CN1356255A - Controller for elevator - Google Patents
Controller for elevator Download PDFInfo
- Publication number
- CN1356255A CN1356255A CN 00137273 CN00137273A CN1356255A CN 1356255 A CN1356255 A CN 1356255A CN 00137273 CN00137273 CN 00137273 CN 00137273 A CN00137273 A CN 00137273A CN 1356255 A CN1356255 A CN 1356255A
- Authority
- CN
- China
- Prior art keywords
- voltage
- current
- power line
- mentioned
- line voltage
- 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.)
- Pending
Links
Images
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
A controller for elevator is composed of voltage controller for controlling the DC voltage of current converter, current controller for controlling active current, power voltage and common-mode current, transformer for stepping down power voltage and detecting power phase, coordinate converter for calculating the active value of power supply, reactive current instruction generator, reactive current controller, and operating unit for generating DC voltage to control the converter unit to generate needed voltage. Its advantage includes improved current control mode.
Description
What the present invention relates to be used for elevator converts alternating current to galvanic control setup, more specifically, relate to and be used for elevator control device, wherein any fluctuation of power input voltage all obtains pulsation-free control, and can use a high performance converters, and the voltage transformer that does not need to add comes and local power supply specification coupling.
Fig. 1 is the diagram of block that is used for the power supply change-over device circuit of conventional elevator, and as shown in the figure, it comprises a reactor (L), is used to carry out filtering and to exporting from the three-phase electricity of driving apical grafting tentaculum (MCCB); One voltage transformer, be used for to power line voltage (PT1) with from above-mentioned open apical grafting tentaculum (MCCB) 3 mutually the electricity each detect mutually; One PWM commutator assemble (1) opens or closes a switching device and alternating current is converted to through overcommutation and the direct current (DC) supplied with by above-mentioned reactor (L) according to a gate drive signal; First drive element (2) is supplied with a gate drive signal to the switching device of these PWM conv (1) parts; One smooth condenser (C) carries out filtering to the output voltage from said PWM commutator assemble (1); One current converter parts (3), the vdc that will supply to above-mentioned smooth condenser (C) two ends converts a variable voltage (VV) and to and has 3 cross streams voltages of variable frequency (VF) and supply to the motor (M) that electric energy is provided to a railway carriage (5); One speed detector (4) detects the spin velocity of above-mentioned motor (M); One detectors of load (6) detects the load on the above-mentioned railway carriage (5); One current probe (8) detects the electric current that flows into said PWM commutator assemble (1); One piezoelectric detector (9) detects the vdc at above-mentioned smooth condenser (C) two ends; Second drive element (10) opens or closes the switching device of above-mentioned current converter parts (3); And a function unit (11), on the basis of the output signal of above-mentioned detector (4,8,9), the operation of this PWM commutator assemble (1) and above-mentioned current converter parts (3) is controlled, thereby above-mentioned motor (M) can be rotated with its target velocity.
As shown in Figure 5, the circuit of the above-mentioned function unit of making by lg electronics (LGE) (11), comprise a voltage-operated device (51), calculate and export the current control value of a meritorious circuit component, thereby motor speed can be changed according to the difference between the virtual voltage of voltage control that is set by the user and motor; One current control device (52) outputs to this control setup with a voltage controling value, thereby the current control value of above-mentioned voltage-operated device (51) can be complementary with the electric current that is detected by a reactor (54); One reactive component of current control setup (53) outputs to this control setup with a reactive power value, is received thereby make an idle automatically controlled value can be used as 0 input, and is complementary with the electric current of locating to detect at a reactor (55); Current probe (56), (57) will convert current value to from the voltage output of above-mentioned reactor (54) (55), and this current value feeds back to input end as input; And an arithmetic unit (58), will deliver to an adder, a calculator and 1 phase converter mutually/2 with the current control value from the electric current of above-mentioned reactor (54), (55), thereby current converter parts will be controlled.
