WO2005090216A1 - エレベータ制御装置 - Google Patents
エレベータ制御装置 Download PDFInfo
- Publication number
- WO2005090216A1 WO2005090216A1 PCT/JP2005/005454 JP2005005454W WO2005090216A1 WO 2005090216 A1 WO2005090216 A1 WO 2005090216A1 JP 2005005454 W JP2005005454 W JP 2005005454W WO 2005090216 A1 WO2005090216 A1 WO 2005090216A1
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- WIPO (PCT)
- Prior art keywords
- voltage
- charge
- discharge
- electric double
- double layer
- Prior art date
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Classifications
-
- 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
- H02P3/08—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 a dc motor
- H02P3/14—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 a dc motor by regenerative braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
- B66B1/308—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor with AC powered elevator drive
-
- 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
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/02—Details
- H02P1/029—Restarting, e.g. after power failure
-
- 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
- H02P3/08—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 a dc motor
- H02P3/12—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 a dc motor by short-circuit or resistive braking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Definitions
- the present invention relates to an elevator control device that effectively uses electric power generated during a regenerative operation of an elevator.
- an elevator control device includes a control drive system that supplies a predetermined drive power as shown in FIG. 1 and a rope-type elevator that raises and lowers a car based on the drive power supplied from the control drive system. It is configured.
- the control drive system includes a commercial AC power supply 1, a rectifier circuit 2 for converting the AC power of the commercial AC power supply 1 into DC power, a DC capacitor 3 for smoothing the DC power converted by the rectifier circuit 2, and a DC capacitor Inverter 4 that converts the DC power smoothed in step 3 into AC power of the required frequency and supplies it to motor 1 1.
- the speed command from inverter 4 based on the specified speed command and the rotation speed of motor 11 1.
- a drive control unit 5 that controls so as to output AC power having a frequency corresponding to the frequency, and also controls a resistance chopstick described later.
- the rope-type elevator has a motor 11, a rope 13 wound around a hoisting drum 12 connected to a rotating shaft of the motor 11, and a rope 13 suspended from an end of the rope 13.
- a car 14 and a counterweight 15 are provided.By the way, in the elevator control device as described above, when the car 14 rises when it is almost full or when it descends near the sky.
- the elevator control device as described above uses the electric motor 1 during regenerative operation.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an elevator control device that reliably charges electric power by regenerative operation and controls the electric power to be used effectively during power running operation. Disclosure of the invention
- the present invention has the following constitution. That is, a rectifier circuit that converts an AC voltage from an AC power supply into a DC voltage,
- An inverter for converting the smoothed DC voltage into an AC voltage having a variable voltage and a variable frequency, and outputting the AC voltage
- a resistor connected in parallel with the DC capacitor
- an inverter is controlled to output an AC voltage having a variable voltage and a variable frequency according to a speed command, and a drive control unit that controls a resistance chopper is provided.
- An electric double layer capacitor which is connected in parallel with the DC capacitor, has a sufficiently large electrostatic capacity than the DC capacitor, and can store almost regenerative electric power from the motor side,
- a voltage detection unit that detects a terminal voltage of the electric double layer capacitor
- the voltage near the rated voltage of the electric double layer capacitor is set as the operating voltage of the resistor, and when the terminal voltage detected by the voltage detector reaches the voltage near the rated voltage of the electric double layer capacitor, the operation of the resistance chopper is controlled.
- the present invention provides an electric double layer capacitor having a sufficiently larger capacitance than the DC capacitor in parallel with the DC capacitor and capable of almost storing the regenerative power from the motor side.
- the drive control unit uses the voltage near the rated voltage of the electric double layer capacitor as the operating voltage of the resistor, and the terminal voltage detected by the voltage detector reaches the voltage near the rated voltage of the electric double layer capacitor.
- the resistance chopper By controlling the operation of the resistance chopper, most of the electric power generated by the electric motor can be charged to the electric double layer capacitor, and if the voltage exceeds the rated voltage of the electric double layer capacitor, the resistance chopping is controlled. Since the heat is consumed by heat, the electric double layer capacitor can be protected from overcharging.
- the elevator control device further includes an initial charging circuit newly connected to the electric double layer capacitor in series with the configuration of the above item (1), in which a switch and a resistor are connected in parallel,
- the switch is turned off at the start of energization of the AC power supply 1, the electric double layer capacitor is charged while limiting the current at the time of energization of the AC power supply with a resistor, and the switch is turned on after a required time after the start of energization of the AC power supply.
