CN102001561A - Elevator control device - Google Patents
Elevator control device Download PDFInfo
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- CN102001561A CN102001561A CN2010102601300A CN201010260130A CN102001561A CN 102001561 A CN102001561 A CN 102001561A CN 2010102601300 A CN2010102601300 A CN 2010102601300A CN 201010260130 A CN201010260130 A CN 201010260130A CN 102001561 A CN102001561 A CN 102001561A
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Abstract
The invention provides an elevator control device capable of making a carriage (2) lift by the drive of a three-phase alternating current motor (1), comprising a two-axle/three-axle converter (12) for supplying the voltage for making the current for default phase determination flow to each phase of the three-phase alternating current motor; a default phase abnormity detector (23) for detecting the default phase abnormity of the three-phase alternating current motor based on the voltage value of each phase of the three-phase alternating current motor along with the voltage supplying work by the two-axle/three-axle converter; and a running control part (30) for immediately stopping the running start work of the carriage when the default phase abnormity detector detects the default phase abnormity.
Description
Technical field
The present invention relates to the to possess three-phase alternating current motor elevator control device of (motor) relates in particular to the unusual elevator control device of phase shortage that detects three-phase alternating current motor.
Background technology
Usually, in elevator, possess the driver element of three-phase alternating current motor as car (elevator car).This three-phase alternating current motor has three phase windings, and this three-phase alternating current motor rotates by in order three phase windings being carried out excitation.But,,, then also can't be rotated control with predetermined speed even phase shortage takes place among the three-phase mutually if because of vibration waits some reason.Therefore, car can travel with unusual speed, thereby is in dangerous state.
Fig. 8 is the figure that represents the structure example of elevator control device in the past.In addition, the DE11 among the figure～13 expression subtracters, AD11 represents adder.In addition, " SPC " among the figure is rate control instruction, and " WTC " is load equalization torque (torque) current-order.These instructions are from being equivalent to the not shown ride control portion output of main control unit.
This elevator control gear has three-phase alternating current motor 31 as electrical motor, be provided with comprise inverter (inverter) 34 each control convenience as electric motor drive unit.Three-phase alternating current motor 31 has U phase, V phase and W this three phase winding mutually, and three-phase alternating current motor 31 is rotated by in order this three phase winding being carried out excitation.In addition, in the example of Fig. 8, the state that phase shortage has taken place U mutually is shown.
Rotation freely is equipped with pulley (sheave) 31a on the S. A. of this three-phase alternating current motor 31, and is equipped with magnet stopper 31b in the mode that the S. A. that connects this pulley 31a and three-phase alternating current motor 31 is braked.Volume hangs with hawser (rope) 31c on this pulley 31a, and linking at the end of this hawser 31c has car 32, and linking at the other end has balance weight (counter weight) 33.
If three-phase alternating current motor 31 is driven, then pulley 31a rotation is accompanied therewith, and car 32 and balance weight 33 are carried out lifting work via hawser 31c in the well-bucket mode.In addition, at this moment, magnet stopper 31b is in the state of separating from pulley 31a.
In addition, rotatable phase detector 35 is installed on the S. A. of three-phase alternating current motor 31.This rotatable phase detector 35 detects the phase place (below be called rotatable phase θ 0) of the rotor of three-phase alternating current motor 31.By this rotatable phase detector 35 detected rotatable phase θ 0, by differentiator 36 by differential, and as the expression present speed speed signal V be fed (feedback) to speed control system.
On the other hand, any two-phase of the U phase, V phase, W that constitutes three-phase alternating current motor 31 among mutually (this for U mutually with W mutually) be provided with current probe 40a, 40b.Current probe 40a is arranged at U phase side, and current probe 40b is arranged at W phase side.Drives three-phase alternating current motor 31 if the voltage by inverter 34 is supplied with, then the electric current " Iu " that flows on mutually at U detects by current probe 40a, W mutually on mobile electric current " Iw " detect by current probe 40b.
In addition, be zero such characteristic if three-phase alternating current motor 31 has that current value to three-phase adds up to.Therefore, about the electric current " Iv " of V phase, can calculate according to following formula (10).
Iv=-Iu-Iw ... formula (10)
3/2 convs 41, based on by current probe 40a, 40b respectively detected electric current " Iu ", " Iw " with the phase place of each electric current that flows on mutually of three-phase alternating current motor 31 (below be called current phhase θ), three shaft currents that are directed to U phase, V phase, W phase are converted to 2 shaft currents, and this 2 shaft current comprises torque current " Iq " and as the flux current " Id " of its orthogonal axes electric current.
