CN1047359C - Power semiconductor protection apparatus for elevator and protection method thereof - Google Patents
Power semiconductor protection apparatus for elevator and protection method thereof Download PDFInfo
- Publication number
- CN1047359C CN1047359C CN95116922A CN95116922A CN1047359C CN 1047359 C CN1047359 C CN 1047359C CN 95116922 A CN95116922 A CN 95116922A CN 95116922 A CN95116922 A CN 95116922A CN 1047359 C CN1047359 C CN 1047359C
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- China
- Prior art keywords
- temperature
- elevator
- radiator
- controller
- power semiconductor
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- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
- B66B3/002—Indicators
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- Elevator Control (AREA)
Abstract
A protection device and a protection method for a power semiconductor of a lifter comprises a multi-degree temperature detector that makes use of a multi-degree method to detect the temperature of the radiator; a temperature controller that judges whether the measured temperature hits a corresponding temperature value or not and sets the stage cooling time for the radiator; an operation controller; a display unit for the operating status of the lifter; a drive unit; an error treatment unit; and an error display unit. The method makes use of the multi-degree method to detect the temperature of the radiator, and a certain period of cooling time is provided when the detected temperature arrives at a corresponding temperature degree. When the lifter operates in a long period of time, the power semiconductor can be prevented from being damaged by the over heating of the radiator.
Description
The present invention relates to a kind of fender guard and guard method thereof of power semiconductor of elevator; specifically; relate to a kind ofly can carry out multistage detection and can appropriately control to the temperature that is used for the semi-conductive radiator of cooling power to the temperature of this radiator; therefore so that do not make its temperature reach its maxim, and protect the power semiconductor fender guard and the guard method thereof of the improved elevator that power semiconductor do not damage because of being heated.
Elevator is normally controlled by a rectifier and an inverter (each all comprises a power semiconductor); in power semiconductor; because undesirable superheat appears in the switching manipulation meeting of the repetition of this power semiconductor; therefore; should not wish overheated being controlled within the predetermined scope that exist with this, so that protect described power semiconductor.
Please refer to Fig. 1 now; the power semiconductor fender guard of elevator comprises that one is used to detect and is used to cool off because the Temperature Detector 10 of the temperature of the overheated radiator 14 that switching manipulation produced of this power semiconductor; one is used for according to the operation controller 20 of being controlled the elevator operation by Temperature Detector 10 detected temperature; a driver element 30 that is used for driving an induction motor (IM) M1 according to the control signal of operation controller 20; an error handling unit 40 that is used for handling the error of this elevator, and an error display unit 50 that is used for showing the error of this elevator according to the error handling result of error handling unit 40 according to the control signal of operation controller 20.
Here, as shown in Figure 3, Temperature Detector 10 comprises a power semiconductor 12, one wherein is equipped with power semiconductor 12, is used to cool off by power semiconductor 12 caused overheated radiatores 14, and one is installed in the Temperature Detector 16 that is used to detect described heating temperature on the radiator 14.
Now, will a kind of work of power semiconductor fender guard of conventional elevator be illustrated.
At first, when being carried out the operation master mode by operation controller 20, at first step S1, Temperature Detector 16 detects the temperature T f of radiator 14, and at the second step S2, operation controller 20 is compared temperature T f with predefined temperature T a.Here; predetermined temperature T a is that radiator 14 can protect power semiconductor 12 to avoid the peak of cause thermal damage; result as above-mentioned comparison; if temperature T f is lower than predefined temperature T a; so at the 3rd step S3; control signal of operation controller 20 outputs is given driver element 30, driver element 30 driven induction motor M1, described elevator normal operation.
Simultaneously, as the result of above-mentioned comparison, if temperature T f is greater than or equal to predefined temperature T a, so at the 4th step S4, operation controller 20 these elevators of judgement can not be worked, and export a control signal and give error handling unit 40, and error handling unit 40 is finished first-order error and handled.At the 5th step S5, error display unit 50 demonstrates this elevator and can not work, and at the 6th step S6, driver element 30 shuts down induction motor (IM) M1 according to a control signal of operation controller 20, and described elevator stops work.
Yet as mentioned above, the power semiconductor fender guard and the guard method thereof of conventional elevator have a shortcoming; if promptly an elevator works long hours; the temperature of this radiator just surpasses predetermined temperature value so, the result, and this elevator may be damaged owing to the overheated of described radiator.
Therefore, an object of the present invention is to provide a kind of elevator controller, this controller has overcome those problems that run in the power semiconductor fender guard of the elevator of routine.
