WO2016194126A9 - 無停電電源装置 - Google Patents
無停電電源装置 Download PDFInfo
- Publication number
- WO2016194126A9 WO2016194126A9 PCT/JP2015/065862 JP2015065862W WO2016194126A9 WO 2016194126 A9 WO2016194126 A9 WO 2016194126A9 JP 2015065862 W JP2015065862 W JP 2015065862W WO 2016194126 A9 WO2016194126 A9 WO 2016194126A9
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- Prior art keywords
- power
- power supply
- semiconductor switch
- supplied
- inverter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/10—Constant-current supply systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
Definitions
- the present invention relates to an uninterruptible power supply, and more particularly to an uninterruptible power supply capable of continuing the supply of AC power to a load even when a power failure occurs.
- the conventional uninterruptible power supply device includes a converter, an inverter, and a bypass circuit.
- the AC power supplied from the AC power supply is converted to DC power by the converter, and the DC power is stored in the power storage device and converted to AC power by the inverter. And supplied to the load.
- the inverter fails, AC power from the AC power source is supplied to the load via the bypass circuit.
- the DC power of the power storage device is converted into AC power by an inverter and supplied to a load (for example, JP 2010-220339 A (Patent Document 1). )reference).
- the AC power generated by the inverter is normally supplied to the load, and when the inverter fails, the AC power from the AC power source is supplied to the load via the bypass circuit. is called.
- This method has an advantage that high-quality AC power with a small voltage fluctuation generated by the inverter can be supplied to the load, and a disadvantage that power loss is always generated in the inverter and efficiency is low.
- the main object of the present invention is to provide a low-cost uninterruptible power supply.
- the uninterruptible power supply includes a first input terminal that receives the first AC power supplied from the first AC power supply, and a second input that receives the second AC power supplied from the second AC power supply.
- Two input terminals a battery terminal connected to the power storage device, an output terminal connected to the load, a converter connected to the first input terminal and converting the first AC power to DC power, and a converter
- An inverter that converts the DC power generated by or the DC power of the power storage device into third AC power, a first semiconductor switch connected between the second input terminal and the output terminal, A first mechanical switch connected in parallel to the semiconductor switch and a control device for controlling the uninterruptible power supply by the selected one of the first and second power feeding methods.
- the second power supply method can be selected only when the second semiconductor switch is connected in parallel to the first semiconductor switch.
- the first power supply method when the inverter is normal, the third AC power generated by the inverter is supplied to the load.
- the inverter fails the second AC power supplied from the second AC power is supplied.
- This is a power feeding method in which AC power is supplied to a load through a first semiconductor switch for a predetermined time and second AC power is supplied to the load through a first mechanical switch.
- the second power supply method supplies the second AC power to the load via the second semiconductor switch, When the supply of the second AC power from the AC power supply is stopped, the second semiconductor switch is turned off and the third AC power generated by the inverter is supplied to the load.
- the uninterruptible power supply according to the present invention is basically a device that executes a first power feeding method using a first semiconductor switch, and the second semiconductor switch is connected in parallel to the first semiconductor switch. When the second power supply method is selected, the second power supply method is performed using the second semiconductor switch. Therefore, the cost of the apparatus can be reduced as compared with the case where the first power supply type uninterruptible power supply apparatus and the second power supply type uninterruptible power supply apparatus are separately designed and manufactured.
- FIG. 3 is a circuit diagram illustrating a configuration of a semiconductor switch 3 illustrated in FIG. 2. It is a circuit block diagram which shows the structure of the uninterruptible power supply device in which the semiconductor switch 20 is mounted. It is a circuit block diagram for demonstrating the usage method and operation
- FIG. 5 is a circuit diagram illustrating a configuration of the semiconductor switch 20 illustrated in FIG. 4.
- FIG. 1 is a circuit block diagram showing a configuration of an uninterruptible power supply 1 according to an embodiment of the present invention.
- FIG. 1 shows a state where only the standard semiconductor switch 3 (first semiconductor switch) is mounted and the optional semiconductor switch 20 (second semiconductor switch) is not mounted.
- the uninterruptible power supply 1 includes a substrate 2.
- the operation unit 7 and the control device 8 are mounted.
- a space A for mounting the optional semiconductor switch 20 is provided.
- FIG. 2 is a circuit block diagram for explaining how to use and operate the uninterruptible power supply 1 shown in FIG.
