CN103095189A - Superspeed elevator star-sealing protection processing method - Google Patents
Superspeed elevator star-sealing protection processing method Download PDFInfo
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- CN103095189A CN103095189A CN2011103320578A CN201110332057A CN103095189A CN 103095189 A CN103095189 A CN 103095189A CN 2011103320578 A CN2011103320578 A CN 2011103320578A CN 201110332057 A CN201110332057 A CN 201110332057A CN 103095189 A CN103095189 A CN 103095189A
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Abstract
Provided is a superspeed elevator star-sealing protection processing method. A 0.5-ohm resistor is laterally connected on a star-sealing circuit normal close contactor in series. Through utilization of the processing method, speeds on vehicle sliding or power-cut emergency rescue aspects can be effectively controlled, and the speeds are far lower than a nominal speed of a buffer which reduces stroke.
Description
Technical field
The technology of the present invention relates to the elevator technology field, is exactly that gearless machine is used in the situation of super high speed elevator specifically, adopt envelope star loop protection make elevator slip car or when having a power failure rescue elevator speed be effectively controlled.
Background technology
Permanent-magnet synchnorous gearless dragging machine is by connecting with wire the three-phase winding leading-out wire by star (perhaps delta connection is applicable equally), the three-phase current that permagnetic synchronous motor is externally exported is through resistance, contactor short circuit, set up an opposing magnetic field in stator winding, and the magnetic field moment of resistance increases with electric current, in this case, permagnetic synchronous motor is with the increase of electric current, and speed is placed restrictions on.To this, begin to use from gearless machine, " envelope star " is exactly to be used as safety protection function to use always, but along with the increase of power, the raising of speed has not had normally closed contactor can be directly used in the envelope star.To this, thus proposition will seal the mode of star contactor side series resistor and reduce to seal the star electric current, prevent the contactor adhesion.The envelope star method that apparatus for controlling elevator is commonly used at present has following two kinds:
The method of figure one realizes sealing star with the auxiliary contact of main contactor KM1, is characterized in that cost is low, controls simple.Risk has two, and the one, KM1 is when disconnecting, and main contacts and auxiliary contact move simultaneously, and the slightly leading main contacts of the disconnection action of auxiliary contact just might cause the frequency converter short circuit; The 2nd, the electric current of the auxiliary contact off-capacity of contactor when slipping car by short circuit.
Figure two seals star with envelope star contactor KM2, and main contactor KM1 is Special contactor, and after its dead electricity, main contacts disconnects immediately, and its auxiliary contact deferred action disconnects KM2, realizes the function of envelope star.The front control mode of planting of this kind mode is compared, and it can avoid sealing the phenomenon that star contactor disconnects the leading KM1 main contactor of action, thereby can prevent the frequency converter short circuit.
But problem is above-mentioned two schemes, realize sealing star when protection, all needs normally closed point control, and during its envelope star action of the elevator that generally power is larger, speed is higher, the electric current that flows through its normally closed point is also larger.Facts have proved: the traction machine of a 6.7kw, ladder speed is during for 1m/s, if inspection speed is 0.3m/s, the electric current of instantaneous short circuit winding can reach 50A during 0.3m/s speed.If the traction machine of a 17kw, ladder speed are 2.5m/s, envelope star situation has appearred under normal speed, and short circuit current can reach the 500A left and right.If speed is the elevator of 7m/s, when envelope star situation occurring under normal speed, electric current will be larger.At present on the market without the normally closed point-contactor of this large electric current, if will realize that to this Feng Xingke adopts the mode of series resistor to realize.
Summary of the invention
Thereby technical problem to be solved by this invention is to provide a kind of mode that will seal star contactor side series resistor reduces to seal the star electric current, prevents the elevator envelope star protection processing method of contactor adhesion.
The present invention is achieved through the following technical solutions goal of the invention:
A kind of super high speed elevator envelope star protection processing method is at 0.5 Ω resistance of envelope star loop normally closed contactor side serial connection.
Beneficial effect:
Adopt envelope star protection processing method of the present invention, slip car or power failure emergency management and rescue aspects speed also to have obtained effective control, its speed is also far below the buffer normal speed that subtracts after stroke.
Description of drawings:
Fig. 1 is the schematic diagram of prior art.
Fig. 2 is the schematic diagram of another prior art.
