WO2024256310A1 - Procede de detection de la presence ou de l'absence d'une ligne conductrice de neutre dans une source de tension electrique alternative multiphasee - Google Patents
Procede de detection de la presence ou de l'absence d'une ligne conductrice de neutre dans une source de tension electrique alternative multiphasee Download PDFInfo
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- WO2024256310A1 WO2024256310A1 PCT/EP2024/065869 EP2024065869W WO2024256310A1 WO 2024256310 A1 WO2024256310 A1 WO 2024256310A1 EP 2024065869 W EP2024065869 W EP 2024065869W WO 2024256310 A1 WO2024256310 A1 WO 2024256310A1
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- voltage
- synchronous rectifier
- bidirectional synchronous
- voltage source
- multiphase
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Classifications
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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
- H02M7/66—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal
- H02M7/68—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters
- H02M7/72—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/79—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal 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
- H02M7/797—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal 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
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
-
- 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
- B60L53/10—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 the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from AC or DC
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4233—Arrangements for improving power factor of AC input using a bridge converter comprising active switches
-
- 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
- B60L2210/30—AC to DC converters
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- 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
- Y02T90/12—Electric charging stations
Definitions
- the invention relates to a method, implemented by a system for controlling a bidirectional synchronous rectifier connected to a multiphase alternating electrical voltage source, for detecting the presence or absence of a neutral conductive line in the multiphase alternating electrical voltage source.
- the multiphase alternating electrical voltage source is a three-phase sinusoidal electrical current power supply network.
- the invention further relates to an assembly comprising a bidirectional synchronous rectifier and a system for controlling the bidirectional synchronous rectifier configured to implement the steps of such a method.
- the invention also relates to an electric charger for an electric or hybrid vehicle, comprising such an assembly, as well as to an electric or hybrid vehicle, in particular an automobile, comprising such an electric charger.
- an electric charger for electric or hybrid vehicles, embedded in such a vehicle and intended to be connected to a terminal or to an electric charging station, itself connected to a sinusoidal electric voltage source (such as a three-phase electrical power supply network) for the electrical power supply of the vehicle.
- Such an electric charger conventionally comprises a bidirectional synchronous rectifier capable of converting a first alternating electrical voltage into a second direct electrical voltage, a system for controlling the bidirectional synchronous rectifier, as well as a converter 30 configured to convert at high frequency the second direct electrical voltage into a third direct electrical voltage.
- the bidirectional synchronous rectifier comprises an active power factor correction stage and a direct voltage bus connected to the output of the active power factor correction stage.
- the active correction stage of power factor allows a transfer of power between the sinusoidal electrical voltage source and the DC voltage bus.
- the synchronous rectifier is called "bidirectional" because it allows the electric current to flow in both directions by controlling reversible controllable electronic switches (as opposed to diodes for example) acting in the switching branches of the rectifier, the direction of current flow being a function of the power balance produced by the voltage regulation loop controller acting to maintain the DC voltage bus at its nominal voltage: 10 - if current from the DC to DC converter arrives at the DC voltage bus, the voltage increases and the controller acts to cause the current to flow in phase opposition to the input voltage in order to discharge the DC voltage bus; - conversely, if the DC to DC converter draws 15 current, the voltage loop controller draws current from the power supply network and the current is in phase with the input voltage.
- the high-frequency DC to DC converter (typically a chopper) is connected to the output of the rectifier.
- the electric charger it is preferable for the electric charger to be compatible with any multiphase AC electric power supply system or network (connected to the electric charging station or terminal), whether or not it has a neutral conductor line.
- the presence or absence of a neutral conductor line in the electric power supply system or network has a very significant impact on the control strategy of the active correction stage of the bidirectional synchronous rectifier, implemented by the control system. Indeed, depending on whether or not a neutral conductor line is present in the electric power supply system or network, the control strategies of the active correction stage of the rectifier are completely different in their implementation.
- a phase-by-phase control strategy of the “a, b, c” type is typically used.
- a vector control of the type "dq0" is advantageously used.
- the rectifier control strategy implemented by the control system must include special functions, which become useless when the neutral conductor line is present 5 (thereby unnecessarily increasing the computational load when no means of detecting the presence or absence of the neutral conductor line is provided).
- a degraded solution that is used today consists in starting from the principle that the neutral conductor line is always absent in the multiphase AC electrical voltage source 5.
- the electrical charger always operates as a "neutralless" electrical charger.