- the input terminals T1a to T1c receive commercial-phase three-phase AC power supplied from a commercial AC power source 31 (first AC power source).
- Bypass terminals T2a to T2c receive commercial-phase three-phase AC power supplied from bypass AC power source 32 (second AC power source).
- the bypass AC power supply 32 may be a commercial AC power supply or a generator.
- the battery terminals T3a and T3b are connected to the positive electrode and the negative electrode of the battery 33 (power storage device), respectively.
- a capacitor may be connected instead of the battery 33.
- the output terminals T4a to T4c are connected to the load 34.
- the load 34 is driven by commercial-phase three-phase AC power supplied from the uninterruptible power supply 1.
- An optional semiconductor switch 20 is connected to the switch terminals T5a to T5c and T6a to T6c. This will be described later.
- One terminals of the mechanical switches S1a to S1c are connected to the input terminals T1a to T1c, respectively, and the other terminals are connected to the three input nodes of the converter, respectively.
- the mechanical switches S1a to S1c are controlled by the control device 8, and are turned on when DC power is generated by the converter 4, and when the operation of the converter 4 is stopped, for example, supply of three-phase AC power from the commercial AC power supply 31 is performed. Turned off during a stopped power outage.
- the converter 4 is controlled by the control device 8, and at the normal time when the three-phase AC power is supplied from the commercial AC power supply 31, the converter 4 converts the three-phase AC power supplied from the commercial AC power supply 31 via the mechanical switches S 1 a to S 1 c to DC. Convert to electricity.
- the converter 4 normally converts a three-phase AC voltage supplied from the commercial AC power supply 31 to the three input nodes via the mechanical switches S1a to S1c into a DC voltage, and outputs the DC voltage to two outputs. Output between nodes.
- the operation of the converter 4 is stopped.
- each of DC positive bus PL and DC negative bus NL is connected to two output nodes of converter 4, and the other end thereof is connected to two input nodes of inverter 5.
- Capacitor C1 is connected between DC positive bus PL and DC negative bus NL, and smoothes the DC voltage between DC positive bus PL and DC negative bus NL.
- the DC power generated by the converter 4 is supplied to the inverter 5 through the DC positive bus PL and the DC negative bus NL, and is also supplied to the bidirectional chopper 6.
- Bidirectional chopper 6 is connected to DC positive bus PL and DC negative bus NL, and to battery terminals T3a and T3b.
- the bidirectional chopper 6 is controlled by the control device 8, and supplies DC power generated by the converter 4 to the battery 33 during normal times when three-phase AC power is supplied from the commercial AC power supply 31.
- the DC power of the battery 33 is supplied to the inverter 5.
- the bi-directional chopper 6 steps down the DC voltage generated by the converter 4 and supplies it to the battery 33 during normal operation, and boosts the voltage across the terminals of the battery 33 and supplies it to the inverter 5 during power failure.
- the inverter 5 is controlled by the control device 8 and converts the DC power generated by the converter 4 into the three-phase AC power of the commercial frequency in the normal time when the three-phase AC power is supplied from the commercial AC power supply 31. At the time of a power failure when the supply of the three-phase AC power from the AC power supply 31 is stopped, the DC power supplied from the battery 33 via the bidirectional chopper 6 is converted into the commercial-phase three-phase AC power.
- the inverter 5 normally generates a three-phase AC voltage having a commercial frequency based on a DC voltage applied between two input nodes from the converter 4, and outputs the generated three-phase AC voltage to three outputs. Output to the node.
- the inverter 5 In the event of a power failure, the inverter 5 generates a three-phase AC voltage having a commercial frequency based on a DC voltage applied between the two input nodes from the battery 33 via the bidirectional chopper 6, and generates the generated three-phase AC voltage. Output to three output nodes.
- One terminals of the mechanical switches (second mechanical switches) S2a to S2c are connected to three output nodes of the inverter 5, respectively, and the other terminals thereof are connected to the output terminals T4a to T4c, respectively.
- the mechanical switches S2a to S2c are controlled by the control device 8 and are turned on when supplying AC power generated by the inverter 5 to the load 34, and stop supplying AC power generated by the inverter 5 to the load 34. And when the inverter 5 fails.
- One terminals of mechanical switches (first mechanical switches) S3a to S3c are connected to bypass terminals T2a to T2c, respectively, and the other terminals are connected to output terminals T4a to T4c, respectively.
