WO2008018131A1 - Power converter and controller using such power converter for electric rolling stock - Google Patents
Power converter and controller using such power converter for electric rolling stock Download PDFInfo
- Publication number
- WO2008018131A1 WO2008018131A1 PCT/JP2006/315760 JP2006315760W WO2008018131A1 WO 2008018131 A1 WO2008018131 A1 WO 2008018131A1 JP 2006315760 W JP2006315760 W JP 2006315760W WO 2008018131 A1 WO2008018131 A1 WO 2008018131A1
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- WIPO (PCT)
- Prior art keywords
- power
- power storage
- capacitor
- switch
- inverter
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2045—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for optimising the use of energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/53—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells in combination with an external power supply, e.g. from overhead contact lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/16—Electric propulsion with power supply external to the vehicle using ac induction motors
- B60L9/18—Electric propulsion with power supply external to the vehicle using ac induction motors fed from dc supply lines
- B60L9/22—Electric propulsion with power supply external to the vehicle using ac induction motors fed from dc supply lines polyphase motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Definitions
- the present invention relates to a power converter and a control device for an electric vehicle using the power converter.
- the present invention relates to a power converter for supplying power to a load by an inverter using both power received from a power source and power of a power storage unit capable of storing DC power, and the power converter.
- the present invention relates to an electric vehicle control device.
- Patent Document 1 it is shown that an electric vehicle is driven without receiving power from an overhead line by the electric power of the power storage element.
- Patent Document 1 Japanese Unexamined Patent Application Publication No. 2006-14395
- the present invention has been made in view of the above points, and in an electric power conversion device having an electric power storage unit and an electric vehicle control device using the electric power conversion device, the electric power storage unit includes: When driving the inverter with only the power of the AC and supplying AC power to the load, Providing a power converter that reduces the loss of energy stored in the storage unit and improves the energy efficiency by effectively using the energy stored in the power storage unit, and a control device for an electric vehicle using the power converter The purpose is to do.
- a power conversion device includes an inverter for supplying power to a load, a capacitor connected between the DC terminals of the inverter, and a power switch provided between one end of the capacitor and a power source. And a DCDC converter provided in parallel with the capacitor, the power storage unit storing DC power, and a rear tuttle and at least one pair of switching elements connected in series for charging and discharging power in the power storage unit And a bypass switch that connects the power storage unit in parallel with the capacitor without the switching element interposed therebetween.
- an inverter that supplies power to the load, a capacitor connected between the DC terminals of the inverter, a power switch provided between one end of the capacitor and the power source, and DC power are stored.
- an electric vehicle control device is provided between an inverter for driving an electric motor, a capacitor connected between the DC terminals of the inverter, and one end of the capacitor and an overhead wire.
- a power switch, a power storage unit for storing DC power, and a rear tuttle and at least one pair of switching elements connected in series for charging and discharging power in the power storage unit are provided in parallel with the capacitor.
- a DC / DC converter and a bino switch that connects the power storage unit in parallel to the capacitor without the switching element interposed therebetween.
- an inverter for driving the motor a capacitor connected between the DC terminals of the inverter, a power switch provided between one end of the capacitor and the overhead wire, and a power storage for storing DC power And the rear tuttle and the power storage unit that charge and discharge power.
- a DCDC converter provided in parallel with the capacitor, and the power storage unit is connected in parallel to the capacitor when the power switch is off.
- the DCDC converter when the inverter is driven only by the power of the power storage unit and the power is supplied to the load, the DCDC converter
- the DCDC converter it is possible to obtain a power conversion device that can reduce the energy loss in the power storage and can effectively use the energy stored in the power storage unit, and an electric vehicle control device that uses this power conversion device.
- the power conversion device of the present invention when the inverter is driven only by the power of the power storage unit and power is supplied to the load, Without adding a bypass switch, the power storage unit and the inverter can be connected via a switching element and a rear tuttle, reducing the energy loss in the DCDC converter and effectively using the stored energy in the power storage unit At the same time, it is possible to prevent the ripple current from flowing into the power storage unit by the rear tuttle, and it is possible to reduce the loss and extend the life of the power storage unit.
- FIG. 1 A power conversion device according to Embodiment 1 of the present invention and this power conversion device are used.
- FIG. 2 is a diagram for explaining the transition from the overhead power storage combined mode to the power storage operation mode in Embodiment 1 of the present invention.
