WO2017115539A1 - Système de conversion de courant - Google Patents

Système de conversion de courant Download PDF

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Publication number
WO2017115539A1
WO2017115539A1 PCT/JP2016/081042 JP2016081042W WO2017115539A1 WO 2017115539 A1 WO2017115539 A1 WO 2017115539A1 JP 2016081042 W JP2016081042 W JP 2016081042W WO 2017115539 A1 WO2017115539 A1 WO 2017115539A1
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WIPO (PCT)
Prior art keywords
potential side
power supply
circuit
supply circuit
bus
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Ceased
Application number
PCT/JP2016/081042
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English (en)
Japanese (ja)
Inventor
達也 北村
竹島　由浩
山田　正樹
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP2017502737A priority Critical patent/JP6113391B1/ja
Publication of WO2017115539A1 publication Critical patent/WO2017115539A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Definitions

  • the present invention relates to a power conversion system including a power conversion circuit and at least two DC power supply circuits.
  • the conventional power conversion system includes an inverter circuit that is a power conversion circuit and a first DC power source and a second DC power source that are connected in parallel to the inverter circuit via a DC bus. Furthermore, a switch is provided between the first DC power supply and the inverter circuit, and it is possible to select the first power supply or the second power supply as a power supply source to the inverter circuit by turning on and off the switch (for example, Patent Document 1).
  • the impedance connected to the inverter circuit changes, resulting in a resonance state.
  • the resonance state occurs, an AC voltage may be superimposed on the DC bus, and the AC voltage may not attenuate for a long time.
  • the output power from the inverter circuit may not be stable, and the motor may not be controlled.
  • a conventional method of connecting a smoothing capacitor between the high potential side DC bus and the low potential side DC bus, and each of the first power source and the second power source are used.
  • a conventional method of connecting a smoothing capacitor is conceivable.
  • the conventional method needs to use a capacitor having a relatively large volume, and may require a relatively large installation space.
  • installation space may be restricted. For example, when it is mounted on a vehicle, etc., and it is not possible to secure a sufficient installation space for installing the capacitor.
  • an AC voltage is superimposed on the DC bus due to the resonance state. There was a problem that could not be suppressed.
  • the present invention has been made to solve the above-described problems, and even when a sufficient installation space cannot be ensured, an inverter circuit for controlling a motor or the like is suppressed by suppressing an AC voltage from being superimposed on a DC bus due to a resonance state. It is an object of the present invention to provide a power conversion system that does not cause a failure of the connected devices.
  • the power conversion system of the present invention includes a power conversion circuit that converts DC power into AC power, a DC bus having a high potential side and a low potential side connected to the power conversion circuit, and a high potential side and a low potential side.
  • a first DC power supply circuit and a second DC power supply circuit connected between the DC buses are provided.
  • a resonance suppression circuit connected in parallel to at least one of the first DC power supply circuit and the second DC power supply circuit is provided.
  • the resonance suppression circuit includes a resonance frequency and a second DC of a current path that returns from the high potential side of the first DC power supply circuit to the low potential side of the first DC power supply circuit via the power conversion circuit. It has a cut-off frequency that is lower than both the resonance frequency of the current path that returns from the high potential side of the power supply circuit to the low potential side of the second DC power supply circuit via the power conversion circuit.
  • the resonance suppression circuit is connected in parallel to at least one of the first DC power supply circuit and the second DC power supply circuit, thereby suppressing the AC voltage superimposed on the DC bus due to the resonance state. Therefore, even if a sufficient installation space cannot be secured, a power conversion system having high reliability is provided so that a connected device of an inverter circuit such as a motor control is not disabled.
  • FIG. 1 is an electrical connection diagram showing a power conversion system 100 according to Embodiment 1 for carrying out the present invention.
  • a power conversion system 100 according to the present invention includes an inverter circuit 1, a DC bus 2, a first power supply circuit 3, a second power supply circuit 4, and a resonance suppression circuit 5.
