JP4721843B2 - Elevator control device - Google Patents

Description

  The present invention relates to an elevator control device that stores regenerative energy in a regenerative operation of an elevator in a power storage device and effectively uses the stored energy.

  FIG. 10 is a block diagram showing a conventional elevator control apparatus. In the figure, 101 is a customer power supply which is a three-phase AC power supply, 102 is a rectifier circuit, 103 is a DC capacitor, and 104 is an inverter capable of forward / reverse conversion. These components 102 to 104 constitute a power converter. Reference numeral 105 denotes a regenerative resistance device including a switching element and a resistor for consuming regenerative energy as needed. Reference numeral 106 denotes an electric motor, and a main sheave 107 is attached to a rotating shaft of the electric motor 106. A main rope 108 is stretched around the main sheave 107. A car 109 is suspended from one end of the main rope 108, and a counterweight 110 is suspended from the other end of the main rope 108.

  In the elevator control device, a charging / discharging circuit 111 in which a plurality of self-extinguishing switching elements 111a and 111b are serially connected is connected between the DC lines P and N of the power converter. Furthermore, a serially connected DC reactor 112 and a power storage device 113 are connected to the charge / discharge circuit 111.

  Reference numeral 114 denotes a current detection device that detects a charging / discharging current to the power storage device 113, and reference numeral 115 denotes a voltage detection device that detects a DC voltage between the DC lines P and N. A charge determination unit 116 and a discharge determination unit 117 each having a deviation calculation function are connected to the output side of the voltage detection device 115. When the DC voltage between the DC lines P and N detected by the voltage detection device 115 exceeds the charging voltage command value of the charging voltage command output unit 118, the charging determination unit 116 turns on the charging switch 119 and turns on the DC voltage. And the voltage deviation between the charging voltage command value is output. When the DC voltage between the DC lines P and N detected by the voltage detection device 115 is lower than the discharge voltage command value of the discharge voltage command output unit 120, the discharge determination unit 117 turns on the discharge switch 121 to The voltage deviation between the voltage and the discharge voltage command value is output. Reference numerals 122 and 123 denote a charge voltage control unit and a discharge voltage control unit that convert and output a positive charge current command and a negative discharge current command corresponding to the voltage deviation, respectively. A deviation calculation element 124 outputs a current command value. The deviation calculation element 124 represents a current deviation between a current detected by the current detection device 114 and a positive charge current command or a negative discharge current command output from the charge voltage control unit 122 or the discharge voltage control unit 123 as a current command value. Have the ability to output as. A charge / discharge current control unit 125 executes charge control and discharge control of the charge / discharge circuit 111 based on the current command value.

  By the way, the elevator control apparatus as described above performs the regenerative operation and the power running operation of the electric motor 106 and eventually the elevator according to a predetermined operation pattern. During the regenerative operation of the electric motor 106, the charge / discharge current control unit 125 controls the charge / discharge circuit 111 based on the charge current command output from the charge voltage control unit 122. Thereby, the regenerative energy generated by the electric motor 106 is stored in the power storage device 113. Further, during the power running operation of the electric motor 106, the charge / discharge current control unit 125 controls the discharge of the charge / discharge circuit 112 based on the discharge current command output from the discharge voltage control unit 123, and the stored energy stored in the power storage device 113 is obtained. The electric power is reused by discharging between the DC lines P and N. Further, the power stored in the power storage device 113 is used as a backup power source when the customer power source 1 is powered off.

  FIG. 11 is an operation waveform diagram of the elevator control apparatus shown in FIG. FIG. 4A is an operation waveform diagram when the DC voltage between the DC lines P and N is normal, and FIG. 4B is an operation when the DC voltage between the DC lines P and N varies with the power supply fluctuation of the customer power supply 101. It is a waveform diagram. The power fluctuation of the customer power supply 101 is caused by a change in capacity or a seasonal change due to a large number of load conditions connected to the customer power supply 101. In the figure, the voltage reference value Vref means a constant voltage value determined from a DC voltage between the DC lines P and N, for example, a range of 270 (V) to 290 (V). Now, when the customer power supply 101 is 200 (V), when the customer power supply voltage 200 (V) is rectified by the rectifier circuit 102, the DC voltage of 200 (V) × 1.35 times = 270 (V) Voltage detection waveform S2. Further, in consideration of retention of the DC voltage by ripple removal of the DC voltage output from the rectifier circuit 102 and voltage fluctuation of the customer power supply 101, the DC capacitor 103 has a DC voltage of 270 (V) to 290 (V). Accumulated. That is, the detected voltage waveform S2 of the DC voltage between the DC lines P and N appears as a substantially constant voltage value, but the ascending operation and the descending operation by the elevator operation pattern S1 are temporally compressed and connected. A sinusoidal voltage detection waveform S2.

  Therefore, in the elevator control device as described above, the change in the voltage detection waveform S2 between the DC lines P and N detected by the voltage detection device 115 during the ascending operation and the descending operation of the elevator according to the operation pattern S1, is used. The charge / discharge current control unit 125 performs charge / discharge control of the charge / discharge circuit 112.

  By the way, when the DC voltage between the DC lines P and N is in a normal voltage state as shown in FIG. 11A, the voltage reference value Vref of the predetermined DC voltage and the charging voltage command of the charging voltage command output unit 118 are set. The deviation Vde of the value, the voltage reference value Vref, and the deviation Vde of the discharge voltage command value of the discharge voltage command output unit 120 can be set to substantially the same magnitude. As a result, the charging switch 119 and the discharging switch 121 can be turned on with substantially the same charging time and discharging time from the charging determination unit 116 and the discharge determination unit 117. As a result, the charge current command Icref converted and output from the charge voltage control unit 122 and the discharge current command Idref converted and output from the discharge voltage control unit 123 become positive and negative targets.

  However, as described above, the customer power source 101 fluctuates due to a change in capacity or seasonal change, and as shown in FIG. 11B, the voltage reference value of the voltage detection waveform S2 of the DC voltage is a predetermined voltage reference value Vref. The charge voltage command value of the charge voltage command output unit 118 and the discharge voltage command value of the discharge voltage command output unit 120 are kept constant, so that the charge determination unit 116 determines that charging is a priority. The charge time and the discharge time determined to be discharge priority by the discharge determination unit 117 are extremely different. As a result, the charge current command Icref and the discharge current command Idref output from the charge voltage control unit 122 and the discharge voltage control unit 123 are not positive or negative.

  That is, when the actual voltage reference value of the DC voltage between the DC lines P and N becomes higher than the voltage reference value Vref, the charging current command Icref increases, and conversely, the discharging current command Idref decreases. Therefore, a bias occurs between charging and discharging, and charging and discharging cannot be balanced. Therefore, the charge / discharge efficiency for the power storage device 113 is deteriorated, and there is a problem that the power stored in the power storage device 113 cannot be used effectively.

  The present invention has been made in view of the above circumstances, and eliminates the bias between the charge current command and the discharge current command at the time of charging / discharging in spite of fluctuations in the customer power supply, and effectively uses the power stored in the power storage device. An object of the present invention is to provide an elevator control device that can be used.