- FIG. 3 is a diagram illustrating a transition from a power storage operation mode to an overhead power storage combined mode in Embodiment 1 of the present invention.
- FIG. 4 shows a power conversion device according to Embodiment 2 of the present invention and the power conversion device.
- FIG. 5 shows a power conversion device according to Embodiment 3 of the present invention and the power conversion device.
- FIG. 6 shows a power conversion device according to Embodiment 4 of the present invention and this power conversion device.
- FIG. 7 is a diagram for explaining the transition from the overhead power storage combined mode to the power storage operation mode in Embodiment 4 of the present invention.
- FIG. 8 is a diagram for explaining the transition from the power storage operation mode to the overhead line power storage combined mode in the fourth embodiment of the present invention.
- FIG. 9 shows a power conversion device according to Embodiment 5 of the present invention and this power conversion device.
- FIG. 10 shows a power conversion device according to Embodiment 6 of the present invention and this power conversion device.
- Switching element 20: Rear tuttle
- 21 Capacitor
- FIG. 1 is a diagram showing a configuration of an electric vehicle control apparatus according to Embodiment 1 of the present invention.
- the electric power received from the overhead line 1 serving as the power source via the current collector 2 is input to the control device 3 of the electric vehicle.
- the electric vehicle control device 3 is connected to an AC electric motor 6 that is a load, and is configured to drive the electric motor 6 to run the electric vehicle.
- the negative current from the control device 3 of the electric vehicle returns to the rail 5 through the wheel 4.
- the electric vehicle control device 3 includes a circuit that supplies the power received from the overhead line 1 to the inverter 13 to which the capacitor 12 is connected in parallel through the switch S1 that is the power switch and the rear tuttle 11, and the power A circuit that supplies DC power from the power storage element 14 as a storage unit to the inverter 13 through the DCDC converter 15A and power from the power storage element 14
- the switch S 2 is a bypass switch for supplying the inverter 13 without going through the DCDC converter 15A.
- the power storage element 14 is a secondary battery, an electric double layer capacitor, or the like.
- switches Sl and S2 it is preferable to use switches having mechanical contacts.
- the effect of the present invention is greatly impaired even if the switches Sl and S2 are constituted by electronic switches composed of semiconductor elements with low conduction loss. It will never be.
- a case where a switch having a mechanical contact is used will be described as an example.
- the DCDC converter 15A performs bidirectional power control from the power storage element 14 to the inverter 13 and from the inverter 13 to the power storage element 14 under the condition that the inverter input voltage EFC is larger than the voltage EB of the power storage element 14.
- This is a so-called bidirectional step-down DCDC converter circuit composed of switching elements 16 and 17 that perform PWM operation and a rear tuttle 20. Since the operation is already known, the description is omitted.
- the switch S2 is provided to directly perform the power flow between the power storage element 14 and the inverter 13 without using the DCDC converter 15A, and is the center of the present invention.
- the overhead power storage combined mode the operation in the mode in which the electric vehicle travels by sending and receiving arbitrary power between both the overhead line 1 and the power storage element 14 (hereinafter referred to as the overhead power storage combined mode). Then, when the electric vehicle accelerates, the power from the overhead line 1 is supplied to the inverter 13, and the power from the power storage element 14 is adjusted to an optimum value by the DCDC converter 15A and supplied to the inverter 13. Then, the electric motor 6 is driven by the sum of both electric powers.
- the DCDC converter 15A operates to suppress the discharge power of 14 power storage elements, and more power is received from the overhead line 1. Is done.
- the DCDC converter 15A operates to supply a large amount of power from the power storage element 14.
- the electric motor 6 is driven while the power of both the overhead line 1 and the power storage element 14 is optimally supplied with power, and the electric vehicle is driven.
- the electric motor 6 When the electric vehicle applies the regenerative brake, the electric motor 6 is in a regenerative operation, and the DCDC converter 15A operates to appropriately distribute the regenerative power from the inverter 13 to the overhead line 1 and the power storage element 14. .
- the DCDC converter 15A when the amount of energy stored in the power storage element 14 is insufficient, or when the overhead wire 1 has no regenerative load and cannot be fully regenerated, more regenerative power is regenerated in the power storage element 14.
