Method for controlling a rectifier, associated control device, charger and vehicle

Abstract

The invention relates to a method for controlling a rectifier (11) connected to each phase (9) of an AC source (8) to form a charging circuit, and configured to consume, for each phase, an electric current as a function of a setpoint signal delivered by a corrector (32), the method comprising a parameterization step (40) comprising, for each phase: calculation (42) of an inductance of the charging circuit from: a nominal model of the inductance; the electric current consumed by the rectifier (11); the setpoint signal; and a transfer function of the corrector (32); updating (44) of coefficients of the transfer function of the corrector (32) as a function of the determined inductance; and for each phase (9), the inductance comprising an inductance of a coil (24) of a respective boost converter (28) of the rectifier (11) and / or a line inductance of said phase (9). Figure for abstract: Figure 2.

Description

Title of the invention: Method for controlling a rectifier, associated control device, charger and vehicle Technical field

[0001] The present invention relates to a method of controlling a rectifier.

[0002] The invention also relates to a control device, a charger comprising such a control device and a vehicle comprising such a charger.

[0003] The invention applies to the field of electric vehicles, and more specifically to chargers equipping such vehicles. State of the art

[0004] It is known to equip an electric vehicle with a charger. Such a charger is intended to be connected to an AC network, such as a three-phase AC network, to recharge a high-voltage battery (typically 400 V) of the vehicle.

[0005] Conventionally, such a charger comprises a rectifier associated with a control device, the control device being configured to control the operation of the rectifier on the basis of a target current to be achieved.

[0006] In particular, the control device comprises a corrector (in English "current controller") configured to generate a voltage setpoint from the target current, a synthesizer of the control device then being configured to synthesize, from said voltage setpoint, a pulse width modulation signal to control the on or off state of switching members of the rectifier.

[0007] In general, in the context of a rectifier, the target current is a sinusoidal current.

[0008] However, such a control device is not entirely satisfactory.

[0009] Indeed, in order to guarantee an optimal voltage setpoint as a function of the target current, the parameters of the corrector are fixed in advance, for predetermined characteristics of the alternating network.

[0010] However, a large variability of characteristics, in particular of the value of the line inductance, is observed from one AC network to another. Indeed, the value of the line inductance depends on parameters over which the user of the vehicle has little influence, such as the distance to the network transformer, the quality of the electrical cables, etc.

[0011] As a result, the performance, in particular the stability, of the corrector during its operation (i.e. when it is connected to the AC network) is likely to be very adversely impacted when the charger is connected to a network having characteristics different from the predetermined characteristics. mentioned above, leading, in particular, to an undesirable difference between the current actually delivered by the charger and an expected current.

[0012] An aim of the present invention is to remedy at least one of the drawbacks of the state of the art.

[0013] Another aim of the invention is to propose a method for controlling a rectifier which is less impacted by the variability of the electrical characteristics between alternating current networks to which it is likely to be connected. Statement of the invention

[0014] To this end, the invention relates to a method of the aforementioned type, in which the rectifier is connected, at the input, in use, to each phase of an alternating source to form a charging circuit, and is configured to consume, for each phase, an electric current as a function of a setpoint signal delivered by a corrector, the control method comprising the implementation of a parameterization step comprising, for each phase of the source, the following sub-steps: • calculation of a corresponding inductance of the load circuit from: • a predetermined nominal model of the inductance; • the electric current consumed by the rectifier; • the setpoint signal delivered by the corrector and representative of a target current to be consumed by the rectifier; and • a corrector transfer function; • updating of coefficients of the corrector transfer function according to the determined inductance; and for each phase of the source, the inductance of the load circuit comprising at least one of an inductance of a coil of a respective boost converter of the rectifier and a line inductance of said phase of the source.

[0015] Indeed, in such a method, the inductance of each load circuit is determined, and the transfer function of the corrector is adjusted accordingly. In other words, the variability of the electrical characteristics between networks is taken into account thanks to such an operation.