(1) In order to solve the above-mentioned problem, the present invention is connected between a rectifier circuit that converts an AC voltage of a customer power source into a DC voltage, and a DC line on the output side of the rectifier circuit. A DC capacitor that smoothes the ripple of voltage, an inverter that converts this smoothed DC voltage into an AC voltage of variable voltage and variable frequency, and an output that is driven by the AC voltage output from this inverter. A hoisting machine that operates in an up-and-down direction, inverter control means that controls the inverter according to a predetermined operation pattern, and a generator that is connected between the DC lines via a charge / discharge circuit and that constitutes the hoisting machine during regenerative operation In an elevator control device provided with a power storage device that stores regenerative energy to be discharged and discharges energy stored during powering operation between the DC lines, A voltage detection means for detecting a DC voltage between the DC lines, a charge voltage command output means for outputting a charge voltage command value serving as a threshold for determining charging start, and a discharge voltage command serving as a threshold for determining discharge start Discharge voltage command output means for outputting a value, and when the DC voltage detected by the voltage detection means exceeds the charge voltage command value output from the charge voltage command output means, it is determined that charging is prioritized, and the DC Charge priority control means for outputting a charge current command over a period in which the voltage exceeds, and discharging when the DC voltage detected by the voltage detection means falls below the discharge voltage command value output from the discharge voltage command output means It is detected by the discharge priority control means for determining the priority and outputting the discharge current command over the period when the DC voltage is lowered, and the voltage detection means accompanying the fluctuation of the customer power supply. Bias setting that additionally sets a predetermined bias voltage to the voltage command output means when the voltage reference value of the DC voltage to be generated is changed, and generates the positive and negative charge current command and the discharge current command in a target waveform without bias And a current deviation between a charge current command output from the charge priority control means and a charge current to the power storage device, or a discharge current command output from the discharge priority control means and a discharge current from the power storage device. Charge / discharge control means for charge / discharge control of the charge / discharge circuit based on a current command value corresponding to the current deviation.

  According to the present invention, when the voltage reference value of the DC voltage detected by the voltage detecting means changes due to the fluctuation of the customer power supply, a predetermined bias voltage is applied to the voltage command output means. A bias voltage set in the bias setting means is additionally set to the set charge / discharge voltage command value. The DC voltage detected by the voltage detection means and the deviation of the charge voltage command value output from the charge voltage command output means, and the DC voltage detected by the voltage detection means and the discharge voltage output from the discharge voltage command output means Make the deviation of the command value equal. This eliminates the bias between the charge current command output from the charge priority control means and the discharge current command output from the discharge priority control means, and increases the charge / discharge efficiency for the power storage device, thereby increasing the power stored in the power storage device. Make effective use of

  The charge priority control means described above compares the DC voltage detected by the voltage detection means with the charge voltage command value output from the charge voltage command output means, and the DC voltage exceeds the charge voltage command value. The charging judgment means for judging the charging and outputting the voltage deviation between the DC voltage and the charging voltage command value, and the positive charging current command according to the voltage deviation output from the charging judgment means. It can be set as the structure which provided the charging voltage control means to convert and output.

  Thereby, even if the voltage reference value of the voltage detection waveform of the DC voltage between P and N detected by the voltage detection means becomes larger than the predetermined voltage reference value, the charge voltage command value is increased by the charge bias voltage. Thus, it is possible to cancel the influence of the fluctuation of the voltage reference value and output the charge priority voltage deviation corresponding to the normal DC voltage from the charge determination means.

  Further, as the discharge priority control means described above, the DC voltage detected by the voltage detection means is compared with the discharge voltage command value output from the discharge voltage command output means, and the DC voltage is more than the discharge voltage command value. A discharge determination means for determining a discharge when the voltage drops and outputting a voltage deviation between the DC voltage and the discharge voltage command value; and the negative charge current corresponding to the voltage deviation output from the discharge determination means A discharge voltage control means for converting to a command and outputting the command can be provided.

  Thereby, even if the voltage reference value of the voltage detection waveform of the DC voltage between P and N detected by the voltage detection means becomes larger than the predetermined voltage reference value, the discharge voltage command value is increased by the discharge bias voltage. Thus, it is possible to cancel the influence of the fluctuation of the voltage reference value and output the discharge priority voltage deviation corresponding to the normal DC voltage from the discharge determination means.

(2) Moreover, this invention is connected between the rectifier circuit which converts the alternating voltage of a customer power supply into a direct current voltage, and the direct current line of the output side of this rectifier circuit, and smoothes the ripple of the converted direct current voltage A DC capacitor, an inverter that converts the smoothed DC voltage into an AC voltage having a variable voltage and a variable frequency, and a hoisting machine that drives using the AC voltage output from the inverter to raise and lower the car And an inverter control means for controlling the inverter according to a predetermined operation pattern, and a regenerative energy generated by an electric motor connected to the DC line via a charge / discharge circuit and constituting the hoisting machine during regenerative operation. And an elevator control device provided with a power storage device that discharges energy stored during power running between the DC lines. A voltage detection means for detecting a voltage, a first reference voltage setting means for setting a first voltage reference value serving as a reference for a DC voltage detected by the voltage detection means, and a change in the customer power supply A charging bias voltage corresponding to a change in the reference voltage value of the DC voltage detected by the voltage detection means is set, and the voltage between the DC voltage and the first voltage reference value when the reference voltage value of the DC voltage changes A charge bias setting means for adding and outputting the charge bias voltage as a deviation; and a discharge corresponding to a change in a reference voltage value of a DC voltage detected by the voltage detection means in accordance with a change in the customer power supply A discharge bias setting means for setting a bias voltage, and subtracting the discharge bias voltage to output a voltage deviation between the DC voltage and the first voltage reference value when the reference voltage value of the DC voltage varies; A second reference voltage setting means for setting a second voltage reference value serving as a reference for the DC voltage; and a voltage reference value of the second reference voltage setting means and the charging bias setting means, which are given in addition. A charge voltage command output means for taking in a voltage added to the generated voltage and outputting it as a charge voltage command value; and a voltage reference value of the second reference voltage setting means and the discharge bias setting means for subtractive output from the output voltage A discharge voltage command output means for taking in a voltage added to the output voltage and outputting it as a discharge voltage command value; and a DC voltage detected by the voltage detection means exceeds a charge voltage command value output from the charge voltage command output means. Charging priority control means for outputting a charging current command over a period when the DC voltage exceeds, and the DC voltage detected by the voltage detecting means is discharged. A discharge priority control means for determining discharge priority when the discharge voltage command value output from the voltage command output means is lower than the discharge voltage command value, and outputting a discharge current command over a period during which the DC voltage is reduced; and the charge priority control Current command corresponding to the current deviation between the charge current command output from the means and the charge current to the power storage device or the current deviation between the discharge current command output from the discharge priority control means and the discharge current from the power storage device It is an elevator control device provided with charge / discharge control means for charge / discharge control of the charge / discharge circuit based on the value.

  The present invention is configured as described above, so that when the voltage reference value of the DC voltage detected by the voltage detecting means varies, the charging bias voltage is added to the voltage deviation between the DC voltage and the first voltage reference value. Then, the voltage reference value of the second reference voltage setting means is further added to this added voltage to obtain the charging voltage command value of the charging voltage command output means, so that the voltage detection means in the charging priority control means detects it. The difference between the DC voltage and the charging voltage command value is clarified, and charging and charging can be accurately determined.

  Further, after the discharge bias voltage is subtracted from the voltage deviation between the direct current voltage and the first voltage reference value when the voltage reference value of the direct current voltage detected by the voltage detection means varies, By adding the voltage reference value of the reference voltage setting means of 2 to obtain the discharge voltage command value of the discharge voltage command output means, the DC voltage detected by the voltage detection means in the discharge priority control means and the discharge voltage command value It becomes possible to clarify the difference and accurately determine the discharge priority.