- the DCDC converter 15A When the DCDC converter 15A is operating and the stored energy amount of the power storage element 14 is excessive, the DCDC converter 15A restricts the regenerative power to the power storage element 14 and most of the regenerative power is regenerated to the overhead line 1. It becomes the operation which is done.
- the regenerative power from the electric motor 6 is optimally regenerated to the overhead line 1 and the power storage element 14, and the regenerative brake of the electric vehicle functions.
- the power storage operation mode the operation in the mode in which the electric vehicle travels only with the electric power from the power storage element 14 (hereinafter referred to as the power storage operation mode) will be described.
- This mode assumes that the electric vehicle travels in a section where overhead line 1 is not laid, or that the electric vehicle travels in a section where overhead line 1 is laid but power line 1 is out of power. Yes.
- switch S1 is turned off, DCDC converter 15A is turned off (switching elements 16 and 17 are turned off), and switch S2 is turned on.
- the electric power from the power storage element 14 is supplied directly to the inverter 13 via the switch S2 without passing through the DCDC converter 15A, and the electric motor 6 is driven.
- the electric motor 6 is driven while being supplied with electric power from the electric power storage element 14, and the electric vehicle can be run on a route without the overhead line 1.
- FIG. 2 is a diagram for explaining the transition from the overhead power storage combined mode to the power storage operation mode in the first embodiment.
- the voltage EB of the power storage element 14 is lower than the inverter input voltage EFC. As described above, this is because the DCDC converter 15A has the inverter input voltage EFC equal to the power storage element 14.
- the voltage EB of the power storage element 14 is set to be lower than the lower limit of fluctuation of the inverter input voltage EFC that varies according to the overhead line voltage ESO. Small, set to a value!
- the nominal value of the general overhead line voltage ESO is 600V for trams, 750V for many subways, and 1500V for suburban railway lines.
- the DC / DC converter 15A is controlled so that the power storage element 14 bears most or all of the power to reduce the set value or less, or the inverter 13 power, and the current in the switch S1 is sufficiently reduced (below the set value). Preferably after).
- the DCDC converter 15 A is controlled so that the inverter input voltage EFC and the voltage EB of the power storage element 14 coincide.
- the DCDC converter 15A is controlled so that the inverter input voltage EFC and the voltage EB of the power storage element 14 are maintained equal.
- FIG. 3 illustrates the operation from the power storage operation mode according to Embodiment 1 of the present invention to the overhead power storage combined mode.
- the inverter input voltage EFC is equal to the voltage EB of the power storage element 14.
- switch S2 is turned off and DCDC converter 15A is started at the same time, and switching elements 16 and 17 are operated in PWM.
- the DCDC converter 15A is boosted and the voltage EB of the power storage element 14 is boosted to control the inverter input voltage EFC to coincide with the overhead line voltage ESO.
- the inverter input voltage EFC matches the overhead line voltage ESO.
- the contact of switch S1 can be prevented from becoming rough.
- the loss of the DCDC converter 15A is generally about 3%. Taking the case of a DCDC converter with a capacity of 500KW, which is the minimum required to drive one electric car, the maximum loss is about 15KW. The average loss taking into account the electric vehicle's driving pattern (acceleration, coasting, regenerative braking) is about 5KW.
- the amount of energy stored in the electric power storage element 14 that can be installed in an electric vehicle is limited to around 1OKWh (per car), although it depends on the installation space of the electric vehicle. Means that the stored energy fully charged in the power storage element 14 is consumed in about 2 hours.
- switch S2 is turned on in the power storage operation mode, and power is transferred between power storage element 14 and inverter 13 without DCDC converter 15A. Since the configuration is such that the energy loss in the DCDC converter 15A is increased, the energy stored in the power storage element 14 can be used to the maximum extent possible for running the electric vehicle.
- FIG. 4 is a diagram showing a configuration example of an electric vehicle control apparatus according to Embodiment 2 of the present invention.
- the configuration shown in FIG. 4 has one end of the connection point of switch S2 from the positive side of power storage element 14 to the connection point of switching elements 16 and 17.
- the feature is that it has been changed.
- the switch S2 is turned on, the power storage element 14 is connected in parallel with the capacitor 12 without passing through the switching elements 16 and 17.
- the power storage element 14 and the inverter 13 can be connected via the reactor 20.