So that " Id " among these 2 converted shaft currents follows the command value Id of d shaft current
*(=0), make " Iq " follow above-mentioned torque current instruction " Iq from speed controller 38
*" mode, calculate 2 shaft voltages instructions " Vd respectively by current controller 39
*", " Vq
*".
In the present embodiment, as from the torque current of the output of speed controller 38 with from the torque current instruction " Ibl of first-order lag low-pass filter 45
*" being imported into adder AD11, the operation result that is generated by this adder AD11 is as torque current instruction " Iq
*" be output to subtracter DE13.
And, calculate torque current " Iq " from 3/2 convs 41 with respect to torque current instruction " Iq from adder AD11 by subtracter DE13
*" difference, this result of calculation is output to current controller 39.
In addition, calculate from the torque current " Id " of 3/2 convs 41 above-mentioned command value " Id by subtracter DE12 with respect to the d shaft current
*" difference, this result of calculation is output to current controller 39.
In addition, 2/3 convs 42 will be from the above-mentioned 2 shaft voltages instruction " Vd of current controller 39
*", " Vq
*" be converted to 3 shaft voltages instructions " Vu
*", " Vv
*", " Vw ", and export inverter 34 to.
In addition, in the bottom of car 32, be provided with the detectors of load 43 that is used to detect the load-carrying in the car.By this detectors of load 43 detected load signal Wt, be provided for weight comparator 44.Weight comparator 44 calculates the weight difference of car 32 and balance weight 33 based on this load signal Wt.If load equalization torque current instruction " WTC " becomes effectively, then pass through first-order lag low-pass filter (low-pass filter) 45 as balancing moment current-order " Ibl with the corresponding overbalance torque of described weight difference
*" be output to adder AD11.
In the elevator control gear of present embodiment, the unusual inscape of phase shortage as being used to detect three-phase alternating current motor 31 possesses velocity anomaly detector 46.
If have phase shortage in three-phase alternating current motor 31, then three shaft voltage Vu, Vv, Vw can be as the torque current instruction " Iq that is generated by speed controller 38
*" like that from inverter 34 outputs.Be judged as the speed command V of speed command arithmetic and logic unit 37 at velocity anomaly detector 46
*The difference of value and the value of the speed signal V of expression rotative speed surpass certain value, can't make the rotative speed V of three-phase alternating current motor 31 follow speed command " V by speed control
*" situation under, by the torque current instruction " Iq that generates by speed controller 38
*" (error) signal " SP_ERR " of makeing mistakes, carry out car 32 travel promptly stop.
Like this,, in the travelling of car, detected under the situation of the abnormal speed more than the predetermined value in the past, and be judged to be three-phase alternating current motor generation phase shortage, thereby car is promptly stopped.
In addition, as carrying out the technology of abnormality detection before the beginning of travelling of car, known have for example No. 2501109 communique of Japanese Patent.In this communique, the output voltage that is arranged at the conv (converter) in the electric power supply system is monitored, under this output voltage becomes situation more than the predeterminated level, be judged to be three-phase alternating-current supply phase shortage has taken place.
In the unusual method of the phase shortage that detects three-phase alternating current motor in the travelling of car as described above, owing to promptly stop when unusual detecting, the passenger in the car might fall down, with danger.In addition, though detected unusual method like that before the beginning of travelling of car just like above-mentioned communique, this method is to detect the unusual method of phase shortage of three-phase alternating-current supply, and is not to be object with the three-phase alternating current motor.
Summary of the invention
The object of the present invention is to provide the phase shortage that can before the beginning of travelling, detect three-phase alternating current motor reliably to carry out the elevator control device that the high operation of safety and reliability is controlled unusually.
The present invention is applied to elevator control device, this elevator control device makes car carry out lifting work by the driving of three-phase alternating current motor, possess: 2/3 convs, it supplied with the voltage that the electric current be used to make phase shortage confirm usefulness flows mutually to each of described three-phase alternating current motor before the beginning of travelling of described car; Phase shortage abnormality detection unit, it is accompanied by the voltage supply work of being undertaken by described 2/3 convs, and based on the magnitude of voltage of each phase of described three-phase alternating current motor, the phase shortage that detects described three-phase alternating current motor is unusual; And the ride control unit, it is being detected under the unusual situation of phase shortage by described phase shortage abnormality detection unit, forbids that immediately travelling of described car start working.