  Further, by providing a charging bias voltage and a discharging bias voltage when the voltage reference value of the DC voltage varies, a deviation between the DC voltage detected by the voltage detecting means and the charging voltage command value output from the charging voltage command output means, The DC voltage detected by the voltage detection means and the deviation of the discharge voltage command value output from the discharge voltage command output means can be made equal. This eliminates the bias between the charge current command output from the charge priority control means and the discharge current command output from the discharge priority control means, and increases the charge / discharge efficiency for the power storage device, thereby increasing the power stored in the power storage device. Can be used effectively.

  Furthermore, the elevator control apparatus according to the present invention is newly added to the configuration of the item (2), and the voltage deviation between the DC voltage detected by the voltage detection means and the reference voltage value of the first reference voltage setting means. The output line is bifurcated, provided on one of the charge output lines, and outputs a voltage deviation obtained by limiting the voltage deviation with a predetermined charge limit voltage and outputs a voltage abnormality signal, and the output A discharge output line, which is the other of the lines, limits the voltage deviation with a predetermined discharge limit voltage, outputs a voltage abnormality signal, and a voltage abnormality signal output from the limit means. Based on this, a voltage abnormality detecting means for notifying a predetermined portion of the abnormality is provided.

  By configuring the present invention as described above, for example, when the DC voltage detected by the voltage detecting means becomes abnormal, the charge / discharge operation is protected by limiting with a limit voltage, and an abnormal state is notified. This enables early recovery.

(3) Further, the elevator control device according to the present invention is configured to apply the DC voltage detected by the filter device or the voltage detection unit a plurality of times to cut the high-frequency component voltage that causes an error included in the DC voltage detected by the voltage detection unit. By providing an addition averaging device that takes in and calculates and outputs an addition average value, it is possible to limit the detection voltage error by the voltage detection means and to ensure the stability of the charge / discharge control.

  According to the present invention, it is possible to eliminate the bias between the charging current command and the discharging current command at the time of charging / discharging in spite of fluctuations in the customer power supply, and to effectively use the power stored in the power storage device. Equipment can be provided.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram showing a first embodiment of an elevator control apparatus according to the present invention.
In FIG. 1, 1 is a customer power source that is a three-phase AC power source, 2 is a rectifier circuit that converts AC power supplied from the customer power source 1 into DC power, and 3 is a ripple of DC power converted by the rectifier circuit 2. A DC capacitor 4 for smoothing the voltage is an inverter capable of forward / reverse conversion for converting DC power held in the DC capacitor 3 into AC power of variable voltage and variable frequency. These components 2-4 comprise a power converter device. Furthermore, the power converter is provided with inverter control means (not shown, which is the same in the following embodiments) for controlling the inverter 4 according to a predetermined operation pattern. Reference numeral 5 denotes a regenerative resistance device including a switching element and a resistor for consuming regenerative energy as required.

  Reference numeral 6 denotes an electric motor that is driven to rotate by receiving AC power of variable voltage and variable frequency output from the inverter 4. A main sheave 7 is attached to a rotating shaft of the electric motor 6. A main rope 8 is stretched over the main sheave 7, a car 9 is suspended at one end of the main rope 8, and a counterweight 10 is suspended at the other end of the main rope 8.

  A charge / discharge circuit 11 is connected between the DC lines P and N of the power converter. In the charge / discharge circuit 11, a plurality of charge / discharge control switching elements 11a, 11b capable of self-extinguishing are serially connected. The positive electrode of the power storage device 13 is connected to the common connection of the switching elements 11a and 11b for charge / discharge control via a DC reactor 12 that smoothes the ripple of DC power appearing between the DC lines P and N. The negative electrode of the device 13 is connected to the DC line N. The power storage device 13 uses a secondary battery or the like having a function that can be repeatedly charged and discharged, stores power energy generated by the electric motor 6 during regenerative operation, and stores power energy stored in the power storage device 13 during power running operation. Discharge between DC lines P and N. In addition, the power storage device 13 is used as a backup power source in the event of a power failure of the customer power source 1.

  14 is a current detection device for detecting a charge / discharge current flowing between the charge / discharge circuit 11 and the power storage device 13, 15 is a holding voltage of the DC capacitor 3 or a DC voltage between the DC lines P and N of the power converter (main circuit DC). It is a voltage detection device as voltage detection means for detecting (voltage). On the output side of the voltage detection device 15, there are a charge bias setting unit (charge bias setting unit) 16, a discharge bias setting unit (discharge bias setting unit) 17, and a charge determination unit (charge determination unit) having a deviation calculation function. ) 18 and a discharge determination unit (discharge determination means) 19 having a deviation calculation function are connected to each other.

  The charging bias setting unit 16 is set with a voltage reference value for a predetermined DC voltage and a charging bias voltage corresponding to the past DC voltage fluctuation between the DC lines P and N due to power fluctuation of the customer power supply 1. Yes. When the actual reference voltage value obtained from the DC voltage detected by the voltage detection device 15 is larger than a preset voltage reference value, that is, when the DC voltage reference voltage value fluctuates, the charging bias setting unit 16 The charging bias voltage is additionally set in the charging voltage command output unit 20.

  The discharge bias setting unit 17 is set with a voltage reference value for a predetermined DC voltage and a discharge bias voltage corresponding to a past DC voltage fluctuation between the DC lines P and N accompanying a power fluctuation of the customer power supply 1. . When the actual reference voltage value obtained from the DC voltage detected by the voltage detection device 15 becomes larger than a preset voltage reference value, that is, when the DC voltage reference voltage value fluctuates, the discharge bias setting unit 17 The discharge bias voltage is additionally set in the discharge voltage command output unit 21. The charge bias setting unit 16 and the discharge bias setting unit 17 are provided for each charge and discharge. For example, the charge / discharge bias voltage is set in the charge voltage command output unit 20 and the discharge voltage command output unit 21 from one bias setting unit. It may be configured to.

  The charging voltage command output unit 20 sends a preset charging voltage command value to the charging determination unit 18. When the charging bias voltage is input from the charging bias setting unit 17, the charging voltage command value + charging bias value The charge voltage command value consisting of is sent to the charge determination unit 18. The discharge voltage command output unit 21 sends a preset discharge voltage command value to the discharge determination unit 19, but when the discharge bias voltage is input from the discharge bias setting unit 18, the discharge voltage command value + discharge bias value. The discharge voltage command value consisting of is sent to the discharge determination unit 19.

  When the DC voltage detected by the voltage detector 15 exceeds the charging voltage command value, the charging determination unit 18 determines that charging is prioritized, closes the charging switch 22, and sets the voltage between the DC voltage and the charging voltage command value. The deviation is sent to the charge voltage control unit (charge voltage control means) 23. The charging voltage control unit 23 converts the current based on the charging voltage deviation and outputs a charging current command.

  When the DC voltage detected by the voltage detector 15 is lower than the discharge voltage command value, the discharge determination unit 19 determines that the discharge is prioritized, closes the discharge switch 24, and determines the DC voltage and the discharge voltage command value. Is sent to the discharge voltage control unit (discharge voltage control means) 25. The discharge voltage control unit 25 converts the current based on the discharge voltage deviation and outputs a discharge current command. The charge determination unit 18 and the charge voltage control unit 23 constitute charge priority control means. Moreover, the discharge determination part 19 and the discharge voltage control part 25 comprise a discharge priority control means. The same applies to the following embodiments.