- a drive control unit that connects an electric double layer capacitor in parallel with the capacitor
- Another elevator control device which is newly configured as described in the above item (1), is newly connected in series with an electric double layer capacitor, and is an electric double layer capacitor that is overcurrent due to a short-circuit fault of a DC capacitor or an inverter. If a current cutoff circuit is provided to cut off the flow into the capacitor, it is also possible to protect the electric double layer capacitor from overcurrent due to a short-circuit fault of the DC capacitor jumper.
- the elevator control device can be configured such that the inrush at the start of energization of the AC power supply can be achieved by newly combining the above-described configuration (1) with the two configurations described in (2) above. It is possible to protect the electric double layer capacitor from overcurrent caused by short-circuit fault of DC capacitor inverter during current and normal operation.
- the present invention is configured such that, in the configuration of the above-mentioned paragraphs (1) to (3), the DC condenser is provided so as to be connectable to the DC capacitor, and is more sufficiently than the DC condenser. Has a large capacitance and can store almost all the regenerative power from the motor side, and when the inverter is below the predetermined switching frequency, removes the DC capacitor and substitutes the voltage smoothing function of the DC capacitor. Electric double layer capacitor
- a voltage detection unit that detects a terminal voltage of the electric double layer capacitor
- the voltage near the rated voltage of the electric double-layer capacitor is used as the operating voltage of the resistor, and the terminal voltage detected by the voltage detection unit is S.
- the operation of the resistor chopper is controlled.
- the present invention newly provides a charge / discharge circuit connected between DC output lines of a rectifier circuit, in addition to a general elevator control device configuration for consuming power generated during regenerative operation by a resistance valve.
- An electric double layer capacitor connected to the output side of the charge / discharge circuit and storing a DC voltage generated in the DC capacitor during charge control;
- a capacitor voltage detector that detects the voltage generated in the DC capacitor; and a voltage higher than the voltage rectified from the AC power supply through the rectifier circuit and lower than the operating voltage of the resistor chipper! / Lower than the charge setting voltage and the rectification voltage.
- the charge and discharge circuit is controlled so as to charge the electric double layer capacitor.
- a charge / discharge control unit that controls the discharge of the charge / discharge circuit so that the electric double layer capacitor discharges when the generated voltage exceeds the discharge set voltage;
- the elevator control device provided with.
- the electric power generated by the electric motor during the regenerative operation of the elevator can be converted from an AC power supply whose voltage generated in the DC capacitor detected by the capacitor voltage detection unit is predetermined through a rectifier circuit.
- the charge set voltage exceeds the voltage to be rectified and is lower than the operating voltage of the resistor, the electric double layer capacitor is charged securely, and the electric double layer capacitor is discharged from the electric double layer capacitor by the ff temple to operate the elevator. It can be reused for lifting.
- the charge / discharge control unit controls the charge / discharge of the charge / discharge circuit
- the output current of the rectifier circuit or the sum of the output current of the rectifier circuit and the discharge current of the charge / discharge circuit is detected.
- a discharge set current that is set in advance, and the charge / discharge circuit is controlled to discharge from the electric double layer capacitor when the detected current exceeds the predetermined discharge set current.
- a terminal voltage detection unit for newly detecting a terminal voltage of the electric double layer capacitor is provided in the configuration of the above-mentioned item (5).
- the set voltage and the full charge set voltage of the electric double layer capacitor are set, and when the voltage generated in the DC capacitor detected by the capacitor voltage detector exceeds the charge set voltage, the electric double layer capacitor is charged and discharged so as to be charged. Controls the charge of the circuit and detects the terminal voltage during charge control. When the terminal voltage of the applied electric double layer capacitor reaches the full charge set voltage, charging is stopped.
- the charging / discharging circuit is controlled so as to charge the electric double layer capacitor when the voltage generated in the DC capacitor exceeds the charging set voltage by employing the above configuration.
- the terminal voltage of the electric double layer capacitor detected by the terminal voltage detection unit reaches the full charge set voltage, charging is stopped.Therefore, the terminal voltage of the electric double layer capacitor must be maintained at or below the full charge set voltage. As a result, it is possible to protect the electric double layer capacitor from overcharging, prolong the life of the electric double layer capacitor, and prevent performance degradation.
- the elevator control device further comprises a charge / discharge current detection unit for newly detecting the charge / discharge current of the electric double layer capacitor in the configuration of (5) or (6) described above.
- the discharge control unit sets a current command value for the electric double layer capacitor, and charges the electric double layer capacitor so that the discharge current detected by the charge / discharge current detection unit matches a preset current command value.
- the charge / discharge circuit By configuring the charge / discharge circuit to perform charge / discharge control for discharging, electric double layer capacitors can be charged / discharged using a current value that is most efficient for the charge / discharge circuit. Also, since an excessive current exceeding the current command value does not flow through the electric double layer capacitor, it is possible to contribute to overcurrent protection of the electric double layer capacitor / charge / discharge circuit.