- this solution has the main drawback that such an electrical charger cannot manage the maximum power that it is possible to draw from the phases of the voltage source, phase by phase.
- such a functionality can be particularly useful for example in a context where it is necessary to complete the phases independently of each other (if necessary by unbalancing them), allowing faster charging, or to rebalance the power supply network (from one phase to another), or to allow distribution of the power seen, balancing and homogenization within the active power factor correction stage of the rectifier in order to slow down the aging of the components.
- the aim of the invention is to overcome the drawbacks of the prior art by proposing a method, implemented by a control system of a bidirectional synchronous rectifier connected to a multiphase AC electrical voltage source, for detecting the presence or absence of a neutral conductive line in the multiphase AC electrical voltage source, which allows precise detection by the control system of the presence or absence of a neutral conductive line, while being robust to variations in amplitude and frequency of the electrical voltage supplied by the voltage source.
- the invention thus relates, in its broadest sense, to a method, implemented by a system for controlling a bidirectional synchronous rectifier connected to a multiphase AC electrical voltage source, for detecting the presence or absence of a neutral conductor line in the multiphase AC electrical voltage source, the bidirectional synchronous rectifier comprising a neutral input terminal capable of being connected to a neutral conductor line of the multiphase AC electrical voltage source, an active power factor correction stage and a DC voltage bus connected in output of the power factor correction stage, the active power factor correction stage being provided with several electronic switching branches, at least one half-branch of each of the electronic switching branches comprising at least one switching member, the number of electronic switching branches being equal to the number of phases in the multiphase alternating electric voltage source, the direct voltage bus comprising two half-branches connected in series at an intermediate terminal, said intermediate terminal being connected to the neutral input terminal, the control system comprising means for measuring at least one quantity relating to a current capable of flowing in the direct voltage bus, the method comprising the following steps:
- the control system of the bidirectional synchronous rectifier is capable of autonomously and precisely determining whether a neutral conductive line is present in the multiphase AC electrical voltage source, and this without any communication with a possible electrical charging station or terminal connected to the voltage source.
- the detection method according to the invention is also robust to variations in the amplitude and frequency of the electrical voltage supplied by the voltage source; and the detection can advantageously be carried out by comparing the measured quantity both to a relative and absolute threshold.
- the method can also be used for a possible plausibility check as to the presence of a neutral conductor line, which would possibly be provided by an electric charging station or terminal connected to the voltage source.
- said at least one first measured quantity is the amplitude and/or the frequency of the voltage in the DC voltage bus at the end of the pre-charging phase of the bidirectional synchronous rectifier
- said at least one second measured quantity is the effective amplitude U eff1 and/or the frequency f 1 of the voltage supplied by the multiphase AC electrical voltage source at the end of the pre-charging phase of the bidirectional synchronous rectifier, said at least one second measured quantity being supplied by a third-party measuring system.
- This first embodiment of the invention is advantageous when a measurement of the effective amplitude and/or the frequency of the voltage supplied by the multiphase AC electrical voltage source is available for the rectifier control system.
- the voltage threshold value is between a first value equal to ⁇ 3. ⁇ 2. ⁇ ⁇ and a second value equal to 2. ⁇ 2. ⁇ ⁇ , and is preferably equal to 0.5. (2 + ⁇ 3) ⁇ 2.
- the frequency threshold value is between a first value equal to 3.
- ⁇ ⁇ and is preferably equal to 4.5. ⁇ ⁇ .
- said at least one first measured quantity is the voltage in the voltage bus at the end of the pre-charging phase of the bidirectional synchronous rectifier
- the presence of a neutral conductive line in the multiphase AC electrical voltage source is detected if, during the comparison step, the measured value of the voltage in the DC voltage bus at the end of the pre-charging phase is greater than said voltage threshold value
- said at least one first measured quantity is the frequency of the voltage in the DC voltage bus at the end of the pre-charging phase of the bidirectional synchronous rectifier
- the presence of a neutral conductive line in the multiphase AC electrical voltage source is detected if, during the comparison step, the measured value of the frequency of the voltage in the DC voltage bus at the end of the pre-charging phase is less than said frequency threshold value.