  26 is a deviation calculation element. The deviation calculating element 26 outputs a charging current command value corresponding to the deviation between the charging current detected by the current detection device 14 and the charging current command output from the charging voltage control unit 23. Further, the deviation calculating element 26 outputs a discharge current command value corresponding to the deviation between the discharge current detected by the current detection device 14 and the discharge current command output from the discharge voltage control unit 25.

  27 is a charge / discharge current control unit (charge / discharge current control) that controls the charge / discharge circuit 11 so that the charge current or the discharge current becomes the charge current or the discharge current according to the charge current command value or the discharge current command value that is the output of the deviation calculating element 26. Means).

Next, the operation of the elevator control apparatus as described above will be described with reference to FIG.
Now, when the elevator is operated according to the predetermined operation pattern S1, the voltage detection device 15 detects the DC voltage of the voltage detection waveform S2 as shown in FIG. 2 from between the DC lines P and N constituting the power converter. However, the voltage detection waveform S2 is a sinusoidal voltage detection waveform S2 because the ascending operation and the descending operation by the operation pattern S1 are temporally compressed and connected.

  By the way, when the power supply fluctuation of the customer power supply 1 occurs, as is apparent from the voltage detection waveform S2 of the DC voltage detected by the voltage detection device 15, the actual voltage reference value of the DC voltage is a predetermined voltage reference value. It changes in an increased state as a whole than Vref. That is, the DC voltage fluctuates with the power fluctuation of the customer power supply 1.

  Therefore, the voltage detection waveform S2 of the DC voltage detected by the voltage detection device 15 is sent to the charge bias setting unit 16, the discharge bias setting unit 17, the charge determination unit 18, and the discharge determination unit 19, respectively.

  The charging bias setting unit 16 and the discharging bias setting unit 17 include a charging bias value corresponding to a past DC voltage fluctuation value between the DC lines P and N accompanying a power fluctuation of the customer power supply 1 in addition to the voltage reference value Vref. Vcb and discharge bias value Vdb are set.

  Here, the charging bias setting unit 16 obtains the actual voltage reference value from the voltage detection waveform S2 of the DC voltage, and then when the voltage reference value exceeds a predetermined voltage reference value Vref, that is, the actual voltage reference. When the value is always larger than the voltage reference value Vref, the already set charging bias voltage Vcb is taken out and added to the charging voltage command output unit 20 in addition. Similarly, the discharge bias setting unit 17 obtains the actual voltage reference value from the voltage detection waveform S2 of the DC voltage, and then when the voltage reference value exceeds the voltage reference value Vref, that is, the actual voltage reference value is When it is always larger than the voltage reference value Vref, the discharge bias value Vdb that has already been set is taken out and added to the discharge voltage command output unit 21 in addition. As a result, when the DC voltage between the DC lines P and N due to the power supply fluctuation of the customer power supply 1 fluctuates, the charging voltage command value Vc with bias is sent from the charging voltage command output unit 20 to the charging determination unit 18. On the other hand, the discharge voltage command output unit 21 sends a biased discharge voltage command value Vd to the discharge determination unit 19.

  Here, the charging determination unit 18 compares the voltage detection waveform S2 of the DC voltage detected by the voltage detection device 15 with the biased charging voltage command value Vc output from the charging voltage command output unit 20, and determines the DC voltage. When the voltage detection waveform S2 exceeds the charging voltage command value Vc, it is determined that charging is prioritized, and the charging switch 22 is turned on. That is, the on-time of the charging switch 22 is shorter than when the customer power supply 1 is normal.

  On the other hand, the discharge determination unit 19 compares the voltage detection waveform S2 of the DC voltage detected by the voltage detection device 15 with the biased discharge voltage command value Vd output from the discharge voltage command output unit 21, and determines the voltage of the DC voltage. When the detection waveform S1 falls below the discharge voltage command value Vd, it is determined that discharge is given priority, and the discharge switch 24 is turned on. In the case of discharge, the on-time of the discharge switch 24 becomes longer than when the power supply of the customer power supply 1 is normal. Therefore, the on time of the charging switch 22 is equal to the on time of the discharging switch 24.

  Then, the voltage deviation Vde as shown in FIG. 2 is output from the charge determination unit 18 and the discharge determination unit 19, the voltage deviation Vde at the time of charge priority is supplied to the charge voltage control unit 23, and the voltage deviation at the time of discharge priority. Vde is supplied to the discharge voltage control unit 25. The charging voltage control unit 23 converts the charging current command Icref according to the voltage deviation Vde when charging is prioritized and sends it to the deviation calculating element 26. Further, the discharge voltage control unit 24 converts the discharge current command Idref according to the voltage deviation Vde at the time of discharge priority and sends it to the deviation calculation element 26. That is, the charge current command Icref corresponding to the voltage deviation Vde at the time of charge priority and the discharge current command Idref corresponding to the voltage deviation Vde at the time of discharge priority are targets. The charging current command Icref and the discharging current command Idref are symmetric waveforms with no bias.

  Then, the charge / discharge current control unit 27 creates a charge pulse and a discharge pulse at a timing when the current command value Iref corresponding to the charge current command Icref and the discharge current command Idref exceeds a predetermined threshold, for example. The circuit 11 is charged and discharged.

  According to the embodiment as described above, the charging bias setting unit 16 responds to the fluctuation of the actual voltage reference value of the voltage detection waveform S2 of the DC voltage appearing between the DC lines P and N accompanying the voltage fluctuation of the customer power supply 1. In addition, the charging bias voltage Vcb and the discharging bias voltage Vdb are additionally input to the charging voltage command value output unit 20 and the discharging voltage command value output unit 21 according to the fluctuation of the voltage reference value Vref set in the discharging bias setting unit 17. To do. As a result, the charging voltage command value output unit 20 sets the biased charging voltage command value Vc obtained by increasing the voltage corresponding to the variation of the voltage reference value Vref in the charging determination unit 18. Then, the charging determination unit 18 compares the charging voltage command value Vc that is higher than the charging voltage command value by a bias with the DC voltage detected by the voltage detection device 15, and determines charging priority. On the other hand, the discharge determination unit 17 compares the biased discharge voltage command value Vc obtained by increasing the voltage corresponding to the variation of the voltage reference value, and determines discharge priority. As a result, the charge determination unit 18 and the discharge determination unit 19 can extract a charge priority signal and a discharge priority signal having the same charge priority time and discharge priority time.

  Therefore, if the charge determination unit 18 and the discharge determination unit 19 turn on the charge switch 22 and the discharge switch 24 based on the charge priority signal and the discharge priority signal, respectively, the voltage deviation between the DC voltage and the biased charge voltage command value is obtained. The voltage deviation Vde between Vde and the DC voltage and the biased discharge voltage command value can be made equal. Then, if the charge voltage control unit 23 and the discharge voltage control unit 25 respectively convert and output the charge current command Icref and the discharge current command Idref according to the voltage deviation Vde and output them, the charge current command Icref and the discharge are symmetrical with no bias. The current command Idref can be taken out.

  Thereby, the charging / discharging efficiency with respect to the electrical storage apparatus 13 can be improved, and the electric power stored in the electrical storage apparatus 13 can be utilized effectively.