Description of drawings
Fig. 1 is the figure of structure of the elevator control device of expression embodiments of the present invention;
Fig. 2 is flow process (flow chart) figure of the flow process of the elevator that is used for the illustrating embodiments of the present invention processing when travelling;
Fig. 3 is the diagram of circuit that the phase shortage that is used to illustrate the elevator of embodiments of the present invention is confirmed the flow process handled;
Fig. 4 is the sequential chart of each signal of the three-phase alternating current motor of the elevator of embodiments of the present invention when cab under the situation of phase shortage not taking place travelling;
Fig. 5 is the sequential chart of each signal of the three-phase alternating current motor of the elevator of embodiments of the present invention when phase shortage under the situation of phase shortage not taking place confirming;
Fig. 6 is the sequential chart of each signal of the three-phase alternating current motor of the elevator of embodiments of the present invention when cab under the situation of phase shortage having taken place travelling;
Fig. 7 is the sequential chart of each signal of the three-phase alternating current motor of the elevator of embodiments of the present invention when phase shortage under the situation of phase shortage having taken place confirming;
Fig. 8 is the figure that represents the structure example of elevator control device in the past.
The specific embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described.
Fig. 1 is the figure of structure example of the elevator control device of expression embodiments of the present invention.In addition, the DE1 among the figure～3 expression subtracters, AD1～2 expression adders.In addition, " SPC " is rate control instruction, and " WTC " is the instruction of load equalization torque current, and " CHK " is the galvanoscopy instruction.These instructions are from ride control portion 30 outputs that are equivalent to main control unit.
The elevator control device of present embodiment has three-phase alternating current motor 1 as electrical motor, as the electric motor drive unit of this three-phase alternating current motor 1, is provided with each control convenience that comprises inverter 4.Three-phase alternating current motor 1 have U phase, V phase, W this three phase winding mutually, and three-phase alternating current motor 1 is rotated by in order this three phase winding being carried out excitation.In addition, in the example of Fig. 1, the state that phase shortage has taken place U mutually is shown.Here, setting three-phase alternating current motor 1 is the synchronous motor that possesses permanent magnet.
Rotation freely is equipped with pulley 1a on the S. A. of this three-phase alternating current motor 1, and is equipped with magnet stopper 1b in the mode that the S. A. that connects this pulley 1a and three-phase alternating current motor 1 is braked.Volume hangs with hawser 1c on this pulley 1a, and linking at the end of this hawser 1c has car 2, and linking at the other end has balance weight 3.
If three-phase alternating current motor 1 is driven, then pulley 1a rotation is accompanied therewith, and car 2 and balance weight 3 are carried out lifting work via hawser 1c in the well-bucket mode.In addition, at this moment, magnet stopper 1b is in the state of separating from pulley 1a.
In addition, rotatable phase detector 5 is installed on the S. A. of three-phase alternating current motor 1.This rotatable phase detector 5, the rotatable phase θ 0 of detection three-phase alternating current motor 1.By this rotatable phase detector 5 detected rotatable phase θ 0, by differentiator 6 by differential, and as the expression present speed speed signal V be fed to speed control system.
On the other hand, any two-phase of the U phase, V phase, W that constitutes three-phase alternating current motor 1 among mutually (this for U mutually with W mutually) be provided with current probe 10a, 10b.Current probe 10a is arranged at U phase side, and current probe 10b is arranged at W phase side.Drives three-phase alternating current motor 1 if the voltage by inverter 4 is supplied with, then the electric current " Iu " that flows on mutually at U detects by current probe 10a, W mutually on mobile electric current " Iw " detect by current probe 10b.
In addition, in three-phase alternating current motor 1, if having that current value to three-phase adds up to then be zero such characteristic.Therefore, about the electric current " Iv " of V phase, can calculate according to following formula (1).
Iv=-Iu-Iw ... formula (1)
3/2 convs 11, based on each current phhase θ mutually by current probe 10a, 10b difference detected electric current " Iu ", " Iw " and three-phase alternating current motor 1, three shaft currents that are directed to U phase, V phase, W phase are converted to 2 shaft currents, and this 2 shaft current comprises torque current " Iq " and its orthogonal axes electric current " Id ".The change type of this moment is expressed as following formula (2).
Current controller 9 is so that the electric current " Id " among these 2 converted shaft currents follows the command value Id of d shaft current
*(=0), make another electric current " Iq " follow above-mentioned torque current instruction " Iq from speed controller 8
*" mode, calculate 2 shaft voltages instructions " Vd respectively
*", " Vq
*".
In the present embodiment, as from the torque current of the output of speed controller 8 with from the torque current instruction " Ibl of first-order lag low-pass filter 15
*" being imported into adder AD1, the operation result that is generated by this adder AD1 is as torque current instruction " Iq
*" be output to subtracter DE3.For the work of first-order lag low-pass filter 15, the back is described.
