8 includes voltage comparator U3, voltage comparator U3Non-inverting input terminal connect respectively
Connecting resistance R8One end and capacitor C4One end, voltage comparator U3Inverting input terminal be separately connected resistance R9One end and electricity
Hinder R10One end, resistance R9The other end be separately connected resistance R8The other end, voltage comparator U3Power end, resistance R11's
One end, two channel analog multiplexer U4Power end and accessory power supply 7, capacitor C4The other end, resistance R10It is another
End, voltage comparator U3Ground terminal be grounded, resistance R11The other end be separately connected voltage comparator U3Output end and two
Channel analog multiplexer U4Control terminal, capacitor C in sample circuit 63One end output signal input two channel analogies it is more
Path multiplexer U4First input end, while capacitor C in sample circuit 63The signal of one end output amplified by amplifying circuit 9
After input two channel analog multiplexer U4The second input terminal, two channel analog multiplexer U4Output end export letter
Number to current mode PWM controller chip U in PWM switch modulation and driving circuit 105Current sense input.
As shown in figure 3, amplifying circuit 9 includes operational amplifier U2, operational amplifier U2Power end connect accessory power supply 7
Direct current output port, sample circuit 6 export signal send to operational amplifier U2Non-inverting input terminal, operational amplifier U2's
Inverting input terminal passes through resistance R6Ground connection, operational amplifier U2Inverting input terminal also pass through adjustable resistance R7Connect operation amplifier
Device U2Output end, operational amplifier U2Output end connection delay selection circuit 8 in two channel analog multiplexer U4?
Two input terminals.
As shown in figure 5, PWM switch modulation and driving circuit 10 include current mode PWM controller chip U5, current-mode
PWM controller chip U5Current sense input connection delay selection circuit 8 in two channel analog multiplexer U4Output
End, current mode PWM controller chip U5The output end of middle error amplifier is separately connected resistance R12One end and capacitor C5's
One end, current mode PWM controller chip U5Reference voltage output end be separately connected capacitor C6One end and resistance R13One
End, resistance R13The other end be separately connected capacitor C7One end and current mode PWM controller chip U5Timing end, resistance R12
The other end, capacitor C5The other end, capacitor C6The other end and capacitor C7The other end be grounded, current mode PWM controller
Chip U5Power end connection accessory power supply 7 DC output end, current mode PWM controller chip U5Power end be also connected with
NPN type triode Q1Collector, NPN type triode Q1Emitter connect PNP type triode Q2Emitter, three pole of positive-negative-positive
Pipe Q2Grounded collector, PNP type triode Q2Base stage be separately connected NPN type triode Q1Base stage and current mode PWM control
Device chip U processed5Output end, NPN type triode Q1Emitter be also connected with resistance R5One end.
How lower surface analysis controller of the invention controls the starting of electro-magnetic braking device and maintains state and brake
The stabilization of 4 electric current of coil.
Circuit works normally after control device power supply, current mode PWM controller chip U5The output of internal error amplifier
COMP is held to stablize in a fixed value, through current mode PWM controller chip U5Internal two diodes decompression and resistance point
After pressure, current mode PWM controller chip U is provided5The reference voltage of builtin voltage comparator, when cycle of oscillation starts, one
A switch periods also start simultaneously at, current mode PWM controller chip U5Current sense input signal I be sent to internal and base
Quasi- voltage is compared, and the error signal of generation is sent to current mode PWM controller chip U5Internal pulse-width modulation circuit, it is complete
At the modulation of output pulse width.When starting state, current sampling signal IsenseSmaller, pulse-width modulation circuit can make to export arteries and veins
Wider width is rushed, then IGBT pipe T in switching device 51Turn-on time it is longer, the electric current of brake coil 4 is flowed through in main circuit
Virtual value is larger；When maintenance state, amplified current sampling signal EIsenseBigger, pulse-width modulation circuit can make to export arteries and veins
It rushes width to narrow, then IGBT pipe T in switching device 51Turn-on time shorten, the electric current of brake coil 4 is flowed through in main circuit
Virtual value reduces.In addition, the electric current of starting state lower brake coil 4 can be by changing resistance R in Fig. 24Size adjust,
The electric current of maintenance state lower brake coil 4 then can be by changing resistance R in Fig. 37Size adjust.