- the mechanical switches S3a to S3c are controlled by the control device 8, and when the three-phase AC power from the bypass AC power source 32 is supplied to the load 34, for example, when the inverter 5 fails, the mechanical switches S3a to S3c are turned on. When the phase AC power is not supplied to the load 34, it is turned off.
- the one terminals of the mechanical switches S4a to S4c are connected to the bypass terminals T2a to T2c, respectively, and the other terminals are connected to the three input nodes of the semiconductor switch 3, respectively.
- the mechanical switches S4a to S4c are controlled by the control device 8, are normally turned on, and are turned off, for example, during maintenance of the semiconductor switch 3.
- the three output nodes of the semiconductor switch 3 are connected to output terminals T4a to T4c, respectively.
- the semiconductor switch 3 is controlled by the control device 8, is normally turned off, and is turned on for a predetermined time Tb when the inverter 5 fails.
- a semiconductor switch 3 having a rated current value smaller than the rated current value of the uninterruptible power supply 1 is used. For this reason, the load current cannot always flow through the semiconductor switch 3.
- the rated current values of the mechanical switches S1a to S1c, S2a to S2c, S3a to S3c, and S4a to S4c are sufficiently larger than the rated current value of the semiconductor switch 3. For this reason, the load current can always flow through the mechanical switches S2a to S2c, S3a to S3c.
- the semiconductor switch 3 includes six thyristors 10 as shown in FIG. Of the six thyristors 10, three thyristors 10 have anodes connected to three input nodes 3a to 3c, respectively, and cathodes connected to three output nodes 3d to 3f, respectively. The anodes of the remaining three thyristors 10 are connected to the three output nodes 3d to 3f, respectively, and their cathodes are connected to the three input nodes 3a to 3c, respectively.
- the control terminal 3g of the semiconductor switch 3 receives the control signal CNT1 from the control device 8 via the signal line SL1.
- the control signal CNT1 is normally set to the “L” level, which is an inactivation level, and is set to the “H” level, which is an activation level, for a predetermined time Tb when the inverter 5 fails.
- each thyristor 10 is turned off.
- Each thyristor 10 is turned on when the control signal CNT1 is set to “H” level and a voltage in the forward bias direction is applied.
- An IGBT Insulated Gate Bipolar Transistor
- the three input nodes 3a to 3c of the semiconductor switch 3 are connected to switch terminals T5a to T5c, respectively, and the three output nodes 3d to 3f of the semiconductor switch are connected to switch terminals T6a to T6c, respectively.
- the switch terminals T5a to T5c and T6a to T6c will be described later.
- the operation unit 7 includes buttons, switches, and the like.
- the user of the uninterruptible power supply 1 operates the operation unit 7 so that any one of a constant inverter power supply method (first power supply method) and a constant bypass power supply method (second power supply method) is selected. Selection, instructions for starting and stopping automatic operation of the uninterruptible power supply 1, instructions for starting and stopping manual operation of the uninterruptible power supply 1 can be performed.
- the operation unit 7 outputs a signal indicating the operation result to the control device 8.
- the control device 8 includes a signal from the operation unit 7, an instantaneous value of the three-phase AC voltage supplied from the commercial AC power supply 31, an instantaneous value of the three-phase AC voltage supplied from the bypass AC power supply 32, and a terminal voltage of the battery 33. , The instantaneous value of the voltage across terminals of the capacitor C1, the instantaneous value of the voltage at each of the output terminals T4a to T4c, the instantaneous value of the load current, and the like.
- the operation of the uninterruptible power supply 1 in which the optional semiconductor switch 20 is not mounted and the constant inverter power supply method is selected will be described. It is assumed that the user of the uninterruptible power supply 1 uses the operation unit 7 to select the constant inverter power supply method among the constant inverter power supply method and the constant bypass power supply method. When the optional semiconductor switch 20 is not mounted, the bypass power supply method cannot be selected at all times.
- the inverter power supply method may be automatically selected without being selected using the operation unit 7. For example, when the signal line SL2 (see FIG. 6) for the semiconductor switch 20 is not connected, the control device 8 determines that the semiconductor switch 20 is not mounted and always performs inverter power feeding. If the semiconductor switch 20 is not mounted, the inverter power supply method may be fixed at the time of shipment.
- the semiconductor switch 3 and the mechanical switches S3a to S3c are turned on, the mechanical switches S2a to S2c are turned off, and the semiconductor switch 3 is turned off after a predetermined time Tb has elapsed.