[0016] This results in a favorable impact on the performance, in particular the stability, of the corrector during its operation to control the rectifier.

[0017] Advantageously, the control method according to the invention has one or more of the following characteristics, taken in isolation or in any technically possible combination:

[0018] for each phase of the source, the inductance of the load circuit is equal to a product of the nominal model by a constant, the calculation of the inductance of the load circuit comprising an estimation of the constant;

[0019] for each phase of the source, the constant is estimated from the relation: [Math. 1] K= T U(p-1) ® im(P) - Wp-1)

[0020] Or : K is the constant; Te is a sampling period; p is any instant of calculation; p - 1 is the calculation time preceding the calculation time p; Im(p) is a value of the electric current consumed by the rectifier at time p; and U'(p) is a value of a normalized setpoint signal delivered by the corrector at the calculation instant p, the normalized setpoint signal being equal to the result of dividing the setpoint signal by the nominal model;

[0021] for each phase, the updated transfer function is equal to the result of a product between, on the one hand, a nominal transfer function determined for a nominal model of the coil of the respective boost converter, and, on the other hand, the estimated constant;

[0022] for each phase of the source, the calculation of the inductance of the load circuit depends, in addition, on a predetermined internal resistance of the coil of the respective boost converter of the rectifier;

[0023] the method comprises, prior to the update: a first implementation of the calculation sub-step to determine, for each boost converter of the rectifier, the inductance of the corresponding coil, the source to which the rectifier is connected being a network simulator configured to simulate an alternating network having, for each phase, a zero line inductance; a second implementation of the calculation sub-step, subsequent to the first implementation of the calculation sub-step, in which the source to which the rectifier is connected is an AC network, and, for each phase of the AC network, the corresponding line inductance being equal to the inductance of the determined load circuit from which the inductance of the coil of the boost converter of the rectifier connected to said phase is subtracted;

[0024] for each phase, the corrector presents a transfer function of which each of the numerator and the denominator is a polynomial of degree 1.

[0025] According to another aspect of the invention, there is provided a control device for controlling a rectifier intended to be connected, at the input, in use, to each phase of an alternating source to form a load circuit, and being configured to consume, for each phase, an electric current according to a setpoint signal delivered by a corrector, the control device comprising a processing unit configured to implement a parameterization step comprising, for each phase of the source, the following sub-steps: • calculation of a corresponding inductance of the load circuit from: • a predetermined nominal model of the inductance; • the electric current consumed by the rectifier; • the setpoint signal delivered by the corrector and representative of a target current to be consumed by the rectifier; and • a corrector transfer function; • updating of coefficients of the corrector transfer function according to the determined inductance; and for each phase of the source, the inductance of the load circuit comprising at least one of an inductance of a coil of a respective boost converter of the rectifier and a line inductance of said phase of the source.

[0026] The device according to the invention can be any type of device such as a server, a computer, a tablet, a calculator, a processor, a computer chip, programmed to implement the method according to the invention, for example by executing the computer program according to the invention.

[0027] According to another aspect of the invention, there is provided a charger comprising a rectifier and a control device as defined above for controlling the operation of the rectifier.

[0028] According to another aspect of the invention, there is provided an electric vehicle comprising a charger as defined above, the charger being connected, at output, to a battery of the electric vehicle. Brief description of the figures

[0029] The invention will be better understood on reading the following description, given solely by way of non-limiting example and made with reference to the appended drawings in which:

[0030] [Fig-1]: [Fig.l] is a schematic representation of an electric vehicle according to the invention;

[0031] [Fig.2]: [Fig.2] is a schematic representation of a charger of the vehicle of [Fig.l], in use;

[0032] [Fig.3]: [Fig.3] is a schematic representation of a control device of the charger of [Fig.2]; and

[0033] [Fig.4]: [Fig.4] is a flowchart of a control method implemented by the control device of [Fig.3].