On the other hand, as shown in Figure 6, the circuit of the above-mentioned function unit of producing by Mitsubishi (11), comprise a voltage-operated device (61), calculate and export the current control value of a meritorious circuit component, thereby motor speed can be changed according to the difference between the virtual voltage of voltage control that is set by the user and motor; One current control device (62) outputs to this control setup with a voltage controling value, thereby the current control value of above-mentioned voltage-operated device (61) can be complementary with the electric current that is detected by reactor (69); One is used for the set parts of common-mode voltage clipper (63), and setting one and power line voltage input have the common-mode voltage of model identical; One common-mode voltage control setup (64), electric current is controlled, thereby make it be the common-mode voltage set of a common-mode voltage clipper (63) by above-mentioned set parts with the basis of the difference of the above-mentioned voltage controling value of current control device (62) on, with respect to the power line voltage axle have 90 spend differ; One common mode current control device (65) outputs to this control setup with a voltage controling value, thereby the outgoing current from above-mentioned common-mode voltage device (64) can be complementary with actual current; And an arithmetic unit (70), will deliver to an adder, a calculator and a three-phase/two phase converter from the electric current and the current control value of reactor (69), thereby current converter parts will be controlled.
When three plase alternating current is provided, drives apical grafting tentaculum (MCCB) and open.Thereby above-mentioned 3 cross streams electricity is driven apical grafting tentaculum (MCCB) through this, and carries out filtering by reactor (L) before supplying to a PWM function unit (1).
When an output pulse when a function unit (11) outputs to this first drive element (11), switching device to this PWM function unit (1) is controlled, make from 3 cross streams electricity of reactor (L) input and convert a direct current (DC) to, supply to a smooth condenser (C) then.
Then above-mentioned smooth condenser (C) is added vdc, filtering again, and supply to current converter parts (3).Next, above-mentioned current converter (3) converts thereof into voltage and 3 cross streams frequency, and supply to a motor (M), thus control torque and rotation, wherein switching device is by being opened or closed by the gate drive signal of second drive element (10) of a function unit (11) control.
Therefore, above-mentioned motor (M) begins rotation, and moves up and down a railway carriage (5), thereby the passenger is transported to required floor.
When this railway carriage (5) was mobile by above-mentioned motor (M), a detectors of load (6) detected the passenger weight on the railway carriage (5), and it is outputed to a function unit (11).One piezoelectric detector (4) detects the spin velocity of motor (M) and it is outputed to above-mentioned function unit (11).
In addition, the voltage transformer (PT1) that is used to detect power line voltage detects mutually to the 3 cross streams electricity that are input to PWM commutator assemble (1), and it is outputed to above-mentioned function unit (11).One current probe (8) detects the electric current of PWM commutator assemble (1), and it is outputed to above-mentioned function unit (11).
Therefore, above-mentioned function unit (11) is controlled PWM commutator assemble (1) and current converter parts (3) on the basis of the output that detects from each detector.
The input voltage of a current transfer device as shown in Figure 1 changes in a certain scope with its voltage rating.In addition, magnitude of voltage fluctuates in time.
If its received current significantly fluctuates, it is unstable that current control just becomes.If the current control instability just can not be controlled the voltage that links with a dc terminal.
Below the function unit of being produced by LG that is used to address the above problem is described.
When a motor (M) starting one elevator, produce a predefined voltage instruction.
When this voltage instruction supplies to voltage-operated device (51), and the deviation of itself and virtual voltage first adder (A1) locate detected after, the current-order (iqe) of above-mentioned voltage-operated device (51) generation one and the cooresponding meritorious circuit component of this deviation, and, motor (M) can be driven with its change of current terminal (+) that supplies to second adder (A2).
Next, second adder (A2) receives actual current input, this electric current input is detected by its change of current terminal (-) by a reactor (54), the current-order (iqe) of one meritorious circuit component and the deviation between the actual current are calculated, and it is outputed to a current control device (52).
Next, above-mentioned current control device (52) will output to the change of current terminal (+) of the 3rd adder (A3) with the cooresponding voltage instruction value of deviation that is calculated by above-mentioned second adder (A2).
Under the situation of high capacitance, the current-order (ide) of meritorious circuit component is set at 0, and it is outputed to the non-change of current terminal of the 4th adder (A4), thereby can the commutation rate be set at an appropriate value by control electric current input with switching device.
Then, after on the basis of the actual current that is detected and be input to a change of current terminal by a current probe (57) deviation of the electric current that detected by a reactor (54) being calculated, above-mentioned the 4th adder (A4) will be by the detected current supply of this reactor (54) to a reactive component of current control setup (53).