Another object of the present invention provides a kind ofly can carry out multistage detection to the temperature that is used for the semi-conductive radiator of cooling power; and can appropriately control the temperature of this radiator; therefore so that do not make its temperature reach its maxim, and protect the power semiconductor fender guard and the guard method thereof of the improved elevator that power semiconductor do not damage because of being heated.
In order to reach above purpose, the invention provides a kind of power semiconductor fender guard of elevator, this device comprises a multistage Temperature Detector that is used for detecting according to a kind of multistage method radiator temperature; One is used to judge by the detected temperature of described multistage Temperature Detector whether reach an analog value and be used to set the temperature controller of the multistage hardening time (astep-by cooling time) of described radiator; One is used for according to the judged result of described temperature controller and the operation controller of predefined hardening time control elevator operation; Control signal that is used for according to described temperature controller shows the running state display unit based on the elevator of the running state of the result's of described multistage temperature detection described elevator; A driver element that is used for according to an induction motor (IM) of control signal control of described operation controller; An error handling unit that is used for handling the error of described elevator, and an error display unit that is used for showing the error of described elevator according to the control signal of described error handling unit according to the control signal of described operation controller.
In order to reach above purpose, the present invention also provides a kind of guard method of power semiconductor of elevator, and this method comprises following these steps: first step is to use a multistage Temperature Detector to detect the temperature of radiator and judges whether this elevator is in running state when the operation master mode is available; Second step is to use a temperature controller to be compared by first step measured temperature and a predefined temperature when this elevator is in running state; The 3rd step is to handle the error of this elevator when the temperature of this radiator surpasses a predetermined value according to the control signal of described operation controller, shows the error of this elevator and makes this elevator stop work; The 4th step is to finish normal operation when the temperature of this radiator is lower than a predefined temperature; The 5th step is to utilize described temperature controller to judge whether the temperature of described radiator is between one first C.T and one second C.T when result that described elevator carries out owing to first step quits work, when the temperature of this radiator is between them, allow described elevator to have one section floor time that is used for the semi-conductive schedule time length of cooling power, and recover a kind of operation master mode; And the 6th step is to utilize described temperature controller to judge whether the temperature of described radiator is between second C.T and the predefined temperature when the 5th condition can not satisfy; and when being between them, this temperature allow this elevator to have the floor time of one section schedule time length; so that the temperature of this radiator is descended, and recovers described operation master mode.
Fig. 1 is the block scheme of the power semiconductor fender guard of a conventional elevator.
Fig. 2 is the order drawing of guard method of the power semiconductor of a conventional elevator.
Fig. 3 is the planar view of the Temperature Detector of Fig. 1.
Fig. 4 is the block scheme according to the fender guard of elevator power semiconductor of the present invention.
Fig. 5 is the planar view of the multistage Temperature Detector of Fig. 4.
Fig. 6 is the curve of demonstration according to the relation between the temperature and time of the radiator of elevator power semiconductor of the present invention guard method.
Fig. 7 is the figure of the relation between temperature T 1, T2 and the T3 of the power semiconductor of a width of cloth displayed map 4 and radiator.
Fig. 8 is the order drawing according to the power semiconductor guard method of elevator of the present invention.
With reference to figure 4; the power semiconductor fender guard of elevator comprises a multistage Temperature Detector 60 that is used for radiator temperature is carried out multistage detection; one be used for by with relatively judged by the same predefined temperature of multistage Temperature Detector 60 detected temperature detected temperature whether with a temperature controller 70 that predetermined temperature rank are relevant; an operation controller 20 that is used for according to the operation of the judgement of temperature controller 70 control elevator, and control signal that is used for according to temperature controller 70 shows the elevator running state display unit 80 based on the running state of the result's of multistage Temperature Detector 60 elevator.In addition, the present invention also comprises a driver element 30, an error handling unit 40 and an error display unit 50, and these all did explanation in advance in routine techniques.
Here, as shown in Figure 5, multistage Temperature Detector 60 comprises 12, one radiatores 14 of a power semiconductor and a multistage Temperature Detector 18.In addition, multistage Temperature Detector 18 comprises one group of switch, and wherein each switch is according to multistage temperature (a step-bytemperature) ON/OFF.
To the operation according to the power semiconductor fender guard of a kind of elevator of the present invention be illustrated now.
At first referring to Fig. 6 and 8, according to described power semiconductor guard method, no matter when the temperature of radiator 14 reaches predefined temperature rank, and it is the floor time of hardening time △ t1 and △ t2 that operation controller 20 all has a segment length.