- the bidirectional synchronous rectifier 15 further comprises a controllable electronic switch connected between the neutral input terminal and the intermediate terminal, and capable of being controlled by the control system, and the step of measuring at least a first quantity relating to a current flowing in the DC voltage bus at the end of the pre-charging phase of the bidirectional synchronous rectifier 20 comprises a first sub-step during which the electronic switch is controlled to be in the open state, and said at least one first measured quantity is the voltage in the DC voltage bus during this first sub-step, and a second sub-step during which the electronic switch is controlled to be in the closed state, said at least one second measured quantity at the end of the pre-charging phase of the bidirectional synchronous rectifier being the voltage in the DC voltage bus during this second sub-step.
- This second embodiment of the invention is advantageous when no measurement of the effective amplitude and frequency of the voltage 30 provided by the multiphase AC electrical voltage source is available for the rectifier control system.
- the detection of the presence or absence of a neutral conductive line in the AC electrical voltage source multiphase is independent of the effective amplitude and frequency of the voltage supplied by the voltage source.
- the presence of a neutral conductor line in the multiphase AC electrical voltage source 5 is detected if, during the comparison step, the measured value of the voltage in the DC voltage bus during the first substep is distinct from the measured value of the voltage in the DC voltage bus during the second substep.
- the invention also relates to an assembly comprising a bidirectional synchronous rectifier and a system for controlling the bidirectional synchronous rectifier, the bidirectional synchronous rectifier being capable of being connected to a multiphase alternating electrical voltage source and comprising a neutral input terminal capable of being connected to a neutral conductor line of the multiphase alternating electrical voltage source, an active power factor correction stage and a direct voltage bus connected to the output of the active power factor correction stage, the active power factor correction stage being provided with several electronic switching branches, at least one half-branch of each of the electronic switching branches comprising at least one switching member, the number of electronic switching branches being equal to the number of phases in the multiphase alternating electrical voltage source, the direct voltage bus comprising two half-branches connected in series at an intermediate terminal, said intermediate terminal being connected to the neutral input terminal, the control system comprising means of measurement of at least one quantity relating to a current capable of flowing in the DC voltage bus, the bidirectional synchronous rectifier control system being configured to implement the steps of a method for detecting the presence or absence
- the invention also relates to an electric charger for an electric or hybrid vehicle intended to be connected to a terminal or to an electric charging station connected to an electrical voltage source multiphase alternative, for electric of said electric or hybrid vehicle, the electric charger comprising an assembly as described above.
- the invention also relates to an electric or hybrid vehicle, in particular an automobile, comprising an electric charger as described above.
- Embodiments of the present invention will be described below, as non-limiting examples, with reference to the appended figures in which: 10 - [Fig. 1] is a schematic representation of an assembly comprising a bidirectional synchronous rectifier and a rectifier control system, the control system being configured to implement the steps of a detection method according to the present invention; - [Fig.
- FIG. 2 is a flowchart representing a detection method according to a first embodiment of the present invention, implemented by the control system of FIG. 1; - [Fig. 3] is a flowchart representing a detection method according to a second embodiment of the present invention, implemented by a system for controlling an assembly according to the invention.
- 20 [020] With reference to FIG. 1, an assembly 2 is illustrated comprising a bidirectional synchronous rectifier 4 and a system 6 for controlling the bidirectional synchronous rectifier 4.
- the assembly 2 is connected on the one hand to a multiphase AC electrical voltage source 7 (such as for example a three-phase electrical power supply network with neutral N1 in the particular embodiment example 25 of FIG.
- a multiphase AC electrical voltage source 7 such as for example a three-phase electrical power supply network with neutral N1 in the particular embodiment example 25 of FIG.
- the three-phase electrical power supply network 7 comprises, in addition to the neutral conductor line N1, three 30 phase conductor lines P1, P2, P3. However, it happens that the three-phase electrical power supply network 7 does not comprise a neutral conductor line, but only phase conductor lines P1, P2, P3 (this configuration not being shown in the figures).
- the assembly 2 is within an electric or hybrid motor vehicle, more precisely within an electric charger intended to be connected to a terminal or to an electric charging station, itself connected to the source of alternating electric voltage 7, for the power supply of the vehicle (neither the vehicle, nor the terminal or the charging station, nor the charger as a whole being shown in the figures for reasons of clarity).
- the direct electric voltage U2 makes it possible to power an electric storage battery of the vehicle, after transformation by one or more other stage(s) of the electric charger (such as for example a step-down and step-up chopper).
- the assembly 2 thus supplies the direct electric voltage U2 on an output bus 5 to which the load 8 is connected, the value of this direct electric voltage U2 being for example of the order of 400 Vdc or 800 Vdc.