And, calculate torque current " Iq " from 3/2 convs 11 with respect to above-mentioned torque current instruction " Iq from adder AD1 by subtracter DE3
*" difference, this result of calculation is output to current controller 9.
In addition, calculate from the torque current " Id " of 3/2 convs 11 above-mentioned command value " Id by subtracter DE2 with respect to the d shaft current
*" difference, this result of calculation is output to current controller 9.
In addition, 2/3 convs 12, the above-mentioned 2 shaft voltages instruction " Vd that will calculate by current controller 9
*", " Vq
*" be converted to 3 shaft voltages instructions " Vu
*", " Vv
*", " Vw ", and export inverter 4 to.That is, 2/3 convs 12 are before the beginning of travelling of car 2, each of three-phase alternating current motor 1 are supplied with mutually the voltage feed unit of the voltage that the electric current that is used to make phase shortage confirm usefulness flows.The change type of this moment is expressed as following formula (3).
Inverter 4 for example uses modes such as PWM, and three-phase alternating current motor 1 is supplied with needed voltage.
In addition, in the bottom of car 2, be provided with the detectors of load 13 that is used to detect the load-carrying in the car.By this detectors of load 13 detected load signal Wt, be provided for weight comparator 14.Weight comparator 14 calculates the weight difference of car 2 and balance weight 3 based on this load signal Wt.If load equalization torque current instruction " WTC " becomes effectively, then pass through first-order lag low-pass filter 15 as balancing moment current-order " Ibl with the corresponding overbalance torque of described weight difference
*" be output to adder AD1.
And then, in the elevator control device of present embodiment,, possess the instruction of d shaft current switch 21, first-order lag low-pass filter 22 and phase shortage anomaly detector 23 as the unusual inscape of phase shortage that is used to detect three-phase alternating current motor 1.
D shaft current instruction switch 21 checking that instruction " CHK " becomes under the actv. situation, switches to constant current value " Ichk0 " with the instruction of d shaft current.First-order lag low-pass filter 22 is provided with for the phase delay that makes this constant current value " Ichk0 ".
In such structure, in the elevator control device of present embodiment, before the beginning of travelling of elevator, that is to say at car 2 and be about to before each floor begins to travel, supply with the voltage that is used to make the constant current beyond zero to flow mutually for all of three-phase alternating current motor 1.And beginning through after the certain hour of supplying with from this voltage, whether the current value of each phase of inspection three-phase alternating current motor 1 surpasses is in advance judged with a reference value of setting for phase shortage.
Why wait for through certain hour from beginning of supplying with of voltage, be because will be in each current stabilization that goes up mutually that flows in three-phase alternating current motor 1 state under check.Even if surpassed under the situation of a reference value for the voltage of each arbitrary phase in mutually in the result who checks, phase shortage has taken place also to be judged to be three-phase alternating current motor 1, thereby forbids that immediately travelling of car 2 start working.
In the present embodiment, in phase shortage is confirmed, be that the d shaft current flows because make torque with three-phase alternating current motor 1 produce the electric current that does not have direct relation, so when phase shortage is confirmed, can not produce torque basically.But, be under the situation of synchronous motor as previously mentioned at three-phase alternating current motor 1, because the phase place of the electric current that is flowed when phase shortage is confirmed produces torque sometimes in permanent magnet.
Particularly, if the electric current of Iu=I, Iv=-I/2, Iw=-I/2 is flowed, then when current phhase θ=0 °, the torque that in permanent magnet, will produce maximum.Because this torque produces, car 2 can produce vibration, thereby brings sense of discomfort to the passenger.
So the elevator control gear of present embodiment by utilizing first-order lag low-pass filter 22 to make the phase delay of the electric current of each phase that flows in three-phase alternating current motor 1, suppresses generation of torque when phase shortage is confirmed.
In addition, three-phase alternating current motor 1 also can be an induction motor (IM).
Below, at length describe about the work of treatment of the elevator control gear of present embodiment.
Fig. 2 is the diagram of circuit of the flow process of the cab that is used to illustrate the elevator of the embodiments of the present invention processing when travelling.Fig. 3 is the diagram of circuit that the phase shortage that is used to illustrate the elevator of embodiments of the present invention is confirmed the flow process handled.In addition, the processing shown in these diagram of circuits is carried out under the control as the ride control portion 30 of main control unit basically.
(a) situation of phase shortage does not take place in three-phase alternating current motor 1
Fig. 4 is the sequential chart of each signal of the three-phase alternating current motor 1 of the elevator of embodiments of the present invention when car under the situation of phase shortage not taking place travelling.Fig. 5 is the sequential chart of each signal of the three-phase alternating current motor 1 of the elevator of embodiments of the present invention when phase shortage under the situation of phase shortage not taking place confirming.