- the three-phase AC power from the bypass AC power supply 32 is supplied to the load 34 via the mechanical switches S3a to S3c, and the operation of the load 34 is continued.
- FIG. 4 is a circuit block diagram showing a configuration of the uninterruptible power supply 1A on which the optional semiconductor switch 20 is mounted, and is a diagram to be compared with FIG.
- FIG. 5 is a circuit block diagram for explaining the method of use and operation of uninterruptible power supply 1A shown in FIG. 4, and is a diagram compared with FIG.
- FIG. 6 is a circuit diagram showing a configuration of the semiconductor switch 20, and is a diagram to be compared with FIG.
- the optional semiconductor switch 20 is disposed in the space A and is fixed to the uninterruptible power supply 1A using, for example, a plurality of screws. Since the semiconductor switch 20 is always energized, a cooler with fins that dissipates heat generated by the semiconductor switch 20 and a fan that blows air to the cooler may be provided.
- the three input nodes 20a to 20c of the semiconductor switch 20 are connected to the switch terminals T5a to T5c, respectively, and the three output nodes 20d to 20f of the semiconductor switch 20 are connected to the switch terminals T6a to T6c, respectively.
- one end of six wires is screwed to nodes 20a to 20f of semiconductor switch 20, and the other end is screwed to switch terminals T5a to T5c and T6a to T6c, respectively.
- the connector provided at one end of the six wires and the connector provided at the nodes 20a to 20f of the semiconductor switch 20 are detachably connected, and the connector provided at the other end of the wiring and the switch terminal T5a to The connectors provided on T5c and T6a to T6c may be detachably connected.
- the control terminal 20g of the semiconductor switch 20 is connected to a control terminal (not shown) of the control device 8 through the signal line SL2.
- one end of the signal line SL2 is screwed to the control terminal 20g, and the other end is screwed to the control device 8.
- the connector provided at one end of the signal line SL2 and the connector provided at the control terminal 20g are detachably connected, and the connector provided at the other end and the connector provided at the control device 8 are detachable. Connect freely.
- the semiconductor switch 20 is detachably attached to the substrate 2.
- the semiconductor switch 20 includes six thyristors 21 as shown in FIG. Of the six thyristors 21, the anodes of three thyristors 21 are connected to three input nodes 20a to 20c, respectively, and their cathodes are connected to three output nodes 20d to 20f, respectively. The anodes of the remaining three thyristors 21 are connected to the three output nodes 20d to 20f, respectively, and their cathodes are connected to the three input nodes 20a to 20c, respectively.
- the control terminal 20g of the semiconductor switch 20 receives the control signal CNT2 from the control device 8 through the signal line SL2.
- the control signal CNT2 is set to the “H” level of the activation level during normal times when the three-phase AC power is supplied from the AC power sources 31 and 32, and the supply of the three-phase AC power from the AC power sources 31 and 32 is stopped.
- the deactivation level is set to “L” level.
- each thyristor 21 is turned off.
- Each thyristor 21 is turned on when the control signal CNT2 is set to the “H” level and a voltage in the forward bias direction is applied.
- An IGBT may be provided instead of the thyristor 21.
- the semiconductor switch 20 Since a load current always flows through the semiconductor switch 20, the semiconductor switch 20 having a rated current value equal to or higher than the rated current value of the uninterruptible power supply 1A is used. Therefore, the rated current value of the semiconductor switch 20 is larger than the rated current value of the semiconductor switch 3.
- the uninterruptible power supply 1A equipped with the optional semiconductor switch 20 is basically used as an uninterruptible power supply of the always bypass power supply method.
- the user of the uninterruptible power supply 1 ⁇ / b> A uses the operation unit 7 to select the always bypass power supply method. However, even when the semiconductor switch 20 is mounted, it is possible to always select the inverter feeding method using the operation unit 7.
- the control device 8 controls the uninterruptible power supply 1 ⁇ / b> A according to a signal from the operation unit 7.
- the bypass power feeding method may be automatically selected without being selected using the operation unit 7. For example, when the signal line SL2 is connected, the control device 8 determines that the semiconductor switch 20 is mounted and always performs bypass power feeding, and when the signal line SL2 is not connected, the semiconductor switch 20 It is determined that it is not installed, and inverter power supply is always performed.
- the user of the uninterruptible power supply 1 ⁇ / b> A selects the always bypass power supply method using the operation unit 7, and uses the commercial AC power supply 31 as the bypass AC power supply 32.