When carrying out a kind of operation master mode of operation controller 20, at the 11 step S11, multistage Temperature Detector 60 detects the temperature T f of radiatores 14.That is to say, in the multistage Temperature Detector 18 of multistage Temperature Detector 60, a switch is connected with corresponding temperature rank, and the temperature of radiator 14 is in out state of switch via one is transferred to temperature controller 70, the temperature T f of radiator 14 just is detected.
Then, in the 12 step S12, it is in service that operation controller 20 judges whether described elevator is in.
Here, temperature controller 70 with the same predefined multistage temperature of the temperature T f of radiator 14 in addition relatively and judge that temperature T f is whether relevant with predetermined temperature rank.For example, in temperature controller 70, can set three temperature rank.Promptly be defined the highest temperature Ta that power semiconductor 12 is not caused the radiator of pyrolytic damage, the first C.T Tb and second a C.T Tc who is lower than the first C.T Tb who is lower than temperature T a.
Therefore, the result as the 12 step S12 judges that described elevator is in running state, and at the 13 step S13, temperature controller 70 judges whether temperature T f is greater than or equal to temperature T a.
If temperature T f is greater than or equal to temperature T a, at the 14 step S14, error handling unit 40 carries out error handling according to the control signal of operation controller 20, and at the 15 step S15, error display unit 50 demonstrates described elevator and can not work, at the 16 step S16, driver element 30 is according to the control signal driven induction motor M1 of operation controller 20, and described elevator stops work.
Simultaneously, at the 13 step S13, if temperature T f is lower than temperature T a, described elevator is according to the 17 step S17 normal operation.
Simultaneously, in the 12 step S12, if judging described elevator, operation controller 20 can not work, so, in the 18 step S18, temperature controller 70 judges whether temperature T f is lower than the first C.T Tb and whether temperature T f is greater than or equal to the second C.T Tc.
Then; if realized the condition of the 18 step S18; temperature controller 70 is just exported a signal and is given operation controller 20 so; and driver element 30 shuts down induction motor (IM) M1, and at the 19 step S19, one section hardening time △ t1 of described elevator pause; and radiator temperature Tf reduces; in addition, at the 20 step S20, elevator running state display unit 80 demonstrates described elevator and is in contents such as stopped status and residue floor time.At the 21 step S21, if judging hardening time △ t1, finishes by temperature controller 70, so, carry out the 11 step S11.Here, elevator running state display unit 80 shows the residue floor time with the method to countdown excess time at the cab end or the hall end of described elevator system.
Simultaneously, if fail to satisfy the condition of the 18 step S18, in the 22 step S22, temperature controller 70 judges whether temperature T f is lower than temperature T a and judges whether temperature T f is greater than or equal to the first C.T Tb so.
After this; if realized the condition of the 22 step S22; temperature controller 70 output control signals are given operation controller 20; and driver element 30 shuts down induction motor (IM) M1; and at the 23 step S23; described elevator is shut down one section predetermined hardening time △ t2, and the temperature T f of radiator is descended.In addition; at the 24 step S24, elevator running state display unit 80 shows that described elevator is in contents such as stopped status and residue floor time, and at the 25 step S25; if temperature controller 70 is judged hardening time △ t2 and finished, so just carry out the 11 step S11.
Simultaneously, if can not satisfy the condition of the 22 step S22, just carry out the 13 step S13.
Here, referring to Fig. 7, the difference between the internal temperature T1 of described power semiconductor and the temperature T 2 of described radiator is the internal temperature △ T1 of the power semiconductor that increases with the increase that makes electric power.In addition, the difference between the temperature T 3 around the temperature T 2 of described radiator and its is the △ T2 of the described radiator that increases with the increase that makes electric power.That is to say that these conditions can be expressed as follows: T1=T2+ △ T1, T2=T3+ △ T2, and T1=T3+ △ T1+ △ T2.
In addition, the internal temperature △ T1 that hardening time △ t1 can be defined as described power semiconductor cools away the used time, and the temperature △ T2 that cooling can be defined as described radiator to △ t2 the time cools away the used time.
As mentioned above; the power semiconductor fender guard of elevator and guard method thereof can detect described radiator temperature with a kind of multistage method satisfactorily; and one section suitable hardening time is provided when detected temperature reaches corresponding temperature rank, so just prevented because the overheated cause thermal damage that described power semiconductor is caused of radiator during described elevator long-play.