- a charge limit value and a discharge limit value which are larger than the current command value are set, and the charge / discharge current exceeds the charge limit value or the discharge limit value, and the charge / discharge current is increased.
- a configuration for controlling an electric circuit may be employed. This can also contribute to overcurrent protection of the electric double layer capacitor / charge / discharge circuit.
- the elevator control device is newly added to any of the above (5), (6), and (7), in series with the electric double layer capacitor or in series with the charge / discharge circuit. Connected, the components of the charge / discharge circuit are short-circuited, and the electric double-layer capacitor is protected from excessive short-circuit current by covering the fusing circuit that shuts off the short-circuit current discharged from the electric double-layer capacitor. It is possible to do.
- Fig. 1 is a block diagram of a conventional elevator control device.
- FIG. 2 is a configuration diagram showing an embodiment of an elevator control device according to the present invention.
- FIG. 3 is a timing chart for explaining a charge / discharge control operation by the charge / discharge control circuit shown in FIG.
- FIG. 4 is a configuration diagram showing another embodiment of the elevator control device according to the present invention.
- FIG. 5 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- FIG. 6 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- FIG. 7 is a configuration diagram obtained by adding the configurations of FIGS. 5 and 6 to the configuration of FIG.
- FIG. 8 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- FIG. 9 is a configuration diagram showing one embodiment of an elevator control device according to the present invention.
- FIG. 10 is a voltage waveform diagram illustrating a charge / discharge control operation by the charge / discharge control circuit shown in FIG.
- FIG. 11 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- FIGS. 12A and 12B are voltage and current waveform diagrams illustrating charge / discharge start control by the charge / discharge control circuit shown in FIG.
- FIG. 13 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- FIG. 14A, observation 14 FIG. B is a power and current waveform diagram illustrating charge / discharge start control by the charge / discharge control circuit shown in FIG.
- FIG. 15 is a harness diagram showing another embodiment of the elevator control device according to the present invention.
- FIG. 16 is a voltage waveform diagram for explaining the stop of charging by the charge / discharge control circuit shown in FIG.
- FIG. 17 is a voltage waveform diagram explaining the stop of discharge by the charge / discharge control circuit shown in FIG.
- FIG. 18 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- FIG. 19 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- FIG. 20 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- FIG. 2 is a configuration diagram showing one embodiment of the elevator control device according to the present invention.
- the same or equivalent parts as those in FIG. 1 are denoted by the same reference numerals and described.
- This elevator control device is provided with a drive control system for supplying required drive power as in FIG. 1, and a rope-type elevator for raising and lowering the car 14 based on the drive power from the drive control system. I have.
- This drive control system a commercial AC power supply 1, a rectifier circuit 2 for converting the AC power of the commercial AC power supply 1 into DC power, a DC capacitor 3 for smoothing the DC power converted by the rectifier circuit 2, and a DC capacitor 3
- the inverter 4 that converts the DC power smoothed by the DC power into AC power of a required frequency and supplies it to the motor 11, is connected in parallel to the DC capacitor 3, and consumes power as heat.
- the electric double-layer capacitor 21 connected in parallel to the DC capacitor 3, a voltage detection circuit 22 for detecting the terminal voltage of the electric double-layer capacitor 21, a predetermined play command and the rotation speed of the motor 11
- a drive control unit 5 for operating the resistance chopper 18 as necessary.
- the electric double layer capacitor 21 is connected in series with the DC capacitor 3 as described above, has a sufficiently large capacitance than the DC capacitor 3, and is always charged and discharged by a large current in a short time. It is a device with a function to store electrical energy that can be used. Therefore, since the capacitance of the electric double layer capacitor 21 is very large, it is possible to store almost all the regenerative power from the motor 11 side, and the DC voltage generated in the DC capacitor 3 is the electric double layer capacitor. It is dominated by the terminal voltage of 21.
- the rope-type elevator described above is composed of an electric motor 11, a rope 13 wound around a winding drum 12 connected to a rotating shaft of the electric motor 11, and a rope 13 suspended from one end ⁇ IJ of the rope 13.
- a counterweight 15 suspended from the other end of the riding basket 14 and the rope 13 is provided.
- the current Io flows to the motor 11 ⁇ inverter 4 ⁇ DC output line of the rectifier circuit 2 1 is blocked by the rectifier circuit 2 and flows to the commercial AC power supply 1 side Current, I c flows through the electric double layer capacitor, the counter 21, and the regenerative power is stored in the electric double layer capacitor 21. As a result, the terminal voltage Vc increases. At this time, the voltage detection circuit 22 detects the terminal voltage of the electric double layer capacitor 21 and sends it to the drive control unit 5.