  • the inverter circuit 1 is a power conversion circuit as a component of the present invention
  • the first power supply circuit 3 is a first DC power supply circuit as a component of the present invention
  • the second power supply circuit 4 is 2 is a second DC power supply circuit of the constituent elements of the present invention.
  • the high potential side DC terminal 1p of the inverter circuit 1 is connected to the high potential side DC bus 2p of the DC bus 2, and the low potential side DC terminal 1n of the inverter circuit 1 is connected to the low potential side DC bus 2n of the DC bus 2. Is done. Further, the high potential side of the first power supply circuit 3 is connected to the high potential side DC bus 2p, and the low potential side of the first power supply circuit 3 is connected to the low potential side DC bus 2n.
  • the high potential side of the second power supply circuit 4 is connected to the high potential side DC bus 2p, and the low potential side of the second power supply circuit 4 is connected to the low potential side DC bus 2n.
  • the second power supply circuit 4 is set to have a higher internal impedance when power is supplied (when conducting) than the first power supply circuit 3, and is connected in parallel to the second power supply circuit 4 without the DC bus 2. Further, the resonance suppression circuit 5 is connected. Further, the u-phase AC line terminal 1 u of the inverter circuit 1 is connected to the u-phase terminal (not shown) of the motor 6, and the v-phase AC line terminal 1 v of the inverter circuit 1 is connected to the v-phase terminal (not shown) of the motor 6. The w-phase AC line terminal 1w of the inverter circuit 1 is connected to a w-phase terminal (not shown) of the motor 6.
  • a parasitic inductance 2 i exists in series with the DC bus 2, and a parasitic capacitance 1 c exists between the high potential side DC terminal 1 p and the low potential side DC terminal 1 n of the inverter circuit 1. Details of these will be described later.
  • the first power supply circuit 3 includes a battery 3b and a switch 3s.
  • the high potential side of the battery 3b is connected to one end of the switch 3s, the low potential side of the battery 3b is connected to the low potential side DC bus 2n, and the other end of the switch 3s is connected to the high potential side DC bus 2p.
  • the switch 3s is a second switch that is a component of the present invention.
  • the second power supply circuit 4 includes a battery 4b.
  • the low potential side of the battery 4b is connected to the low potential side DC bus 2n, and the high potential side of the battery 4b is connected to the high potential side DC bus 2p.
  • the resonance suppression circuit 5 includes a resistor 5r and a capacitor 5c.
  • the resistor 5r and the capacitor 5c are connected in series, one end of the capacitor 5c is connected to the low potential side DC bus 2n, and one end of the resistor 5r is connected to the high potential side DC bus 2p.
  • the operation of the power conversion system 100 according to the first embodiment will be described.
  • the switch 3s When the switch 3s is in the OFF state, the first power supply circuit 3 does not supply DC power to the inverter circuit 1, and only the second power supply circuit 4 supplies DC power to the inverter circuit 1 via the DC bus 2. Supply.
  • both the first power circuit 3 and the second power circuit 4 supply DC power to the inverter circuit 1 through the DC bus 2.
  • a signal corresponding to the motor operation command value (rotation speed, torque, etc.) of the motor 6 is given to the control circuit (not shown) of the inverter circuit 1 from an external control device (not shown).
  • the control circuit executes an on / off operation of the semiconductor elements constituting the inverter circuit 1 based on the motor operation command value.
  • a three-phase AC voltage having an amplitude and a frequency corresponding to the motor operation is output to the motor 6 via the u-phase AC line terminal 1u, the v-phase AC terminal 1v, and the w-phase AC terminal 1w.
  • the motor 6 rotates by converting the transmitted power into electromagnetic force.
  • the switch 3s When the switch 3s is in an off state and only the first power supply circuit 4 is supplying DC power, the switch 3s is turned on by a command from the control device in accordance with a change in the motor operation command value of the motor 6.