[0034] It is understood that the embodiments which will be described below are in no way limiting. In particular, it will be possible to imagine variants of the invention comprising only a selection of characteristics described below isolated from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention compared to the state of the prior art. This selection comprises at least one preferably functional characteristic without structural details, or with only a part of the structural details if it is this part which is only sufficient to confer a technical advantage or to differentiate the invention compared to the state of the prior art.

[0035] In particular, all the variants and all the embodiments described can be combined with each other if nothing prevents this combination from a technical point of view.

[0036] In the figures and in the remainder of the description, the elements common to several figures retain the same reference. Detailed description

[0037] An electric vehicle 2 according to the invention is illustrated by [Fig. 1].

[0038] The electric vehicle 2 comprises a battery 4 and a charger 6, the battery 4 being connected to the output of the charger 6.

[0039] The battery 4 is, in particular, intended to power an electric motor of the electric vehicle 2. Furthermore, the charger 6 is adapted to charge the battery 4 by transferring electrical energy to the battery 4 from an alternative source 8.

[0040] The electric vehicle 2 may or may not include a heat engine. In the case where the electric vehicle also includes a heat engine for its movement, the electric vehicle 2 is also called a “hybrid vehicle”.

[0041] The source 8 is, in particular, a three-phase network or a single-phase network. In this case, each phase 9 of the source 8 has, intrinsically, an inductance, called “line inductance”. In the figure, for each phase 9 of the source 8, the corresponding line inductance is symbolized by a coil 10.

[0042] According to another example, described later, the source 8 is a network simulator configured to simulate any type of network, in particular an alternating network having, for each of its phases, zero line inductance.

[0043] The charger 6 comprises a rectifier 11 and a control device 12 configured to control the operation of the rectifier 11.

[0044] An example of the architecture of the rectifier 11, called a “six-pulse bridge”, intended for to be connected to a three-phase network, is illustrated by [Fig.2].

[0045] Conventionally, such a rectifier 11 comprises three switching branches 14 connected in parallel between a first branch 16 and a second branch 18. Each switching branch 14 comprises two switching elements 20 connected in series between the first branch 16 and the second branch 18, and connected together at a midpoint 22.

[0046] Furthermore, for each switching branch 14, the rectifier 11 comprises a coil 24 connected between the respective midpoint 22 and a respective input terminal 26 of the rectifier 11.

[0047] The circuit formed by each switching branch 14 and by the coil 24 connected to said switching branch 14 forms a boost converter 28. In this case, for each boost converter 28, a current return takes place via one of the two other boost converters 28, connected between the first branch 16 and the second branch 18, or else by a neutral connection arranged between the first branch 16 and the second branch 18. As shown in the figure, the three boost converters 28 are intermixed.

[0048] Each of the first branch 16 and the second branch 18 is electrically connected to a respective terminal of the battery 4, for example via a DC-DC converter (not shown) ensuring the galvanic isolation of the charger 6.

[0049] Furthermore, as shown in the figure, in use, each input terminal 26 is connected to a respective phase 9 of the source 8. In other words, in use, each boost converter 28 is connected to the respective phase 9 of the source 8. In this way, the source 8 and the rectifier 11 form a charging circuit.

[0050] Furthermore, for each phase 9, the vehicle 2 comprises a respective electric current sensor 30, configured to deliver, to the control device 12, a measurement signal representative of the electric current Im flowing between said phase 9 and the rectifier 11 (i.e. between the phase 9 and the respective boost converter 28 of the rectifier 11). In other words, for each phase 9, the measurement signal delivered by the respective electric current sensor 30 is representative of the current drawn, from said phase 9, by the rectifier 11 (in particular by the boost converter 24 connected to said phase 9).