- the drive control unit 5 sets a voltage corresponding to the rated voltage of the electric double layer capacitor 21 in advance as the operating voltage of the resistor chip 18, and detects the terminal of the electric double layer capacitor 21 detected by the voltage detection circuit 22.
- the voltage and the operating voltage of the resistance chopper 18 are compared, and when the electric double-layer capacitor 21 charges to its rated power J £, the self-arc-extinguishing element 16 forming the resistance chopper 18 is turned on. .
- the resistance chopper current Ir flows through the resistance chopper 18 due to the voltage exceeding the rated voltage of the electric double layer capacitor 21 and is consumed as heat, thereby protecting the electric double layer capacitor 21 from charging. Can be.
- the terminal voltage of the electric double-layer capacitor 21 is higher than the rectified voltage of the rectifier circuit 2 of the AC power supply 1. No current Is flows from the AC generator 1 to the electric double layer capacitor 21.
- the discharging operation is stopped. With the stop of the discharging operation, the current I S flows through the commercial AC power supply 1 ⁇ the rectifier circuit 2 ⁇ the DC output line, and the power supply is continued from the commercial AC haze source 1 to the motor 11.
- the motor 1 1 by connecting the electric double layer capacitor 21 having a large capacitance in parallel between the DC output lines of the rectifier circuit 2 and further in parallel with the DC capacitor 3, the motor 1 1 Most of the regenerative energy generated by the electric motor can be charged in the electric double-layer capacitor 21, and the charged energy can be discharged and reused during the next power operation of the electric motor 11.
- the operating voltage of the resistance chopper 18 is set to the rated voltage of the electric double layer capacitor 21.
- the resistance chopper 18 is automatically operated. Sita 21 can be protected from overcharging.
- FIG. 4 is a block diagram showing an embodiment of & of the elevator control device according to the present invention.
- the same or equivalent parts as those in FIG. 2 are denoted by the same reference numerals, and the detailed description is left to FIG.
- This embodiment has a configuration in which a switch 23 is connected in series to the electric double layer capacitor 21 in addition to the configuration shown in FIG.
- the electric double layer capacitor 21 is always connected in parallel with the DC capacitor 3, and a DC voltage is always applied.
- the drive control unit 5 controls the switch 23 inconsistently during normal operation. When not using switch 1, switch 23 is turned off.
- the electric double layer capacitor 21 when the electric double layer capacitor 21 is not used and the electric double layer capacitor 21 is not used, by turning off the switch 23, the electric double layer capacitor is obtained from the DC voltage of the DC capacitor 3. 2 L can be electrically disconnected, and the DC voltage stored in the electric double layer capacitor 21 can prevent an electric shock accident or the like from occurring.
- FIG. 5 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- the same or equivalent parts as those in FIG. 2 are denoted by the same reference numerals, and the detailed description is left to FIG.
- an initial charging circuit 26 in which a switch 24 and a resistor 25 are connected in parallel to a seismic double layer capacitor 21 is newly connected to the configuration shown in FIG. That is, the drive control unit 5 of this device sends an off control signal when power is supplied from the commercial AC power supply 1, turns off the initial charge [turns off the switch 24 of the circuit 26, and sets the resistance to the commercial AC power supply 1.
- the electric double layer capacitor 21 is connected through 25. As a result, the DC power rectified from the commercial AC power supply 1 through the rectifier circuit 2 gradually charges the electric double layer capacitor 21 with the current limited by the resistor 25.
- FIG. 6 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- the same or equivalent parts as those in FIG. 2 are denoted by the same reference numerals, and the detailed description is left to FIG.
- This embodiment has a configuration in which a current interrupting circuit 27 such as a fuse is newly connected in series with the electric double layer capacitor 21 in addition to the configuration shown in FIG.
- a current interrupting circuit 27 such as a fuse
- the current cutoff circuit 27 cuts off the current by, for example, fusing, and prevents the electric double layer capacitor 21 from flowing to the electric double layer capacitor 21. Therefore, according to the above-described embodiment, when a short-circuit fault occurs in the DC capacitor 3 inverter 4, the inrush current flowing into the electric double layer capacitor 21 is cut off, and the electric double layer capacitor 21 fails. It is possible to prevent short circuit accidents from spreading.
- FIG. 7 is a diagram for explaining still another modification of the elevator control device according to the present invention, and more specifically, is a configuration diagram in which FIGS. 5 and 6 are combined.
- This embodiment has a configuration in which a current interruption circuit 27 for interrupting a current flowing in series into the electric double layer capacitor 21 and an initial charging circuit 26 are connected.
- the electric double layer capacitor 21 is obtained from the short-circuit current due to the short-circuit fault in the surge current at the start of energization of the commercial AC power supply 1 and the DC capacitor 3 inverter 4 during normal operation.
