WO2021088229A1 - Star-connection circuit design method for elevator permanent magnet synchronous traction motor - Google Patents

Star-connection circuit design method for elevator permanent magnet synchronous traction motor Download PDF

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WO2021088229A1
WO2021088229A1 PCT/CN2019/128291 CN2019128291W WO2021088229A1 WO 2021088229 A1 WO2021088229 A1 WO 2021088229A1 CN 2019128291 W CN2019128291 W CN 2019128291W WO 2021088229 A1 WO2021088229 A1 WO 2021088229A1
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permanent magnet
magnet synchronous
speed
star
synchronous traction
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PCT/CN2019/128291
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French (fr)
Chinese (zh)
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贺剑
何栋林
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迅达（中国）电梯有限公司
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Publication of WO2021088229A1 publication Critical patent/WO2021088229A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
    • H02P3/22—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by short-circuit or resistive braking

Definitions

  • the invention relates to a method for designing a star sealing circuit of an elevator permanent magnet synchronous traction machine.
  • the purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.
  • a method for designing a star sealing circuit of an elevator permanent magnet synchronous traction machine includes a star sealing contactor and lead wires connected in series to the three-phase windings of the permanent magnet synchronous traction machine. Series resistance on the The method for designing the star-sealing circuit of the elevator permanent magnet synchronous traction machine includes the following steps:
  • S200 Calculate the braking torque T required by the elevator, and make a constant torque line equal to the braking torque T required by the elevator on the multiple torque-speed curves, and these torque lines are related to each torque-speed curve There are two intersections, left and right, the speed corresponding to the left intersection is the lowest braking speed V0 of the permanent magnet synchronous traction machine, and the speed corresponding to the right intersection is the highest braking speed of the permanent magnet synchronous traction machine V1;
  • the method for designing the star sealing circuit of the elevator permanent magnet synchronous traction machine further includes the following steps:
  • S400 Obtain multiple impulse current peak-speed curves corresponding to different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine is short-circuited and braked through the star-sealing circuit;
  • S500 Select an impulse current peak-speed curve corresponding to the resistance value R2 of the series resistance of the set sealing circuit, and determine the maximum operating speed allowed by the elevator according to the selected impulse current peak-speed curve The highest impulse current C corresponding to V;
  • S600 Select the specifications of the sealed star contactor according to the determined highest impulse current C, so that the selected sealed star contactor can withstand the determined highest impulse current C.
  • step S100 computer simulation is used to calculate the difference in series resistance value of the permanent magnet synchronous traction machine when the permanent magnet synchronous traction machine is short-circuited and braked by the sealing circuit.
  • R1, R2, R3, R4, R5 respectively correspond to multiple torque-speed curves.
  • the actual measurement method is used to plot the relationship between the permanent magnet synchronous traction machine and the different series resistance value when the permanent magnet synchronous traction machine is short-circuited and braked by the sealing circuit.
  • R1, R2, R3, R4, R5 respectively correspond to multiple torque-speed curves.
  • step S400 computer simulation is used to calculate the difference in series resistance value of the permanent magnet synchronous traction machine when the permanent magnet synchronous traction machine is short-circuited and braked by the sealing circuit.
  • R1, R2, R3, R4, R5 correspond to multiple peak-speed curves of impulse current respectively.
  • the actual measurement method is used to plot the relationship between the permanent magnet synchronous traction machine and the different series resistance value when the permanent magnet synchronous traction machine is braked by the short circuit of the sealing circuit.
  • R1, R2, R3, R4, R5 correspond to multiple peak-speed curves of impulse current respectively.
  • the selected maximum braking speed V1 of the torque-speed curve is 1.1-1.3 times the maximum operating speed V allowed by the elevator.
  • the selected maximum braking speed V1 of the torque-speed curve is 1.2 times the maximum operating speed V allowed by the elevator.
  • the maximum inrush current that the selected star-sealing contactor can withstand is 1.1 to 1.3 times the determined maximum inrush current C.
  • the maximum inrush current that the selected star-sealing contactor can withstand is 1.2 times the determined maximum inrush current C.
  • a series resistor with a suitable resistance value can be easily selected, so that the permanent magnet synchronous traction machine can reliably achieve elevator braking and improve the safety of elevator use.
  • a star-sealing contactor with appropriate specifications can also be easily selected, so that the permanent magnet synchronous traction machine can reliably achieve elevator braking and improve the safety of elevator use.
  • Figure 1 shows a schematic diagram of a star sealing circuit of an elevator permanent magnet synchronous traction machine according to an embodiment of the present invention
  • Fig. 2 shows multiple torque-speed curves corresponding to different series resistance values when the permanent magnet synchronous traction machine shown in Fig. 1 is short-circuited and braked by the star-sealing circuit;
  • Figure 3 shows the multiple peak-speed curves of impulse current corresponding to different series resistance values when the permanent magnet synchronous traction machine shown in Figure 1 is short-circuited and braked by the star-sealing circuit.
  • a method for designing a star sealing circuit of an elevator permanent magnet synchronous traction machine includes a star sealing contactor and a three-phase winding connected in series to the permanent magnet synchronous traction machine. Series resistance on the leads of the device.
  • the method for designing the star sealing circuit of the elevator permanent magnet synchronous traction machine includes the following steps: obtaining the series resistance values R1, R2, and R1 of the permanent magnet synchronous traction machine when the permanent magnet synchronous traction machine is short-circuited and braking through the star sealing circuit.
  • R3, R4, R5 respectively correspond to multiple torque-speed curves; calculate the braking torque T required by the elevator, and make a constant torque equal to the braking torque T required by the elevator on the multiple torque-speed curves There are two left and right intersections between these torque lines and each torque-speed curve.