Claims (6)
1, a kind of power semiconductor fender guard of elevator comprises:
A multistage Temperature Detector that is used for detecting radiator temperature with a kind of multistage method;
One is used to judge whether the temperature that is detected by described multistage Temperature Detector reaches a corresponding temperature value and be used to set the temperature controller of the multistage hardening time (a step-bycooling time) of described radiator;
One is used for judging and predefined hardening time is controlled the operation controller of the operation of an elevator according to described temperature controller a kind of;
One is used for showing elevator running state display unit based on the running state of the described elevator of multistage temperature detection result according to the control signal of described temperature controller;
A driver element that is used for according to an induction motor (IM) of control signal control of described operation controller;
An error handling unit that is used for handling the error of described elevator according to the control signal of described operation controller, and
An error display unit that is used for showing the error of described elevator according to the control signal of described error handling unit.
2, device according to claim 1 is characterized in that described elevator running state display unit is used to show the residue floor time of described elevator.
3, a kind of power semiconductor guard method of elevator may further comprise the steps:
A first step, this step use a kind of multistage Temperature Detector to detect the temperature of radiator and judge whether described elevator is in running state when the operation master mode is available;
One second step, this step utilize a temperature controller to be compared by the same predefined temperature of the detected temperature of described first step when described elevator is in running state;
A third step, this step are handled the error of elevator according to the control signal of described operation controller when the temperature of radiator surpasses a predetermined temperature value, show the described error of described elevator and make this elevator stop work;
One the 4th step, this step is moved when the temperature of radiator is lower than a predefined temperature normally;
One the 5th step, this step uses described temperature controller to judge whether the temperature of this radiator is between first C.T and second C.T when elevator quits work owing to the result of described first step, and when the temperature of radiator is between them, what allow that this elevator has one section schedule time length is used for the semi-conductive floor time of cooling power, and recovers a kind of operation master mode; And
One the 6th step; this step uses described temperature controller to judge whether the temperature of described radiator is between described second C.T and the predefined temperature when described the 5th condition can not be met; and when described temperature is when being between them; allow this elevator to have the floor time of a schedule time length; so that reduce this radiator temperature, and recover described operation master mode.
4, method according to claim 3 is characterized in that described predefined temperature is power semiconductor not to be caused a highest temperature of the radiator of any pyrolytic damage.
5, method according to claim 3 it is characterized in that described predefined temperature is higher than second C.T, and described second C.T is higher than first C.T.
6, method according to claim 3; it is characterized in that when when elevator is in stopped status described in described the 5th step and described the 6th step residue floor time is displayed on the cab end or the hall end of described elevator system according to the method for counting described excess time.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940021588A KR0166774B1 (en) | 1994-08-30 | 1994-08-30 | Safe guard equipment and method for elevator power semiconductor |
| KR21588/94 | 1994-08-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1126695A CN1126695A (en) | 1996-07-17 |
| CN1047359C true CN1047359C (en) | 1999-12-15 |
Family
ID=19391499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95116922A Expired - Fee Related CN1047359C (en) | 1994-08-30 | 1995-08-30 | Power semiconductor protection apparatus for elevator and protection method thereof |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR0166774B1 (en) |
| CN (1) | CN1047359C (en) |
| SG (1) | SG44325A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101052580B (en) * | 2005-09-30 | 2012-04-04 | 三菱电机株式会社 | Elevator operation controller |
| JP2011026065A (en) * | 2009-07-24 | 2011-02-10 | Hitachi Ltd | Elevator control device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069923A (en) * | 1974-12-16 | 1978-01-24 | Ebasco Services Incorporated | Buoyancy elevator for moving a load in an industrial facility such as a nuclear power plant |
| US4484127A (en) * | 1982-05-28 | 1984-11-20 | Otis Elevator Company | Inverter power transistor protection |
| US4776433A (en) * | 1988-01-25 | 1988-10-11 | Westinghouse Electric Corp. | Elevator door control system |
-
1994
- 1994-08-30 KR KR1019940021588A patent/KR0166774B1/en not_active IP Right Cessation
-
1995
- 1995-08-30 SG SG1995001247A patent/SG44325A1/en unknown
- 1995-08-30 CN CN95116922A patent/CN1047359C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069923A (en) * | 1974-12-16 | 1978-01-24 | Ebasco Services Incorporated | Buoyancy elevator for moving a load in an industrial facility such as a nuclear power plant |
| US4484127A (en) * | 1982-05-28 | 1984-11-20 | Otis Elevator Company | Inverter power transistor protection |
| US4776433A (en) * | 1988-01-25 | 1988-10-11 | Westinghouse Electric Corp. | Elevator door control system |
Also Published As
| Publication number | Publication date |
|---|---|
| SG44325A1 (en) | 1997-12-19 |
| KR960007417A (en) | 1996-03-22 |
| CN1126695A (en) | 1996-07-17 |
| KR0166774B1 (en) | 1999-03-30 |
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