(Second Embodiment)
FIG. 3 is a block diagram showing a second embodiment of the elevator control apparatus according to the present invention. In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

  This embodiment has a configuration substantially similar to that shown in FIG. A particularly different part is that a filter device 31 such as a low-pass filter is provided on the output side of the voltage detection device 15. Therefore, FIG. 3 has the same configuration as FIG. 1 except for the filter device 31.

  The filter device 31 is generated from the equipment of the control device of the present invention including the inverter 4 by cutting off the high-frequency component voltage superimposed on the DC voltage between the DC lines P and N detected by the voltage detection device 15. It has a function to eliminate error factors caused by noise and other external noise. That is, the filter device 31 cuts off the high-frequency component voltage that causes an error, and passes only the DC voltage appearing between the DC lines P and N detected by the voltage detection device 15. This configuration is sent to the bias setting unit 17, the charge determination unit 18, and the discharge determination unit 19.

  According to this embodiment, the filter device 31 is provided on the output side of the voltage detection device 15, and the high frequency component voltage superimposed on the DC voltage appearing between the DC lines P and N is cut off to remove the influence of the error. Therefore, it is possible to extract only the DC voltage that is truly accompanied by the variation of the voltage reference value Vref. Then, based on the DC voltage accompanied by the variation, the charge determination unit 18 and the discharge determination unit 19 correspond to the charge bias value and the discharge bias value corresponding to the variation voltage, respectively. Therefore, even if the high frequency component signal is superimposed on the voltage detection waveform S2 of the DC voltage between the DC lines P and N, the charging voltage command Icref and the charging current command Icref are equalized from the charging voltage control unit 23 and the discharging voltage control unit 25. The discharge current command Idref can be taken out. Therefore, in the elevator control device according to this embodiment, the charge / discharge current control unit 27 is charged / removed by removing the error factor caused by noise generated from the equipment of the control device of the present invention including the inverter 4 by the filter device 31. Charge control and discharge control can be performed equally for the discharge circuit 11, charge / discharge efficiency for the power storage device 13 can be improved, and power stored in the power storage device 13 can be effectively utilized.

(Third embodiment)
FIG. 4 is a block diagram showing a third embodiment of the elevator control apparatus according to the present invention.
In this embodiment, an addition averaging device 41 is connected to the output side of the voltage detection device 15 instead of the filter device 31. The addition averaging device 41 takes in N DC voltages between the DC lines P and N output from the voltage detection device 15, performs an averaging operation, and takes out the averaged DC voltage. Then, the averaging device 41 sends the averaged DC voltage to the above-described charge bias setting unit 16, discharge bias setting unit 17, charge determination unit 18, and discharge determination unit 19. Other configurations are the same as those in FIG.

In such an elevator control device, the averaging device 41 takes in N DC voltages between the DC lines P and N detected by the voltage detection device 15 and then adds these N DC voltages. Then, the averaging device 41 takes out the averaged DC voltage by dividing the addition voltage of the N DC voltages by N. Specifically, as shown in FIG. 5, the averaging device 41 takes in N DC voltages between the DC lines P and N detected by the voltage detector 15 while the elevator is stopped, and then An addition average value VdAVE is obtained by an arithmetic expression. Now, assuming that the DC voltages taken from the voltage detector 15 are Vd (1),..., Vd (N), the addition average value VdAVE is
VdAVE = {Vd (1) + Vd (2) +..., Vd (N)} / N
It becomes.

  Then, the addition average value VdAVE obtained based on the above equation is sent to the charge bias setting unit 16, the discharge bias setting unit 17, the charge determination unit 18, and the discharge determination unit 19. The operations of the charge bias setting unit 16, the discharge bias setting unit 17, the charge determination unit 18, and the discharge determination unit 19 are as described above.

  According to such an embodiment, the addition average value VdAVE, which is the output of the addition averaging device 41, is a DC voltage appearing between the DC lines P and N, so that the individual DC voltage detected by the voltage detection device 15 is obtained. Even when an error is included, the detection error included in the DC voltage is taken out as a DC voltage in a totally limited state, and the charge bias setting unit 16, the discharge bias setting unit 17, the charge determination unit 18, and the discharge determination unit 19 are extracted. Can be sent to. As a result, by limiting the detection error, the charge bias setting unit 16 and the discharge bias setting unit 17 accurately detect the fluctuation of the voltage reference value of the DC voltage with respect to the voltage reference value Vref, and correspond to the fluctuation voltage. The charge bias value and the discharge bias value to be added can be additionally provided to the corresponding charge voltage command output unit 20 and discharge voltage command output unit 21, respectively. Therefore, the charge current command Icref and the discharge current command Idref that are not biased and can be extracted from the charge voltage control unit 23 and the discharge voltage control unit 25 can be extracted. In this control apparatus, the charge / discharge current control unit 27 performs charge / discharge control on the charge / discharge circuit 11 using the uniform charge current command Icref and discharge current command Idref, so that charge / discharge is performed as compared with the conventional case. The efficiency can be increased, and the power stored in the power storage device 13 can be used effectively.

(Fourth embodiment)
FIG. 6 is a block diagram showing a fourth embodiment of the elevator control apparatus according to the present invention. In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
A different part of this embodiment is set on the output side of the voltage detection device 15 as a DC voltage detected by the voltage detection device 15 and a first reference voltage setting unit (first reference voltage setting means) 61a. Are connected by a deviation calculating element 60 that extracts a voltage deviation from the voltage reference value Vref. Accordingly, the deviation calculating element 60 is configured such that the voltage reference value of the DC voltage detected by the voltage detection device 15 and the voltage voltage value of the first reference voltage setting unit 61a are normal when the customer power supply 1 is not accompanied by voltage fluctuation. Since they are equal, a zero voltage deviation is output. This means that, when the voltage reference value of the DC voltage detected by the voltage detection device 15 fluctuates, the deviation calculation element 60 can extract a voltage deviation corresponding to the fluctuation.

  Further, the output terminal of the deviation calculation element 60 is branched into two, and deviation calculation elements 62 and 63 are connected to the respective branch lines. A corresponding charge bias setting unit 16 and discharge bias setting unit 17 are connected to each of the deviation calculation elements 62 and 63. The charging bias setting unit 16 is set with a voltage reference value for a predetermined DC voltage and a charging bias voltage corresponding to a past DC voltage fluctuation between the DC lines P and N accompanying a power fluctuation of the customer power supply 1. . When the actual reference voltage value obtained from the DC voltage detected by the voltage detection device 15 is larger than a preset voltage reference value, that is, when the DC voltage reference voltage value fluctuates, the charging bias setting unit 16 The deviation calculating element 62 has a function of applying a charging bias voltage. The discharge bias setting unit 17 has a function similar to that of the charge bias setting unit 16 and has a function of applying a discharge bias voltage to the deviation calculation element 63 when the reference voltage value of the DC voltage varies.

  Further, addition calculation elements 64 and 65 are individually connected to the output sides of the deviation calculation elements 62 and 63, respectively, and these addition calculation elements 64 and 65 are respectively set in the second reference voltage setting unit 61b. A voltage reference value Vref is applied. The charging voltage command output unit 20 is connected to the output side of the addition calculation element 64, and the discharge voltage command output unit 21 is connected to the output side of the addition calculation element 65.

  In such an elevator control device, the charging voltage command output unit 20 adds the charging bias voltage of the charging bias setting unit 16 to the differential voltage between the DC voltage of the voltage detection device 15 and the voltage reference value of the reference voltage setting unit 61a. The voltage reference value of the second reference voltage setting unit 61b is added to this added voltage to obtain the charging voltage command value Vc of the charging voltage command output unit 20, whereby the voltage reference value Vref and the charging voltage command value Vc are The difference is clarified and supplied to the charge determination unit 18 having a deviation calculation function.