  • DC power may be supplied from the first power supply circuit 3 and the second power supply circuit 4.
  • the case where the power conversion system in this Embodiment 1 is mounted in a vehicle is mentioned.
  • the switch 3s when the switch 3s is initially in the on state, power is supplied to the inverter circuit 1 from both the first power supply circuit 3 and the second power supply circuit 4, and then the power is supplied when decelerating by accelerator work.
  • the external control device switches the switch 3s from the on state to the off state according to the switch operation command value of the switch 3s.
  • the suppression effect of the resonance state of the resonance suppression circuit 5 will be described.
  • a parasitic inductance 2i in the current path for supplying DC power to the inverter circuit 1 through the DC bus 2, and the high potential side DC terminal 1p and the low potential side DC terminal 1n of the inverter circuit 1 are present.
  • a parasitic capacitance 1c between the two, there is a parasitic capacitance 1c.
  • a resonance circuit is formed by series connection of the parasitic inductance 2i and the parasitic capacitance 1c.
  • This change in impedance of the current path is a cause, and the resonance circuit generates a resonance state in a specific frequency range, and the AC voltage in the specific frequency range due to this resonance state is superimposed on the DC bus 2 and is not attenuated for a relatively long time. There is. That is, an AC voltage may be superimposed between the high potential side DC terminal 1p and the low potential side DC terminal 1n of the inverter circuit 1.
  • the values of the resistance value R of the resistor 5r and the electric capacitance value C of the capacitor 5c of the resonance suppression circuit 5 are appropriately set in correspondence with the specific frequency range. Therefore, the AC voltage in the specific frequency range can be rapidly attenuated.
  • a path of a current flowing through the side DC bus 2n to the low potential side of the first power supply circuit 3 is defined as a path 1, and a resonance frequency of the path 1 is defined as f1.
  • the path of the current flowing through the side DC bus 2n to the low potential side of the second power supply circuit 4 is defined as path 2, and the resonance frequency of path 2 is defined as f2.
  • the resonance frequency f1 and the resonance frequency f2 can be easily obtained by measuring the frequency characteristics of the path 1 and the path 2.
  • the cutoff frequency fc of the resonance suppression circuit 5 is 1 / (2 ⁇ RC) from the resistance value R of the resistor 5r, the capacitor 5c, and the capacitance value C. Therefore, the AC voltage superimposed on the DC bus 2 in the resonance state is rapidly attenuated by setting the resistance value R and the capacitance value C so that the cutoff frequency fc is lower than the resonance frequency f1 and the resonance frequency f2. be able to. Further, the resonance suppression circuit 5 is connected to the first power supply circuit 3 or the second power supply circuit 4 in parallel without the DC bus 2, so that it is not affected by the parasitic inductance 2 i of the DC bus 2. The AC voltage superimposed on the DC bus 2 in the resonance state can be rapidly attenuated.
  • the amount of current flowing through the resonance suppression circuit 5 is greater when the resonance suppression circuit 5 is connected in parallel to the relatively higher internal impedance of the first power supply circuit 3 and the second power supply circuit 4. Since it increases, the superimposed AC voltage can be attenuated more rapidly.
  • the second power supply circuit 4 is set to have a higher internal impedance when conducting than the first power supply circuit 3, and the resonance suppression circuit 5 is used as the second power supply circuit 4. Connected in parallel.
  • the capacitance value of the smoothing capacitor of the conventional method is Cn
  • the cutoff frequency in this case is the same value as the cutoff frequency fc of the present invention.
  • the cutoff frequency fc is set by a value obtained by multiplying the resistance value R of the resistor 5r, the capacitor 5c, and the capacitance value C.
  • Cn >> C can be established by appropriately selecting the resistance value R of the resistor 5r.
  • the resistor 5r has a smaller component volume than the capacitor, the combined volume of the resistance value R of the resistor 5r and the capacitor 5c is smaller than that of the conventional method. That is, even when a sufficient installation space cannot be secured, it is possible to suppress the superposition of the AC voltage on the DC bus due to the resonance state.