Now, the car 2 of setting elevator stops at certain floor.At this moment, so that the mode that car 2 does not move to the overbalance direction, magnet stopper 1b and pulley 1a butt.Under this state, as shown in Figure 4, if from ride control portion 30 output travel sign on " RUN ", promptly the sign on " RUN " of travelling becomes effectively (step S1), then ride control portion 30 is as shown in Fig. 4 is same, to check that instruction " CHK " is made as effectively (step S2), the beginning phase shortage confirms to handle (step S3).
Shown in the diagram of circuit of Fig. 3, ride control portion 30 in phase shortage confirm to be handled, at first, as initial setting, switches to 0 ° (step S31) with the current phhase θ of three-phase alternating current motor 1.This is because based on the characteristic of three-phase alternating current motor 1, by current phhase θ is set at 0 °, electric current is gone up mutually equably at each flowed.
And ride control portion 30 utilizes d shaft current instruction switch 21, and the current switching that will flow in three-phase alternating current motor 1 is constant current value " Ichk0 ".At this moment, produce, make constant current value " Ichk0 ", detect current-order " Ichk as phase shortage by first-order lag low-pass filter 22 in order to prevent above-mentioned torque
*" export speed control system (step S32) to.
This phase shortage detects current-order " Ichk
*", be that 0 instruction is input to adder AD2 with electric current, and the operation result that is generated by this adder AD2 is as d shaft current instruction " Id
*" be provided for current controller 9.In addition, offer the q shaft current instruction " Iq of current controller 9 equally
*" be 0.Thus, via 9,2/3 convs 12 of current controller, inverter 4, three-phase alternating current motor 1 supplied be used to make the constant current required voltage (step S33) that flows.
Do not taking place under the situation of phase shortage, as shown in Figure 5, the U phase current instruction Iu that is obtaining with following formula (4)
*, the V phase current instruction Iv that obtains with following formula (5)
*And the W phase current of obtaining with following formula (6) instruction Iw
*Under the situation about being output, in each winding that constitutes the U phase of three-phase alternating current motor 1, V phase, W phase, the U phase current Iu that obtains with following formula (7) of flowing, the V phase current Iv that obtains with following formula (8) and the W phase current Iw that obtains with following formula (9).
Iu
*=Id
*Cos0=Id
*Formula (4)
Iv
*=Id
*Cos (0-2 π/3)=-Id
*/ 2 formulas (5)
Iw
*=Id
*Cos (0-4 π/3)=-Id
*/ 2 formulas (6)
Iu=Id
*Cos0=Id
*Formula (7)
Iv=Id
*Cos (0-2 π/3)=-Id
*/ 2 formulas (8)
Iw=Id
*Cos (0-4 π/3)=-Id
*/ 2 formulas (9)
At this moment, if three-phase alternating current motor 1 is the synchronous motor that possesses permanent magnet, if then the phase place of this permanent magnet, be that rotatable phase θ approaches 0 ° or 180 °, then can produce torque, if but rotatable phase θ approaches 90 ° or 270 ° then can not produce torque.
Detecting current-order " Ichk from phase shortage
*" output begun to pass through certain hour " tchk " ("Yes" of step S34) afterwards, phase shortage anomaly detector 23 is judged 3 shaft voltages instructions " Vu
*", " Vv
*", " Vw
*" whether be in the predetermined normal range, at this absolute value of judging 3 shaft voltages instructions whether smaller or equal to a reference value Vchk (step S35, S37, S38).
At this, if the voltage of any phase in the three-phase all smaller or equal to a reference value Vchk ("No" of step S38), then phase shortage anomaly detector 23 is judged to be three-phase alternating current motor 1 phase shortage does not take place, and error signal " ERR " is made as invalid (step S39).That is, phase shortage anomaly detector 23 is based on the magnitude of voltage of each phase of three-phase alternating current motor, detects the unusual phase shortage abnormality detection unit of phase shortage of three-phase alternating current motor 1.
And ride control portion 30 makes current phhase θ revert to the detected value (step S40) of rotatable phase detector 5, and makes d shaft current instruction " Id
*" value converge on 0 (step S41), and finish phase shortage affirmation work.
In addition, the magnetic pole phase among the figure, the expression existing phase place of permanent magnet (position).Magnetic pole phase is identical with rotatable phase basically, is the phase place of the position of expression physics.In addition, because current phhase is to be carried out control with the synchronous mode of magnetic pole phase, so be also referred to as control phase sometimes.