Therefore, above-mentioned reactive component of current control setup (53) will supply to the non-change of current terminal of slender acanthopanax musical instruments used in a Buddhist or Taoist mass (A5) with the cooresponding voltage of deviation that is calculated by above-mentioned the 4th adder (A4).
In addition, above-mentioned slender acanthopanax musical instruments used in a Buddhist or Taoist mass (A5) calculates and exports to the output voltage of above-mentioned reactive component of current control setup (53) with corresponding to the difference between the voltage of reactor (54) actual current.
Then, first adder (M1) supplies to the 6th adder (A6) with voltage (Vde), this voltage (Vde) with have model identical by the power line voltage that real electrical machinery voltage is doubled to obtain, this real electrical machinery voltage carries out rectification by the reactor (54) that has meritorious circuit component.Second multiplier (M2) outputs to the 6th adder (A6) with voltage (Vde), this voltage (Vde) has differing of 90 degree with respect to power line voltage, this power line voltage is by doubling to obtain to real electrical machinery voltage, and this real electrical machinery voltage carries out rectification by the reactor that has the quadrature network element (55).
Therefore, the 6th adder (A6) converts three phasevoltage to two-phase voltage, this three phasevoltage be a meritorious circuit component and a quadrature network element and, and will output to a PWM conv (1), thereby the electric current of reactor can be controlled through the vdc of a divider (D1) and an adder (A7) calculation process.
Here, voltage (Vde), (Vqe) from current control device (52) and reactive component of current control setup (53) output can represent according to following equation:
Eqe: supply voltage value, Vqe: with the element voltage of power line voltage common mode, Vde: the voltage that phase quadrature is arranged with respect to power line voltage, Iqe: with the element current of power line voltage common mode, Ide: the electric current of phase quadrature, R: X-bridge, L: reactance inductance are arranged with respect to power line voltage.
In aforesaid operations, as shown in Figure 2, wherein the value of power line voltage is a rated voltage, and its reactive component of current is zero (ide=0).In addition, have only the electric current consistent just to allow to flow, thereby can be complete operation under 1 the situation in the commutation rate with the power line voltage vector.
On the other hand, according to Fig. 6 the control operation that Mitsubishi implements is described below.
When motor (M) starting elevator, produce a predefined voltage instruction.
This action need obtains the voltage (Vde) that has model identical with power line voltage, by first adder (A1), voltage-operated device (61), current control device (62), reactor (69) and with first multiplier (M1) identical shown in Fig. 5 this voltage instruction is supplied to the 6th adder (A6).
Here, the set parts that is used for common-mode voltage clipper (63) has been set the common-mode voltage that has model identical with the power line voltage input, and it is supplied to the commutation terminal (-) of the 8th adder (A8).
Then the 8th adder (A8) to the voltage instruction value that is input to its non-commutation terminal (+) and and be transported to the deviation that power line voltage in the commutation terminal (-) has between the voltage of model identical as input and calculate, and be transported to common-mode voltage control setup (64).
In addition, if voltage instruction value has surpassed common-mode voltage, above-mentioned common-mode voltage control setup (64) carries out control operation, thereby makes it have the vector current (the d axle among Fig. 3) that phase quadrature is arranged with respect to power line voltage axle (the q axle among Fig. 3).
In other words, reactive component of current (i
De) be set at a nonzero value, to control.
In this case, from PWM commutator assemble (1) output voltage vector (V).Therefore, set a voltage like this, promptly commutator assemble must be in circular arc or bottom output (can obtain maximum voltage output on commutator assemble).This is convenient to current control.
When the current value of control in above-mentioned common-mode voltage control setup (64) was output, the 9th adder (A9) was calculated the deviation with respect to voltage instruction value, and it is outputed to above-mentioned common mode current control setup (65).Above-mentioned then common mode current control setup (65) outputs to the tenth adder (A10) with a voltage instruction value and controls, thereby the current value with common-mode voltage becomes with a current instruction value and equates.
Then, the deviation between above-mentioned voltage instruction value and the virtual voltage is calculated, and sent as an output by reactor (69).