  • the resonance suppression circuit 5 is always connected in parallel to the inverter circuit 1 via the DC bus 2 even when the switch 3s is in an on state or an off state, so that superposition of noise due to disturbance to the inverter circuit 1 is also suppressed. be able to. Further, even when the inverter circuit 1 causes the generation of noise, the superposition of noise can be suppressed.
  • the impedance of the inverter circuit 1 may be changed even during rapid acceleration such as when the motor 6 is started or during rapid deceleration of the motor 6. That is, even when the switch 3s is not switched on and off, the impedance of the current path changes, and an AC voltage due to a resonance state is generated between the high potential side DC terminal 1p and the low potential side DC terminal 1n of the inverter circuit 1. May overlap. Even in such a case, since the resonance suppression circuit 5 is always connected in parallel to the inverter circuit 1 via the DC bus 2, it is possible to suppress the superposition of the AC voltage on the DC bus 2.
  • the resonance suppression circuit 5 by installing the resonance suppression circuit 5 as described above, even when a sufficient installation space cannot be secured, the AC voltage is prevented from being superimposed on the DC bus due to the resonance state, and the motor Therefore, it is possible to provide a power conversion system having high reliability that does not impair the inverter circuit connection device such as control of the above.
  • FIG. 1 the switch 3s is provided only in the first power supply circuit 3, and the switch 3s is turned on and off, so that the power supply source to the inverter circuit 1 is the first power supply circuit 3 and the first power supply circuit 3.
  • the power conversion system 100 that selects both of the two power supply circuits 4 or only the second power supply circuit 4 has been described.
  • the second power supply circuit 4 is also provided with a switch 4s, and the power supply source to the inverter circuit 1 is used as both the first power supply circuit 3 and the second power supply circuit 4, A power conversion system 101 that can be selected from only the power supply circuit 3 or only the second power supply circuit 4 will be described.
  • the second power supply circuit 4 includes the switch 4s and the battery 4b.
  • the impedance of the current path changes with the change of the current path.
  • This change in impedance of the current path is an incentive, and the resonance circuit may generate a resonance state in a specific frequency range, and an AC voltage in this specific frequency range may be superimposed on the DC bus 2.
  • the resonance suppression circuit 5 has the effect of rapidly attenuating the AC voltage in a specific frequency range, and has a higher internal impedance when conducting compared to the first power supply circuit 3 as described above. Since they are connected in parallel, the superimposed AC voltage can be attenuated more rapidly.
  • the resonance suppression circuit 5 is always connected in parallel to the inverter circuit 1 via the DC bus 2 in any of the switch state 1 to the switch state 3, so that the above-described resonance voltage can be suppressed from being superimposed.
  • the superimposition of noise due to disturbance to the inverter circuit 1 can also be suppressed. Further, even when the inverter circuit 1 causes the generation of noise, the superposition of noise can be suppressed.
  • the impedance of the inverter circuit 1 may be changed even during rapid acceleration such as when the motor 6 is started or during rapid deceleration of the motor 6. That is, even when the switch 3s and the switch 4s are not switched on and off, the impedance of the current path changes, and a resonance state is generated between the high potential side DC terminal 1p and the low potential side DC terminal 1n of the inverter circuit 1. AC voltage may be superimposed. Even in such a case, since the resonance suppression circuit 5 is always connected in parallel to the inverter circuit 1 via the DC bus 2, the superposition of AC voltage can be suppressed.
  • the installation of the resonance suppression circuit 5 as described above prevents the AC voltage from being superimposed on the DC bus due to the resonance state even when a sufficient installation space cannot be secured.
  • Embodiment 3 In the first and second embodiments, a power conversion system having a switch in one of the first power supply circuit 3 and the second power supply circuit 4 or in both the first power supply circuit 3 and the second power supply circuit 4 has been described. .