- the mechanical switches S1a to S1c are controlled by the control device 8 and the converter 4 generates DC power.
- the converter 4 When it is turned on and the operation of the converter 4 is stopped, for example, it is turned off at the time of a power failure when the supply of three-phase AC power from the AC power sources 31 and 32 is stopped.
- the converter 4 is controlled by the control device 8, and in the normal time when the three-phase AC power is supplied from the AC power sources 31 and 32, the three-phase AC power supplied from the AC power source 31 via the mechanical switches S 1 a to S 1 c When the power is converted into DC power and the supply of the three-phase AC power from the AC power sources 31 and 32 is stopped, the operation is stopped.
- the bidirectional chopper 6 is controlled by the control device 8, and supplies DC power generated by the converter 4 to the battery 33 during normal times when three-phase AC power is supplied from the AC power sources 31 and 32. , 32, the DC power of the battery 33 is supplied to the inverter 5 at the time of a power failure when the supply of the three-phase AC power from the battery 32 is stopped.
- the inverter 5 is controlled by the control device 8, and during normal times when three-phase AC power is supplied from the AC power sources 31 and 32, the operation is stopped and the supply of the three-phase AC power from the AC power sources 31 and 32 is stopped. At the time of a stopped power outage, the DC power supplied from the battery 33 via the bidirectional chopper 6 is converted into commercial-phase three-phase AC power.
- the mechanical switches S2a to S2c are controlled by the control device 8, and are turned on when the DC power generated by the inverter 5 is supplied to the load 34, and the supply of the DC power generated by the inverter 5 to the load 34 is stopped. And when the inverter 5 fails.
- the mechanical switches S3a to S3c are controlled by the control device 8 and are turned on when the semiconductor switch 20 and the inverter 5 both fail in a normal state when three-phase AC power is supplied from the AC power sources 31 and 32. The period is turned off.
- the mechanical switches S4a to S4c are controlled by the control device 8, are normally turned on, and are turned off, for example, during maintenance of the semiconductor switches 3 and 20.
- the semiconductor switch 3 is controlled by the control device 8 and is turned on only for a predetermined time Tb when both the semiconductor switch 20 and the inverter 5 fail in a normal time when three-phase AC power is supplied from the AC power sources 31 and 32. Other periods are turned off.
- the operation of the uninterruptible power supply 1A in which the optional semiconductor switch 20 is mounted and the always bypass power feeding method is selected will be described.
- the mechanical switches S1a to S1c, S4a to S4c and the semiconductor switch 20 are turned on, and the mechanical switches S2a to S2c, S3a to S3c and the semiconductor switch 3 is turned off.
- the three-phase AC power supplied from the bypass AC power supply 32 is supplied to the load 34 via the mechanical switches S4a to S4c and the semiconductor switch 20, and the load 34 is operated.
- Three-phase AC power supplied from the commercial AC power supply 31 is converted into DC power by the converter 4 and stored in the battery 33 via the bidirectional chopper 6.
- the inverter 5 is set to a standby state.
- the mechanical switches S2a to S2c are turned on, and the DC power generated by the converter 4 is converted into three-phase AC power by the inverter 5, and the three-phase AC power is supplied to the load 34 via the mechanical switches S2a to S2c, and the operation of the load 34 is continued.
- the inverter 5 fails, the semiconductor switch 3 and the mechanical switches S3a to S3c are turned on, the mechanical switches S2a to S2c are turned off, and the semiconductor switch 3 is turned off after a predetermined time Tb has elapsed.
- the three-phase AC power from the bypass AC power supply 32 is supplied to the load 34 via the mechanical switches S3a to S3c, and the operation of the load 34 is continued.
- the semiconductor switch 20 is turned off, the bypass AC power source 32 and the load 34 are electrically disconnected, and the mechanical switches S1a to S1c are turned off. And the operation of the converter 4 is stopped. Further, the mechanical switches S2a to S2c are turned on, and the DC power of the battery 33 is supplied to the inverter 5 via the bidirectional chopper 6, converted into three-phase AC power of commercial frequency by the inverter 5, and supplied to the load 34. . Therefore, even when a power failure occurs, the operation of the load 34 can be continued during the period in which the DC power is stored in the battery 33.
- the semiconductor switch 20 When the optional semiconductor switch 20 is mounted and the inverter power supply method is always selected, the semiconductor switch 20 is fixed in the off state. Since other operations are the same as when the inverter power supply method is always selected without mounting the semiconductor switch 20, the description thereof will not be repeated.