First multiplier (M1) supplies to the 6th adder (A6) with voltage (Vde) then, this voltage (Vde) with have common pattern by the power line voltage that real electrical machinery voltage is doubled to obtain, this virtual voltage carries out rectification by the reactor (69) that has a meritorious circuit component.Second multiplier (M2) will supply to above-mentioned the 6th adder (A6) with respect to the voltage (Vde) that has phase quadrature by the power line voltage that real electrical machinery voltage is doubled to obtain, and this real electrical machinery voltage carries out rectification by the reactor (68) that has a reactive component of current element.
Therefore, the 6th adder (A6) converts three phasevoltage to a two-phase voltage, this three phasevoltage be a meritorious circuit component and a quadrature network element and, to supply to a PWM conv (1) by the vdc of a divider (D1) and an adder (A7) calculation process then, thereby can control the electric current of reactor.
But in the circuit that LG uses based on above-mentioned routine techniques, the voltage of a DC-link end is set and is controlled in high value, thereby can have sufficiently high voltage to export from commutator assemble.This has eliminated the potential problem when power line voltage increases.On the other hand,, need high voltage semiconductor device and cond, cause cost higher because voltage is set highly.In addition, also connected commutator assemble, the dV/dt that is added to the square-wave voltage on the motor is increased.Thereby motor is vulnerable to wearing and tearing and the damage problem is arranged.In the circuit that Mitsubishi uses, must reach its setting value with the voltage of power line voltage common mode, thereby behind elevator starter, produce a referenced reactive current, and its commutator assemble begins to connect.Therefore, initial control becomes unstable, reaches a certain value up to added reactive component of current.In addition, the operation of common-mode voltage control setup becomes to transshipping sensitivity.In addition, if virtual voltage does not increase, also there is the problem of the unnecessary operation of depending on the current control device performance.
Therefore,, the purpose of this invention is to provide a kind of elevator control device that is used for, any fluctuation of power line voltage input can both be handled with high flexibility in order to solve the problem of above-mentioned existence.
Another object of the present invention provides a kind of elevator control device that is used for, and the voltage transformer that does not need to add just can be finished high performance operation.Another purpose of the present invention provides a kind of elevator control device that is used for, no matter in the power line voltage input any fluctuation is arranged, does not need high voltage semiconductor device and cond, thereby cost is reduced.
To achieve these goals, the present invention proposes a kind of control setup, this control setup comprises: voltage-operated device, be used to produce the current value of a meritorious element, thereby change motor speed according to the function of deviation between the virtual voltage of the voltage instruction that produces when the elevator starter and its motor; Current control device is used to produce an active voltage and controls the output of above-mentioned voltage-operated device, power line voltage and common mode current thereof; Be used to detect the voltage transformer of power line voltage, be used for converting power line voltage to a lower voltage, with to detecting mutually from the input voltage of power supply; The coordinate conv is used for the output voltage of the voltage transformer that detects above-mentioned power line voltage is detected, thereby the effective value of power line voltage is calculated; The referenced reactive current producer is used to utilize the bearing capacity of elevator railway carriage and the output valve of above-mentioned coordinate conv to produce a referenced reactive current value; The reactive component of current control setup is used to produce a reactive component of voltage command value, the referenced reactive current value of being sent by above-mentioned referenced reactive current producer is become with actual current equate; And arithmetic unit, be used for according to the reactive component of voltage command value of above-mentioned reactive component of current control setup and the active voltage command value of above-mentioned current control device, produce a direct current voltage to control a commutator assemble by an adder, a calculator and a three-phase/two phase converter.
Fig. 1 is the circuit block diagram that is used for the electrical switching device of conventional elevator.
Fig. 2 is the vectogram that is controlled in the voltage and current of commutation rate when being 1 when circuit among Fig. 1.
Fig. 3 is when power line voltage raises, the vectogram of the voltage and current of circuit among Fig. 1.
Fig. 4 is when idle electric Be Controlled, the vectogram of the voltage and current of circuit among Fig. 1.
Fig. 5 is the detailed view of the function unit made by LGE among Fig. 1.
Fig. 6 is the detailed view of the function unit made by Mitsubishi among Fig. 1.
Fig. 7 is the diagram of block that is used for elevator control device among the present invention.