  • a switch for selecting a power supply circuit may be provided between the DC buses due to limitations in installation space.
  • a power conversion system 102 having a switch between DC bus lines will be described.
  • FIG. 3 is an electrical connection diagram showing a power conversion system 102 according to Embodiment 3 for carrying out the present invention.
  • the same reference numerals or the same reference numerals as those in FIG. 1 are the same or equivalent to the components shown in the first embodiment, and detailed description thereof will be omitted.
  • the power conversion system 102 of the present invention includes an inverter circuit 1, a first DC bus 21, a second DC bus 22, a switch 2 s, a first power circuit 3, a second power circuit 4, and a resonance suppression circuit 5. Including. Note that the switch 2s is one of the constituent elements of the present invention.
  • the high potential side DC terminal 1p of the inverter circuit 1 is connected to the high potential side first DC bus 21p of the first DC bus 21 and the low potential side DC terminal 1n of the inverter circuit 1 is connected to the first DC bus 21. Are connected to the first DC bus 21n.
  • the high potential side of the first power supply circuit 3 is connected to the high potential side first DC bus 21p, and the low potential side of the first power supply circuit 3 is connected to the low potential side first DC bus 21n. Is done. One end of the switch 2s is connected to the high potential side first DC bus 21p, and the other end of the switch 2s is connected to one end of the high potential side second DC bus 22p of the second DC bus 22. Also, the low potential side second DC bus 22n of the second DC bus 22 is connected to the low potential side first DC bus 21n. Further, the high potential side of the first power supply circuit 3 is connected to the high potential side second DC bus 22p, and the low potential side of the first power supply circuit 3 is connected to the low potential side second DC bus 22n. Is done. The high potential side of the resonance suppression circuit 5 is directly connected to the high potential side first DC bus 21p, and the low potential side of the resonance suppression circuit 5 is directly connected to the low potential side first DC bus 21n. .
  • the impedance of the current path changes with the change of the current path.
  • the change in the impedance of the current path is an incentive, and the resonance circuit may generate a resonance state in a specific frequency range, and the AC voltage in the specific frequency range may be superimposed on the first DC bus 21.
  • the second power supply circuit 4 has an effect of rapidly attenuating an AC voltage in a specific frequency range, and as described above, the resonance is suppressed in the second power supply circuit 4 in which the internal impedance during conduction is set higher than that of the first power supply circuit 3. Since the circuit 5 is connected in parallel, the superimposed AC voltage can be rapidly attenuated.
  • the resonance suppression circuit 5 is always connected in parallel to the inverter circuit 1 via the DC bus 2 in any of the switch state 1 to the switch state 3, so that the above-described resonance voltage can be suppressed from being superimposed.
  • the superimposition of noise due to disturbance to the inverter circuit 1 can also be suppressed. Further, even when the inverter circuit 1 causes the generation of noise, the superposition of noise can be suppressed.
  • the resonance suppression circuit 5 may change. That is, even when the switch 2s and the switch 4s are not switched on and off, the impedance of the current path changes, and the resonance circuit is connected between the high potential side DC terminal 1p and the low potential side DC terminal 1n of the inverter circuit 1. AC voltage may be superimposed. Even in such a case, since the resonance suppression circuit 5 is always connected in parallel to the inverter circuit 1 via the first DC bus 21, it is possible to suppress the superposition of the AC voltage on the DC bus 21.
  • the resonance suppression circuit 5 by installing the resonance suppression circuit 5 as described above, even when a sufficient installation space cannot be secured, it is possible to prevent the AC voltage from being superimposed on the DC bus due to the resonance state, and Thus, it is possible to provide the power conversion system 103 that does not cause the inverter circuit connection device such as the control of the above to be disabled.
  • FIG. 4 is an electrical connection diagram showing an example of the power conversion system 103 different from FIG. 3 according to the third embodiment.