  On the other hand, the discharge voltage command output unit 21 subtracts the discharge bias voltage of the discharge bias setting unit 17 from the differential voltage between the DC voltage of the voltage detection device 15 and the voltage reference value of the reference voltage setting unit 61a, 2 is added to obtain the discharge voltage command value Vd of the discharge voltage command output unit 21, thereby clarifying the difference between the reference pressure value Vref and the discharge voltage command value Vd. It supplies to the discharge judgment part 19 with a calculation function.

  The charge determination unit 18 compares the DC voltage detected by the voltage detection device 15 with the charge voltage command value Vc of the charge voltage command output unit 20, and the DC voltage of the voltage detection device 15 is larger than the charge voltage command value Vc. When it becomes, it is determined that charging is given priority. When the charging determination unit 18 determines that charging is prioritized, the charging switch 22 is turned on, and the voltage deviation Vde between the voltage reference value Vref and the charging voltage command value Vc is supplied to the charging voltage control unit 23.

  The discharge determination unit 19 compares the DC voltage detected by the voltage detection device 15 with the discharge voltage command value Vd of the discharge voltage command output unit 21, and the DC voltage of the voltage detection device 15 is smaller than the discharge voltage command value Vd. When it becomes, it is determined that discharge is given priority. When the discharge determination unit 19 determines discharge priority, the discharge determination unit 19 turns on the discharge switch 24 and supplies the voltage deviation Vde between the voltage reference value Vref and the discharge voltage command value Vd to the discharge voltage control unit 25.

  As a result, by clarifying the difference between the voltage reference value Vref and the charge / discharge voltage command values Vc and Vd, the charge determination unit 18 and the discharge determination unit 19 can only reliably determine the charge priority and the discharge priority. Even if the DC voltage is accompanied by fluctuations, the same charge priority time and discharge priority time can be generated by applying the charge bias voltage and the discharge bias voltage. Therefore, the charging current command Icref and the discharging current command Idref can be extracted from the charging voltage control unit 23 and the discharging voltage control unit 25 without any bias.

  According to this embodiment, when the DC voltage detected by the voltage detection device 15 becomes larger than the voltage reference value of the first reference voltage setting unit 61a, the charging voltage command output unit 20 is charged with respect to the voltage reference value Vref. It can be taken out in a state where the difference from the voltage command value is clarified. Moreover, it can take out in the state which clarified the difference with the discharge voltage command value of the discharge voltage command output part 21 with respect to the voltage reference value Vref. In addition, when the voltage reference value of the DC voltage is changed, the charge determination unit 18 and the discharge determination unit 19 are changed by changing the charge voltage command value and the discharge voltage command value by applying a bias voltage corresponding to the deviation of the voltage reference value. Therefore, it is possible to accurately determine the charge priority and the discharge priority. Then, the charge determination unit 18 and the discharge determination unit 19 can generate equal charge priority time and discharge priority time. Therefore, the positive and negative symmetrical charging current command Icref and discharging current command Idref can be extracted from the charging voltage control unit 23 and the discharging voltage control unit 25.

  Therefore, in the present control device, the charge / discharge current control unit 27 performs charge / discharge control on the charge / discharge circuit 10 using the equal charge current command Icref and discharge current command Idref, thereby increasing the charge / discharge efficiency. The power stored in the power storage device 13 can be used effectively.

(Fifth embodiment)
FIG. 7 is a block diagram showing a fifth embodiment of the elevator control apparatus according to the present invention. In the figure, the same parts as those in FIG. 6 are denoted by the same reference numerals, and detailed description thereof is omitted.
In this embodiment, a charge limit unit (charge limit unit) 71 and a discharge limit unit (discharge limit unit) 72 are individually connected to each branch line connecting the deviation calculation element 60 and the deviation calculation elements 62 and 63 shown in FIG. It is the structure which inserted. In the charging limit unit 71, the difference voltage between the DC voltage detected by the voltage detection device 15 and the voltage reference value of the first reference voltage setting unit 61a gives an abnormality to the charging voltage command value of the charging voltage command output unit 20. When the value becomes a corresponding large value, it has a function of limiting it with a predetermined charge limit voltage and protecting it from becoming an abnormal charge voltage command value.

  In the discharge limit unit 72, the difference voltage between the DC voltage detected by the voltage detection device 15 and the voltage reference value of the first reference voltage setting unit 61a gives an abnormality to the discharge voltage command value of the discharge voltage command output unit 21. In the case of a corresponding large value, it has a function of limiting with a predetermined discharge limit voltage and protecting it from becoming an abnormal discharge voltage command value.

  A voltage abnormality detection unit (voltage abnormality detection means) 73 is connected to the output side of the charge limit unit 71 and the discharge limit unit 72. When the voltage abnormality detection unit 73 receives a voltage abnormality signal indicating that the difference voltage between the DC voltage and the voltage reference value has exceeded the charge limit voltage or the discharge limit voltage from the charge limit unit 71 or the discharge limit unit 72, the control room Alternatively, a voltage abnormality state is reported to a monitoring panel of a service center (not shown) or an elevator control panel (not shown), and the operation of the elevator is stopped if necessary, or early maintenance and inspection are urged.

  Other configurations are the same as those in FIG. 6 and are omitted here.

  In the elevator control device as described above, the direct current voltage detected by the voltage detection device 15 and the first reference voltage setting unit are provided by providing the charge limit unit 71 and the discharge limit unit 72 on the output side of the deviation calculation element 60. When the difference voltage from the voltage reference value 61a exceeds the charge limit voltage or discharge limit voltage of the charge limit unit 71 and the discharge limit unit 72 set as the upper and lower limit values, the voltage is limited by the charge limit voltage or the discharge limit voltage. The output voltage can be output as a differential voltage and finally provided to the charge voltage command output unit 20 and the discharge voltage command output unit 21 via the deviation calculation elements 62 and 63. Thereby, charging / discharging operation | movement can be protected by preventing it from becoming an abnormal charge voltage command value and discharge voltage command value.

  Therefore, according to such an embodiment, when the DC voltage between the DC lines P and N increases for some reason, and when the DC voltage increases due to an abnormality in the voltage detection device 15 itself, The difference voltage from the voltage reference value of the first reference voltage setting unit 61a increases. At this time, even if the difference voltage exceeds the charge limit voltage of the charge limit unit 71 or the discharge limit voltage of the discharge limit unit 72, the charge limit voltage is limited by these charge limit voltage or discharge limit voltage. It is possible to avoid giving an abnormality to the command value. As a result, the determination of the charge priority and the discharge priority in the charge determination unit 18 and the discharge determination unit 19 is not affected. Therefore, the positive and negative charge current command Icref and the discharge current command Idref with little deviation can be extracted from the charge voltage control unit 23 and the discharge voltage control unit 25.

  Further, since the charge limit unit 71 and the discharge limit unit 72 transmit a voltage abnormality signal indicating that the difference voltage exceeds the charge limit voltage or the discharge limit voltage to the voltage abnormality detection unit 73, the charge limit unit 71 and the discharge limit unit 72 manage from the voltage abnormality detection unit 73. Abnormal conditions such as DC voltage can be promptly reported to rooms, service centers, control panels, etc.