  • the speed corresponding to the left intersection is the lowest braking speed V0 of the permanent magnet synchronous traction machine, and the speed corresponding to the right intersection is The maximum braking speed V1 of the permanent magnet synchronous traction machine; select one of the torque-speed curves whose maximum braking speed V1 is greater than the maximum allowable operating speed V of the elevator, and compare it with the selected torque-speed
  • the series resistance value R2 corresponding to the curve is set as the resistance value R2 of the series resistance of the star sealing circuit.
  • Figure 1 shows a schematic diagram of a star sealing circuit of an elevator permanent magnet synchronous traction machine according to an embodiment of the present invention
  • the star-sealing circuit of the elevator permanent magnet synchronous traction machine includes a star-sealing contactor 11 and the lead wires connected in series to the three-phase windings of the permanent magnet synchronous traction machine 20, respectively.
  • Series resistance 12 the series resistance 12.
  • the sealing star contactor 11 when the electromechanical brake braking torque of the elevator is insufficient or fails, and the weight of the elevator car side and the weight of the counterweight side are in an unbalanced state, the sealing star contactor 11 The power supply circuit between the permanent magnet synchronous traction machine 20 and the elevator inverter 30 will be cut off. After cutting off the power supply circuit between the permanent magnet synchronous traction machine 20 and the elevator inverter 30, the star-sealing contactor 11 uses series resistance 12 to connect the three-phase windings of the permanent magnet synchronous traction machine 20 in a star connection. Get up to limit the speed of the car.
  • Fig. 2 shows the multiple torque-speed curves corresponding to different series resistance values R1, R2, R3, R4, R5 when the permanent magnet synchronous traction machine shown in Fig. 1 is short-circuited and braked by the star-sealing circuit.
  • the design method of the star sealing circuit of the elevator permanent magnet synchronous traction machine 20 includes the following steps:
  • S200 Calculate the braking torque T required by the elevator, and make a constant torque line equal to the braking torque T required by the elevator on the multiple torque-speed curves, and these torque lines are related to each torque-speed curve There are two intersections, left and right, the speed corresponding to the left intersection is the lowest braking speed V0 of the permanent magnet synchronous traction machine, and the speed corresponding to the right intersection is the highest braking speed V1 of the permanent magnet synchronous traction machine;
  • S300 Select one of the torque-speed curves whose maximum braking speed V1 is greater than the maximum allowable operating speed V of the elevator, and set the series resistance value R2 corresponding to the selected torque-speed curve as the star-sealing circuit
  • the resistance value of the series resistor 12 is R2.
  • Figure 3 shows the peak-speed of multiple impulse currents corresponding to different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine 20 shown in Figure 1 is short-circuited and braked by the star-sealing circuit. curve.
  • the method for designing a star-sealing circuit of an elevator permanent magnet synchronous traction machine further includes the following steps:
  • S400 Obtain multiple impulse current peak-speed curves corresponding to different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine 20 is short-circuited and braked by the star-sealing circuit;
  • S500 Select an impulse current peak-speed curve corresponding to the resistance value R2 of the series resistance 12 of the set sealing circuit, and determine the maximum operation allowed by the elevator according to the selected impulse current peak-speed curve The highest impulse current C corresponding to speed V;
  • S600 Select the specifications of the sealed star contactor 11 according to the determined highest impulse current C, so that the selected sealed star contactor 11 can withstand the determined highest impulse current C.
  • step S100 a computer simulation can be used to calculate the performance of the permanent magnet synchronous traction machine 20 when the permanent magnet synchronous traction machine 20 is short-circuited and braked by the sealing circuit.
  • Multiple torque-speed curves corresponding to different series resistance values R1, R2, R3, R4, R5, respectively.
  • step S100 the actual measurement method can be used to plot the permanent magnet synchronous traction machine 20 when the permanent magnet synchronous traction machine 20 is short-circuited and braked by the sealing circuit Multiple torque-speed curves corresponding to different series resistance values R1, R2, R3, R4, R5 respectively.
  • step S400 computer simulation can be used to calculate the performance of the permanent magnet synchronous traction machine 20 when the permanent magnet synchronous traction machine 20 is short-circuited and braked by the sealing circuit.
  • Multiple impulse current peak-speed curves corresponding to different series resistance values R1, R2, R3, R4, R5, respectively.
  • step S400 the actual measurement method is used to plot the performance of the permanent magnet synchronous traction machine 20 when it is short-circuited and braked by the sealing circuit.
  • Multiple impulse current peak-speed curves corresponding to different series resistance values R1, R2, R3, R4, R5, respectively.
  • the maximum braking speed V1 of the selected torque-speed curve is the maximum operating speed V1 allowed by the elevator. 1.1 to 1.3 times of that.
  • the selected maximum braking speed V1 of the torque-speed curve is the maximum operating speed allowed by the elevator 1.2 times of V.
  • the maximum inrush current that the selected star-sealing contactor 11 can withstand is 1.1 of the determined maximum inrush current C ⁇ 1.3 times.
  • the maximum inrush current that the selected star-sealing contactor 11 can withstand is that of the determined maximum inrush current C 1.2 times.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

A star-connection circuit design method for an elevator permanent magnet synchronous traction motor, comprising: obtaining a plurality of torque-speed curves respectively corresponding to different series resistance values R1, R2, R3, R4 and R5 when a permanent magnet synchronous traction motor (20) is braked in a short circuit mode by means of a star-connection circuit; calculating a braking torque T required by an elevator, and making an equal torque line which is equal to the braking torque T required by the elevator on the plurality of torque-speed curves, wherein the equal torque line has left and right intersection points with each torque-speed curve, the speed corresponding to the left intersection point is the lowest braking speed V0 of the permanent magnet synchronous traction motor, and the speed corresponding to the right intersection point is the highest braking speed V1 of the permanent magnet synchronous traction motor; and selecting one from among the torque-speed curves in which the highest braking speed V1 is greater than the highest running speed V permitted by the elevator, and setting the series resistance value R2 corresponding to the selected torque-speed curve as the resistance value R2 of a series resistor. Therefore, the design method may select a series resistor that has an appropriate resistance value, thus improving the safety of the elevator.