[0051] Obviously, the rectifier 11 is likely to have any other known architecture, such as a so-called “twelve-pulse bridge” architecture, a 3-level rectifier, for example having a so-called “Vienna rectifier” architecture, or any N-level rectifier (N positive integer). In this case, the components of the rectifier 11 are arranged to form a boost converter (each comprising a coil) for each phase 9 of the source 8 to which the charger 6 is intended to be connected.

[0052] As indicated previously, the control device 12, illustrated by [Fig. 3], is configured to control the operation of the rectifier 11. More precisely, the control device 12 is configured to control the operation of the rectifier 11 as a function of a target current Ic to be drawn by each boost converter 28 of the rectifier 11 from the network 8, in particular from the corresponding phase 9. Such a target current Ic, which is a consumed current, depends, for example, on the operational conditions.

[0053] As shown in this figure, the control device 12 comprises a corrector 32, a calculator 34 and a processing unit 36.

[0054] The corrector 32 is configured to generate, for each phase 9, a reference signal UL from the corresponding target current Ic. The computer 34 is configured to generate a signal for controlling the operation of the rectifier 11 as a function of the reference signal UL delivered by the corrector 32. Furthermore, the processing unit 36 is configured to parameterize the corrector 32.

[0055] Corrector 32

[0056] More precisely, for each phase 9, the corrector 32 is configured to generate a corresponding setpoint signal UL (homogeneous to a voltage across the associated coil 24 of the rectifier 11), as a function of the associated target current Ic, and as a function of the electric current Im measured by the respective electric current sensor 30. The setpoint signal UL is therefore representative of the target current Ic to be consumed by each boost converter of the rectifier 11. More precisely, considering that the setpoint signal UL is indicative of the voltage across the coil 24, then, in the frequency domain, UL = L.Ic, where L is the inductance of the coil. More precisely, the corrector 32 is configured to generate the setpoint signal UL from an error equal to a difference between the target electric current Ic and the measured electric current Im.

[0057] The corrector 32 is, in particular, characterized by its transfer function, said transfer function comprising a set of coefficients.

[0058] In particular, the corrector 32 is a linear corrector such that, for each phase 9, the corresponding transfer function is written as a ratio of two polynomials.

[0059] Advantageously, for each phase 9, the corrector 32 has a transfer function in which each of the numerator and the denominator is a polynomial of degree 1. Such a characteristic is advantageous, insofar as the stability of such a corrector is little, if at all, impacted by variations in the line inductance.

[0060] Calculator 34

[0061] The computer 34 is configured to generate a control signal for the operation of the rectifier 11. More precisely, the computer 34 is configured to generate the control signal from the reference signal UL delivered by the corrector 32.

[0062] The generation of the control signal by the computer 34 is conventionally known to those skilled in the art. For example, the computer 34 is configured to generate the control signal using a pulse width modulation technique. In this case, the control signal is defined over a plurality of successive switching intervals, and comprises, for each switching interval, a command of the off or on state of each switching element 20 during said switching interval. Conventionally, each switching interval has a negligible duration compared to the period of the source 8, for example 14.28 ps (microsecond), corresponding to a command according to a frequency of 70 kHz.

[0063] Processing unit 36

[0064] As indicated previously, the processing unit 36 is configured to configure the corrector 32. In particular, the processing unit 36 is configured to implement at least one configuration step 40, described with reference to FIGS. 3 and 4.

[0065] The parameterization step 40 comprises an inductance calculation sub-step 42 (or “calculation sub-step”) and an update sub-step 44.

[0066] Calculation sub-step 42

[0067] For each phase 9, the processing unit 36 is configured to calculate, during the calculation sub-step 42, an inductance of the charging circuit. For each phase 9, such an inductance comprises at least one of the line inductance of said phase 9 and the inductance of the coil 24 of the respective boost converter 28. For example, for each phase 9, the inductance of the corresponding charging circuit is equal to the sum of the line inductance of said phase 9 and the inductance of the coil 24 of the respective boost converter 28.