- the electric double layer capacitor 21 can be reliably charged with the regenerative power generated by the motor 11 and thus the electric power generated by the motor 11, and the charged energy can be discharged and reused at the next power operation.
- FIG. 8 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- the DC capacitor 3 connected to the DC output line of the rectifier circuit 2 is deleted, and the function of the DC capacitor 3 is provided to the electric double layer capacitor 21. is there.
- the electric double layer capacitor 21 can sufficiently cope with high-speed charge / discharge operations, if the switching frequency of the inverter 4 is less than several kHz, the function of the voltage smoothing inherent in the DC capacitor 3 is provided. Can be substituted, and as a result, the DC capacitor 3 can be eliminated.
- the number of components and the number of components can be reduced by eliminating the DC capacitor 3.
- the transformer between the commercial AC power supply 1 and the rectifier circuit 2, f ⁇ ; and the existence of the impedance of the distribution line are taken into consideration, and the impedance component is represented as IL on the drawing.
- a driving control system for supplying required driving power and a port for raising and lowering the car 14 based on the driving power from the driving control system.
- This system is equipped with an expression elevator and a charge / discharge control system.
- This drive control system converts the AC power of the commercial AC power supply 1, the impedance of the distribution line or transformer, and the AC power of the commercial AC power supply 1 into DC power.
- Rectifier circuit 2 this adjustment 3 ⁇ 4fS
- a DC capacitor 3 for smoothing the DC power converted by the circuit 2
- an impeller 4 for converting the DC power smoothed by the DC / DC capacitor 3 into AC power of a required frequency and supplying the AC power to the motor 11
- a drive control unit 5 that controls the inverter 4 based on the speed command and the rotation speed of the electric motor 11 to output AC power having a frequency corresponding to the speed command is provided.
- the above-described charge / discharge control system includes a plurality of charge / discharge control elements 28, 28 and a plurality of charge control elements 2, such as a plurality of self-extinguishing elements that are connected and disconnected in parallel between the DC output lines of the rectifier circuit 2.
- a charge / discharge circuit 20 composed of a DC reactor 29 connected to the common connection portion of the rectifier circuit 2 and having a function of smoothing the direct power rectified by the rectifier circuit 2; an electric double layer capacitor 21; A voltage detection circuit 22; and a charge / discharge control unit 30 and S.
- the electric double layer capacitor 21 described above is connected between the DC output lines of the rectifier circuit 2 via the charging / discharging circuit 20 and, in turn, in parallel with the DC capacitor 3.
- This device has a capacity of 0 to 10,000 times and has a function of storing electrical energy that can be charged and discharged with a large current in a very short time.
- the above-described voltage detection circuit 22 detects a DC link voltage generated in the DC capacitor 3 having a voltage “” C between the DC output lines of the rectification circuit 2, and sends the detected voltage to the charge control unit 30.
- the charging / discharging control unit 30 sets a charging set voltage and a discharge constant voltage, compares a DC link voltage generated in the DC capacitor 3 detected by the voltage detection circuit 22 with the set voltage, and It has the function of charging or discharging the charge / discharge circuit 20 when the voltage exceeds the set voltage.
- the charging set voltage described above is a voltage higher than the rectification voltage of the rectifier circuit 2 of the commercial switching power source 1 and lower than the operating voltage of the resistance chopper 18 as shown in FIG.
- the set voltage is lower than the rectification voltage of the rectifier circuit 2 of the commercial AC power supply 1.
- the voltage detection circuit 22 always detects the DC link voltage generated in the DC capacitor 3 and sends it to the charge / discharge control unit 30.
- the charge control is performed on the control element 28 to charge the electric double layer capacitor 21 with the DC link voltage generated in the DC capacitor 3.
- the charge / discharge controller 30 constituting the charge / discharge circuit 20 Discharge control is performed on the DC power supply 28, and the power stored in the electric double layer capacitor 21 is discharged between the DC output lines of the rectifier circuit 2 and eventually to the DC capacitor 3.
- the voltage at the inverter input end increases due to the power generated by the motor 11, and this increased state is detected from the DC link voltage generated in the DC capacitor 3.
- the detected DC link voltage exceeds a charge set voltage that is higher than the rectified voltage by the rectifier circuit 2 and lower than the operating voltage of the resistor chopper 18, the electric double layer capacitor 21 is reliably charged.
- the power of the electric double layer capacitor 21 should be discharged and the power can be reused. Can be.
- FIG. 11 is a configuration diagram of an elevator control device according to the present invention, illustrating one example of charge / discharge start control.
- the DC link voltage generated in the DC capacitor 3 is detected by the voltage detection circuit 22 and the charge / discharge control unit 30 is operated based on the detected DC link voltage and the set voltage.