- the uninterruptible power supply 1 in which the optional semiconductor switch 20 is not mounted is shipped as a constant inverter power supply type uninterruptible power supply with a large shipment amount.
- the uninterruptible power supply 1 is provided with a semiconductor switch 20 as an optional product.
- a space A in which the semiconductor switch 20 is arranged and switch terminals T5a to T5c and T6a to T6c to which the semiconductor switch 20 is connected are provided on the substrate 2. Prepared in advance.
- the uninterruptible power supply 1A equipped with the optional semiconductor switch 20 is basically shipped as an uninterruptible power supply of a constant bypass power supply system with a small shipment amount.
- the uninterruptible power supply 1A can also be used as an uninterruptible power supply of a constant inverter power supply system. Therefore, the cost of the apparatus can be reduced as compared with the case where the always-inverted power supply type uninterruptible power supply apparatus and the always-bypass power supply type uninterruptible power supply apparatus are separately designed and manufactured.
- the semiconductor switch 20 when the optional semiconductor switch 20 is mounted and the always bypass power feeding method is selected, the semiconductor switch is normally used when three-phase AC power is supplied from the AC power sources 31 and 32. 20 was turned on and mechanical switches S2a to S2c were turned off. However, in this method, after the supply of the three-phase AC power from the AC power sources 31 and 32 is stopped, the three-phase AC power generated by the inverter 5 is supplied to the load 34 via the mechanical switches S2a to S2c. , Some time is required.
- the semiconductor switch 20 and the mechanical switches S2a to S2c may be turned on, and only the three-phase AC voltage may be output from the inverter 5 and the inverter 5 may be maintained in a state where no three-phase AC current is output.
- the three-phase AC power can be immediately supplied from the inverter 5 to the load 34.
- the mechanical switches S2a to S2c may be removed and the three output nodes of the inverter 5 may be connected to the output terminals T4a to T4c, respectively.
- T1a to T1c input terminal T2a to T2c bypass terminal, T3a, T3b battery terminal, T4a to T4c output terminal, T5a to T5c, T6a to T6c switch terminal, S1a to S1c, S2a ⁇ S2c, S3a ⁇ S3c, S4a ⁇ S4c
- Mechanical switch 3,20 semiconductor switch, 4 converter, PL DC positive bus, NL DC negative bus, C1 capacitor, 5 inverter, 6 bidirectional chopper, 7 operation unit, 8 control device 10, 21 thyristor, A space, 31 commercial AC power, 32 bypass AC power, 33 loads.
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Abstract
Description
機械スイッチ(第2の機械スイッチ)S2a~S2cの一方端子はそれぞれインバータ5の3つの出力ノードに接続され、それらの他方端子はそれぞれ出力端子T4a~T4cに接続される。機械スイッチS2a~S2cは、制御装置8によって制御され、インバータ5によって生成される交流電力を負荷34に供給する場合はオンされ、インバータ5によって生成される交流電力の負荷34への供給を停止する場合、およびインバータ5が故障した場合はオフされる。
Claims (10)
- [規則91に基づく訂正 29.06.2017]
無停電電源装置であって、