- Ripple current generated by PWM operation of inverter 13 by connecting power storage element 14 and inverter 13 via rear tuttle 20 Can be prevented from flowing to the power storage element 14.
- the internal heat generation thereby increases, and this shortens the life of the power storage element 14.
- the energy loss at the rear tuttle 20 slightly increases, the loss at the power storage element 14 can be reduced and the life can be extended. It is done.
- control apparatus for an electric vehicle configured as described above is the same as that shown in the first embodiment (FIGS. 2 and 3), and the description thereof will be omitted.
- the switch S2 in the power storage operation mode, the switch S2 is turned on, and power is transferred between the power storage element 14 and the inverter 13 without passing through the switching element 16.
- the conduction loss and switching loss of the switching elements 16 and 17 are eliminated, and the stored energy of the power storage element 14 can be used to the maximum extent possible for electric vehicle travel.
- ripple current can be prevented from flowing to the power storage element 14 by the rear tuttle 20, it is possible to reduce the loss in the power storage element 14 and extend the life.
- FIG. 5 is a diagram showing a configuration example of an electric vehicle control apparatus according to Embodiment 3 of the present invention.
- the configuration shown in FIG. 5 is characterized in that the switch S2 is deleted and an operation mode is added to the DCDC converter 15A.
- the other parts are the same as those in the first embodiment, so the same reference numerals are given and the description is omitted.
- the feature of the third embodiment is that this function is substituted by the switching element 16 of the DC / DC converter 15A without providing the switch S2.
- the switching element 16 is fixed on (the switching element 17 is fixed off) at the timing when the switch S2 already described in the first embodiment (FIGS. 2 and 3) is turned on.
- the power storage element 14 and the inverter 13 can be connected via the switching element 16 and the rear tail 20.
- the loss generated in the DCDC converter 15A is only the conduction loss between the rear tuttle 20 and the switching element 16, and the switching loss and switching of the switching element 16 that occur when the DCDC converter 15A is normally operated. Since the conduction loss and switching loss of the element 17 and the iron loss due to the switching current in the rear tuttle 20 are eliminated, the loss of the system can be reduced. In addition, it is not necessary to add the switch S2.
- the power storage element 14 and the inverter 13 are connected via the switching element 16 and the rear tuttle 20 without adding the switch S2. Therefore, the loss in the DCDC converter 15A can be reduced, and the stored energy of the power storage element 14 can be used to the maximum extent possible for running an electric vehicle. Further, since the ripple current can be prevented from flowing to the power storage element 14 by the rear tuttle 20, it is possible to reduce the loss in the power storage element 14 and extend the life.
- FIG. 6 is a diagram illustrating a configuration example of an electric vehicle control device according to Embodiment 4 of the present invention.
- the configuration of the fourth embodiment shown in FIG. 6 is characterized in that the DC DC converter 15A is changed to a DCDC converter 15B as compared with the configuration of the first embodiment shown in FIG.
- the other parts are the same as those of the first embodiment, and thus the same reference numerals are given and description thereof is omitted.
- a DCDC converter 15B includes a so-called bidirectional step-up / step-down DCDC converter circuit including switching elements 16 to 19 that perform PWM operation, rear tuttles 20 and 22, and a capacitor 21, and a power storage element Regardless of the relationship between the voltage EB of 14 and the inverter input voltage EFC, the power control is possible in any direction.
- the voltage EB of the power storage element 14 can be set regardless of the lower limit of fluctuation of the overhead line voltage ESO, and the voltage EB of the power storage element 14 is equal to the nominal value of the overhead line voltage ESO. It is also possible to set the overhead voltage ESO higher than the nominal value.
- the voltage EB of the power storage element 14 must be set lower than the overhead line voltage ESO.
- the inverter input voltage EFC is lower than that in the overhead power storage combined mode and the generated torque of the motor 6 is reduced, or when the same power is supplied to the inverter 13, the power storage element 14 There is a possibility that current increases and loss increases.
- the configuration of the fourth embodiment it is possible to ensure the inverter input voltage EFC in the power storage operation mode equal to or higher than that in the overhead power storage combined mode.
- FIG. 7 is a diagram for explaining the transition from the overhead power storage combined mode to the power storage operation mode in the fourth embodiment of the present invention.