Ride control portion 30 is accompanied by the end that phase shortage is confirmed, if it is invalid to check that as shown in Figure 4 instruction " CHK " becomes, then as shown in Fig. 4 is same, load equalization torque current instruction " WTC " is made as effectively (step S4).Follow in this, corresponding to the overbalance torque of car 2 and the weight difference of balance weight 3 by first-order lag low-pass filter 15 and as balancing moment current-order " Ibl
*" be output (step S5).
Balancing moment current-order " Ibl
*", as previously mentioned as q shaft current instruction " Iq
*" be provided for current controller 9.If this balancing moment current-order " Ibl
*" determine that then rate control instruction " SPC " becomes effectively (step S6) as shown in Figure 4.Thus, speed command arithmetic and logic unit 7 is started with speed controller 8, with predetermined speed drive three-phase alternating current motor 1 (step S7).At this moment, magnet stopper 1b is in open state, is accompanied by the driving of three-phase alternating current motor 1, and car 2 moves on ascent direction or descent direction via hawser 1c.
If car 2 arrives the purpose floor and stops ("Yes" of step S8), then ride control portion 30 as shown in Figure 4, it is invalid that the sign on of will travelling " RUN ", load equalization torque current instruction " WTC " and rate control instruction " SPC " are made as, and prepares next time travel (step S9).
(b) situation of phase shortage has taken place in three-phase alternating current motor 1
Fig. 6 is the sequential chart of each signal of the three-phase alternating current motor 1 of the elevator of embodiments of the present invention when car under the situation of phase shortage having taken place travelling.Fig. 7 is the sequential chart of each signal of the three-phase alternating current motor 1 of the elevator of embodiments of the present invention when phase shortage under the situation of phase shortage having taken place confirming.
As mentioned above, when car 2 travels, as shown in Figure 6, if export the sign on " RUN " (step S1) of travelling from ride control portion 30, then ride control portion 30 will check that instruction " CHK " is made as effectively (step S2) as shown in Figure 6, and the beginning phase shortage confirms to handle (step S3).
Ride control portion 30 in phase shortage confirm to be handled, at first, as initial setting, switches to 0 ° (step S31) with the current phhase θ of three-phase alternating current motor 1.Then, ride control portion 30 utilizes d shaft current instruction switch 21, and the current switching that will flow in three-phase alternating current motor 1 is constant current value " Ichk0 ", and makes it by first-order lag low-pass filter 22, detects current-order " Ichk as phase shortage
*" export speed control system (step S32) to.
This phase shortage detects current-order " Ichk
*", be input to adder AD2 with " 0 " of expression electric current 0, and the operation result that is generated by this adder AD2 is as d shaft current instruction " Id
*" be provided for current controller 9.Q shaft current instruction " Iq
*" be 0.Thus, via 9,2/3 convs 12 of current controller, inverter 4, three-phase alternating current motor 1 supplied be used to make the constant current required voltage (step S33) that flows.
Detecting current-order " Ichk from phase shortage
*" output begun to pass through certain hour " tchk " ("Yes" of step S34) afterwards, phase shortage anomaly detector 23 is confirmed 3 shaft voltages instructions " Vu
*", " Vv
*", " Vw
*" whether be in the predetermined normal range, promptly whether smaller or equal to a reference value Vchk (step S35, S37, S38).
At this, at the voltage instruction " Vu of for example U phase
*" absolute value | Vu| has surpassed under the situation of a reference value Vchk ("Yes" of step S35), is judged to be U phase shortage has taken place mutually, as shown in Figure 7 error signal " ERR " is made as effectively (step S36).
Taken place mutually under the situation of phase shortage at such U, as shown in Figure 7, because the electric current I u of U phase remains 0 and do not follow U phase current instruction Iu
*, and V mutually and W go up the electric current that only flows and produce mutually by the alternate difference of potential of V phase-W, these electric currents do not follow the V phase current and instruct Iv
*, W phase current instruction Iw
*So, 2 shaft voltages instruction Vd
*And Vq
*Increase (dispersing).
Its result, 3 shaft voltages instruction " Vu
*", " Vv
*", " Vw
*" absolute value also along with the process of time, disperse as shown in Figure 7, and surpass a reference value Vchk.
In addition, ride control portion 30 is at the voltage instruction " Vw of W phase
*" absolute value | Vw| has surpassed under the situation of a reference value Vchk ("Yes" of step S38), is judged to be W phase shortage has taken place mutually, and error signal " ERR " is made as effectively (step S36).