[0068] For each phase 9, the processing unit 36 is configured to calculate the inductance of the corresponding load circuit from: • a predetermined nominal model L of the inductance; • the electric current Im consumed by the rectifier 11; • the UL setpoint signal delivered by the corrector 32; and • the transfer function of corrector 32.

[0069] The use of the nominal model L is advantageous, in particular when the determined inductance is the inductance of the coils 24. Indeed, the coils 24 generally have a characteristic (i.e. a variation of the inductance as a function of the current) in accordance with the nominal model, to within a multiplicative constant K. The use of such a model allows the linearization of the relationships between the electric current Im and the reference signal UL, leading to an easy estimation of the inductance.

[0070] The nominal model is, in particular, obtained by approximation, by a function predetermined, of a nominal characteristic provided by the manufacturer of the coil 24. For example, the predetermined function is an affine function, so that the nominal model is written: L(I) = al + b, a and b being real numbers determined during the approximation.

[0071] Advantageously, to obtain the inductance of the load circuit, the processing unit 36 is configured to first calculate a normalized reference signal U', equal to the result of the division of the reference signal UL by the nominal model L. More precisely, at a given calculation instant p, the normalized reference signal U' is equal to the result of the division of the reference signal UL at said calculation instant by the value Lo of the nominal model L for a current equal to the target current Ic for said calculation instant: [Math. 2] U (p) UL(p) k L(I c (p))

[0072] Preferably, the processing unit 36 is, in addition, configured to estimate, for each phase 9 of the source, the constant K from the resolution of a linear equation linking the electric current Im, the normalized reference signal and the transfer function of the corrector 32.

[0073] In this case, the processing unit 36 is preferably configured to solve such a linear equation by implementing a linear parametric estimator, in particular on the basis of the following relationship, arising from the 0th order blocker applying to the output of the corrector 32: [Math. 3] Or : p is any given calculation instant; p - 1 is the calculation time preceding the calculation time p; and Te is a period between two successive calls of the current control loop.

[0074] According to another example, the processing unit 36 is configured to estimate, for each phase 9 of the source, a realization of the constant K from the relation: [Math. 4] o'(Pi) &Wp) -yp-i)

[0075] By way of example, the processing unit 36 is configured to estimate the value of the constant K for a plurality of distinct calculation instants, and to determine the constant K as being the average of the estimated values.

[0076] Advantageously, and as appears in [Fig. 3], for each phase of the source 8, the processing unit 36 is configured to calculate the inductance of the charging circuit as a function of a predetermined internal resistance R; of the coil 24 of the respective boost converter. Such a characteristic is advantageous, insofar as it leads to a more precise estimation of the constant K. In this case, the term U' is simply replaced by the term (U' - R;IC) in the relationships implemented for the estimation of the constant K.

[0077] Furthermore, for each phase 9, the processing unit 36 is configured to calculate the inductance of the corresponding load circuit as being equal to the product of the nominal model L by the estimated value of the constant K.

[0078] In this case, for each phase 9, the inductance K*L of the charging circuit calculated by the processing unit 36 is equal to the sum of the line inductance of said phase 9 and the inductance of the coil 24 of the respective boost converter 28.

[0079] Update sub-step 44

[0080] Furthermore, for each phase 9, the processing unit 36 is configured to update, during the update sub-step 44, the transfer function of the corrector 32 (in particular, to update the coefficients of the transfer function) as a function of the determined inductance.

[0081] For example, the processing unit 36 is configured to calculate the updated transfer function as being equal to the result of a product between, on the one hand, a nominal transfer function determined for the nominal model L of the coil 24, and, on the other hand, the determined constant K.

[0082] Such a method applies in particular to the case where the corrector 32 has a transfer function in which each of the numerator and the denominator is a polynomial of degree 1.