- switch S1 and DCCC converter 15B are turned on (switching elements 16 to 19 are in PWM operation), so overhead voltage ESO is applied to capacitor 12
- the voltage EB of the power storage element 14 applied is stepped down by the DCDC converter 15B and applied to the capacitor 12. For this reason, the input voltage ES after the switch S1 is equal to the overhead voltage ESO, and the inverter input voltage EFC is equal to the input voltage ES.
- switch S1 is turned off when the power to reduce the output of inverter 13 to a set value or less, and most or all of the power of inverter 13 is stored in power. It is preferable to control the load of the child 14 and reduce the current of the switch S1 sufficiently (after decreasing it below the set value).
- the DCDC converter 15B is boosted so that the inverter input voltage EFC matches the voltage EB of the power storage element 14.
- the DCDC converter 15B is controlled so that the inverter input voltage EFC and the voltage EB of the power storage element 14 are maintained equal. To do.
- FIG. 8 is a diagram illustrating the transition from the power storage operation mode to the overhead power storage combined mode according to the fourth embodiment.
- switch S2 is turned off and DCDC converter 15B is activated at the same time.
- DCDC converter 15B is stepped down, voltage EB of power storage element 14 is stepped down and supplied to capacitor 12, and inverter input voltage EFC matches overhead voltage ESO Control to do.
- the inverter input voltage EFC matches the overhead line voltage ESO.
- the inverter 13 can operate in the overhead power storage combined mode in which power is transferred between the overhead line 1 and the power storage element 14.
- the DCDC converter 15B is stepped down so that the inverter input voltage EFC matches the overhead line voltage ESO, and the switch S1 is turned on by sufficiently reducing the voltage difference between the terminals of the switch S1. It is possible to avoid inrush current due to voltage difference and roughening of the contact point of switch S1.
- the DCDC converter 15B is capable of power control regardless of the magnitude relationship between the voltage EB of the power storage element 14 and the inverter input voltage EFC, as compared with the DCDC converter 15A of the first embodiment.
- the loss is larger than that of the DCDC converter 15A due to the large number of switching elements.
- the switch S2 in the power storage operation mode, the switch S2 is turned on, and power is transferred between the power storage element 14 and the inverter 13 without using the DCDC converter 15B.
- the energy loss in the converter 15B is eliminated, and the energy stored in the power storage element 14 can be used to the maximum extent possible for the electric vehicle.
- FIG. 9 is a diagram showing a configuration example of an electric vehicle control device according to Embodiment 5 of the present invention. is there.
- the configuration of the fifth embodiment shown in FIG. 9 is such that one end of the connection portion of the switch S2 is connected to the rear tuttle 22 and the switch from the positive side of the power storage element 14. It is characterized in that it is changed to the connection point of the ring element 18.
- the other parts are the same as those in the fourth embodiment, so the same reference numerals are given and the description is omitted.
- the power storage element 14 and the inverter 13 can be connected via the reactor 22.
- the loss at the rear tuttle 22 is increased, the loss at the power storage element 14 is reduced and the life can be extended. can get.
- control apparatus for an electric vehicle configured as described above is the same as that shown in the fourth embodiment, and thus the description thereof is omitted.
- switch S2 is turned on in the power storage operation mode, and power storage element 14 and inverter 13 are not connected via switching elements 16-19 and rear tuttle 20. Power transmission and reception between the switching elements 16-19, the loss of conduction and switching losses, and the loss of the rear tuttle 20 are eliminated, and the energy stored in the power storage element 14 can be used to the maximum extent possible for running an electric vehicle. .
- ripple current can be prevented from flowing to the power storage element 14 by the rear tuttle 22, it is possible to reduce the loss in the power storage element 14 and extend the life.
- FIG. 10 is a diagram showing a configuration example of an electric vehicle control apparatus according to Embodiment 6 of the present invention.
- the configuration of the sixth embodiment shown in FIG. 10 is characterized in that the switch S2 is deleted and an operation mode is added to the DCDC converter 15B. It is.
- the other parts are the same as in the configuration of the fourth embodiment, so the same reference numerals are given and the description is omitted.
- the feature of the configuration of the sixth embodiment is that this function is substituted by switching elements 16 and 18 without providing switch S2.
- the switching elements 16 and 18 are fixed to be on (switching elements 17 and 19 are fixed to be off) at the timing when the switch S2 described in the fourth embodiment (FIGS. 7 and 8) is turned on. is there.