- a current detection circuit 32 for detecting the output current of the rectification circuit 2 is provided in addition to the voltage detection circuit 22 in addition to the voltage detection circuit 22, a current detection circuit 32 for detecting the output current of the rectification circuit 2 is provided in addition to the voltage detection circuit 22, a current detection circuit 32 for detecting the output current of the rectification circuit 2 is provided.
- the charge / discharge control of the charge / discharge circuit 20 is performed using the DC link voltage and the rectifier circuit output current detected by the voltage detection circuit 22 and the current detection circuit 32, respectively. More specifically, the voltage detection circuit 22 detects the DC link voltage generated in the DC capacitor 3 and sends it to the charge / discharge control unit 30.
- the current detection circuit 32 detects the output current of the rectifier circuit 2 and sends it to the charge / discharge control unit 30 in the same manner.
- the charging / discharging control section 30 is higher than the DC link voltage generated in the DC capacitor 3 detected by the voltage detecting circuit 22 and the rectified voltage of the commercial AC power supply 1 and the resistance chopper 1
- the charge / discharge circuit 30 is controlled so that the DC link voltage is charged to the electric double layer capacitor 21 when the DC link voltage exceeds the charge set voltage by comparing with the charging set voltage lower than the operating voltage of 8. .
- the charge / discharge control section 30 compares the rectifier circuit output current detected by the current detection circuit 32 with a preset discharge setting current as shown in FIG. 12B. When the rectifier circuit output current exceeds the discharge set current, the charge / discharge circuit 30 is controlled to discharge the voltage of the electric double layer capacitor 21.
- the charge / discharge control unit 30 starts discharge control for the charge / discharge circuit 20 and discharges from the electric double layer capacitor 21 to supply power. Can be effectively reused.
- FIG. 13 is a configuration diagram of an elevator control device according to the present invention for explaining another example of charge / discharge start control.
- This elevator control device is provided with a current detection circuit 33 for detecting the sum of the output current of the rectifier circuit 2 and the discharge current from the charge / discharge circuit 20 as shown in FIG. 33
- the sum current detected in 3 is sent to the charge / discharge control unit 30.
- the charge / discharge control unit 30 determines the charge control based on the DC link voltage generated in the DC capacitor 3 detected by the voltage detection circuit 22 as shown in FIG. As shown in Fig. 14B, the sum current is compared with a preset discharge set voltage, and when the sum current exceeds the discharge set voltage, the electric power stored in the electric double layer capacitor 21
- the charge / discharge circuit 30 is controlled so as to discharge. Therefore, according to such an embodiment, the impedance of distribution lines and transformers is small.
- FIG. 15 is a block diagram showing another embodiment of the elevator control device according to the present invention.
- the same or equivalent parts as those in FIG. 9 are denoted by the same reference numerals, and the description is given to FIG.
- This elevator control device has a configuration in which a voltage detection circuit 31 for detecting the terminal voltage of the electric double layer capacitor 21 is newly added to the configuration shown in FIG. That is, a first voltage detecting circuit 22 for detecting a DC link voltage generated in the DC capacitor 3 and a second voltage detecting circuit 31 for detecting a terminal voltage of the electric double layer capacitor 21 are provided to control charging and discharging.
- the part 30 is capable of detecting the terminal voltage of the electric double layer capacitor 21, so that the electric double layer capacitor 21 is controlled so as not to be overcharged and to be efficiently charged.
- the charge / discharge control unit 30 sets a charge set voltage and a discharge set voltage in the same manner as in FIG. 10, and performs charge control and charge control based on the DC link voltage generated in the DC capacitor 3 and the charge set voltage and the discharge set voltage. Perform discharge control.
- the charge / discharge control unit 30 is provided with a set voltage (see FIG. 16) at which the electric double layer capacitor 21 is fully charged without being overcharged and a set voltage (when the terminal voltage of the electric double layer capacitor 21 drops). (See Fig. 17), and the terminal voltage of the electric double layer capacitor 21 exceeds the set voltage at which the terminal is fully charged during charging control based on the DC link voltage generated in the DC capacitor 3 (see Fig. 10).
- the discharge is stopped. Perform a shutdown.
- the charge / discharge control unit 30 since the charge / discharge control unit 30 always takes in the DC link voltage generated in the DC capacitor 3 from the first voltage detection circuit 22, the DC link voltage is larger than the rectified voltage by the rectifier circuit 2. And the operating voltage of the resistance chopper 18 When the charge setting voltage exceeds the lower limit, the charge control is performed on the charge / discharge control element 28 constituting the charge / discharge circuit 20, and the DC link voltage generated in the DC capacitor 3 is changed to the electric double layer capacitor 21. To charge. However, when the electric double layer capacitor 21 is unilaterally charged during the regenerative operation, overcharging occurs, and as a result, the life of the electric double layer capacitor 21 is reduced.