第1の交流電源から供給される第1の交流電力を受ける第1の入力端子と、
第2の交流電源から供給される第2の交流電力を受ける第2の入力端子と、
電力貯蔵装置に接続されるバッテリ端子と、
負荷に接続される出力端子と、
前記第1の入力端子に接続され、前記第1の交流電力を直流電力に変換するコンバータと、
前記コンバータによって生成された直流電力または前記電力貯蔵装置の直流電力を第3の交流電力に変換するインバータと、
前記第2の入力端子と前記出力端子との間に接続された第1の半導体スイッチと、
前記第1の半導体スイッチに並列接続された第1の機械スイッチと、
第1および第2の給電方式のうちの選択された方の給電方式で前記無停電電源装置を制御する制御装置とを備え、
前記第2の給電方式は、前記第1の半導体スイッチに第2の半導体スイッチが並列接続された場合のみ選択可能となり、
前記第1の給電方式は、前記インバータが正常である場合は、前記インバータによって生成された前記第3の交流電力を前記負荷に供給し、前記インバータが故障した場合は、前記第2の交流電源から供給される前記第2の交流電力を前記第1の半導体スイッチを介して前記負荷に予め定められた時間だけ供給するとともに、前記第2の交流電力を前記第1の機械スイッチを介して前記負荷に供給する給電方式であり、
前記第2の給電方式は、前記第2の交流電源から前記第2の交流電力が正常に供給されている場合は、前記第2の交流電力を前記第2の半導体スイッチを介して前記負荷に供給し、前記第2の交流電源からの前記第2の交流電力の供給が停止された場合は、前記第2の半導体スイッチをオフし、前記インバータによって生成された前記第3の交流電力を前記負荷に供給する給電方式である、無停電電源装置。 - 前記第2の半導体スイッチの定格電流値は前記第1の半導体スイッチの定格電流値よりも大きい、請求項1に記載の無停電電源装置。
- 前記第2の半導体スイッチは、前記無停電電源装置のオプション品として用意されている、請求項1に記載の無停電電源装置。
- 前記第2の半導体スイッチは着脱可能になっている、請求項1に記載の無停電電源装置。
- 前記第2の半導体スイッチを設置するためのスペースが用意されている、請求項1に記載の無停電電源装置。
- さらに、前記第1の半導体スイッチの一方端子および他方端子にそれぞれ接続された第1および第2のスイッチ端子を備え、
前記第2の半導体スイッチは前記第1および第2のスイッチ端子間に接続される、請求項1に記載の無停電電源装置。 - さらに、前記第1の半導体スイッチに並列接続された前記第2の半導体スイッチを備える、請求項1に記載の無停電電源装置。
- 前記第2の給電方式は、前記第2の交流電源から前記第2の交流電力が正常に供給されている場合において、前記第2の半導体スイッチが故障してオンしないときは前記インバータによって生成された前記第3の交流電力を前記負荷に供給し、さらに、前記インバータも故障したときは、前記第1の機械スイッチをオンし、前記第2の交流電力を前記第1の機械スイッチを介して前記負荷に供給する給電方式である、請求項1に記載の無停電電源装置。
- さらに、前記インバータの出力ノードと前記出力端子との間に接続された第2の機械スイッチを備え、
前記第1の給電方式が選択された場合において、前記インバータが正常であるときは、前記第2の機械スイッチはオンされ、前記インバータが故障したときは、前記第2の機械スイッチはオフされ、
前記第2の給電方式が選択された場合において、前記第2の交流電源から前記第2の交流電力が正常に供給されているときは、前記第2の機械スイッチはオフされ、前記第2の交流電源からの前記第2の交流電力の供給が停止されたときは、前記第2の機械スイッチはオンされる、請求項1に記載の無停電電源装置。 - さらに、前記第1の交流電源から前記第1の交流電力が正常に供給されている場合は、前記コンバータによって生成された直流電力を前記電力貯蔵装置に供給し、前記第1の交流電源からの前記第1の交流電力の供給が停止された場合は、前記電力貯蔵装置の直流電力を前記インバータに供給する双方向チョッパを備える、請求項1に記載の無停電電源装置。
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Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US11056907B2 (en) | 2017-02-03 | 2021-07-06 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Uninterruptible power supply device |
JP6714157B2 (ja) * | 2017-06-01 | 2020-06-24 | 東芝三菱電機産業システム株式会社 | 電源装置およびそれを用いた電源システム |
JP6608405B2 (ja) * | 2017-07-19 | 2019-11-20 | 矢崎総業株式会社 | 電圧変換ユニット |
JP6958287B2 (ja) | 2017-11-24 | 2021-11-02 | トヨタ自動車株式会社 | 電力制御システムおよび車両 |
US11075540B2 (en) * | 2018-07-23 | 2021-07-27 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Uninterruptible power supply device |
JP6754015B1 (ja) * | 2019-06-25 | 2020-09-09 | 東芝三菱電機産業システム株式会社 | 無停電電源装置 |
JP7381236B2 (ja) * | 2019-07-24 | 2023-11-15 | ファナック株式会社 | 電力変換装置及びその制御方法 |
US20220239146A1 (en) * | 2019-12-26 | 2022-07-28 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Power supply device |
CN113131598A (zh) * | 2020-01-15 | 2021-07-16 | 太阳能安吉科技有限公司 | 多功能不间断电源供应器 |
JP7348091B2 (ja) * | 2020-01-24 | 2023-09-20 | 東芝三菱電機産業システム株式会社 | 無停電電源装置 |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3115143B2 (ja) * | 1993-02-26 | 2000-12-04 | 株式会社東芝 | 無停電電源装置 |
US6201371B1 (en) * | 1998-08-07 | 2001-03-13 | Matsushita Electric Industrial Co., Ltd. | Uninterruptible power system |
