CN106744224A - A kind of two frequency converters of control for escalator - Google Patents
A kind of two frequency converters of control for escalator Download PDFInfo
- Publication number
- CN106744224A CN106744224A CN201611247504.9A CN201611247504A CN106744224A CN 106744224 A CN106744224 A CN 106744224A CN 201611247504 A CN201611247504 A CN 201611247504A CN 106744224 A CN106744224 A CN 106744224A
- Authority
- CN
- China
- Prior art keywords
- inverter
- rectifier
- escalator
- staircase
- electrical connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B23/00—Component parts of escalators or moving walkways
- B66B23/02—Driving gear
-
- 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
Abstract
The present invention relates to converter technology field, specifically a kind of two frequency converters of control for escalator.Including rectifier, up staircase inverter, down escalator inverter, capacitor, master control borad, High-speed DC blower fan, direct current overrun switch, the rated current of the rectifier is equal to the rated current sum of up staircase inverter and down escalator inverter, the positive pole of the rectifier is electrically connected with the positive pole of up staircase inverter, the negative pole of the rectifier is electrically connected with the negative pole of up staircase inverter, the positive pole of the rectifier is electrically connected with the positive pole of down escalator inverter, the negative pole of the rectifier is electrically connected with the negative pole of down escalator inverter, the positive pole of the rectifier is electrically connected with the positive pole of capacitor, the negative pole of the rectifier is electrically connected with the negative pole of capacitor, the present invention has significant energy saving effect, and hardware cost can be greatly lowered.
Description
Technical field
The present invention relates to converter technology field, specifically a kind of two frequency converters of control for escalator.
Background technology
Market or the escalator of supermarket, major part are staged staircase, by the up staircase of model identical and descending are helped
Each one group of ladder is configured to a set of, and two groups are respectively arranged with independent frequency converter and independent motor.
When escalator is up, now motor drag load running, motor torque is just, to be in motor-operated running state,
Consumption electric energy.When escalator is descending, now motor is to be supported drive operation, and motor torque is negative, is in electrodynamic braking
State, i.e. generating state.Now, the electric energy that motor sends causes the DC bus-bar voltage of frequency converter to raise, because frequency converter is whole
After stream input is irreversible, and DC bus-bar voltage is raised, failure can be caused to circuit, so only by this electric energy by braking
Resistance is converted into heat and discharges, therefore, cause computer room temperature further to raise, while causing energy dissipation.
In addition, speed governing device of the frequency converter as motor, indispensable, but its is costly, causes user to buy automatic
Staircase it is relatively costly.
The content of the invention
The technical problems to be solved by the invention are：Energy dissipation in escalator frequency conversion system of the prior art
Excessively, frequency converter is relatively costly, so as to propose a kind of two frequency converters of control for escalator.
In order to solve the above technical problems, the technical scheme is that：
It is a kind of for escalator one control two frequency converters, including rectifier, up staircase inverter, down escalator inverter,
Capacitor, master control borad, High-speed DC blower fan, direct current overrun switch, the rated current of the rectifier are equal to up staircase inversion
The rated current sum of device and down escalator inverter, the positive pole of the rectifier is electrically connected with the positive pole of up staircase inverter
Connect, the negative pole of the rectifier is electrically connected with the negative pole of up staircase inverter, the positive pole of the rectifier is inverse with down escalator
Become the positive pole electrical connection of device, the negative pole of the rectifier is electrically connected with the negative pole of down escalator inverter, and the rectifier is just
Pole is electrically connected with the positive pole of capacitor, and the negative pole of the rectifier is electrically connected with the negative pole of capacitor, the master control borad with it is up
Staircase inverter is electrically connected, and the master control borad electrically connects with down escalator inverter, one end of the direct current overrun switch with it is whole
The positive pole electrical connection of device is flowed, the other end of the direct current overrun switch is electrically connected with one end of High-speed DC blower fan, the high speed
The other end of DC fan is electrically connected with the negative pole of rectifier.
The up staircase inverter is electrically connected with the motor of up staircase.
The down escalator inverter is electrically connected with the motor of down escalator.
The DC voltage of the direct current overrun switch real-time detection frequency converter, when the DC voltage of frequency converter is more than 795 volts
When special, the direct current overrun switch closure.
The High-speed DC blower fan rated speed is not less than 2950 turns per minute, and power is not less than 500 watts.
Using above-mentioned technical proposal, the present invention at least includes following beneficial effect：
A kind of two frequency converters of control for escalator of the present invention, when simultaneously up staircase and down escalator run
When, down escalator motor torque is negative, is in on-position, i.e. generating state, and the electric energy that motor sends is by up staircase motor
Consume, it is not necessary to consumed by braking resistor, so as to serve the purpose of energy saving, in addition, two frequency converters of control can be same
When control two motors, compared with traditional two independent Frequency Converter Controls, two motors, hardware cost has larger decline：Can
One piece of master control borad, rectifier configurations are saved to decline, save 2 sets of braking resistors and brake unit etc..