[0083] Alternatively, the processing unit 36 is configured to carry out a first implementation of the calculation sub-step 42, in a situation where the rectifier 11 is connected to a network simulator, forming the source 8 and configured to simulate an AC network having, for each phase, a zero line inductance. In this case, the processing unit 36 is able to determine, for each boost converter of the rectifier, the inductance of the corresponding coil 24.

[0084] Furthermore, in this variant, the processing unit 36 is configured to carry out a second implementation of the calculation sub-step 42, subsequent to the first implementation of the calculation sub-step 42, in a situation where the source 8 to which the rectifier 11 is connected is an AC network. In this case, for each phase 9 of the AC network, the processing unit 36 is configured to calculate the corresponding line inductance as being equal to the determined charging circuit inductance, from which the inductance of the coil 24 of the boost converter of the rectifier connected to said phase 9 is subtracted. Such an operation therefore leads to the calculation of the line inductance alone. Preferably, in this case, depending on the value of the line inductance, the processing unit 36 is configured to generate an alert representative of use of the charger outside a recommended operating condition.

[0085] Preferably, in this case, if it is assumed that the line inductance does not vary with the current, the inductance of the load circuit is preferably determined for a single value of the target current Ic, i.e. for a given value of the inductance of the coil 24.

[0086] Operation

[0087] The operation of the control device 12 will now be described with reference to the figures.

[0088] During a preliminary parameterization step, a predetermined nominal inductance model L is stored in the processing unit 36.

[0089] Then, during a connection step, the rectifier 11 is connected to each phase 9 of the source 8 to charge the battery 4. Such recharging is associated, for each phase 9, with a target current Ic, which depends, for example, on the operational conditions.

[0090] For each phase 9, the respective electric current sensor 30 delivers a measurement signal representative of the electric current Im flowing between said phase 9 and the rectifier 11.

[0091] Then, for each phase 9, the corrector 32 generates the respective setpoint signal UL, as a function of the corresponding target current Ic and measured electric current Im.

[0092] Furthermore, the computer 34 generates the control signal for the operation of the rectifier 11, from the reference signal UL delivered by the corrector 32.

[0093] Then, the processing unit 36 implements at least one parameterization step 40.

[0094] More precisely, during the calculation sub-step 42 of the parameterization step 40, the processing unit 36 calculates, for each phase 9, the inductance of the respective load circuit, from: • of the predetermined nominal model L of the inductance; • the electric current Im consumed by the rectifier 11; • the UL setpoint signal delivered by the corrector 32; and • of the transfer function of the corrector 32.

[0095] Then, during the update sub-step 44, for each phase 9, the processing unit 36 updates the transfer function of the corrector 32 as a function of the calculated inductance.

[0096] Preferably, if the source 8 to which the rectifier 11 is connected is a network simulator simulating an alternating network having, for each phase, a zero line inductance, then the processing unit 36 carries out a first implementation of the calculation sub-step 42, during which the processing unit 36 determines, for each boost converter of the rectifier 11, the inductance of the corresponding coil 24.

[0097] Then, when the connected rectifier 11 is an AC network, the processing unit 36 performs a second implementation of the calculation sub-step 42. More precisely, for each phase 9 of the AC network, the processing unit 36 calculates the corresponding line inductance, equal to the inductance of the determined load circuit, from which the inductance of the coil 24 of the boost converter of the rectifier connected to said phase 9 is subtracted.

[0098] Preferably, in this case, depending on the value of the line inductance, the processing unit 36 generates an alert representative of use of the charger outside of a recommended operating condition.

[0099] Of course, the invention is not limited to the examples which have just been described.