Fig. 8 is a characteristic pattern, the voltage vector phase of power line voltage in the presentation graphs 7.
Fig. 9 is a characteristic pattern, the coordinate of power line voltage conversion output in the presentation graphs 7.
Figure 10 is when elevator is driven, the mode chart of received current and control voltage among Fig. 7.
The nomenclature of critical component in the accompanying drawing:
71: voltage-operated device
72: current control device
73: the coordinate conv
74: the wattless component current command generator
75: the reactive component of current control setup
PT: the voltage transformer that is used to detect power line voltage
Fig. 7 is the circuit block diagram that the present invention is used for elevator control device, as shown in the figure, this control setup comprises: voltage-operated device (71), this voltage-operated device (71) produces the current value of a meritorious circuit component, and the function of deviation changes motor speed between the voltage instruction that produces with according to elevator starter time the and the virtual voltage of its motor; Current control device (72), this current control device (72) produce an active voltage and come output, power line voltage and the common mode current thereof of above-mentioned voltage-operated device (71) are controlled; Be used to detect the voltage transformer (PT) of power line voltage, this voltage transformer (PT) converts power line voltage to a lower voltage, to detect the phase from the input voltage of power supply; Coordinate conv (73), this coordinate voltage transformer (73) detect from the voltage of voltage transformer (PT) output that detects above-mentioned power line voltage, to calculate the effective value of power line voltage; Referenced reactive current producer (74), this referenced reactive current producer utilize the output valve of the bearing capacity of elevator railway carriage and above-mentioned coordinate conv (73) to produce a referenced reactive current value; Reactive component of current control setup (75) produces a reactive component of voltage command value, the referenced reactive current value of being sent by above-mentioned reactive component of voltage command generator (74) is become with actual current equate; And arithmetic unit (78), this arithmetic unit produces vdc to control a commutator assemble by an adder, a calculator and a three-phase/two phase converter according to the reactive component of voltage command value of above-mentioned reactive component of current control setup (75) and the active voltage command value of above-mentioned current control device (72).
Below operation of the present invention and the effect with said structure is described.
As shown in Figure 8, when three-phase mains voltage is received as input, be used to detect voltage transformer (PT) the detecting mutually of power line voltage to power line voltage.
The power line voltage that is detected by the above-mentioned voltage transformer (PT) that is used to detect power line voltage is fed into coordinate conv (73) mutually then.Above-mentioned coordinate conv (73) converts its coordinate to a rotary seat mark system on the basis of the phase of the power line voltage that is detected, reflux thereby control.Next, the coordinate of conversion supplies to wattless component current command generator (74).
Fig. 9 illustrates its coordinate by the output of above-mentioned coordinate conv (73) conversion.
As mentioned above, when coordinate conv (73) is supplied with its coordinate and has been transformed into the output of wattless component current command generator (74), one detectors of load (6) detects the load of elevator railway carriage before elevator starter, and it is supplied to above-mentioned wattless component circuit command generator (74).
Above-mentioned then wattless component circuit command generator (74) produces the current-order that is used for the d axle on the basis of railway carriage load and the switched power line voltage of its coordinate.
The value of power line voltage and load is big more, and it is just high more to produce the d shaft element current-order that is used to operate.
In addition, if the power line voltage that is detected is no more than the range of nominal tension, above-mentioned wattless component current command generator (74) just can not produce a current-order that is used for the d shaft element.If voltage increases slightly or load is less, just do not produce the current-order that is used for the d shaft element.
Here, if the operation of a DC-link end is checked, predefined voltage instruction in the time of will being created in elevator starter.
When after in first adder (A71), voltage instruction being calculated with respect to the deviation of the virtual voltage that detects, voltage instruction being supplied to voltage-operated device (71), above-mentioned voltage-operated device (71) produces the current-order (iqe) of the corresponding meritorious circuit component of locating with the commutation terminal (+) of second adder (A72) of deviation, thus but drive motor (M).
Second adder (A72) receives actual current according to the input of locating to detect at its terminal (-) that commutates by a reactor then, and the deviation between the current-order (iqe) of actual current and meritorious circuit component calculated, supply to current control device (72).