Brief description of the drawings
Fig. 1 is a kind of circuit diagram of two frequency converters of control for escalator of the present invention；
Wherein：1. rectifier, 2. up staircase inverter, 3. down escalator inverter, 4. capacitor, 5. master control borad,
6. High-speed DC blower fan, 7. direct current overrun switch.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As shown in figure 1, it is a kind of for escalator one control two frequency converters, including rectifier 1, up staircase inverter 2,
Down escalator inverter 3, capacitor 4, master control borad 5, High-speed DC blower fan 6, direct current overrun switch 7, the rectifier 1 it is specified
Electric current is equal to the rated current sum of up staircase inverter 2 and down escalator inverter 3, the positive pole of the rectifier 1 with it is upper
The positive pole electrical connection of row staircase inverter 2, the negative pole of the rectifier 1 is electrically connected with the negative pole of up staircase inverter 2, described
The positive pole of rectifier 1 is electrically connected with the positive pole of down escalator inverter 3, negative pole and the down escalator inverter 3 of the rectifier 1
Negative pole electrical connection, the positive pole of the rectifier 1 electrically connects with the positive pole of capacitor 4, the negative pole and capacitor of the rectifier 1
4 negative pole electrical connection, the master control borad 5 electrically connects with up staircase inverter 2, the master control borad 5 and down escalator inverter 3
Electrical connection, one end of the direct current overrun switch 7 electrically connects with the positive pole of rectifier 1, the other end of the direct current overrun switch 7
One end with High-speed DC blower fan 6 is electrically connected, and the other end of the High-speed DC blower fan 6 is electrically connected with the negative pole of rectifier 1.
The up staircase inverter 2 is electrically connected with the motor of up staircase.
The down escalator inverter 3 is electrically connected with the motor of down escalator.
The DC voltage of the real-time detection frequency converter of the direct current overrun switch 7, when the DC voltage of frequency converter is more than 795 volts
When special, the direct current overrun switch 7 is closed, and the rated speed of High-speed DC blower fan 6 is not less than 2950 turns per minute, and power is not
Less than 500 watts, fan-type to be loaded with larger starting current, generally 7 times or so, when down escalator operation, up staircase stops
When only using, system is in regenerative power generation state, and when DC voltage rises to 795 volts, frequency converter is transfinited by the direct current
Switch 7 checks DC voltage, High-speed DC blower fan 6 is started, because the rated speed of High-speed DC blower fan 6 is not less than per minute 2950
Turn, with starting power it is big the characteristics of, busbar voltage can be rapidly decreased in the range of safe voltage, it is ensured that frequency converter makes safely
With the power of High-speed DC blower fan 6 is not less than 500 watts can ensure have the sufficiently fast time to reduce DC voltage.
After system AC power accesses rectifier 1, rectifier 1 produces DC voltage, capacitor 4 to be respectively connected to DC voltage
Positive and negative two ends, play a part of energy storage and filtering, and up staircase inverter 2 is also respectively connected to the positive and negative two ends of DC voltage, for upper
Row staircase motor provides AC power, the action required for completing up staircase；Down escalator inverter 3 is also respectively connected to direct current
The positive and negative two ends of voltage, for down escalator motor provides AC power, the action required for completing down escalator.
When up staircase and down escalator run simultaneously, down escalator motor torque is negative, is in on-position, that is, send out
Electricity condition, the electric energy that motor sends causes frequency converter DC voltage to rise, meanwhile, up staircase motor torque is just, in use
Electricity condition, therefore frequency converter DC voltage, again with decline, now, rectifier 1 is reduced or stopped from system AC power automatically
In absorb energy, frequency converter also without connect braking resistor, so as to serve the purpose of energy saving.
When the operation of up staircase, when down escalator is stopped using, the actually used electric current of rectifier 1 is to be equal to up staircase
The running current of inverter 2, the running current of down escalator inverter 3 is 0, and the running current of up staircase inverter 2 is little
In its rated current, therefore, the actually used electric current of rectifier 1 is not over up staircase inverter 2 and down escalator inversion
0.5 times of the rated current sum of device 3, therefore, the rated current of rectifier 1 is equal to up staircase inverter 2 and down escalator
The rated current sum of inverter 3 is safe, and the rated current of rectifier 1 multiplied by with safety coefficient without being amplified.
When down escalator operation, when up staircase is stopped using, the actually used electric current of rectifier 1 is to be equal to down escalator
The running current of inverter 3, the running current of up staircase inverter 2 is 0, and the running current of down escalator inverter 3 is little
In its rated current, therefore, the actually used electric current of rectifier 1 is not over up staircase inverter 2 and down escalator inversion
The rated current sum of device 3, therefore, the rated current of rectifier 1 is equal to up staircase inverter 2 and down escalator inverter 3
Rated current sum be safe, the rated current of rectifier 1 multiplied by with safety coefficient without be amplified.