- the bidirectional synchronous rectifier 4 also comprises a neutral input terminal 9 and an active power factor correction stage 10, the output bus 5 being connected to the output of the active power factor correction stage 10 via at least one resistor (in this case via two resistors R1, R2 in the exemplary embodiment of FIG. 1).
- the resistor in this case via two resistors R1, R2 in the exemplary embodiment of FIG.
- the bidirectional synchronous rectifier 4 also comprises an electromagnetic interference filtering stage 12, the active power factor correction stage 10 being connected to the output of the electromagnetic interference filtering stage 12 via three inductors L1, L2, L3 and three resistors R3, R4, R5.
- the neutral input terminal 9 is then an input terminal of the electromagnetic interference filtering stage 12.
- Each pair of an inductance L1, L2, respectively L3, and a resistor R3, R4, respectively R5, corresponds to a separate phase conductive line P1, P2, P3, the inductance L1, L2, L3 and the resistor R3, R4, R5 30 of each pair being connected in series.
- the bidirectional synchronous rectifier 4 also comprises a controllable electronic switch 14.
- the synchronous rectifier bidirectional 4 may not have a controllable electronic switch 14.
- two third-party measurement systems 11A, 11B make it possible to measure respectively the effective amplitude Ueff1 and the frequency f1 of the voltage supplied by the AC electrical voltage source 7.
- the system 11B for measuring the frequency f1 of the current supplied by the AC electrical voltage source 7 is for example connected between the active power factor correction stage 10 and the electromagnetic disturbance filtering stage 12.
- the system 11B for measuring the frequency f1 of the current is for example a phase-locked loop measurement system.
- the two third-party measurement systems 11A, 11B are connected to the control system 6, making it possible to provide their measurements to this system 6.
- the neutral input terminal 9 is capable of being connected to the neutral conductive line N1 of the AC electrical voltage source 7, when the connection between the electric charger of the vehicle and the electric charging station or terminal is made. When the AC electrical voltage source 7 does not have a neutral conductive line (which the assembly 2 embedded in the electric charger does not “know”, the neutral input terminal 9 is not physically connected to any element).
- the electromagnetic interference filtering stage 12 is capable of being connected to the AC electrical voltage source 7, when the connection between the electric charger of the vehicle and the electric charging station or terminal is made.
- the electromagnetic interference filtering stage 12 comprises as many input terminals as there are phase conductive lines P1, P2, P3 in the three-phase electrical power supply network 7.
- the electromagnetic interference filtering stage 12 comprises as many output terminals as there are phase conductive lines 30 P1, P2, P3 in the three-phase electrical power supply network 7.
- the active power factor correction stage 10 comprises several electronic switching branches 16, 18, 20, in this case three electronic switching branches 16, 18, 20 in the particular embodiment of FIG. 1. Each electronic switching branch switching 16, 18, 20 separate phase conductive line P1, P2, P3 of the three-phase electrical power supply network 7.
- Each electronic switching branch 16, 18, 20 comprises two switching half-branches 16A, 16B; 18A, 18B; 20A, 20B connected in series 5 at an intermediate terminal 22, 24, 26. Each intermediate terminal 22, 24, 26 is connected to one end of one of the inductances L1, L2, L3.
- Each switching half-branch 16A, 16B, 18A, 18B, 20A, 20B comprises a switching member 28.
- each half-branch 16A, 16B, 18A, 18B, 20A, 20B comprises a number N2 of switching members 10 28, N2 being an integer greater than or equal to two.
- the switching of the switching members 28 is controlled by a control unit 29 of the control system 6.
- the control unit 29 is also capable of controlling the switching of the controllable electronic switch 14, as will be described later.
- each switching member 28 is bidirectional in current and unidirectional in voltage.
- Each switching member 28 comprises a controllable electronic switch 30 and a diode 32 connected in antiparallel, thus ensuring bidirectional current flow paths.
- Each switch 30 is, for example, formed of an insulated gate bipolar transistor, also called an IGBT transistor (from the English “Insulated Gate Bipolar Transistor”). All the IGBT transistors 30 are, for example, identical.
- the gate of each IGBT transistor 30 is connected to the control system 6 to receive a corresponding control signal.