- the charge / discharge control unit 30 takes in the terminal voltage of the electric double layer capacitor 21 from the second voltage detection circuit 31 during the charge control, so that the terminal voltage of the electric double layer capacitor 21 is When the voltage exceeds the set voltage for full charge, control is performed so that the charging operation of the electric double layer capacitor 21 is stopped.
- the charge / discharge control unit 30 takes in the DC link voltage generated in the DC capacitor 3 from the first voltage detection circuit 22 and performs discharge control during the discharge control. Since the terminal voltage of the electric double layer capacitor 21 is taken in, the discharge operation from the electric double layer capacitor 21 is stopped when the terminal voltage of the electric double layer capacitor 21 falls below the set voltage for voltage drop.
- the same effect as that of FIG. 2 can be obtained, and the terminal voltage of the electric double layer capacitor 21 can be maintained at or below the set voltage of the full charge.
- the terminal voltage of the electric double layer capacitor 21 can be maintained at or above the set voltage of the voltage drop, thereby protecting the electric double layer capacitor 21 from overdischarge. 1 can extend the life and prevent deterioration of performance.
- the output current value of the electric double layer capacitor 21 can be calculated, and the optimal design of the control device in consideration of the maximum current can be performed.
- FIG. 18 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- This embodiment has a configuration in which a current detection circuit 34 for detecting the charging current of the electric double layer capacitor 21 is newly provided in the configuration of FIG. 15 including the configuration of FIG.
- the current detection circuit 34 detects the charge / discharge current of the electric double layer capacitor 21 and sends the detected charge / discharge current to the charge / discharge control unit 30.
- the charge / discharge control section 30 sets a current command value in addition to the set voltage described above (see FIGS. 10, 16 and 17), and supplies a current to the electric double layer capacitor 21.
- the charge / discharge circuit 20 is controlled so that a charge current that matches the command value flows.
- the charge / discharge control section 30 Since the charge / discharge control section 30 always takes in the DC link voltage generated in the DC capacitor 3 from the first voltage detection circuit 22, this DC link voltage is higher than the rectification voltage of the rectification circuit 2, and When the charge set voltage, which is lower than the operating voltage of the resistance chopper 18, is exceeded, charge control is performed on the charge / discharge control element 28 constituting the charge / discharge circuit 20, and the DC link voltage generated at the DC capacitor 3 is reduced. The electric double layer capacitor 21 is charged.
- the charge / discharge control unit 30 takes in the charge current detected by the current detection circuit 34, compares this charge current with a preset current command value, and matches the charge current with the current command value.
- the charge / discharge circuit 20 is controlled so that
- the charge / discharge control unit 30 takes in the terminal voltage of the electric double layer capacitor 21 from the second voltage detection circuit 31 and controls the charging current during the charge control, and sets the terminal voltage to the full charge. Stop charging when the voltage is exceeded.
- the charge / discharge control unit 30 is also configured to calculate the voltage and the discharge current detected by the first and second voltage detection circuits 22 and 31 and the current detection circuit 34 during the power operation, as described above. To control the charge / discharge circuit 20.
- the charging / discharging control unit 30 includes a current detection circuit 3
- the discharge current detected in step 4 is taken in, the discharge current is compared with a preset current command value, and the charge / discharge circuit 20 is controlled so that the discharge current matches the current command value. Therefore, according to the above-described embodiment, the charge / discharge control unit 30 sets the charge / discharge current of the electric double layer capacitor 21 1 to the current command value based on the charge / discharge current detected by the current detection circuit 34. The charge / discharge control is performed so as to satisfy the following condition. Thus, charge / discharge can be performed using the most efficient current value for the electric double layer capacitor 21 2charge / discharge circuit 20. Also, since an excessive current exceeding the current command value does not flow through the electric double layer capacitor 21, it is possible to contribute to overcurrent protection of the electric double layer capacitor 21 charge / discharge circuit 20.
- the charge / discharge control unit 30 compares the charge / discharge current detected by the current detection circuit 34 with a preset current command value.
- a charge limit value and a discharge limit value that are larger than the current command value for the charge / discharge current are set in advance, and the charge / discharge control unit 30 controls the electric double layer capacitor 2 detected by the current detection circuit 34.
- Step 1 Comparing the charge current with the charge limit value in Step 1 and, when the charge current exceeds the charge limit value and attempts to increase the charge current, controls the charge / discharge circuit 20 to reduce the charge current, and
- the discharge current of the electric double layer capacitor 21 detected by the current detection circuit 34 is compared with the discharge limit value, and when the discharge current exceeds the discharge limit value and the discharge current is increased, the discharge current Control the charge / discharge circuit 20 Configuration. That is, control is performed so that the firing angle of the gate of the charge / discharge control element 28 constituting the charge / discharge circuit 20 is not increased.