Description

电梯永磁同步曳引机的封星电路设计方法Design Method of Sealing Star Circuit of Elevator Permanent Magnet Synchronous Traction Machine 技术领域Technical field
本发明涉及一种电梯永磁同步曳引机的封星电路设计方法。The invention relates to a method for designing a star sealing circuit of an elevator permanent magnet synchronous traction machine.
背景技术Background technique
在现有技术中，当电梯的机电式制动器制动力矩不足或失效时，并且电梯轿厢侧重量和对重侧重量处于非平衡状态时，悬挂系统会在重力作用下使轿厢产生超速，从而带来严重的安全风险。为了消除这种风险，对于永磁同步曳引机，可在切断了永磁同步曳引机的供电电路后，对永磁同步曳引机的三相绕组采用串联电阻以星形接法连接起来以限制轿厢的速度，这就是所谓的永磁同步曳引机的封星制动技术。In the prior art, when the braking torque of the electromechanical brake of the elevator is insufficient or fails, and the weight of the elevator car side and the weight of the counterweight side are in an unbalanced state, the suspension system will cause the car to overspeed under the action of gravity. This brings serious security risks. In order to eliminate this risk, for the permanent magnet synchronous traction machine, after cutting off the power supply circuit of the permanent magnet synchronous traction machine, the three-phase winding of the permanent magnet synchronous traction machine can be connected in a star connection with series resistance. To limit the speed of the car, this is the so-called star-sealing braking technology of the permanent magnet synchronous traction machine.
对于这种永磁同步曳引机的封星制动技术，如何选择串联电阻的电阻值以及封星接触器的规格是一个技术难题，但是，在现有技术中并没有一个明确的可行的设计方案。如果选择不合适，轻则会导致电梯故障频繁，重则会导致封星接触器触点烧损、变频器及主机线圈毁坏，有时甚至不能降低轿厢速度，从而造成安全风险。For this type of permanent magnet synchronous traction machine's star-sealing braking technology, how to choose the resistance value of the series resistance and the specifications of the star-sealing contactor is a technical problem. However, there is no clear and feasible design in the existing technology. Program. If the selection is inappropriate, it will cause frequent elevator failures in the lighter, and burn out the contacts of the sealed star contactor, destroy the coil of the inverter and the main engine, and sometimes even fail to reduce the car speed, thereby causing safety risks.
发明内容Summary of the invention
本发明的目的旨在解决现有技术中存在的上述问题和缺陷的至少一个方面。The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.
根据本发明的一个方面，提供一种电梯永磁同步曳引机的封星电路设计方法，所述封星电路包括封星接触器和分别串联在永磁同步曳引机的三相绕组的引线上的串联电阻。所述电梯永磁同步曳引机的封星电路设计方法包括以下步骤：According to one aspect of the present invention, there is provided a method for designing a star sealing circuit of an elevator permanent magnet synchronous traction machine. The star sealing circuit includes a star sealing contactor and lead wires connected in series to the three-phase windings of the permanent magnet synchronous traction machine. Series resistance on the The method for designing the star-sealing circuit of the elevator permanent magnet synchronous traction machine includes the following steps:
S100：获得所述永磁同步曳引机在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条力矩-速度曲线；S100: Obtain a plurality of torque-speed curves corresponding to different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine is short-circuited and braked through the star-sealing circuit;
S200：计算电梯所需的制动力矩T，并在多条力矩-速度曲线上做出一条与电梯所需的制动力矩T相等的等力矩线，该等力矩线与每条力矩-速度曲线有左、右两个交点，与左交点对应的速度为所述永磁同步曳引机的最低制动速度V0，与右交点对应的速度为所述永磁同步曳引机的最高制动速度V1；S200: Calculate the braking torque T required by the elevator, and make a constant torque line equal to the braking torque T required by the elevator on the multiple torque-speed curves, and these torque lines are related to each torque-speed curve There are two intersections, left and right, the speed corresponding to the left intersection is the lowest braking speed V0 of the permanent magnet synchronous traction machine, and the speed corresponding to the right intersection is the highest braking speed of the permanent magnet synchronous traction machine V1;
S300：从最高制动速度V1大于电梯所允许的最高运行速度V的力矩-速度曲线中选择一条，并将与所选择的这条力矩-速度曲线对应的串联电阻值R2设定为所述封星电路的串联电阻的电阻值R2。S300: Select one of the torque-speed curves whose maximum braking speed V1 is greater than the maximum allowable operating speed V of the elevator, and set the series resistance value R2 corresponding to the selected torque-speed curve as the seal The resistance value R2 of the series resistance of the star circuit.
根据本发明的一个实例性的实施例，所述的电梯永磁同步曳引机的封星电路设计方法还包括以下步骤：According to an exemplary embodiment of the present invention, the method for designing the star sealing circuit of the elevator permanent magnet synchronous traction machine further includes the following steps:
S400：获得所述永磁同步曳引机在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条冲击电流峰值-速度曲线；S400: Obtain multiple impulse current peak-speed curves corresponding to different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine is short-circuited and braked through the star-sealing circuit;
S500：选择与所设定的封星电路的串联电阻的电阻值R2对应的一条冲击电流峰值-速度曲线，并根据所选择的这条冲击电流峰值-速度曲线确定与电梯所允许的最高运行速度V对应的最高冲击电流C；S500: Select an impulse current peak-speed curve corresponding to the resistance value R2 of the series resistance of the set sealing circuit, and determine the maximum operating speed allowed by the elevator according to the selected impulse current peak-speed curve The highest impulse current C corresponding to V;
S600：根据所确定的最高冲击电流C选择所述封星接触器的规格，使得所选择的封星接触器可承受所确定的最高冲击电流C。S600: Select the specifications of the sealed star contactor according to the determined highest impulse current C, so that the selected sealed star contactor can withstand the determined highest impulse current C.