If AC supply voltage is increased or due to network voltage since coil long-time heating power causes impedance to reduce
And the electric current of brake coil 4 is caused to rise, then current mode PWM controller chip U5The electric current of current sense input adopt
Sample value becomes larger, and pulse-width modulation circuit can make the width for exporting pulse narrow, then IGBT pipe T in switching device 51Turn-on time become
It is short, so that the current effective value of brake coil 4 is lower, to keep the constant of the electric current of brake coil 4, vice versa.
Claims (7)
1. a kind of energy-saving electrical magnetic detents controller, it is characterised in that: including AC power source (1), AC power source (1) passes through
Filter (2) exports sine voltage to rectification circuit (3) afterwards, and rectification circuit (3) is separately connected brake coil (4) and sampling
Circuit (6) is connected with switching device (5) between brake coil (4) and sample circuit (6), the signal of sample circuit (6) output
It send to delay selection circuit (8), while sample circuit (6) output signal is selected by also sending after amplifying circuit (9) amplification to delay
It selects circuit (8), delay selection circuit (8) outputs signal to PWM switch modulation and driving circuit (10), PWM switch modulation and drive
Dynamic circuit (10) output signal to switching device (5)；It further include accessory power supply (7), after AC power source (1) passes through filter (2)
Also output sine voltage to accessory power supply (7), accessory power supply (7) be respectively delay selection circuit (8), amplifying circuit (9) and
PWM switch modulation and driving circuit (10) provide direct current.
2. energy-saving electrical magnetic detents controller according to claim 1, it is characterised in that: the switching device (5)
Including IGBT pipe T1, PWM switch modulation and driving circuit (10) output signal to IGBT pipe T1Grid, IGBT pipe T1Current collection
Pole connecting brake coil (4), IGBT pipe T1Emitter connect sample circuit (6).
3. energy-saving electrical magnetic detents controller according to claim 1, it is characterised in that: the sample circuit (6)
Including resistance R3, resistance R3One end connection switch device (5), resistance R3One end and capacitor C3One end between be additionally provided with can
Adjust resistance R4, capacitor C3The other end be separately connected rectification circuit (3) and resistance R3The other end.
4. energy-saving electrical magnetic detents controller according to claim 1, it is characterised in that: the delay selection circuit
It (8) include voltage comparator U3, voltage comparator U3Non-inverting input terminal be separately connected resistance R8One end and capacitor C4One
End, voltage comparator U3Inverting input terminal be separately connected resistance R9One end and resistance R10One end, resistance R9The other end point
It Lian Jie not resistance R8The other end, voltage comparator U3Power end, resistance R11One end, two channel analog multiplexer U4
Power end and accessory power supply (7), capacitor C4The other end, resistance R10The other end, voltage comparator U3Ground terminal it is equal
Ground connection, resistance R11The other end be separately connected voltage comparator U3Output end and two channel analog multiplexer U4Control
The signal at end, sample circuit (6) output inputs two channel analog multiplexer U4First input end, while sample circuit
(6) signal exported inputs two channel analog multiplexer U after amplifying by amplifying circuit (9)4The second input terminal, two is logical
Road analog multiplexer U4Output end output signal to PWM switch modulation and driving circuit (10).
5. energy-saving electrical magnetic detents controller according to claim 1, it is characterised in that: the amplifying circuit (9)
Including operational amplifier U2, operational amplifier U2Power end connect accessory power supply (7), sample circuit (6) output signal send to
Operational amplifier U2Non-inverting input terminal, operational amplifier U2Inverting input terminal pass through resistance R6Ground connection, operational amplifier U2's
Inverting input terminal also passes through adjustable resistance R7Connect operational amplifier U2Output end, operational amplifier U2Output end connection prolong
When selection circuit (8).