- the switching elements 16 and 18 By fixing the switching elements 16 and 18 to ON, the power storage element 14 and the inverter 13 can be connected via the switching elements 16 and 18 and the rear tuttles 20 and 22.
- the loss generated in the DCDC converter 15B is only the conduction loss between the rear tuttles 20, 22 and the switching elements 16, 18, and the switching element generated when the DCDC converter 15B is normally operated.
- the system loss can be reduced because there is no switching loss in 16, 18; conduction loss and switching loss in switching elements 17 and 19; and iron loss due to switching current in the rear tuttles 20 and 22.
- ripple current can be prevented from flowing through the power storage element 14 by the rear tuttles 20 and 22, loss in the power storage element 14 can be reduced and the life can be extended.
- the present invention may be applied to a power converter configured to receive AC power from a current collector and convert it to DC power with a converter and then input it to the inverter 13.
- the output of the inverter 13 is connected to a load such as a vehicle air conditioner or a lighting device via a transformer and a smoothing circuit other than the motor, and the inverter is connected to a constant voltage and constant frequency.
- a so-called auxiliary power supply device that supplies constant voltage 'constant frequency power to the load by performing several operations.
- the content of the invention is described by taking as an example the case where the power conversion device is applied to the electric railway field.
- the application field of the present invention is not limited to this, It can be applied to various related fields such as elevators and power systems.
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800554862A CN101501973B (zh) | 2006-08-09 | 2006-08-09 | 电动车控制装置 |
US12/375,864 US7977819B2 (en) | 2006-08-09 | 2006-08-09 | Power converter and controller using such power converter for electric rolling stock |
JP2006545350A JP4440936B2 (ja) | 2006-08-09 | 2006-08-09 | 電気車の制御装置 |
EP06782576A EP2051358A4 (en) | 2006-08-09 | 2006-08-09 | POWER CONVERTER AND CONTROLLER USING SUCH POWER CONVERTER FOR ELECTRICAL ROLLING EQUIPMENT |
PCT/JP2006/315760 WO2008018131A1 (en) | 2006-08-09 | 2006-08-09 | Power converter and controller using such power converter for electric rolling stock |
KR1020087029697A KR101003657B1 (ko) | 2006-08-09 | 2006-08-09 | 전력 변환 장치 및 이 전력 변환 장치를 이용한 전기차의 제어 장치 |
CA2657758A CA2657758C (en) | 2006-08-09 | 2006-08-09 | Power converter and controller using such converter for electric rolling stock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/315760 WO2008018131A1 (en) | 2006-08-09 | 2006-08-09 | Power converter and controller using such power converter for electric rolling stock |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008018131A1 true WO2008018131A1 (en) | 2008-02-14 |
Family
ID=39032677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/315760 WO2008018131A1 (en) | 2006-08-09 | 2006-08-09 | Power converter and controller using such power converter for electric rolling stock |
Country Status (7)
Country | Link |
---|---|
US (1) | US7977819B2 (ja) |
EP (1) | EP2051358A4 (ja) |
JP (1) | JP4440936B2 (ja) |
KR (1) | KR101003657B1 (ja) |
CN (1) | CN101501973B (ja) |
CA (1) | CA2657758C (ja) |
WO (1) | WO2008018131A1 (ja) |
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JP2009165315A (ja) * | 2008-01-09 | 2009-07-23 | Kinki Sharyo Co Ltd | 鉄道車両 |
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JP7227730B2 (ja) | 2018-10-25 | 2023-02-22 | 公益財団法人鉄道総合技術研究所 | 電気車用電源システム、電力供給制御方法および追加電源システム |
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Also Published As
Publication number | Publication date |
---|---|
EP2051358A1 (en) | 2009-04-22 |
JP4440936B2 (ja) | 2010-03-24 |
CN101501973B (zh) | 2012-06-06 |
EP2051358A4 (en) | 2011-04-20 |
KR101003657B1 (ko) | 2010-12-23 |
US7977819B2 (en) | 2011-07-12 |
KR20090007630A (ko) | 2009-01-19 |
CA2657758C (en) | 2013-03-26 |
CN101501973A (zh) | 2009-08-05 |
US20090322148A1 (en) | 2009-12-31 |
JPWO2008018131A1 (ja) | 2009-12-24 |
CA2657758A1 (en) | 2008-02-14 |
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