Fig. 3 is structural representation of the present invention.
Embodiment
The elevator larger because of power, that speed is higher, the electric current that flows through when the envelope star is also larger, at present on the market without the normally closed point-contactor of this large electric current, if will realize that to this Feng Xingke adopts the mode of series resistor to realize.
Generally the winding resistance of motor is about 0.035 Ω, if the resistance about envelope star loop normally closed contactor side serial connection one 0.5 Ω, the winding resistance that is equivalent to motor becomes 0.535 Ω.Evidence: payload ratings be 1600KG, speed be the elevator of 7m/s at the resistance of envelope star contactor side serial connection one 0.5 Ω, adopting rated current is that the special use envelope star contactor of 80A can realize sealing star, can prevent the contactor adhesion.For preventing that resistance from burning out through excessive electric current, power can be selected 2KW.After processing through such scheme, slip car or power failure emergency management and rescue aspects speed also to have obtained effective control, its speed is also far below the buffer normal speed that subtracts after stroke.
Claims (1)
1. a super high speed elevator envelope star protection processing method, is characterized in that: at 0.5 Ω resistance of envelope star loop normally closed contactor side serial connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103320578A CN103095189A (en) | 2011-10-28 | 2011-10-28 | Superspeed elevator star-sealing protection processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103320578A CN103095189A (en) | 2011-10-28 | 2011-10-28 | Superspeed elevator star-sealing protection processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103095189A true CN103095189A (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103320578A Withdrawn CN103095189A (en) | 2011-10-28 | 2011-10-28 | Superspeed elevator star-sealing protection processing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN103095189A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322836A (en) * | 2014-07-04 | 2016-02-10 | 海德堡印刷机械股份公司 | Braking circuit in alternating current loop |
| TWI657654B (en) * | 2018-02-14 | 2019-04-21 | 大業開發工業股份有限公司 | Elevator permanent magnet synchronous motor anti-storm protection device |
| CN110835041A (en) * | 2019-11-07 | 2020-02-25 | 迅达（中国）电梯有限公司 | Star-sealing circuit design method for elevator permanent magnet synchronous traction machine |
| CN111056392A (en) * | 2019-12-16 | 2020-04-24 | 迅达（中国）电梯有限公司 | Testing device and testing method for elevator permanent magnet synchronous traction machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000143115A (en) * | 1998-11-06 | 2000-05-23 | Hitachi Ltd | Rescue operation device for elevator at the time of failure |
| JP2000309475A (en) * | 2000-01-01 | 2000-11-07 | Mitsubishi Electric Corp | Elevator device |
| CN1553878A (en) * | 2002-07-10 | 2004-12-08 | 三菱电机株式会社 | Elevator controller |
-
2011
- 2011-10-28 CN CN2011103320578A patent/CN103095189A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000143115A (en) * | 1998-11-06 | 2000-05-23 | Hitachi Ltd | Rescue operation device for elevator at the time of failure |
| JP2000309475A (en) * | 2000-01-01 | 2000-11-07 | Mitsubishi Electric Corp | Elevator device |
| CN1553878A (en) * | 2002-07-10 | 2004-12-08 | 三菱电机株式会社 | Elevator controller |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322836A (en) * | 2014-07-04 | 2016-02-10 | 海德堡印刷机械股份公司 | Braking circuit in alternating current loop |
| TWI657654B (en) * | 2018-02-14 | 2019-04-21 | 大業開發工業股份有限公司 | Elevator permanent magnet synchronous motor anti-storm protection device |
| CN110835041A (en) * | 2019-11-07 | 2020-02-25 | 迅达（中国）电梯有限公司 | Star-sealing circuit design method for elevator permanent magnet synchronous traction machine |
| CN110835041B (en) * | 2019-11-07 | 2021-04-23 | 迅达（中国）电梯有限公司 | Star-sealing circuit design method for elevator permanent magnet synchronous traction machine |
| WO2021088229A1 (en) * | 2019-11-07 | 2021-05-14 | 迅达（中国）电梯有限公司 | Star-connection circuit design method for elevator permanent magnet synchronous traction motor |
| CN111056392A (en) * | 2019-12-16 | 2020-04-24 | 迅达（中国）电梯有限公司 | Testing device and testing method for elevator permanent magnet synchronous traction machine |
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| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20130508 |