- FIG. 19 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- the same or equivalent parts as those in FIG. 9 are denoted by the same reference numerals, and the detailed description is left to FIG.
- This embodiment has a configuration in which a fuse 35 is interposed between the DC reactor 29 and the electric double layer capacitor 21 having the configuration shown in FIG. That is, the fuse 35 is newly connected to the configuration shown in FIG. 9 in series with the electric double layer capacitor 21.
- the reason for providing the fuse 35 in this way is that when a short-circuit fault occurs in one or both of the charge / discharge control elements 28 constituting the charge / discharge circuit 20, the electric double layer capacitor 21 discharges. This is to protect the electric double layer capacitor 21 from excessive short-circuit current by interrupting the short-circuit current.
- the fuse 35 is connected to the configuration shown in FIG. 9, but for example, the fuse 35 may be connected to the configuration shown in FIG. 15 or FIG. .
- FIG. 20 is a configuration diagram showing still another embodiment of the elevator control device according to the present invention.
- the same or equivalent parts as those in FIG. 9 are denoted by the same reference numerals, and the detailed description is left to FIG.
- This embodiment has a configuration in which a fuse 36 is connected in series to a charge / discharge control element 28 constituting a charge / discharge circuit 20 shown in FIG.
- the reason for providing the fuse 36 in this manner is that when a short-circuit fault occurs in one or one of the charge / discharge control elements 28 constituting the charge / discharge circuit 20, the electric double layer capacitor 21 discharges. The short-circuit current is cut off, and the electric double layer capacitor 21 is protected from an excessive short-circuit current. In addition, a short-circuit current flowing into the charging / discharging circuit 20 from the DC voltage generated in the output line of the rectifier circuit 2 and the DC capacitor 3 is cut off, thereby protecting the entire device from overcurrent.
- the configuration is such that the fuse 36 is connected to the configuration shown in FIG. 9, but for example, the configuration may be such that the fuse 36 is connected to the configuration shown in FIG. 15 or FIG. .
- the present invention is not limited to the above-described embodiment, and can be implemented with various modifications without departing from the gist thereof.
- each embodiment can be implemented in combination as much as possible, and in that case, the effect of the combination can be obtained.
- each of the above embodiments includes various upper and lower stages, and various inventions can be extracted by appropriately combining a plurality of disclosed components. For example, when an invention is extracted because some constituent elements can be omitted from all the constituent elements described in the means for solving the problem, if the extracted invention is implemented, The omitted parts are appropriately supplemented by well-known conventional techniques.
- This invention can provide the elevator control device which can charge the electric power obtained at the time of regenerative operation reliably, and can be effectively reused at the time of power running operation.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2005800080683A CN1930071B (zh) | 2004-03-18 | 2005-03-17 | 升降机控制装置 |
US10/591,394 US7837011B2 (en) | 2004-03-18 | 2005-03-17 | Elevator controller |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-078383 | 2004-03-18 | ||
JP2004078382A JP4544884B2 (ja) | 2004-03-18 | 2004-03-18 | エレベータ制御装置 |
JP2004078383A JP4721647B2 (ja) | 2004-03-18 | 2004-03-18 | エレベータ制御装置 |
JP2004-078382 | 2004-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005090216A1 true WO2005090216A1 (ja) | 2005-09-29 |
Family
ID=34993576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/005454 WO2005090216A1 (ja) | 2004-03-18 | 2005-03-17 | エレベータ制御装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7837011B2 (ja) |
JP (2) | JP4544884B2 (ja) |
KR (1) | KR100828014B1 (ja) |
CN (1) | CN1930071B (ja) |
MY (1) | MY141310A (ja) |
TW (1) | TWI286121B (ja) |
WO (1) | WO2005090216A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
JP2005263408A (ja) | 2005-09-29 |
TWI286121B (en) | 2007-09-01 |
KR100828014B1 (ko) | 2008-05-08 |
MY141310A (en) | 2010-04-16 |
JP4544884B2 (ja) | 2010-09-15 |
CN1930071B (zh) | 2010-08-04 |
US7837011B2 (en) | 2010-11-23 |
US20070137945A1 (en) | 2007-06-21 |
JP4721647B2 (ja) | 2011-07-13 |
JP2005263409A (ja) | 2005-09-29 |
KR20060105775A (ko) | 2006-10-11 |
CN1930071A (zh) | 2007-03-14 |
TW200535083A (en) | 2005-11-01 |
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