  • the same reference numerals or the same reference numerals as those in FIG. 3 are the same as or equivalent to the components shown in the third embodiment described above, and thus detailed description thereof is omitted.
  • the high potential side of the resonance suppression circuit 5 is directly connected to the high potential side DC terminal 1p of the inverter circuit 1, and the low potential side of the resonance suppression circuit 5 is connected to the low potential side DC terminal 1n of the inverter circuit 1. Connected directly.
  • the embodiment including the two DC power supply circuits of the first power supply circuit 3 and the second power supply circuit 4 has been described. It is not limited to the number, and three or more DC power supply circuits may be provided.
  • the resonance suppression circuit 5 includes a configuration in which a resistor and a diode are connected in parallel, a configuration in which a capacitor is connected in series, and a configuration in which a capacitor and an inductor are connected in series.
  • cutoff frequency fc is set lower than resonance frequency f1 and resonance frequency f2.
  • the present invention is not limited to the set value of cutoff frequency fc. Absent. Even when the cut-off frequency fc is set higher than the resonance frequency f1 and the resonance frequency f2, it is possible to suppress the superimposition of the AC voltage on the DC bus due to the resonance state, and also suppress the noise superposition due to the disturbance to the inverter circuit 1. can do. Further, even when the inverter circuit 1 causes the generation of noise, the superposition of noise can be suppressed.
  • the resonance suppression circuit 5 may be connected in parallel to each of the first power supply circuit 3 and the second power supply circuit 4 without using a DC bus.
  • the cutoff frequency fc of the resonance suppression circuit 5 connected in parallel to the first power supply circuit 3 is set to be lower than the resonance frequency f1
  • the resonance suppression connected in parallel to the second power supply circuit 4 is set.
  • the cutoff frequency fc of the circuit 5 may be set to be lower than the resonance frequency f2.
  • the present invention does not limit the number of resonance suppression circuits 5.
  • the high potential side of the other resonance suppression circuit 5 is directly connected to the high potential side second DC bus 22p, and the low resonance side of the other resonance suppression circuit 5 is low.
  • the potential side is directly connected to the low potential side second DC bus 22n.
  • the cutoff frequency fc of the resonance suppression circuit 5 connected to the first DC bus 21 is set to be lower than the resonance frequency f1
  • the cutoff of the resonance suppression circuit 5 connected to the second DC bus 22 is set.
  • the frequency fc may be set to be lower than the resonance frequency f2.
  • the detailed structures of the first power supply circuit 3 and the second power supply circuit 4 have been described.
  • the present invention is not limited to these detailed structures.
  • a lead storage battery, a lithium ion battery, a nickel hydride battery, an electric double layer capacitor, or the like may be used as the battery, and a semiconductor switch such as an IGBT or MOSFET, a mechanical switch, or the like may be used as the switch.
  • the semiconductor switch constituting the inverter circuit 1 may use Si or a wide band gap semiconductor of SiC, GaN, or diamond.
  • the switch 2s, the switch 3s, and the switch 4s are not switched on and off, the superimposition of the AC voltage on the DC bus 2 can be suppressed. Therefore, even in a power conversion system that does not have a switch, the resonance state Therefore, it is possible to provide a power conversion system with high reliability that prevents the AC voltage from being superimposed on the DC bus by the above and prevents the connected device of the inverter circuit such as motor control from being disabled.
  • the present invention can suppress the superposition of the AC voltage to the DC bus 2 by connecting the resonance suppression circuit 5, the invention is not limited to the case where a sufficient installation space cannot be secured, and there is a cost reduction or manufacturing. It is also effective in reducing time.
  • the embodiments can be freely combined, or the embodiments can be appropriately changed or omitted.