(Sixth embodiment)
FIG. 8 is a block diagram showing a sixth embodiment of the elevator control apparatus according to the present invention. In the figure, the same parts as those in FIG. 7 are denoted by the same reference numerals, and detailed description thereof is omitted.
In this embodiment, a filter device 31 such as a low-pass filter is provided on the output side of the voltage detection device 15. Therefore, FIG. 8 has the same configuration as FIG. 7 except for the filter device 31.

  The filter device 31 is generated from the equipment of the control device of the present invention including the inverter 4 by cutting off the high-frequency component voltage superimposed on the DC voltage between the DC lines P and N detected by the voltage detection device 15. It has a function to eliminate error factors caused by noise and other external noise. That is, the filter device 31 cuts off the high-frequency component voltage that becomes an error factor, and passes only the DC voltage appearing between the DC lines P and N detected by the voltage detection device 15, and the deviation calculation element 60 and the charge determination described above. This is a configuration for sending to the unit 18 and the discharge determination unit 19.

  According to this embodiment, the filter device 31 is provided on the output side of the voltage detection device 15, and the high frequency component voltage superimposed on the DC voltage appearing between the DC lines P and N is cut off to remove the influence of the error. Therefore, the detection error by the voltage detector 15 can be limited. Further, since the charge limit unit 71 and the discharge limit unit 72 are provided on the output side of the deviation calculation element 60, not only the detection error by the voltage detection device 15 is limited as described above but also the charge limit voltage or the discharge limit voltage. Since the limit is imposed, the charge voltage command value and the discharge voltage command value are less affected.

  Further, when the difference voltage of the deviation calculation element 60 exceeds the charge limit voltage or the discharge limit voltage, a voltage abnormality signal indicating that the charge limit voltage or the discharge limit voltage has been exceeded is supplied from the charge limit unit 71 or the discharge limit unit 72 as a voltage. Since it transmits to the abnormality detection part 73, a voltage abnormality signal can be output outside from the voltage abnormality detection part 73, and the driving | running | working of an elevator can be stopped or early maintenance inspection can be urged.

(Seventh embodiment)
FIG. 9 is a block diagram showing a sixth embodiment of the elevator control apparatus according to the present invention. In the figure, the same parts as those in FIG. 7 are denoted by the same reference numerals, and detailed description thereof is omitted.
In this embodiment, an addition averaging device 41 is connected to the output side of the voltage detection device 15 instead of the filter device 31. The addition averaging device 41 takes in N DC voltages between the DC lines P and N output from the voltage detection device 15 and performs an averaging operation, and a plurality of averaged DCs appearing between the DC lines P and N are obtained. Take out the voltage. Then, the addition averaging device 41 sends the DC voltage subjected to the addition averaging to the above-described deviation calculation element 60, the charge determination unit 18, and the discharge determination unit 19. Other configurations are the same as those in FIG.

In such an elevator control device, the averaging device 32 takes in N DC voltages between the DC lines P and N detected by the voltage detection device 15 and then adds these N DC voltages. Then, the averaging device 41 obtains an averaged DC voltage by dividing the added voltage of the N DC voltages by N. Specifically, as shown in FIG. 5, the averaging device 41 takes in N DC voltages between the DC lines P and N detected by the voltage detector 15 while the elevator is stopped, and then An addition average value VdAVE is obtained by an arithmetic expression. That is, if the captured DC voltage is Vd (1),..., Vd (N), the addition average value VdAVE is
VdAVE = {Vd (1) + Vd (2) +..., Vd (N)} / N
It becomes.

  Then, the addition average value VdAVE obtained as described above is a DC voltage detected by the voltage detection device 15 and is sent to the deviation calculation element 60, the charge determination unit 18, and the discharge determination unit 19. The operations of the deviation calculation element 60, the charge determination unit 18 and the discharge determination unit 19 are as described above.

  According to this embodiment, since the addition average value VdAVE, which is the output of the addition averaging device 41, is a DC voltage appearing between the DC lines P and N, an error is introduced into the individual DC voltage detected by the voltage detection device 15. Even if it is included, the detection error included in the DC voltage detected by the voltage detection device 15 is taken out as a DC voltage in a totally limited state, and the deviation calculation element 60, the charge determination unit 18 and the discharge determination unit 19 are extracted. Can be sent out.

  Moreover, since the charge limit unit 71 and the discharge limit unit 72 are provided on the output side of the deviation calculation element 60, not only the detection error by the voltage detection device 15 is limited as described above, but also the charge limit value or the discharge limit value. Since the limit is imposed, the charge voltage command value and the discharge voltage command value are less affected.

  Further, when the difference voltage of the deviation calculating element 60 exceeds the charge limit value or the discharge limit value, a voltage abnormality detection signal indicating that the charge limit value or the discharge limit value has been exceeded from the charge limit unit 71 or the discharge limit unit 72 is detected. Since it is transmitted to the unit 73, the voltage abnormality detection signal can be output from the voltage abnormality detecting unit 73 to stop the operation of the elevator or prompt early maintenance inspection.

  In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary, various deformation | transformation can be implemented. For example, the charge bias setting unit 16 and the discharge bias setting unit 17 set the variation of the voltage reference value of the past DC voltage with respect to the predetermined voltage reference value as the charge bias voltage and the discharge bias voltage. The bias voltage includes, for example, technical means for outputting a voltage difference between a predetermined voltage reference value and an actual voltage reference value of the DC voltage as a charge / discharge bias value.

  Moreover, each embodiment can be implemented in combination, and in that case, the effect of the combination can be obtained.

The block diagram which shows 1st Embodiment of the elevator control apparatus which concerns on this invention. The output waveform figure of each component of the elevator control apparatus shown in FIG. The block diagram which shows 2nd Embodiment of the elevator control apparatus which concerns on this invention. The block diagram which shows 3rd Embodiment of the elevator control apparatus which concerns on this invention. The figure explaining the processing operation of the addition average apparatus shown in FIG. The block diagram which shows 4th Embodiment of the elevator control apparatus which concerns on this invention. The block diagram which shows 5th Embodiment of the elevator control apparatus which concerns on this invention. The block diagram which shows 6th Embodiment of the elevator control apparatus which concerns on this invention. The block diagram which shows 7th Embodiment of the elevator control apparatus which concerns on this invention. The block diagram which shows the conventional elevator control apparatus. The output waveform figure of each component of the conventional elevator control apparatus at the time of the normal time and fluctuation | variation of a customer power supply.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Customer power supply, 2 ... Rectifier circuit, 3 ... DC capacitor, 4 ... Inverter, 6 ... Electric motor, 7 ... Main sheave, 9 ... Car, 10 ... Counterweight, 11 ... Charge / discharge circuit, 13 ... Power storage device, DESCRIPTION OF SYMBOLS 14 ... Current detection apparatus, 15 ... Voltage detection apparatus, 16 ... Charge bias setting part, 17 ... Discharge bias setting part, 18 ... Charge judgment part, 19 ... Discharge judgment part, 20 ... Charge voltage command output part, 21 ... Discharge voltage Command output unit 22 ... Charge switch 23 ... Charge voltage control unit 24 ... Discharge switch 25 ... Discharge voltage control unit 26 ... Deviation calculation element 27 ... Current control unit 31 ... Filter device 41 ... Addition Average device, 60, 62 to 65 ... Deviation calculation element, 61a, 61b ... Reference voltage setting unit, 71 ... Charge limit unit, 72 ... Discharge limit unit, 73 ... Voltage abnormality detection unit.