When down escalator is used with up staircase simultaneously, the actually used electric current of rectifier 1 is inverse equal to up staircase
Become the vector of device 2 and the running current of down escalator inverter 3, the running current of down escalator inverter 3 and up staircase
The running current of inverter 2 is in opposite direction, and can cancel out each other a part, therefore, the actually used electric current of rectifier 1 not over
The rated current sum of up staircase inverter 2 and down escalator inverter 3, therefore, the rated current of rectifier 1 is equal to up
The rated current sum of staircase inverter 2 and down escalator inverter 3 be it is safe, the rated current of rectifier 1 without multiplied by
It is amplified with safety coefficient.
Traditional frequency converter rectifier rated current is multiplied by security system and is amplified by the rated current of inverter, this
The frequency converter rectifier of invention need not be multiplied by safety coefficient, and in the case where total rated current is consistent, a high current is whole
The price for flowing device is more cheap than two low current rectifiers, therefore the present invention can effectively reduce frequency converter cost.
Claims (5)
1. it is a kind of for escalator one control two frequency converters, it is characterised in that：Including rectifier（1）, up staircase inverter
（2）, down escalator inverter（3）, capacitor（4）, master control borad（5）, High-speed DC blower fan（6）, direct current overrun switch（7）, institute
State rectifier（1）Rated current be equal to up staircase inverter（2）With down escalator inverter（3）Rated current sum,
The rectifier（1）Positive pole and up staircase inverter（2）Positive pole electrical connection, the rectifier（1）Negative pole with it is up
Staircase inverter（2）Negative pole electrical connection, the rectifier（1）Positive pole and down escalator inverter（3）Positive pole electrical connection,
The rectifier（1）Negative pole and down escalator inverter（3）Negative pole electrical connection, the rectifier（1）Positive pole and electric capacity
Device（4）Positive pole electrical connection, the rectifier（1）Negative pole and capacitor（4）Negative pole electrical connection, the master control borad（5）With
Up staircase inverter（2）Electrical connection, the master control borad（5）With down escalator inverter（3）Electrical connection, the direct current transfinites out
Close（7）One end and rectifier（1）Positive pole electrical connection, the direct current overrun switch（7）The other end and High-speed DC blower fan
（6）One end electrical connection, the High-speed DC blower fan（6）The other end and rectifier（1）Negative pole electrical connection.
2. it is according to claim 1 it is a kind of for escalator one control two frequency converters, it is characterised in that：It is described up to help
Terraced inverter（2）Motor with up staircase is electrically connected.
3. it is according to claim 1 it is a kind of for escalator one control two frequency converters, it is characterised in that：It is described descending to help
Terraced inverter（3）Electrically connected with the motor of down escalator.
4. it is according to claim 1 it is a kind of for escalator one control two frequency converters, it is characterised in that：The direct current surpasses
Limit switch（7）The DC voltage of real-time detection frequency converter, when the DC voltage of frequency converter is more than 795 volts, the direct current surpasses
Limit switch（7）Closure.
5. it is according to claim 1 it is a kind of for escalator one control two frequency converters, it is characterised in that：The high speed is straight
Flow fan（6）Rated speed is not less than 2950 turns per minute, and power is not less than 500 watts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611247504.9A CN106744224A (en) | 2016-12-29 | 2016-12-29 | A kind of two frequency converters of control for escalator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611247504.9A CN106744224A (en) | 2016-12-29 | 2016-12-29 | A kind of two frequency converters of control for escalator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106744224A true CN106744224A (en) | 2017-05-31 |
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ID=58929203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611247504.9A Pending CN106744224A (en) | 2016-12-29 | 2016-12-29 | A kind of two frequency converters of control for escalator |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003529511A (en) * | 2000-03-31 | 2003-10-07 | インベンテイオ・アクテイエンゲゼルシヤフト | Apparatus and method for reducing the power connection rating of an elevator installation |
| CN1984831A (en) * | 2004-07-12 | 2007-06-20 | 通力股份公司 | Power source as an energy saver and emergency power source in an elevator system |
| CN201190055Y (en) * | 2008-01-23 | 2009-02-04 | 苏州默纳克控制技术有限公司 | Elevator group controller |
| KR20100085417A (en) * | 2009-01-20 | 2010-07-29 | 서일대학산학협력단 | Escalator system and power linkage typed link apparatus thereof |
| CN201961911U (en) * | 2011-01-26 | 2011-09-07 | 陆国杰 | Intelligent electricity-saving device for elevator |
-
2016
- 2016-12-29 CN CN201611247504.9A patent/CN106744224A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003529511A (en) * | 2000-03-31 | 2003-10-07 | インベンテイオ・アクテイエンゲゼルシヤフト | Apparatus and method for reducing the power connection rating of an elevator installation |
| CN1984831A (en) * | 2004-07-12 | 2007-06-20 | 通力股份公司 | Power source as an energy saver and emergency power source in an elevator system |
| CN201190055Y (en) * | 2008-01-23 | 2009-02-04 | 苏州默纳克控制技术有限公司 | Elevator group controller |
| KR20100085417A (en) * | 2009-01-20 | 2010-07-29 | 서일대학산학협력단 | Escalator system and power linkage typed link apparatus thereof |
| CN201961911U (en) * | 2011-01-26 | 2011-09-07 | 陆国杰 | Intelligent electricity-saving device for elevator |
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Application publication date: 20170531 |
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