根据本发明的另一个实例性的实施例，在所述步骤S100中，利用计算机模拟计算出所述永磁同步曳引机在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条力矩-速度曲线。According to another exemplary embodiment of the present invention, in the step S100, computer simulation is used to calculate the difference in series resistance value of the permanent magnet synchronous traction machine when the permanent magnet synchronous traction machine is short-circuited and braked by the sealing circuit. R1, R2, R3, R4, R5 respectively correspond to multiple torque-speed curves.
根据本发明的另一个实例性的实施例，在所述步骤S100中，利用实测方法绘制出所述永磁同步曳引机在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条力矩-速度曲线。According to another exemplary embodiment of the present invention, in the step S100, the actual measurement method is used to plot the relationship between the permanent magnet synchronous traction machine and the different series resistance value when the permanent magnet synchronous traction machine is short-circuited and braked by the sealing circuit. R1, R2, R3, R4, R5 respectively correspond to multiple torque-speed curves.
根据本发明的另一个实例性的实施例，在所述步骤S400中，利用计算机模拟计算出所述永磁同步曳引机在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条冲击电流峰值-速度曲线。According to another exemplary embodiment of the present invention, in the step S400, computer simulation is used to calculate the difference in series resistance value of the permanent magnet synchronous traction machine when the permanent magnet synchronous traction machine is short-circuited and braked by the sealing circuit. R1, R2, R3, R4, R5 correspond to multiple peak-speed curves of impulse current respectively.
根据本发明的另一个实例性的实施例，在所述步骤S400中，利用实 测方法绘制出所述永磁同步曳引机在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条冲击电流峰值-速度曲线。According to another exemplary embodiment of the present invention, in the step S400, the actual measurement method is used to plot the relationship between the permanent magnet synchronous traction machine and the different series resistance value when the permanent magnet synchronous traction machine is braked by the short circuit of the sealing circuit. R1, R2, R3, R4, R5 correspond to multiple peak-speed curves of impulse current respectively.
根据本发明的另一个实例性的实施例，在所述步骤S300中，所选择的这条力矩-速度曲线的最高制动速度V1为电梯所允许的最高运行速度V的1.1～1.3倍。According to another exemplary embodiment of the present invention, in the step S300, the selected maximum braking speed V1 of the torque-speed curve is 1.1-1.3 times the maximum operating speed V allowed by the elevator.
根据本发明的另一个实例性的实施例，在所述步骤S300中，所选择的这条力矩-速度曲线的最高制动速度V1为电梯所允许的最高运行速度V的1.2倍。According to another exemplary embodiment of the present invention, in the step S300, the selected maximum braking speed V1 of the torque-speed curve is 1.2 times the maximum operating speed V allowed by the elevator.
根据本发明的另一个实例性的实施例，在所述步骤S600中，所选择的封星接触器可承受的最大冲击电流为所确定的最高冲击电流C的1.1～1.3倍。According to another exemplary embodiment of the present invention, in the step S600, the maximum inrush current that the selected star-sealing contactor can withstand is 1.1 to 1.3 times the determined maximum inrush current C.
根据本发明的另一个实例性的实施例，在所述步骤S600中，所选择的封星接触器可承受的最大冲击电流为所确定的最高冲击电流C的1.2倍。According to another exemplary embodiment of the present invention, in the step S600, the maximum inrush current that the selected star-sealing contactor can withstand is 1.2 times the determined maximum inrush current C.
在根据本发明的前述各个实例性的实施例中，可方便地选择出具有合适电阻值的串联电阻，使得永磁同步曳引机能够可靠地实现电梯制动，提高了电梯使用安全性。In the foregoing various exemplary embodiments according to the present invention, a series resistor with a suitable resistance value can be easily selected, so that the permanent magnet synchronous traction machine can reliably achieve elevator braking and improve the safety of elevator use.
此外，在本发明的前述一些实施例中，还可方便地选择出具有合适规格的封星接触器，使得永磁同步曳引机能够可靠地实现电梯制动，提高了电梯使用安全性。In addition, in some of the foregoing embodiments of the present invention, a star-sealing contactor with appropriate specifications can also be easily selected, so that the permanent magnet synchronous traction machine can reliably achieve elevator braking and improve the safety of elevator use.
通过下文中参照附图对本发明所作的描述，本发明的其它目的和优点将显而易见，并可帮助对本发明有全面的理解。Through the following description of the present invention with reference to the accompanying drawings, other objects and advantages of the present invention will be apparent and can help a comprehensive understanding of the present invention.
附图说明Description of the drawings
图1显示根据本发明的一个实施例的电梯永磁同步曳引机的封星电路的原理图；Figure 1 shows a schematic diagram of a star sealing circuit of an elevator permanent magnet synchronous traction machine according to an embodiment of the present invention;
图2显示图1所示的永磁同步曳引机在通过封星电路短接制动时的与不同串联电阻值分别对应的多条力矩-速度曲线；Fig. 2 shows multiple torque-speed curves corresponding to different series resistance values when the permanent magnet synchronous traction machine shown in Fig. 1 is short-circuited and braked by the star-sealing circuit;
图3显示图1所示的永磁同步曳引机在通过封星电路短接制动时的与 不同串联电阻值分别对应的多条冲击电流峰值-速度曲线。Figure 3 shows the multiple peak-speed curves of impulse current corresponding to different series resistance values when the permanent magnet synchronous traction machine shown in Figure 1 is short-circuited and braked by the star-sealing circuit.