In addition, ride control portion 30 is about the voltage instruction " Vv of V phase
*" absolute value | Vv|, do not have piezoelectric detector even go up mutually at V, also can be according to the characteristic of " Iu "+" Iv "+" Iw "=0 of three-phase alternating current motor 1, as absolute value | Vv|=|Vu+Vw| calculates.Therefore, ride control portion 30 has surpassed in | the value of Vu+Vw| under the situation of a reference value Vchk ("Yes" of step S37), is judged to be V phase shortage has taken place mutually, and error signal " ERR " is made as effectively (step S36).
Ride control portion 30 after the phase shortage that detects three-phase alternating current motor 1 is unusual, makes current phhase θ revert to the detected value (step S40) of rotatable phase detector 5, and makes d shaft current instruction " Id
*" converge on 0 (step S41).
At this, because error signal " ERR " is effective as mentioned above, so ride control portion 30 as shown in Figure 6, the sign on of will travelling " RUN " and to check that instruction " CHK " is made as invalid is forbidden next time and later travelling start working (step S43).
That is, ride control portion 30 is detecting under the unusual situation of phase shortage, forbids that at once travelling of described car start working.At this moment, elevator control gear, preferred, by message demonstration and/or sound etc. the situation that phase shortage has taken place three-phase alternating current motor 1 is alarmed.
As described above, the elevator of embodiments of the present invention at each floor, before car 2 begins to travel, makes electric current flow on mutually and the prior confirmation phase shortage is unusual in each of three-phase alternating current motor 1.Thus, can avoid the danger that under the state of phase shortage car 2 travelled having taken place, can carry out the high operation control of safety and reliability at three-phase alternating current motor 1.
In a word, the present invention is not that to be defined in the respective embodiments described above former state constant, but the implementation phase can in the scope that does not break away from its purport, constitutive requirements be out of shape and specialize.In addition, utilize the suitable combination of disclosed a plurality of constitutive requirements in the respective embodiments described above, can form variety of way.For example, also can from the whole constitutive requirements shown in the embodiment, omit several constitutive requirements.And then, also can make the suitable combination of constitutive requirements of different embodiments.
Claims (7)
1. elevator control device, its driving by three-phase alternating current motor (1) makes car (2) carry out lifting work, it is characterized in that possessing:
2/3 convs (12), it supplied with the voltage that the electric current be used to make phase shortage confirm usefulness flows mutually to each of described three-phase alternating current motor before the beginning of travelling of described car;
Phase shortage anomaly detector (23), it is accompanied by the voltage supply work of being undertaken by described 2/3 convs, and based on the magnitude of voltage of each phase of described three-phase alternating current motor, the phase shortage that detects described three-phase alternating current motor is unusual; And
Ride control portion (30), it is being detected under the unusual situation of phase shortage by described phase shortage anomaly detector, forbids that immediately travelling of described car start working.
2. elevator control device according to claim 1 is characterized in that:
Described phase shortage anomaly detector (23) is checked the magnitude of voltage by each phase of voltage detection unit detection, and surpasses under the situation of predefined a reference value at the magnitude of voltage of at least 1 phase, is judged to be described three-phase alternating current motor phase shortage has taken place.
3. elevator control device according to claim 1 and 2 is characterized in that:
Described phase shortage anomaly detector (23) after the voltage supply work of being undertaken by described 2/3 convs begins to have passed through certain hour, is checked the magnitude of voltage of each phase that is detected by voltage detection unit.
4. elevator control device according to claim 1 is characterized in that:
Described three-phase alternating current motor is an induction motor (IM).
5. elevator control device according to claim 1 is characterized in that:
Confirming the electric current of usefulness in each phase shortage that flows on mutually of described three-phase alternating current motor along with the supply of the voltage that is undertaken by described 2/3 convs, is to be used to make the rotative speed of described three-phase alternating current motor to follow the orthogonal axes electric current of the torque current of target velocity.
6. elevator control device according to claim 1 is characterized in that:
Described three-phase alternating current motor is the synchronous motor that possesses permanent magnet.