- the IGBT transistor 30 is replaced 25 by any semiconductor electronic component comprising a control electrode and two conduction electrodes, such as a bipolar transistor, a field effect transistor, a thyristor, a gate-turn-off thyristor, an IGCT thyristor (from the English "Insulated Gate Commutated Thysistor”), or a MCT thyristor (from the English "MOS Controlled 30 Thyristor”) for example.
- the output bus 5 comprises two half-branches 5A, 5B connected in series at an intermediate terminal 34.
- each half-branch 5A, respectively 5B comprises a capacitor C1, respectively C2 and a resistor R6, respectively R7.
- the control system 6 comprises means 26 for measuring at least one quantity relating to a current specific to flow in the DC voltage bus 5.
- the measuring means 26 are configured to measure the amplitude and/or the frequency of the voltage in the DC voltage bus 5 at the end of a pre-charging phase of the synchronous rectifier.
- bidirectional 4 (such a 15 phase being a natural or passive pre-charging phase, during which no switching member 28 is controlled by the control system 6).
- the measuring means 26 are configured to measure both the amplitude and the frequency of the voltage in the DC voltage bus 5 at the end of the pre-charging phase of the bidirectional synchronous rectifier 4.
- the measuring means 26 are configured to measure the voltage in the DC voltage bus 5 at the end of the pre-charging phase of the bidirectional synchronous rectifier 4.
- the bidirectional synchronous rectifier 4 is initially in a pre-charge phase, during which no switching member 28 is driven by the drive system 6 (the rectifier 4 then operates as a bridge and the electrical voltage delivered on the DC voltage bus 5 is gradually and naturally brought to an intermediate voltage value).
- the bidirectional synchronous rectifier 4 then enters a “classic” charging phase 5 during which the control system 6 controls the switching of the switching members 28 in the branches 16, 18, 20 (and the electrical voltage delivered on the DC voltage bus 5 is gradually brought from its intermediate value at the end of the pre-charging phase to its nominal value), such a charging phase not being detailed 10 subsequently.
- the method in the first embodiment of the invention comprises an initial step 40 of measuring, by the control system 6, the amplitude and/or the frequency of the voltage in the DC voltage bus 15 5 at the end of the pre-charging phase of the bidirectional synchronous rectifier 4.
- the method comprises a following step 42 during which the control system 6 of the bidirectional synchronous rectifier 4 receives the measurement of the effective amplitude U eff1 and/or the frequency f 1 of the voltage supplied by the AC electrical voltage source 7 at the end of the pre-charging phase of the rectifier 4, these two measurements being supplied by the third-party measurement systems 11A, 11B.
- the method then comprises a following step 44 during which the system 6 for controlling the bidirectional synchronous rectifier 4 compares the measured value of the amplitude and/or frequency of the voltage in the DC voltage bus 5 at the end of the pre-charging phase of the bidirectional synchronous rectifier 4 to a threshold value.
- the voltage threshold value is typically between a first value equal to ⁇ 3. ⁇ 2. ⁇ ⁇ and a second value equal to 2. ⁇ 2. ⁇ ⁇ , and is preferably equal to 0.5. (2 + ⁇ 3) ⁇ 2. ⁇ ⁇ .
- the frequency threshold value is typically between a first value equal to 3. ⁇ ⁇ and a second value equal to 6.
- step 44 if the measured value of the voltage in the DC voltage bus 5 at the end of the pre-charging phase of the bidirectional synchronous rectifier 4 is greater than the voltage threshold value and/or if the measured value of the frequency of the voltage in the DC voltage bus 5 at the end of the pre-charging phase of the bidirectional synchronous rectifier 4 is less than the frequency threshold value, then the presence of a neutral conductive line N1 in the AC electrical voltage source 7 is detected by the control system 6 during a final step 46 (as is the case in the configuration illustrated in FIG. 1).
- the control system 6 detects an absence of a neutral conductive line in the AC electrical voltage source 7, during a final step 58.
- a neutral conductive line N1 is present in the AC electrical voltage source 7 (as is the case in the configuration illustrated in FIG. 1)
- the voltage in the DC voltage bus 5 at the end of the pre-charging phase of the bidirectional synchronous rectifier 4 is substantially equal to 2.
- ⁇ 2. ⁇ ⁇ and the frequency of the voltage in the DC voltage bus 5 at the end of the pre-charging phase of the bidirectional synchronous rectifier 4 is substantially equal to 3.