Claims (8)

A rectifier circuit that converts an AC voltage of a customer power source into a DC voltage, a DC capacitor that is connected between the DC lines on the output side of the rectifier circuit and smoothes the ripple of the converted DC voltage, and the smoothed An inverter that converts the converted DC voltage into an AC voltage having a variable voltage and a variable frequency and outputs the AC voltage, a hoisting machine that drives using the AC voltage output from the inverter to raise and lower the car, and the inverter according to a predetermined operation pattern Inverter control means for controlling the power and the DC line via a charge / discharge circuit, and stores the regenerative energy generated by the electric motor constituting the hoist during regenerative operation, and stores the energy stored during power running In an elevator control device provided with a power storage device that discharges between the DC lines,
Voltage detecting means for detecting a DC voltage between the DC lines, charging voltage command output means for outputting a charging voltage command value serving as a threshold value for determining charging start, and a discharging voltage command serving as a threshold value for determining discharge start Discharge voltage command output means for outputting a value, and when the DC voltage detected by the voltage detection means exceeds the charge voltage command value output from the charge voltage command output means, it is determined that charging is prioritized, and the DC Charge priority control means for outputting a charge current command over a period in which the voltage exceeds, and discharging when the DC voltage detected by the voltage detection means falls below the discharge voltage command value output from the discharge voltage command output means Detected by the discharge priority control means for determining the priority and outputting the discharge current command over the period when the DC voltage is decreasing, and the voltage detection means accompanying the fluctuation of the customer power supply Bias setting that additionally sets a predetermined bias voltage to the voltage command output means when the voltage reference value of the DC voltage to be generated is changed, and generates the positive and negative charge current command and the discharge current command in a target waveform without bias And a current deviation between a charging current command output from the charging priority control unit and a charging current to the power storage device, or a discharge current command output from the discharge priority control unit and a discharging current from the power storage device. An elevator control device comprising charge / discharge control means for charge / discharge control of the charge / discharge circuit based on a current command value corresponding to a current deviation.   The charge priority control means compares the DC voltage detected by the voltage detection means with the charge voltage command value output from the charge voltage command output means, and when the DC voltage exceeds the charge voltage command value. Charge determining means for determining charging and outputting a voltage deviation between the DC voltage and the charging voltage command value, and converting and outputting the positive charging current command corresponding to the voltage deviation output from the charging determining means The elevator control apparatus according to claim 1, further comprising a charging voltage control unit.   The discharge priority control means compares the DC voltage detected by the voltage detection means with the discharge voltage command value output from the discharge voltage command output means, and the DC voltage is lower than the discharge voltage command value. A discharge determination means for determining a discharge and outputting a voltage deviation between the DC voltage and the discharge voltage command value, and converting to a negative charge current command corresponding to the voltage deviation output from the discharge determination means. The elevator control device according to claim 1, further comprising discharge voltage control means for outputting.   The bias setting means includes a charge bias setting means for setting a charge bias voltage and a discharge bias setting means for setting a discharge bias voltage. The charge bias setting means has a DC voltage detected by the voltage detection means. The charging bias voltage is additionally set in the charging voltage command output means when the voltage reference value fluctuates, and the discharging bias setting means performs the discharging when the voltage reference value of the DC voltage detected by the voltage detecting means fluctuates. The elevator control apparatus according to claim 1, wherein a bias voltage is additionally set in the discharge voltage command output means. A rectifier circuit that converts an AC voltage of a customer power source into a DC voltage, a DC capacitor that is connected between the DC lines on the output side of the rectifier circuit and smoothes the ripple of the converted DC voltage, and the smoothed An inverter that converts the converted DC voltage into an AC voltage having a variable voltage and a variable frequency and outputs the AC voltage, a hoisting machine that drives using the AC voltage output from the inverter to raise and lower the car, and the inverter according to a predetermined operation pattern Inverter control means for controlling the power and the DC line via a charge / discharge circuit, and stores the regenerative energy generated by the electric motor constituting the hoist during regenerative operation, and stores the energy stored during power running In an elevator control device provided with a power storage device that discharges between the DC lines,
Voltage detecting means for detecting a DC voltage between the DC lines, first reference voltage setting means for setting a first voltage reference value serving as a reference of a DC voltage detected by the voltage detecting means, and the customer A charging bias voltage corresponding to the fluctuation of the reference voltage value of the DC voltage detected by the voltage detection means with the fluctuation of the power supply is set, and the DC voltage and the first voltage when the voltage reference value of the DC voltage fluctuates. Charging bias setting means for adding and outputting the charging bias voltage in addition to a voltage deviation from the voltage reference value, and a reference voltage value of the DC voltage detected by the voltage detecting means in accordance with fluctuations in the customer power supply A discharge bias voltage corresponding to the fluctuation amount of the DC voltage is set, and when the voltage reference value of the DC voltage changes, the discharge bias voltage is subtracted and output to a voltage deviation between the DC voltage and the first voltage reference value. Let From the discharge bias setting means, the second reference voltage setting means for setting the second voltage reference value serving as a reference for the DC voltage, the voltage reference value of the second reference voltage setting means, and the charge bias setting means Charge voltage command output means for taking in an added voltage with the voltage that has been given in addition and outputting it as a charge voltage command value; subtracting from the voltage reference value of the second reference voltage setting means and the discharge bias setting means Discharge voltage command output means for taking in a voltage added to the output voltage and outputting it as a discharge voltage command value, and a DC voltage detected by the voltage detection means is output from the charge voltage command output means A charging priority control means for determining that charging is prioritized when the charging voltage command value is exceeded, and outputting a charging current command over a period in which the DC voltage exceeds, and the voltage detecting means Discharge priority control for determining discharge priority when the output DC voltage is lower than the discharge voltage command value output from the discharge voltage command output means and outputting a discharge current command over a period during which the DC voltage is decreasing And a current deviation between a charge current command output from the charge priority control means and a charge current to the power storage device or a discharge current command output from the discharge priority control means and a discharge current from the power storage device. An elevator control device, comprising: charge / discharge control means for charge / discharge control of the charge / discharge circuit based on a current command value corresponding to a current deviation. In the elevator control device according to claim 5,
The output line of the voltage deviation between the DC voltage detected by the voltage detection means and the voltage reference value of the first reference voltage setting means is branched into two, provided on one of the output lines, and the voltage deviation is set to a predetermined value. The voltage deviation limited by the charge limit voltage is output, and the charge limit means for outputting a voltage abnormality signal and the other output line are provided, and the voltage deviation limited by the predetermined discharge limit voltage is output. In addition, there is provided an elevator control device comprising discharge limit means for outputting a voltage abnormality signal and voltage abnormality detection means for notifying a predetermined location of abnormality based on the voltage abnormality signal output from the limit means. . In the elevator control device according to any one of claims 1, 5, and 6,
A filter device connected to the output side of the voltage detection means and configured to cut a high-frequency component voltage that is an error factor included in the DC voltage detected by the voltage detection means is provided to limit a detection voltage error by the voltage detection means. An elevator control device characterized by the above. In the elevator control device according to any one of claims 1, 5, and 6,
An addition averaging device connected to the output side of the voltage detection means, taking in a DC voltage detected by the voltage detection means a plurality of times, and obtaining and outputting an addition average value is provided, and a detection voltage error by the voltage detection means is limited. An elevator control device characterized by:

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