7. elevator control device according to claim 6 is characterized in that also possessing:
Low-pass filter (15);
Wherein, postpone by described low-pass filter, suppress to result from the torque of described permanent magnet by the phase place that makes the electric current of confirming in each phase shortage that flows on mutually of described three-phase alternating current motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2009200971A JP5473491B2 (en) | 2009-08-31 | 2009-08-31 | Elevator control device |
| JP200971/2009 | 2009-08-31 |
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| CN102001561A true CN102001561A (en) | 2011-04-06 |
| CN102001561B CN102001561B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010260130.0A Active CN102001561B (en) | 2009-08-31 | 2010-08-20 | Elevator control device |
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| JP (1) | JP5473491B2 (en) |
| CN (1) | CN102001561B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104081656A (en) * | 2012-03-23 | 2014-10-01 | 株式会社日立产机系统 | Power conversion device |
| CN110138310A (en) * | 2018-02-08 | 2019-08-16 | 松下知识产权经营株式会社 | Control device of electric motor, pile defection device and method for detecting open phase |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5314103B2 (en) * | 2011-09-30 | 2013-10-16 | 東芝シュネデール・インバータ株式会社 | Permanent magnet synchronous motor drive device |
| CN103482441A (en) * | 2013-09-10 | 2014-01-01 | 天津豪雅科技发展有限公司 | Novel elevator power supply control device |
| US10280038B2 (en) * | 2015-01-13 | 2019-05-07 | Mitsubishi Electric Corporation | Elevator control device |
| JP6610427B2 (en) * | 2016-05-20 | 2019-11-27 | スズキ株式会社 | Motor control device |
| CN107248724B (en) * | 2016-07-22 | 2018-11-13 | 奥克斯空调股份有限公司 | Power phase shortage detection method when a kind of compressor of air conditioner operation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5150148A (en) * | 1974-10-28 | 1976-05-01 | Hitachi Ltd | Erebeetano ketsusokenshutsusochi |
| JPH0952673A (en) * | 1995-08-11 | 1997-02-25 | Toshiba Corp | Current-carrying testing device for power converting device, device and method for testing current-currying of power converting device for elevator control device |
| JP2001037242A (en) * | 1999-07-22 | 2001-02-09 | Toshiba Corp | Overcurrent protective device for inverter |
| JP2001292580A (en) * | 2000-04-07 | 2001-10-19 | Yaskawa Electric Corp | Method and apparatus for detecting missing phase of output and inverter |
| JP2005041672A (en) * | 2003-07-25 | 2005-02-17 | Mitsubishi Electric Corp | Device and method for controlling elevator |
| CN1673062A (en) * | 2005-03-24 | 2005-09-28 | 陕西亿丰电子工程有限公司 | Lift running safety recall estimating system |
| JP2007049801A (en) * | 2005-08-09 | 2007-02-22 | Nachi Fujikoshi Corp | Inverter device for motor drive |
| CN101420113A (en) * | 2008-11-26 | 2009-04-29 | 朱鸽 | Three phase electric power protector having counting and timing function |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4232618B2 (en) * | 2003-12-02 | 2009-03-04 | 株式会社日立製作所 | Elevator control device and elevator system |
| JP2005289532A (en) * | 2004-03-31 | 2005-10-20 | Mitsubishi Electric Corp | Elevator control device |
| JP4607215B2 (en) * | 2008-09-22 | 2011-01-05 | 東芝エレベータ株式会社 | Elevator control device |
-
2009
- 2009-08-31 JP JP2009200971A patent/JP5473491B2/en active Active
-
2010
- 2010-08-20 CN CN201010260130.0A patent/CN102001561B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5150148A (en) * | 1974-10-28 | 1976-05-01 | Hitachi Ltd | Erebeetano ketsusokenshutsusochi |
| JPH0952673A (en) * | 1995-08-11 | 1997-02-25 | Toshiba Corp | Current-carrying testing device for power converting device, device and method for testing current-currying of power converting device for elevator control device |
| JP2001037242A (en) * | 1999-07-22 | 2001-02-09 | Toshiba Corp | Overcurrent protective device for inverter |
| JP2001292580A (en) * | 2000-04-07 | 2001-10-19 | Yaskawa Electric Corp | Method and apparatus for detecting missing phase of output and inverter |
| JP2005041672A (en) * | 2003-07-25 | 2005-02-17 | Mitsubishi Electric Corp | Device and method for controlling elevator |
| CN1673062A (en) * | 2005-03-24 | 2005-09-28 | 陕西亿丰电子工程有限公司 | Lift running safety recall estimating system |
| JP2007049801A (en) * | 2005-08-09 | 2007-02-22 | Nachi Fujikoshi Corp | Inverter device for motor drive |
| CN101420113A (en) * | 2008-11-26 | 2009-04-29 | 朱鸽 | Three phase electric power protector having counting and timing function |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104081656A (en) * | 2012-03-23 | 2014-10-01 | 株式会社日立产机系统 | Power conversion device |
| CN104081656B (en) * | 2012-03-23 | 2017-04-05 | 株式会社日立产机系统 | Power inverter |
| CN110138310A (en) * | 2018-02-08 | 2019-08-16 | 松下知识产权经营株式会社 | Control device of electric motor, pile defection device and method for detecting open phase |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5473491B2 (en) | 2014-04-16 |
| JP2011051695A (en) | 2011-03-17 |
| CN102001561B (en) | 2014-04-02 |
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