具体实施方式Detailed ways
下面通过实施例，并结合附图，对本发明的技术方案作进一步具体的说明。在说明书中，相同或相似的附图标号指示相同或相似的部件。下述参照附图对本发明实施方式的说明旨在对本发明的总体发明构思进行解释，而不应当理解为对本发明的一种限制。In the following, the technical solutions of the present invention will be further described in detail through embodiments and in conjunction with the drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, and should not be construed as a limitation to the present invention.
另外，在下面的详细描述中，为便于解释，阐述了许多具体的细节以提供对本披露实施例的全面理解。然而明显地，一个或多个实施例在没有这些具体细节的情况下也可以被实施。在其他情况下，公知的结构和装置以图示的方式体现以简化附图。In addition, in the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, obviously, one or more embodiments can also be implemented without these specific details. In other cases, well-known structures and devices are shown in the form of illustrations to simplify the drawings.
根据本发明的一个总体技术构思，提供一种电梯永磁同步曳引机的封星电路设计方法，所述封星电路包括封星接触器和分别串联在永磁同步曳引机的三相绕组的引线上的串联电阻。所述电梯永磁同步曳引机的封星电路设计方法包括以下步骤：获得所述永磁同步曳引机在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条力矩-速度曲线；计算电梯所需的制动力矩T，并在多条力矩-速度曲线上做出一条与电梯所需的制动力矩T相等的等力矩线，该等力矩线与每条力矩-速度曲线有左、右两个交点，与左交点对应的速度为所述永磁同步曳引机的最低制动速度V0，与右交点对应的速度为所述永磁同步曳引机的最高制动速度V1；从最高制动速度V1大于电梯所允许的最高运行速度V的力矩-速度曲线中选择一条，并将与所选择的这条力矩-速度曲线对应的串联电阻值R2设定为所述封星电路的串联电阻的电阻值R2。According to a general technical concept of the present invention, a method for designing a star sealing circuit of an elevator permanent magnet synchronous traction machine is provided. The star sealing circuit includes a star sealing contactor and a three-phase winding connected in series to the permanent magnet synchronous traction machine. Series resistance on the leads of the device. The method for designing the star sealing circuit of the elevator permanent magnet synchronous traction machine includes the following steps: obtaining the series resistance values R1, R2, and R1 of the permanent magnet synchronous traction machine when the permanent magnet synchronous traction machine is short-circuited and braking through the star sealing circuit. R3, R4, R5 respectively correspond to multiple torque-speed curves; calculate the braking torque T required by the elevator, and make a constant torque equal to the braking torque T required by the elevator on the multiple torque-speed curves There are two left and right intersections between these torque lines and each torque-speed curve. The speed corresponding to the left intersection is the lowest braking speed V0 of the permanent magnet synchronous traction machine, and the speed corresponding to the right intersection is The maximum braking speed V1 of the permanent magnet synchronous traction machine; select one of the torque-speed curves whose maximum braking speed V1 is greater than the maximum allowable operating speed V of the elevator, and compare it with the selected torque-speed The series resistance value R2 corresponding to the curve is set as the resistance value R2 of the series resistance of the star sealing circuit.
图1显示根据本发明的一个实施例的电梯永磁同步曳引机的封星电路的原理图；Figure 1 shows a schematic diagram of a star sealing circuit of an elevator permanent magnet synchronous traction machine according to an embodiment of the present invention;
如图1所示，在图示的实施例中，电梯永磁同步曳引机的封星电路包括封星接触器11和分别串联在永磁同步曳引机20的三相绕组的引线上的串联电阻12。As shown in Figure 1, in the illustrated embodiment, the star-sealing circuit of the elevator permanent magnet synchronous traction machine includes a star-sealing contactor 11 and the lead wires connected in series to the three-phase windings of the permanent magnet synchronous traction machine 20, respectively. Series resistance 12.
如图1所示，在图示的实施例中，当电梯的机电式制动器制动力矩不 足或失效时，并且电梯轿厢侧重量和对重侧重量处于非平衡状态时，封星接触器11会切断了永磁同步曳引机20与电梯变频器30之间的供电电路。在切断了永磁同步曳引机20与电梯变频器30之间的供电电路之后，封星接触器11会对永磁同步曳引机20的三相绕组采用串联电阻12以星形接法连接起来以限制轿厢的速度。As shown in Figure 1, in the illustrated embodiment, when the electromechanical brake braking torque of the elevator is insufficient or fails, and the weight of the elevator car side and the weight of the counterweight side are in an unbalanced state, the sealing star contactor 11 The power supply circuit between the permanent magnet synchronous traction machine 20 and the elevator inverter 30 will be cut off. After cutting off the power supply circuit between the permanent magnet synchronous traction machine 20 and the elevator inverter 30, the star-sealing contactor 11 uses series resistance 12 to connect the three-phase windings of the permanent magnet synchronous traction machine 20 in a star connection. Get up to limit the speed of the car.
图2显示图1所示的永磁同步曳引机在通过封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条力矩-速度曲线。Fig. 2 shows the multiple torque-speed curves corresponding to different series resistance values R1, R2, R3, R4, R5 when the permanent magnet synchronous traction machine shown in Fig. 1 is short-circuited and braked by the star-sealing circuit.
如图1和图2所示，在图示的实施例中，电梯永磁同步曳引机20的封星电路设计方法包括以下步骤：As shown in Figures 1 and 2, in the illustrated embodiment, the design method of the star sealing circuit of the elevator permanent magnet synchronous traction machine 20 includes the following steps:
S100：获得永磁同步曳引机20在通过封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条力矩-速度曲线；S100: Obtain multiple torque-speed curves corresponding to different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine 20 is short-circuited and braked through the star-sealing circuit;
S200：计算电梯所需的制动力矩T，并在多条力矩-速度曲线上做出一条与电梯所需的制动力矩T相等的等力矩线，该等力矩线与每条力矩-速度曲线有左、右两个交点，与左交点对应的速度为永磁同步曳引机的最低制动速度V0，与右交点对应的速度为永磁同步曳引机的最高制动速度V1；S200: Calculate the braking torque T required by the elevator, and make a constant torque line equal to the braking torque T required by the elevator on the multiple torque-speed curves, and these torque lines are related to each torque-speed curve There are two intersections, left and right, the speed corresponding to the left intersection is the lowest braking speed V0 of the permanent magnet synchronous traction machine, and the speed corresponding to the right intersection is the highest braking speed V1 of the permanent magnet synchronous traction machine;
S300：从最高制动速度V1大于电梯所允许的最高运行速度V的力矩-速度曲线中选择一条，并将与所选择的这条力矩-速度曲线对应的串联电阻值R2设定为封星电路的串联电阻12的电阻值R2。S300: Select one of the torque-speed curves whose maximum braking speed V1 is greater than the maximum allowable operating speed V of the elevator, and set the series resistance value R2 corresponding to the selected torque-speed curve as the star-sealing circuit The resistance value of the series resistor 12 is R2.
如图2所示，当串联电阻12的电阻值被选择为R2时，永磁同步曳引机20在电梯所允许的最高运行速度V时的制动力矩T1大于电梯所需的制动力矩T，因此，能够实现电梯制动。As shown in Figure 2, when the resistance value of the series resistor 12 is selected as R2, the braking torque T1 of the permanent magnet synchronous traction machine 20 at the maximum operating speed V allowed by the elevator is greater than the braking torque T required by the elevator. Therefore, it is possible to achieve elevator braking.
图3显示图1所示的永磁同步曳引机20在通过封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条冲击电流峰值-速度曲线。Figure 3 shows the peak-speed of multiple impulse currents corresponding to different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine 20 shown in Figure 1 is short-circuited and braked by the star-sealing circuit. curve.
如图1至图3所示，在图示的实施例中，电梯永磁同步曳引机的封星电路设计方法，还包括以下步骤：As shown in Figures 1 to 3, in the illustrated embodiment, the method for designing a star-sealing circuit of an elevator permanent magnet synchronous traction machine further includes the following steps:
S400：获得永磁同步曳引机20在通过封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条冲击电流峰值-速度曲线；S400: Obtain multiple impulse current peak-speed curves corresponding to different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine 20 is short-circuited and braked by the star-sealing circuit;
S500：选择与所设定的封星电路的串联电阻12的电阻值R2对应的一条冲击电流峰值-速度曲线，并根据所选择的这条冲击电流峰值-速度曲线确定与电梯所允许的最高运行速度V对应的最高冲击电流C；S500: Select an impulse current peak-speed curve corresponding to the resistance value R2 of the series resistance 12 of the set sealing circuit, and determine the maximum operation allowed by the elevator according to the selected impulse current peak-speed curve The highest impulse current C corresponding to speed V;
S600：根据所确定的最高冲击电流C选择封星接触器11的规格，使得所选择的封星接触器11可承受所确定的最高冲击电流C。S600: Select the specifications of the sealed star contactor 11 according to the determined highest impulse current C, so that the selected sealed star contactor 11 can withstand the determined highest impulse current C.
如图3所示，由于选择的封星接触器11可承受永磁同步曳引机20短接制动时的最高冲击电流C，因此，封星接触器11不会出现烧毁等风险。As shown in Fig. 3, since the selected star-sealing contactor 11 can withstand the highest impulse current C when the permanent magnet synchronous traction machine 20 is short-circuited and braking, the star-sealing contactor 11 will not be burnt.
如图1和图2所示，在本发明的一个实例性的实施例中，在步骤S100中，可以利用计算机模拟计算出永磁同步曳引机20在通过封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条力矩-速度曲线。As shown in Figures 1 and 2, in an exemplary embodiment of the present invention, in step S100, a computer simulation can be used to calculate the performance of the permanent magnet synchronous traction machine 20 when the permanent magnet synchronous traction machine 20 is short-circuited and braked by the sealing circuit. Multiple torque-speed curves corresponding to different series resistance values R1, R2, R3, R4, R5, respectively.
如图1和图2所示，在本发明的另一个实例性的实施例中，在步骤S100中，可以利用实测方法绘制出永磁同步曳引机20在通过封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条力矩-速度曲线。As shown in Figures 1 and 2, in another exemplary embodiment of the present invention, in step S100, the actual measurement method can be used to plot the permanent magnet synchronous traction machine 20 when the permanent magnet synchronous traction machine 20 is short-circuited and braked by the sealing circuit Multiple torque-speed curves corresponding to different series resistance values R1, R2, R3, R4, R5 respectively.
如图1至图3所示，在本发明的一个实例性的实施例中，在步骤S400中，可以利用计算机模拟计算出永磁同步曳引机20在通过封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条冲击电流峰值-速度曲线。As shown in Figures 1 to 3, in an exemplary embodiment of the present invention, in step S400, computer simulation can be used to calculate the performance of the permanent magnet synchronous traction machine 20 when the permanent magnet synchronous traction machine 20 is short-circuited and braked by the sealing circuit. Multiple impulse current peak-speed curves corresponding to different series resistance values R1, R2, R3, R4, R5, respectively.
如图1至图3所示，在本发明的另一个实例性的实施例中，在步骤S400中，利用实测方法绘制出永磁同步曳引机20在通过封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条冲击电流峰值-速度曲线。As shown in FIGS. 1 to 3, in another exemplary embodiment of the present invention, in step S400, the actual measurement method is used to plot the performance of the permanent magnet synchronous traction machine 20 when it is short-circuited and braked by the sealing circuit. Multiple impulse current peak-speed curves corresponding to different series resistance values R1, R2, R3, R4, R5, respectively.
如图1和图2所示，在本发明的一个实例性的实施例中，在步骤S300中，所选择的这条力矩-速度曲线的最高制动速度V1为电梯所允许的最高运行速度V的1.1～1.3倍。As shown in Figures 1 and 2, in an exemplary embodiment of the present invention, in step S300, the maximum braking speed V1 of the selected torque-speed curve is the maximum operating speed V1 allowed by the elevator. 1.1 to 1.3 times of that.
如图1和图2所示，在本发明的另一个实例性的实施例中，在步骤S300中，所选择的这条力矩-速度曲线的最高制动速度V1为电梯所允许的最高运行速度V的1.2倍。As shown in Figures 1 and 2, in another exemplary embodiment of the present invention, in step S300, the selected maximum braking speed V1 of the torque-speed curve is the maximum operating speed allowed by the elevator 1.2 times of V.
如图1至图3所示，在本发明的一个实例性的实施例中，在步骤S600中，所选择的封星接触器11可承受的最大冲击电流为所确定的最高冲击电流C的1.1～1.3倍。As shown in FIGS. 1 to 3, in an exemplary embodiment of the present invention, in step S600, the maximum inrush current that the selected star-sealing contactor 11 can withstand is 1.1 of the determined maximum inrush current C ~1.3 times.
如图1至图3所示，在本发明的另一个实例性的实施例中，在步骤S600中，所选择的封星接触器11可承受的最大冲击电流为所确定的最高冲击电流C的1.2倍。As shown in Figures 1 to 3, in another exemplary embodiment of the present invention, in step S600, the maximum inrush current that the selected star-sealing contactor 11 can withstand is that of the determined maximum inrush current C 1.2 times.
本领域的技术人员可以理解，上面所描述的实施例都是示例性的，并且本领域的技术人员可以对其进行改进，各种实施例中所描述的结构在不发生结构或者原理方面的冲突的情况下可以进行自由组合。Those skilled in the art can understand that the embodiments described above are all exemplary, and those skilled in the art can improve them, and the structures described in the various embodiments do not conflict in terms of structure or principle. In the case of free combination.
虽然结合附图对本发明进行了说明，但是附图中公开的实施例旨在对本发明优选实施方式进行示例性说明，而不能理解为对本发明的一种限制。Although the present invention has been described with reference to the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred embodiments of the present invention, and should not be understood as a limitation to the present invention.
虽然本总体发明构思的一些实施例已被显示和说明，本领域普通技术人员将理解，在不背离本总体发明构思的原则和精神的情况下，可对这些实施例做出改变，本发明的范围以权利要求和它们的等同物限定。Although some embodiments of the present general inventive concept have been shown and described, those of ordinary skill in the art will understand that changes can be made to these embodiments without departing from the principle and spirit of the present general inventive concept. The scope is defined by the claims and their equivalents.
应注意，措词“包括”不排除其它元件或步骤，措词“一”或“一个”不排除多个。另外，权利要求的任何元件标号不应理解为限制本发明的范围。It should be noted that the word "comprise" does not exclude other elements or steps, and the word "a" or "one" does not exclude a plurality. In addition, any element reference signs in the claims should not be construed as limiting the scope of the present invention.

Claims (10)

  1. 一种电梯永磁同步曳引机的封星电路设计方法，所述封星电路包括封星接触器(11)和分别串联在永磁同步曳引机(20)的三相绕组的引线上的串联电阻(12)，A method for designing a star-sealing circuit of an elevator permanent magnet synchronous traction machine. The star-sealing circuit includes a star-sealing contactor (11) and series connection on the leads of the three-phase winding of the permanent magnet synchronous traction machine (20). Series resistance (12),
    所述电梯永磁同步曳引机的封星电路设计方法包括以下步骤：The method for designing the star-sealing circuit of the elevator permanent magnet synchronous traction machine includes the following steps:
    S100：获得所述永磁同步曳引机(20)在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条力矩-速度曲线；S100: Obtain multiple torque-speed curves corresponding to different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine (20) is short-circuited and braked by the star-sealing circuit ；
    S200：计算电梯所需的制动力矩T，并在多条力矩-速度曲线上做出一条与电梯所需的制动力矩T相等的等力矩线，该等力矩线与每条力矩-速度曲线有左、右两个交点，与左交点对应的速度为所述永磁同步曳引机的最低制动速度V0，与右交点对应的速度为所述永磁同步曳引机的最高制动速度V1；S200: Calculate the braking torque T required by the elevator, and make a constant torque line equal to the braking torque T required by the elevator on the multiple torque-speed curves, and these torque lines are related to each torque-speed curve There are two intersections, left and right, the speed corresponding to the left intersection is the lowest braking speed V0 of the permanent magnet synchronous traction machine, and the speed corresponding to the right intersection is the highest braking speed of the permanent magnet synchronous traction machine V1;
    S300：从最高制动速度V1大于电梯所允许的最高运行速度V的力矩-速度曲线中选择一条，并将与所选择的这条力矩-速度曲线对应的串联电阻值R2设定为所述封星电路的串联电阻(12)的电阻值R2。S300: Select one of the torque-speed curves whose maximum braking speed V1 is greater than the maximum allowable operating speed V of the elevator, and set the series resistance value R2 corresponding to the selected torque-speed curve as the seal The resistance value R2 of the series resistor (12) of the star circuit.
  2. 根据权利要求1所述的电梯永磁同步曳引机的封星电路设计方法，还包括以下步骤：The method for designing a star sealing circuit of an elevator permanent magnet synchronous traction machine according to claim 1, further comprising the following steps:
    S400：获得所述永磁同步曳引机(20)在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条冲击电流峰值-速度曲线；S400: Obtain multiple impulse current peak values corresponding to different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine (20) is short-circuited and braked through the sealing circuit. Speed curve
    S500：选择与所设定的封星电路的串联电阻(12)的电阻值R2对应的一条冲击电流峰值-速度曲线，并根据所选择的这条冲击电流峰值-速度曲线确定与电梯所允许的最高运行速度V对应的最高冲击电流C；S500: Select an impulse current peak-speed curve corresponding to the set resistance value R2 of the series resistance (12) of the star-sealing circuit, and determine the value allowed by the elevator according to the selected impulse current peak-speed curve The highest impulse current C corresponding to the highest operating speed V;
    S600：根据所确定的最高冲击电流C选择所述封星接触器(11)的规格，使得所选择的封星接触器(11)可承受所确定的最高冲击电流C。S600: Select the specifications of the star-sealing contactor (11) according to the determined highest impulse current C, so that the selected star-sealing contactor (11) can withstand the determined highest impulse current C.
  3. 根据权利要求1所述的电梯永磁同步曳引机的封星电路设计方法，其特征在于：The method for designing a star sealing circuit of an elevator permanent magnet synchronous traction machine according to claim 1, characterized in that:
    在所述步骤S100中，利用计算机模拟计算出所述永磁同步曳引机(20)在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条力矩-速度曲线。In the step S100, computer simulation is used to calculate the relationship between the permanent magnet synchronous traction machine (20) and the different series resistance values R1, R2, R3, R4, R5 when the permanent magnet synchronous traction machine (20) is short-circuited and braked by the sealing circuit. Corresponding to multiple torque-speed curves.
  4. 根据权利要求1所述的电梯永磁同步曳引机的封星电路设计方法，其特征在于：The method for designing a star sealing circuit of an elevator permanent magnet synchronous traction machine according to claim 1, characterized in that:
    在所述步骤S100中，利用实测方法绘制出所述永磁同步曳引机(20)在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条力矩-速度曲线。In the step S100, the actual measurement method is used to plot the relationship between the permanent magnet synchronous traction machine (20) and the different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine (20) is short-circuited and braked by the sealing circuit. Corresponding to multiple torque-speed curves.
  5. 根据权利要求2所述的电梯永磁同步曳引机的封星电路设计方法，其特征在于：The method for designing a star-sealing circuit of an elevator permanent magnet synchronous traction machine according to claim 2, characterized in that:
    在所述步骤S400中，利用计算机模拟计算出所述永磁同步曳引机(20)在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条冲击电流峰值-速度曲线。In the step S400, computer simulation is used to calculate the relationship between the permanent magnet synchronous traction machine (20) and the different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine (20) is short-circuited and braked by the sealing circuit. Corresponding to multiple peak-speed curves of impulse current.
  6. 根据权利要求2所述的电梯永磁同步曳引机的封星电路设计方法，其特征在于：The method for designing a star-sealing circuit of an elevator permanent magnet synchronous traction machine according to claim 2, characterized in that:
    在所述步骤S400中，利用实测方法绘制出所述永磁同步曳引机(20)在通过所述封星电路短接制动时的与不同串联电阻值R1、R2、R3、R4、R5分别对应的多条冲击电流峰值-速度曲线。In the step S400, the actual measurement method is used to plot the relationship between the permanent magnet synchronous traction machine (20) and the different series resistance values R1, R2, R3, R4, and R5 when the permanent magnet synchronous traction machine (20) is short-circuited and braked by the sealing circuit. Corresponding to multiple peak-speed curves of impulse current.
  7. 根据权利要求1所述的电梯永磁同步曳引机的封星电路设计方法，其特征在于：The method for designing a star sealing circuit of an elevator permanent magnet synchronous traction machine according to claim 1, characterized in that:
    在所述步骤S300中，所选择的这条力矩-速度曲线的最高制动速度V1为电梯所允许的最高运行速度V的1.1～1.3倍。In the step S300, the maximum braking speed V1 of the selected torque-speed curve is 1.1-1.3 times the maximum operating speed V allowed by the elevator.
  8. 根据权利要求7所述的电梯永磁同步曳引机的封星电路设计方法，其特征在于：The method for designing a star sealing circuit of an elevator permanent magnet synchronous traction machine according to claim 7, characterized in that:
    在所述步骤S300中，所选择的这条力矩-速度曲线的最高制动速度V1为电梯所允许的最高运行速度V的1.2倍。In the step S300, the maximum braking speed V1 of the selected torque-speed curve is 1.2 times the maximum operating speed V allowed by the elevator.
  9. 根据权利要求2所述的电梯永磁同步曳引机的封星电路设计方法，其特征在于：The method for designing a star-sealing circuit of an elevator permanent magnet synchronous traction machine according to claim 2, characterized in that:
    在所述步骤S600中，所选择的封星接触器(11)可承受的最大冲击电流为所确定的最高冲击电流C的1.1～1.3倍。In the step S600, the maximum inrush current that the selected star-sealing contactor (11) can withstand is 1.1 to 1.3 times the determined maximum inrush current C.
  10. 根据权利要求9所述的电梯永磁同步曳引机的封星电路设计方法，其特征在于：The method for designing a star-sealing circuit of an elevator permanent magnet synchronous traction machine according to claim 9, characterized in that:
    在所述步骤S600中，所选择的封星接触器(11)可承受的最大冲击电流为所确定的最高冲击电流C的1.2倍。In the step S600, the maximum inrush current that the selected star-sealing contactor (11) can withstand is 1.2 times the determined maximum inrush current C.
PCT/CN2019/128291 2019-11-07 2019-12-25 Star-connection circuit design method for elevator permanent magnet synchronous traction motor WO2021088229A1 (en)

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CN115072531B (en) * 2022-06-23 2023-10-27 重庆大学 Method for improving star sealing torque of permanent magnet synchronous traction machine of elevator

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