Next, current control device (72) becomes with actual current the current-order of meritorious circuit component to equate.When meritorious circuit component electric current (iqe) being carried out calculation process and send as shown in Figure 10 (B),,, carry out calculation process and supply to current control device (72) with the driving of elevator as A to a meritorious circuit component electric current as output.On the other hand, if power line voltage increases,,, carry out calculation process as B to a meritorious circuit component electric current.Therefore, should be noted that higher power line voltage produces lower electric current.
In addition, shown in Figure 10 (B), meritorious element current command generator (74) carries out arithmetic operation to quadrature network element current (ide) on the basis of railway carriage load and the switched power line voltage of its coordinate, and it is sent as output.Load is very big if power line voltage rises very high, to a quadrature network element current, as C, carries out calculation process, and supplies to an idle control setup (75).On the other hand, load is very little if power line voltage rises very high, to a quadrature network element current, as D, carries out calculation process.
Therefore, (A74) receive meritorious circuit component electric current (iqe) and quadrature network element current (ide) and after they are calculated with respect to the deviation of actual current, supply to current control device (72) and reactive component of current control setup (75) from the second and the 4th adder (A72) respectively.
Above-mentioned then current control device (72) output control voltage, thus meritorious circuit component electric current (iqe) becomes with actual current and equates.On the other hand, reactive component of current control setup (75) output one control voltage, thus quadrature network element current (ide) becomes with actual current and equates.
Then, shown in Figure 10 (C), arithmetic unit (78) carries out arithmetic operation and exports a voltage, and the commutation rate is controlled at (1).
Because this voltage just can be stablized control less than obtainable maximum voltage output in the commutator assemble.
Describe in detail as top, the present invention can detect power line voltage and load simultaneously.In addition, power line voltage and railway carriage load are high more, and the current-order mutually different with power line voltage of generation is just big more, and be bigger thereby reactive component of current can become.If supply voltage value changes in a certain scope, can produce the required voltage that is up to a certain limit, and not need other voltage transformer.Therefore, effect of the present invention is that it has improved the performance of current control, and does not need high voltage semiconductor device and cond, thereby cost is reduced.
Claims (3)
1. be used for elevator control device, comprise: voltage-operated device is used to produce the current value of a meritorious circuit component, thereby changes motor speed according to the function of deviation between the virtual voltage of the voltage instruction that produces when the elevator starter and its motor; Current control device is used to produce an active voltage and controls the output of above-mentioned voltage-operated device, power line voltage and common mode current thereof; Be used to detect the voltage transformer of power line voltage, be used for converting power line voltage to a lower voltage, with to detecting mutually from the input voltage of power supply; The coordinate conv is used for the output voltage of the voltage transformer that detects above-mentioned power line voltage is detected, thereby the effective value of power line voltage is calculated; The referenced reactive current producer is used to utilize the bearing capacity of elevator railway carriage and the output valve of above-mentioned coordinate conv to produce a referenced reactive current value; The reactive component of current control setup is used to produce a reactive component of voltage command value, the referenced reactive current value of being sent by above-mentioned referenced reactive current producer is become with actual current equate; And arithmetic unit, be used for according to the reactive component of voltage command value of above-mentioned reactive component of current control setup and the active voltage command value of above-mentioned current control device, produce a direct current voltage to control a commutator assemble by an adder, a calculator and a three-phase/two phase converter.
2. the elevator control device that is used for as claimed in claim 1 is characterized in that power line voltage is high more, and railway carriage load is heavy more, and then the current-order of Chan Shenging is big more, mutually different with power line voltage of this current-order in a wattless component current command generator.