Claims

Claims

1. Method for controlling a rectifier (11), the rectifier (11) being connected, at input, in use, to each phase (9) of an AC source (8) to form a charging circuit, and being configured to consume, for each phase (9), an electric current as a function of a setpoint signal delivered by a corrector (32), the control method comprising the implementation of a parameterization step (40) comprising, for each phase (9) of the source (8), the following substeps: • calculation (42) of a corresponding inductance of the charging circuit from: • a predetermined nominal model of the inductance; • the electric current consumed by the rectifier (11); • the setpoint signal delivered by the corrector (32) and representative of a target current to be consumed by the rectifier (11); and • a transfer function of the corrector (32);• updating (44) of coefficients of the transfer function of the corrector (32) as a function of the determined inductance; and for each phase (9) of the source (8), the inductance of the charging circuit comprising at least one of an inductance of a coil (24) of a respective boost converter (28) of the rectifier (11) and a line inductance of said phase (9) of the source (8).;

2. A method according to claim 1, wherein, for each phase (9) of the source (8), the inductance of the load circuit is equal to a product of the nominal model by a constant, the calculation (42) of the inductance of the load circuit comprising an estimation of the constant.

3. Method according to claim 2, in which, for each phase of the source, the constant is estimated from the relation: [Math. 5] U(pl) K - T ----——--- ' ' * O' wyw j- \ J where: • K is the constant; • Te is a sampling period; • p is any calculation instant; • p - 1 is the calculation instant preceding the calculation instant p; • Im(p) is a value of the electric current consumed by the rectifier at the instant p; and • U'(p) is a value of a normalized reference signal delivered by the corrector at the calculation instant p, the normalized reference signal being equal to the result of dividing the reference signal by the nominal model.

4. Method according to claim 2 or 3, wherein, for each phase (9), the updated transfer function is equal to the result of a product between, on the one hand, a nominal transfer function determined for a nominal model of the coil (24) of the respective boost converter (28), and, on the other hand, the estimated constant.

5. Method according to any one of claims 1 to 4, wherein, for each phase (9) of the source (8), the calculation (42) of the inductance of the charging circuit depends, in addition, on a predetermined internal resistance of the coil (24) of the respective boost converter (28) of the rectifier (11).

6. Method according to any one of claims 1 to 5, comprising, prior to the update: • a first implementation of the calculation sub-step (42) to determine, for each boost converter (28) of the rectifier (11), the inductance of the corresponding coil (24), the source (8) to which the rectifier (11) is connected being a network simulator configured to simulate an AC network having, for each phase (9), a zero line inductance; • a second implementation of the calculation sub-step (42), subsequent to the first implementation of the calculation sub-step (42), in which the source (8) to which the rectifier (11) is connected is an AC network, and, for each phase (9) of the AC network, the corresponding line inductance being equal to the inductance of the determined load circuit from which the inductance of the coil (24) of the boost converter (28) of the rectifier connected to said phase.

7. Method according to any one of claims 1 to 6, in which, for each phase (9), the corrector (32) has a transfer function of which each of the numerator and the denominator is a polynomial of degree 1.

8. Control device (12) for controlling a rectifier (11) intended to be connected, at input, in use, to each phase (9) of an AC source (8) to form a charging circuit, and being configured to consume, for each phase (9), an electric current as a function of a setpoint signal delivered by a corrector (32), the control device (12) comprising a processing unit (36) configured to implement a parameterization step (40) comprising, for each phase (9) of the source (8), the following substeps: • calculation (42) of a corresponding inductance of the charging circuit from: • a predetermined nominal model of the inductance; • the electric current consumed by the rectifier (11); • the setpoint signal delivered by the corrector (32) and representative of a target current to be consumed by the rectifier (11); and • a transfer function of the corrector (32);• updating (44) of coefficients of the transfer function of the corrector (32) as a function of the determined inductance; and for each phase (9) of the source (8), the inductance of the charging circuit comprising at least one of an inductance of a coil (24) of a respective boost converter (28) of the rectifier (11) and a line inductance of said phase (9) of the source (8).;

9. Charger (6) comprising a rectifier (11) and a control device (12) according to claim 8 for controlling the operation of the rectifier (11).

10. Electric vehicle (2) comprising a charger (6) according to claim indication 9, the charger (6) being connected, at the output, to a battery (4) of the electric vehicle (2).

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