6. energy-saving electrical magnetic detents controller according to claim 1, it is characterised in that: the PWM switch modulation
It include current mode PWM controller chip U with driving circuit (10)5, current mode PWM controller chip U5Current detecting it is defeated
Enter end connection delay selection circuit (8), current mode PWM controller chip U5The output end of middle error amplifier is separately connected electricity
Hinder R12One end and capacitor C5One end, current mode PWM controller chip U5Reference voltage output end be separately connected capacitor C6
One end and resistance R13One end, resistance R13The other end be separately connected capacitor C7One end and current mode PWM controller core
Piece U5Timing end, resistance R12The other end, capacitor C5The other end, capacitor C6The other end and capacitor C7The other end connect
Ground, current mode PWM controller chip U5Power end connect accessory power supply (7), current mode PWM controller chip U5Electricity
Source is also connected with NPN type triode Q1Collector, NPN type triode Q1Emitter connect PNP type triode Q2Transmitting
Pole, PNP type triode Q2Grounded collector, PNP type triode Q2Base stage be separately connected NPN type triode Q1Base stage and
Current mode PWM controller chip U5Output end, NPN type triode Q1Emitter be also connected with switching device (5).
7. energy-saving electrical magnetic detents controller according to claim 1, it is characterised in that: further include resistance R5With two
Pole pipe D6, PWM switch modulation and driving circuit (10) are separately connected resistance R5One end and diode D6One end, resistance R5's
The other end and diode D6The other end be separately connected switching device (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810568044.2A CN109120187B (en) | 2018-06-05 | 2018-06-05 | Controller of electromagnetic braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810568044.2A CN109120187B (en) | 2018-06-05 | 2018-06-05 | Controller of electromagnetic braking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109120187A true CN109120187A (en) | 2019-01-01 |
| CN109120187B CN109120187B (en) | 2021-04-27 |
Family
ID=64822708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810568044.2A Active CN109120187B (en) | 2018-06-05 | 2018-06-05 | Controller of electromagnetic braking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109120187B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592597A (en) * | 2019-01-11 | 2019-04-09 | 李国利 | A kind of crane electromagnetic brake DC chopped-wave control device |
| CN110071664A (en) * | 2019-04-17 | 2019-07-30 | 辽宁石油化工大学 | With the controllable direct current generator brake apparatus of constant current and falling speed and method |
| CN113431947A (en) * | 2021-06-10 | 2021-09-24 | 西北机电工程研究所 | Energy-saving drive circuit of electromagnetic directional valve based on MOSFET |
| US20220299081A1 (en) * | 2020-03-06 | 2022-09-22 | Altra Industrial Motion (Shenzhen) Co.,Ltd. | Electromagnetic Brake Control Apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109592597A (en) * | 2019-01-11 | 2019-04-09 | 李国利 | A kind of crane electromagnetic brake DC chopped-wave control device |
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| CN110071664B (en) * | 2019-04-17 | 2020-09-22 | 辽宁石油化工大学 | Braking device and method for direct current motor with constant current and controllable falling speed |
| US20220299081A1 (en) * | 2020-03-06 | 2022-09-22 | Altra Industrial Motion (Shenzhen) Co.,Ltd. | Electromagnetic Brake Control Apparatus |
| CN113431947A (en) * | 2021-06-10 | 2021-09-24 | 西北机电工程研究所 | Energy-saving drive circuit of electromagnetic directional valve based on MOSFET |
| CN113431947B (en) * | 2021-06-10 | 2023-08-04 | 西北机电工程研究所 | MOSFET-based energy-saving drive circuit for electromagnetic reversing valve |
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|---|---|
| CN109120187B (en) | 2021-04-27 |
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