JP3636704B2 (ja) * | 2002-10-08 | 2005-04-06 | 川崎重工業株式会社 | 無停電電源装置及び電力供給方法 |
KR20040042529A (ko) | 2002-11-14 | 2004-05-20 | 주식회사 포스코 | 무정전 전원공급장치의 비상절체회로 |
US7265458B2 (en) * | 2005-04-08 | 2007-09-04 | Eaton Power Quality Corporation | Apparatus and methods for coordinated static switch operations for load transfers in uninterruptible power supply systems |
CN2819589Y (zh) * | 2005-07-08 | 2006-09-20 | 北京动力源科技股份有限公司 | 一种具有高速转换特性的静态开关 |
EP1890371A1 (en) * | 2006-08-03 | 2008-02-20 | Michael J. Mosman | UPS system configuration comprising parallel modules being independent of each other |
JP2008283729A (ja) * | 2007-05-08 | 2008-11-20 | Fuji Electric Systems Co Ltd | 無停電電源装置 |
JP5444774B2 (ja) | 2009-03-16 | 2014-03-19 | 富士電機株式会社 | 無停電電源システム |
ES2651273T3 (es) * | 2009-04-17 | 2018-01-25 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Sistema de suministro de energía ininterrumpible |
JP2011045176A (ja) * | 2009-08-20 | 2011-03-03 | Tdk-Lambda Corp | 無停電電源装置、アプリケーションプログラム、コンピュータシステム、バックアップ処理方法およびプログラム |
CA2774063C (en) * | 2009-09-16 | 2016-01-05 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Power conversion system and uninterruptible power supply system |
US8138625B2 (en) * | 2009-09-23 | 2012-03-20 | International Business Machines Corporation | Dual line active automatic transfer switch |
US20110278932A1 (en) * | 2010-05-13 | 2011-11-17 | Eaton Corporation | Uninterruptible power supply systems and methods using isolated interface for variably available power source |
WO2012169046A1 (ja) * | 2011-06-09 | 2012-12-13 | 東芝三菱電機産業システム株式会社 | 無停電電源システム |
CN202183635U (zh) * | 2011-08-08 | 2012-04-04 | 秦皇岛国安电力电子技术有限公司 | 电梯应急供电设备 |
US9906074B2 (en) * | 2011-09-13 | 2018-02-27 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Power supply system |
KR101223260B1 (ko) | 2012-04-13 | 2013-01-17 | 아이. 에프. 텍 (주) | 병렬 무정전 전원 공급 장치의 배터리 충전 시스템 및 방법 |
US9362781B2 (en) * | 2012-09-14 | 2016-06-07 | Chloride Srl | Uninterruptible power supply system with fast transfer for undervoltage source line failures |
JP5882884B2 (ja) * | 2012-12-20 | 2016-03-09 | 東芝三菱電機産業システム株式会社 | 無停電電源装置 |
GB2516414A (en) * | 2013-05-28 | 2015-01-28 | Meb Engineering & Commercial Services Ltd | Residential Domestic Uninterruptable Power Supply |
WO2014193385A2 (en) * | 2013-05-30 | 2014-12-04 | Schneider Electric It Corporation | Uninterruptible power supply control |
CN203368124U (zh) * | 2013-07-11 | 2013-12-25 | Tcl通力电子(惠州)有限公司 | 电源切换电路和Dock设备 |
US9219384B2 (en) * | 2013-08-05 | 2015-12-22 | Rosendin Electric, Inc. | Modular power skid that can meet two or more different datacenter tier ratings |
JP6196108B2 (ja) * | 2013-09-18 | 2017-09-13 | 株式会社東芝 | 無停電電源システムとそのコントローラおよび制御方法 |
CN203537047U (zh) * | 2013-10-25 | 2014-04-09 | 广东易事特电源股份有限公司 | 一种双输入智能供电的不间断电源系统 |
CN103683463A (zh) * | 2013-12-04 | 2014-03-26 | 深圳科士达新能源有限公司 | 一种具有不间断电源功能的混合逆变器 |
WO2016157469A1 (ja) * | 2015-04-01 | 2016-10-06 | 東芝三菱電機産業システム株式会社 | 無停電電源装置およびそれを用いた無停電電源システム |
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