3. the elevator control device that is used for as claimed in claim 1 is characterized in that its coordinate conv carries out the conversion to a rotary seat mark system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00137273 CN1356255A (en) | 2000-12-04 | 2000-12-04 | Controller for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00137273 CN1356255A (en) | 2000-12-04 | 2000-12-04 | Controller for elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1356255A true CN1356255A (en) | 2002-07-03 |
Family
ID=4597725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00137273 Pending CN1356255A (en) | 2000-12-04 | 2000-12-04 | Controller for elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1356255A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401631C (en) * | 2002-09-23 | 2008-07-09 | 西门子能量及自动化公司 | System and method for automatic current limit control |
| CN102130603A (en) * | 2010-01-14 | 2011-07-20 | 西门子公司 | Converter device and method for converting electrical power |
| CN101517879B (en) * | 2006-09-04 | 2012-01-11 | 弗罗纽斯国际有限公司 | Method for control of inverters |
| CN103562108A (en) * | 2011-05-27 | 2014-02-05 | 三菱电机株式会社 | Control device for elevator |
| CN106335828A (en) * | 2016-08-30 | 2017-01-18 | 海安县能达电气有限公司 | Elevator without counterweight and specific transformer thereof |
| CN107777524A (en) * | 2016-08-30 | 2018-03-09 | 南通润雅机电科技有限公司 | A kind of non-counterweight elevator |
-
2000
- 2000-12-04 CN CN 00137273 patent/CN1356255A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401631C (en) * | 2002-09-23 | 2008-07-09 | 西门子能量及自动化公司 | System and method for automatic current limit control |
| CN101517879B (en) * | 2006-09-04 | 2012-01-11 | 弗罗纽斯国际有限公司 | Method for control of inverters |
| CN102130603A (en) * | 2010-01-14 | 2011-07-20 | 西门子公司 | Converter device and method for converting electrical power |
| CN103562108A (en) * | 2011-05-27 | 2014-02-05 | 三菱电机株式会社 | Control device for elevator |
| CN103562108B (en) * | 2011-05-27 | 2015-12-16 | 三菱电机株式会社 | Elevator control gear |
| CN106335828A (en) * | 2016-08-30 | 2017-01-18 | 海安县能达电气有限公司 | Elevator without counterweight and specific transformer thereof |
| CN107777524A (en) * | 2016-08-30 | 2018-03-09 | 南通润雅机电科技有限公司 | A kind of non-counterweight elevator |
| CN106335828B (en) * | 2016-08-30 | 2018-11-16 | 海安县能达电气有限公司 | A kind of non-counterweight elevator and its dedicated transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1311620C (en) | Method and device for controlling inductive motor regenerated energy flow and DC bus voltage in frequency modulation driving system | |
| KR100396801B1 (en) | Elevator control apparatus | |
| CN101557194B (en) | Motor driving apparatus | |
| CN1286264C (en) | Frequency converter and drive for electric motor | |
| CN102077460A (en) | Pm motor driving power unit | |
| CN111628660B (en) | Compressor variable frequency speed regulating system and control method of direct current bus voltage | |
| CN1049253A (en) | Voltage-type pulse-width modulation interchange/inverter system and control procedure thereof | |
| JP5755930B2 (en) | Unit cell and AC / DC converter using the same | |
| CN105703689A (en) | High-power brushless doubly-fed machine three-level bidirectional variable-frequency speed regulation system | |
| CN1066754A (en) | Inverter and AC motor drive system | |
| CN106849824A (en) | Vidacare corp, electric drive system and electrical equipment | |
| CN1169618A (en) | Voltage type inverter and control method thereof | |
| EP1962414A1 (en) | Power converting apparatus | |
| CN1356255A (en) | Controller for elevator | |
| CN204376731U (en) | A kind of four-quadrant frequency converter | |
| JP2019088175A (en) | Motor controller, power conversion equipment, auxiliary power supply, and auxiliary power supply control method | |
| CN1201476C (en) | Driving gear and driving method of a.c motor | |
| Kalla et al. | Analysis of Canonical Switching Inverse Buck-Boost Converter Based Electric Vehicle Drive System | |
| CN113965139A (en) | Thyristor and IGBT mixed three-phase motor two-phase frequency conversion control circuit and method thereof | |
| Jafari et al. | A new hybrid three-phase multilevel inverter devoted to electric drive with constant volt per hertz control | |
| Xiao et al. | Design of line/motor side capacitors for PWM CSR-CSI drives to achieve optimal power factor in high power fan/pump applications | |
| CN1647358A (en) | Method and device for the regulation of a permanent-magnet excited synchronous machine having reduced power oscillations in the higher rotational speed range | |
| CN86102104A (en) | The control setup of alternating-current electrical lift | |
| Pena et al. | Control strategy of an indirect matrix converter with modifying DC voltage | |
| CN212543681U (en) | Independent double-bridge arm variable frequency soft starter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |