JP2015117119A - Elevator controller and elevator using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator controller that can reduce assembly man-hours and improve noise resistance, and an elevator using the elevator controller.SOLUTION: An elevator controller includes an inverter circuit that supplies AC power to a motor for driving a hoist. The elevator controller includes a printed circuit board 1 placed on a cooling fin 7. The printed circuit board 1 has areas A to D. The areas B and D include a brake control circuit 5 and an inverter control circuit 4, respectively. To the area A is connected an IPM 8 having the inverter circuit embedded therein. The area A includes an interface circuit 2 for sending and receiving signals between the IPM 8 and the inverter control circuit 4. The area C includes a power circuit 3.

Description

  The present invention relates to an elevator control device for driving an elevator and an elevator using the same.

  As a motor for a hoisting machine that drives an elevator up and down, an AC motor such as a permanent magnet synchronous motor is used. For this reason, in order to drive-control a hoisting machine, the elevator control apparatus containing an inverter apparatus is used. This elevator control device incorporates the main circuit of the inverter device, and provides control signals between the IPM (intelligent power module) that controls the supply of AC power to the motor, the IPM and its peripheral devices, and various control circuits. Inverter control circuit including an interface circuit for transmission / reception, a microcomputer for controlling the inverter (hereinafter abbreviated as “microcomputer”), a brake opening / closing control circuit for suppressing the rotation of the hoist, a group management control device, etc. And an elevator control circuit that receives an instruction from the host controller and executes elevator elevator control including an operation instruction for the inverter control circuit. Each control circuit and a power supply circuit such as a drive circuit built in the IPM are provided. These power supply circuits convert the voltage supplied from the main power supply device into a predetermined voltage for each circuit.

  As described above, since the elevator control device includes various circuits including a power circuit and a control circuit, assembly of the elevator control device requires a lot of time and cost. For this reason, reduction of an assembly man-hour and cost is calculated | required with respect to the elevator control apparatus.

  As a technique for reducing the number of man-hours for assembling a circuit in which a power system and a control system are mixed like an elevator control device, a technique described in Patent Document 1 is known. In the present technology, the control circuit unit and the power supply circuit unit are integrally configured using the same printed board. As a result, the number of assembling steps is reduced, the wiring length is shortened, and the radiation noise is reduced.

JP-A-9-130068

  In an elevator control device, a printed board is generally used to assemble a circuit. However, when the above conventional technique is applied, there is a problem that the number of assembling steps is not sufficiently reduced or radiation noise is not reduced because the circuit configuration is complicated.

  Therefore, the present invention provides an elevator control device that can reduce the number of assembly steps and improve noise resistance, and an elevator using the same.

  In order to solve the above problems, an elevator control apparatus according to the present invention includes an inverter circuit that supplies AC power to a motor that drives a hoisting machine, and is placed on a cooling fin and the cooling fin. A single printed board. This printed board has a first area, a second area, a third area, and a fourth area, and the first area and the second area respectively control a brake provided in the hoisting machine. A brake control circuit unit for controlling the inverter circuit and an inverter control circuit unit for controlling the inverter circuit. In the third area, a semiconductor device incorporating the inverter circuit is connected, and signals are transmitted and received between the semiconductor device and the inverter control circuit. An interface circuit unit is provided, and in the fourth region, a brake control circuit unit, an inverter control circuit unit, and a power supply circuit unit that supplies control power to the interface circuit unit are provided.

  In order to solve the above-described problems, an elevator according to the present invention includes a hoisting machine including a sheave rotated by a motor, a rope wound around the sheave, a car and a counterweight suspended by the rope, and a motor. A control panel for driving, and the car and the counterweight are moved up and down by the rope being driven by the sheave. The control panel includes the elevator control device according to the present invention.

  According to the present invention, the brake control circuit unit, the inverter control circuit unit, the interface circuit unit, and the power supply circuit unit in the elevator control device are aggregated, thereby suppressing the influence of noise and heat generation between the circuits. The main part can be integrated on a single printed board. Thereby, the assembly man-hour of an elevator control apparatus can be reduced, and noise resistance improves. Furthermore, the number of assembly steps of the elevator is reduced, and the reliability of the operation of the elevator is improved.

  Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

The circuit mounting structure of the elevator control apparatus which is one Example of this invention is shown. An example of connecting an IPM to a printed circuit board is shown. The prior art example of an elevator control apparatus is shown. An example of an elevator provided with the elevator control apparatus by the Example of FIG. 1 is shown.

  Embodiments of the present invention will be described below with reference to the drawings. Here, the IPM incorporates an inverter main circuit using IGBT (abbreviated as Insulated Gate Bipolar Transistor) in a resin case, and stores a driver circuit that drives the IGBT, a detection and protection circuit such as a short circuit and overheating, It is a well-known semiconductor device provided with the terminal for connecting with an external circuit. Note that AC power is supplied to the motor of the hoist (see “100” in FIG. 4) by the inverter main circuit built in the IPM.

  FIG. 1 shows a circuit mounting configuration of an elevator control apparatus according to an embodiment of the present invention.

  In this embodiment, a rectangular or square printed circuit board 1 is placed on the cooling fin 7 having a larger area than the printed circuit board 1. The printed circuit board 1 is screwed onto the cooling fins 7 by screws 14 (or bolts). A spacer 30 positioned between the printed board 1 and the cooling fin 7 is inserted into the screw 14. The printed circuit board 1 is separated from the surface of the cooling fin 7 by a predetermined distance corresponding to the length of the spacer 30. In the figure, the wiring pattern of the printed circuit board 1 is not shown.

  The printed circuit board 1 is divided into rectangular or square four regions A, B, C, and D (regions surrounded by broken lines in the figure). In these four areas A, B, C and D, respectively, an IPM having a built-in inverter main circuit and an IPM interface circuit section 2 for transmitting / receiving a control signal between the control circuits, a brake control circuit section 5 for a hoisting machine, There are provided a drive circuit built in the IPM, a detection / protection circuit, a control power supply circuit unit 3 constituting the power supply of each control circuit provided on the printed circuit board 1, and an inverter control circuit unit 4 for controlling the inverter main circuit unit by a microcomputer.

  An IPM 8 is located between the area A of the printed circuit board 1 and the cooling fin 7. The back surface of the IPM 8 is in contact with the cooling fin 7, whereby heat generated in the IPM is radiated to the cooling fin 7. In addition, the dashed-dotted line shown in the figure shows the external shape of the IPM located under the printed circuit board 1. In the IPM interface circuit unit 2 provided in the region A, a plurality of electrode pads 31 are provided along one side of the blind substrate 1. Of the DC wiring 11, wirings (P, N) for supplying DC power to the inverter main circuit built in the IPM and the DC power supply terminal of the IPM are fastened to the electrode pad 31 with screws. In the region A, a connector 6 is provided for electrically connecting a plurality of control terminals arranged in a line on the IPM 8 to the printed circuit board 1. The IPM 8 is connected and supported in the area A of the printed circuit board 1 by screwing the electrode pad 31 and the DC power supply terminal and connecting the control terminal and the connector 6.

  Here, three or more electrode pads 31 are provided so that a plurality of types of IPMs can be connected. The printed circuit board 1 of FIG. 1 is provided with four electrode pads 31, and two of the electrode pads 31 are connected to DC power supply terminals (P, N) provided along one side of the IPM 8. On the other hand, in the IPM connection example shown in FIG. 2, the DC power supply terminals (P, N) and the regenerative brake circuit terminal (BR) are provided along one side of the IPM 8, so that three electrode pads are used. . Further, two or more connectors 6 are provided so that a plurality of types of IPMs can be connected. In FIG. 1, the control terminal of the IPM 8 is connected to the lower connector in the figure. In contrast, in the example of connection of the IPM 8 to the printed circuit board 1 shown in FIG. 2, the control terminal of the IPM 8 is connected to the upper connector 6 in FIG. With such a connection configuration with the IPM 8 in the printed circuit board 1, the same printed circuit board can be applied to a plurality of types of IPMs. Therefore, since the printed circuit board having the same configuration can be applied to the IPM lineup, that is, the motor capacity lineup of the hoisting machine, the cost of circuit creation can be reduced.

  In the present embodiment, a snubber capacitor 9 that suppresses a spike voltage generated in the inverter main circuit is connected to the wiring pattern of the printed circuit board 1 extending from the electrode pad 31. Thereby, the snubber capacitor 9 can be mounted on the printed circuit board 1 and immediately above the IPM. Moreover, since the snubber capacitor 9 is located immediately above the IPM, the wiring length between the snubber capacitor 9 and the IPM 8 can be shortened. Thereby, the wiring inductance between the snubber capacitor 9 and the IPM 8 is reduced.

  In the IPM 8 of FIG. 1, three-phase AC output terminals U, V, W and a regenerative brake circuit terminal BR are provided on the other side perpendicular to the side on which the DC power supply terminals (P, N) are provided. It is done. A portion of the IPM 8 where these terminals are provided protrudes outward from the end of the printed circuit board 1. The regenerative brake wiring in the AC wiring 12 and the DC wiring 11 is screwed directly to the AC output terminal and the terminal of the regenerative brake circuit, respectively, without going through the printed circuit board 1. Therefore, in the area A of the printed circuit board 1, no electrode pad is formed on the side perpendicular to the side where the electrode pad 31 for the DC power supply terminal is provided. Therefore, when forming the electrode pads, it is not necessary to consider the alignment accuracy of the AC output terminals and the regenerative brake circuit terminals arranged in a direction perpendicular to the direction in which the DC power supply terminals are arranged, and the printed circuit board can be easily manufactured. Further, the IPM 8 can be easily attached to the printed circuit board 1.

  Next, a surface mount type driving element 10 is used for the brake control circuit unit 5 provided in the region B of the printed circuit board 1. Here, the region B and the region A are arranged along the same side of the printed circuit board 1. The drive element 10 is fixed on the printed circuit board 1 by electrically bonding the electrode formation surface to the wiring pattern by soldering or the like. Although the power capacity of the brake control circuit is smaller than that of the inverter main circuit, a power element such as a power MOSFET or IGBT is used as the drive element 10 in order to drive an electromagnetic brake or the like. For this reason, in the present embodiment, the heat radiation pad 15 is affixed directly below the drive element 10 on the back surface of the front surface of the printed circuit board 1 on which the drive element 10 is provided. Thereby, the heat generated by the drive element 10 can be radiated to the cooling fins 7 while the drive element 10 is mounted on the printed circuit board 1. Moreover, since the drive element 10 is surface-mounted, the heat dissipation area increases. For this reason, the heat generated by the drive element 10 can be efficiently radiated.

  In the present embodiment, the drive element 10 is located in a portion of the region B adjacent to one side of the printed circuit board 1 where the regions A and B are adjacent to each other. A wiring 13 to the brake device is connected to a region B adjacent to this portion. Thereby, the drive element 10 which is a power element is separated from the inverter control circuit unit 4 provided in the region D as will be described later, and the influence of heat generated by the drive element 10 on the inverter control circuit unit 4 can be reduced.

  Next, the area C and the area A of the printed board 1 are arranged along one side perpendicular to one side of the printed board 1 in which the area B and the area A are arranged. Therefore, in the printed circuit board 1, the region B and the region C are diagonally arranged. The power supply circuit unit 3 provided in the region C appropriately converts the voltage of a main power supply device (not shown), and includes a drive circuit, a detection / protection circuit, an interface circuit unit 2, a brake control circuit unit 5, which will be described later. This is supplied to the inverter control circuit unit 4. Thus, by providing the power supply circuit unit shared by the plurality of circuits provided on the printed circuit board 1 in the region C, the power supply circuit scale as a whole of the elevator control device can be reduced.

  Next, in the printed circuit board 1, the region D where the inverter control circuit unit 4 is provided is diagonally arranged with the region A to which the IPM 8 is connected. Thereby, it is possible to reduce the influence of heat generation from the IGBT which is the semiconductor switching element of the inverter main circuit built in the IPM 8 on the inverter control circuit unit 4. For this reason, the malfunction and malfunction accompanying the temperature rise of the inverter control circuit part 4 are prevented. Therefore, the reliability of the elevator control device is ensured while the inverter main circuit portion and the inverter control circuit portion are provided on the same printed circuit board.

  FIG. 3 shows a conventional example of an elevator control device. The main effects of the embodiment of FIG. 1 will be described with reference to FIG.

  The conventional example shown in FIG. 3 is provided with an elevator control circuit unit 23 that executes elevator machine control including an operation command for the inverter control circuit, an inverter circuit control unit 24 that controls the inverter device, and an interface circuit unit 25 with peripheral devices. The microcomputer control printed board 16, the brake control printed board 17 in which a brake control circuit part is provided, and the IPM interface printed board 18 are provided. Each printed board is connected by wiring cables 19 to 21 and transmits and receives signals through these wiring cables. The brake control printed board 17 includes a cable 13 that is connected to a brake device of the hoisting machine, a drive element 10 that drives the brake, and a cooling fin 22 that cools the drive element 10. In the IPM 8, a wiring 12 that supplies AC power to the motor of the hoisting machine, a wiring 11 that connects the inverter main circuit to a DC power source, and a snubber capacitor 9 that suppresses the spike voltage of the inverter are connected. The IPM interface printed board 18 is directly connected to the control terminal of the IPM 8 by the connector 6. The IPM interface printed board 18 is connected to a wiring 32 for monitoring the DC voltage of the inverter.

  As described above, the conventional example has many printed boards and wiring between printed boards, and requires a lot of assembly steps. Further, the installation distance between the IPM interface printed board 18 and the microcomputer control printed board is increased, and the control circuit is easily influenced by radiation noise from the inverter circuit.

  On the other hand, in the embodiment of FIG. 1, the IPM interface circuit unit 2, the brake control circuit unit 5, the control power circuit unit 3, and the inverter in the elevator control device are respectively provided in the four regions A to D of the single printed circuit board 1. A control circuit unit 4 is provided. Then, such a printed circuit board 1 is placed on the cooling fin 7. Thereby, since several circuit parts are mounted in one printed circuit board, the assembly man-hour of an elevator control apparatus is reduced. In addition, since wiring between circuit portions is performed by a wiring pattern on the printed board, the wiring length is shortened. Thereby, the influence of the radiation noise etc. with respect to a control circuit is reduced.

  Further, in the above conventional example, an insertion part with a cooling fin 22 is used as the drive element 10 of the brake control circuit unit. On the other hand, in the embodiment of FIG. 1, the driving element 10 is surface-mounted on the printed circuit board 1 to which the IPM is attached, so that the cooling fin 7 for cooling the IPM 8 is used without using individual cooling fins. It can dissipate heat.

  In the embodiment of FIG. 1, the connector 6 in the IPM interface circuit unit 2 and the control terminal of the IPM 8 are directly connected as in the conventional example, but the DC power supply wiring 11 of the inverter and the DC power input terminal of the IPM 8 However, by tightening together with the printed board, the snubber capacitor 9 which has been conventionally connected to the DC terminal of the IPM 8 can be mounted on the printed board. Further, in the present embodiment, the wiring for which the DC voltage input wiring 11 for the inverter has been prepared separately becomes unnecessary.

  Further, in the conventional example, a power conversion circuit is provided on each printed board. On the other hand, in the embodiment of FIG. 1, an IPM interface circuit unit 2, a brake control circuit unit 5, a control power supply circuit unit 3, and an inverter control circuit unit 4 in the elevator control device are provided on one printed circuit board 1. Thus, the control power supply circuit unit can be shared. Thereby, the power supply circuit scale can be reduced as the whole elevator control device.

  Moreover, since the motor capacity to drive changes with the operation speed or load capacity of an elevator, several types of capacity | capacitance of IPM used for an inverter apparatus are required. For this reason, conventionally, a plurality of types of IPM interface printed boards are required. On the other hand, in the embodiment of FIG. 1, by providing a plurality of electrode pads and connectors for attaching the IPM on the printed board, a kind of printed board can be applied to a plurality of types of IPM.

  In this embodiment, the machine control circuit unit (corresponding to “23” in FIG. 3) not shown in FIG. 1 takes into consideration the influence of radiation noise and the influence of heat radiation from the power circuit. Thus, it is mounted on a printed board different from the printed board 1.

  FIG. 4 shows an example of an elevator including the elevator control device according to the embodiment of FIG. The elevator of the present embodiment is a so-called machine room-less elevator in which the hoisting machine 100 and the control panel 120 are installed in a hoistway.

  In the elevator shown in FIG. 4, a rope 110 is provided at a lower part of a car 101, a car lower pulley 102, a direction changing pulley 107, a sheave 53, a direction changing pulley 106, a direction changing pulley 105, and a counterweight provided on a counterweight 103. Are sequentially wound around the direction change pulley 104. And both ends of the rope 110 are fixed to the top of a hoistway (not shown). By such a rope 110, the car 101 and the counterweight 103 are suspended in the hoistway.

  The hoisting machine 100 is installed in a narrow space between a side surface of the car and a hoistway wall (not shown). In the present embodiment, the counterweight 103 and the direction change pulleys 105 to 107 are also disposed in the same space as the space where the hoisting machine 100 is installed.

  When AC power is supplied from the control panel 120 to the motor unit of the hoisting machine 100, the motor unit rotates and the sheave 53 in the hoisting machine 100 rotates. When the sheave 53 rotates, the rope 110 is driven by the friction between the rope 110 and the groove of the sheave 53, whereby the car 101 and the counterweight 103 move up and down in the hoistway space.

  The control panel 120 for supplying AC power to the motor unit of the hoisting machine 100 is arranged on the side opposite to the hoisting machine 100 with the car 101 interposed therebetween, like the hoisting machine 100, It is installed in a narrow space between a hoistway wall (not shown). The control panel 120 stores the elevator control device of FIG. 1 in a housing. When AC power output from the IPM 8 in FIG. 1 is supplied to the motor unit of the hoisting machine 100 via the cable 121, the hoisting machine 100 rotates and the car 101 is driven up and down.

  According to the elevator of FIG. 4, the assembly man-hour for the control panel is reduced, so that the assembly man-hour is reduced as a whole and the cost is reduced. In addition, since a failure or malfunction of the circuit due to radiation noise is prevented in the control panel, the failure of the elevator is prevented and the reliability of the operation of the elevator is improved.

  In addition, this invention is not limited to each Example mentioned above, Various modifications are included. For example, each of the above-described embodiments has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to one having all the configurations described. Furthermore, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  For example, in the embodiment of FIG. 1, instead of the IPM 8, a power semiconductor module that incorporates an inverter main circuit in a resin case but does not incorporate a drive circuit may be used. In this case, a drive circuit can be provided in the area A of the printed circuit board 1.

DESCRIPTION OF SYMBOLS 1 ... Print board 2 ... IPM interface circuit part 3 ... Power supply circuit part 4 ... Inverter control circuit part 5 ... Brake control circuit part 6 ... Connector 7 ... Cooling fin 8 ... IPM
DESCRIPTION OF SYMBOLS 9 ... Snubber capacitor 10 ... Drive element 11 ... DC wiring 12 ... AC wiring 13 ... Power supply connection wiring 14 ... Screw 15 ... Heat radiation pad 16 ... Microcomputer control printed board 17 ... Brake control printed board 18 ... IPM interface printed boards 19, 20, DESCRIPTION OF SYMBOLS 21 ... Wiring cable 22 ... Cooling fin 23 ... Unit control circuit unit 24 ... Inverter control circuit unit 25 ... Interface circuit unit 31 ... Electrode pad 32 ... Wiring 53 for inverter DC voltage monitoring ... Sheave 100 ... Hoisting machine 101 ... Car 102 ... Car lower pulley 103 ... Counterweight 104, 105, 106, 107 ... Direction change pulley 110 ... Rope 120 ... Control panel 121 ... Cable

Claims (7)

In an elevator control device including an inverter circuit that supplies AC power to a motor that drives a hoisting machine,
A cooling fin, and one printed board placed on the cooling fin;
With
The printed circuit board has a first region, a second region, a third region and a fourth region;
In the first region and the second region, respectively, a brake control circuit unit for controlling a brake provided in the hoisting machine and an inverter control circuit unit for controlling the inverter circuit are provided.
In the third region, a semiconductor device incorporating the inverter circuit is connected, and an interface circuit unit for transmitting and receiving signals between the semiconductor device and the inverter control circuit is provided.
The elevator control device according to claim 4, wherein a power supply circuit unit that supplies control power to the brake control circuit unit, the inverter control circuit unit, and the interface circuit unit is provided in the fourth region.   2. The elevator control device according to claim 1, wherein the third region includes three or more DC terminal connection portions of the semiconductor device and two or more control terminal connection portions of the semiconductor device.   3. The driving element in the brake control circuit unit according to claim 1, wherein the driving element is surface-mounted in the first region, and a heat dissipation pad is provided under the driving element through the first region. Elevator control device.   4. The elevator control device according to claim 1, wherein the second area and the third area are diagonally arranged. 5.   4. The elevator control device according to claim 3, wherein the driving element is disposed along one side of the printed board.   The elevator control device according to any one of claims 1 to 5, wherein a snubber capacitor is provided in the third region. A hoisting machine including a sheave rotated by a motor, a rope wound around the sheave, a car and a counterweight suspended by the rope, and a control panel for driving the motor, and the sheave by the sheave In an elevator in which the car and the counterweight are moved up and down by driving a rope,
The control panel
A cooling fin, and one printed board placed on the cooling fin;
With
The printed circuit board has a first region, a second region, a third region and a fourth region;
In the first region and the second region, a brake control circuit unit that controls a brake included in the hoist and an inverter control circuit unit that controls an inverter circuit that supplies AC power to the motor, respectively. Is provided,
In the third region, a semiconductor device incorporating the inverter circuit is connected, and an interface circuit unit for transmitting and receiving signals between the semiconductor device and the inverter control circuit is provided.
The elevator according to claim 4, wherein the fourth region is provided with a power supply circuit unit for supplying control power to the brake control circuit unit, the inverter control circuit unit, and the interface circuit unit.

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