  • 1 inverter circuit 2 DC bus, 2s switch, 2p high potential side DC bus, 2n low potential side DC bus, 3 first power circuit, 3s switch, 4 second power circuit, 4 second power circuit, 4s Switch, 5 resonance suppression circuit, 5c capacitor, 5r resistor, 5 resonance suppression circuit, 21 first DC bus, 21p high potential side first DC bus, 21n low potential side first DC bus, 22 second DC bus, 22p high potential side second DC bus, 22n low potential side second DC bus, 100-103 power conversion system.

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  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

L'invention porte sur un système de conversion de courant qui est équipé : d'un circuit de conversion de courant pour convertir un courant continu en un courant alternatif ; de bus de courant continu qui sont disposés d'un côté potentiel haut et d'un côté potentiel bas et sont connectés au circuit de conversion de courant ; d'un premier circuit d'alimentation électrique en courant continu qui est connecté entre les bus de courant continu côté potentiel haut et côté potentiel bas ; et d'un second circuit d'alimentation électrique en courant continu qui est connecté entre les bus de courant continu côté potentiel haut et côté potentiel bas. Le système est en outre équipé d'un circuit de suppression de résonance qui est connecté en parallèle avec le premier circuit d'alimentation en courant continu et le second circuit d'alimentation électrique en courant continu. De plus, le circuit de suppression de résonance possède une fréquence de coupure plus basse que la fréquence de résonance d'un chemin de courant qui s'étend à partir du côté potentiel haut du premier circuit d'alimentation électrique en courant continu et retourne au côté potentiel bas du premier circuit d'alimentation électrique en courant continu par l'intermédiaire du circuit de conversion de courant, et que la fréquence de résonance d'un chemin de courant qui s'étend à partir du côté potentiel haut du second circuit d'alimentation électrique en courant continu et retourne au côté potentiel bas du second circuit d'alimentation électrique en courant continu par l'intermédiaire du circuit de conversion de courant.
PCT/JP2016/081042 2015-12-29 2016-10-20 Système de conversion de courant Ceased WO2017115539A1 (fr)

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JP2015257648 2015-12-29

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Cited By (2)

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WO2019016962A1 (fr) * 2017-07-21 2019-01-24 三菱電機株式会社 Dispositif d'alimentation électrique de bâtiment de gare
WO2019230430A1 (fr) * 2018-05-28 2019-12-05 三菱電機株式会社 Dispositif de conversion de puissance

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JP2004173464A (ja) * 2002-11-22 2004-06-17 Toyota Motor Corp インバータ検査装置、制御装置及びインバータ検査方法
JP2012244651A (ja) * 2011-05-16 2012-12-10 Denso Corp 車載用電気システム
JP2015159653A (ja) * 2014-02-24 2015-09-03 株式会社デンソー 電力変換システム

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Publication number Priority date Publication date Assignee Title
JP2003070263A (ja) * 2001-08-23 2003-03-07 Hitachi Ltd ３レベルインバータ装置
JP2004173464A (ja) * 2002-11-22 2004-06-17 Toyota Motor Corp インバータ検査装置、制御装置及びインバータ検査方法
JP2012244651A (ja) * 2011-05-16 2012-12-10 Denso Corp 車載用電気システム
JP2015159653A (ja) * 2014-02-24 2015-09-03 株式会社デンソー 電力変換システム

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019016962A1 (fr) * 2017-07-21 2019-01-24 三菱電機株式会社 Dispositif d'alimentation électrique de bâtiment de gare
JPWO2019016962A1 (ja) * 2017-07-21 2020-05-21 三菱電機株式会社 駅舎電源装置
US11296513B2 (en) 2017-07-21 2022-04-05 Mitsubishi Electric Corporation Station building power supply
WO2019230430A1 (fr) * 2018-05-28 2019-12-05 三菱電機株式会社 Dispositif de conversion de puissance
JPWO2019230430A1 (ja) * 2018-05-28 2020-06-18 三菱電機株式会社 電力変換装置
US11323025B2 (en) 2018-05-28 2022-05-03 Mitsubishi Electric Corporation Power converter

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