- the method in the second embodiment of the invention comprises an initial step 50 of measuring, by the control system 6, the voltage in the DC voltage bus 5 at the end of the pre-charging phase of the bidirectional synchronous rectifier 4. More [039] The method then comprises a next step 52 during which the system 6 for controlling the bidirectional synchronous rectifier 4 compares the first voltage value (measured during the first substep 50A) with the first voltage value (measured during the first substep 50A). the second voltage value (measured during the second substep 15 50B). [040] At the end of the comparison step 52, if the first measured voltage value is distinct from the second measured voltage value, then the presence of a neutral conductive line N1 in the AC electrical voltage source 7 is detected by the control system 6 during a final step 56.
- control system 6 detects an absence of a neutral conductive line in the AC electrical voltage source 7, during a final step 58.
- a neutral conductive line N1 is present in the AC electrical voltage source 7, the value of the voltage in the DC voltage bus 5 at the end of the pre-charging phase of the bidirectional synchronous rectifier 4 undergoes a sudden “jump” when the electronic switch 14 closes, due to the electrical voltage present on the neutral line N1.
- the system 6 for controlling the bidirectional synchronous rectifier 4 is capable of determining autonomously and precisely whether a neutral conductor line N1 is present in the multiphase alternating electric voltage source 7, and this without any communication with a possible electrical charging station or terminal connected to the voltage source 7.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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- Mechanical Engineering (AREA)
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- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Rectifiers (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020267000784A KR20260021752A (ko) | 2023-06-13 | 2024-06-10 | 다상 ac 전압원에서 중성 전도선의 존재 여부를 검출하는 방법 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2305948A FR3150056B1 (fr) | 2023-06-13 | 2023-06-13 | Procede de detection de la presence ou de l’absence d’une ligne conductrice de neutre dans une source de tension electrique alternative multiphasee |
| FRFR2305948 | 2023-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024256310A1 true WO2024256310A1 (fr) | 2024-12-19 |
Family
ID=88413206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/065869 Ceased WO2024256310A1 (fr) | 2023-06-13 | 2024-06-10 | Procede de detection de la presence ou de l'absence d'une ligne conductrice de neutre dans une source de tension electrique alternative multiphasee |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20260021752A (fr) |
| FR (1) | FR3150056B1 (fr) |
| WO (1) | WO2024256310A1 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5485413B2 (ja) * | 2010-12-14 | 2014-05-07 | 本田技研工業株式会社 | 車両 |
| US20170117749A1 (en) * | 2014-06-27 | 2017-04-27 | Huawei Technologies Co., Ltd. | Three-Phase Uninterruptible Power Supply Control Method and Apparatus, and Three-Phase Uninterruptible Power Supply |
| US20170131341A1 (en) * | 2013-10-08 | 2017-05-11 | Rockwell Automation Technologies, Inc. | System and method for ground fault detection |
| DE102019131410A1 (de) * | 2019-11-21 | 2021-05-27 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Vorrichtung zur effizienten netzartunabhängigen Zwischenkreisaufbereitung |
| CN114717604A (zh) * | 2022-03-17 | 2022-07-08 | 北京雷动智创科技有限公司 | 一种双极型电解水制氢装置及其控制方法 |
-
2023
- 2023-06-13 FR FR2305948A patent/FR3150056B1/fr active Active
-
2024
- 2024-06-10 KR KR1020267000784A patent/KR20260021752A/ko active Pending
- 2024-06-10 WO PCT/EP2024/065869 patent/WO2024256310A1/fr not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5485413B2 (ja) * | 2010-12-14 | 2014-05-07 | 本田技研工業株式会社 | 車両 |
| US20170131341A1 (en) * | 2013-10-08 | 2017-05-11 | Rockwell Automation Technologies, Inc. | System and method for ground fault detection |
| US20170117749A1 (en) * | 2014-06-27 | 2017-04-27 | Huawei Technologies Co., Ltd. | Three-Phase Uninterruptible Power Supply Control Method and Apparatus, and Three-Phase Uninterruptible Power Supply |
| DE102019131410A1 (de) * | 2019-11-21 | 2021-05-27 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Vorrichtung zur effizienten netzartunabhängigen Zwischenkreisaufbereitung |
| CN114717604A (zh) * | 2022-03-17 | 2022-07-08 | 北京雷动智创科技有限公司 | 一种双极型电解水制氢装置及其控制方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3150056B1 (fr) | 2025-08-29 |
| FR3150056A1 (fr) | 2024-12-20 |
| KR20260021752A (ko) | 2026-02-13 |
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