EP4229746A1 - Dispositif de détermination de la position angulaire d'un rotor de machine électrique tournante - Google Patents
Dispositif de détermination de la position angulaire d'un rotor de machine électrique tournanteInfo
- Publication number
- EP4229746A1 EP4229746A1 EP21786912.2A EP21786912A EP4229746A1 EP 4229746 A1 EP4229746 A1 EP 4229746A1 EP 21786912 A EP21786912 A EP 21786912A EP 4229746 A1 EP4229746 A1 EP 4229746A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- harmonic
- rotor
- signal
- phase
- representative
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/009—Circuit arrangements for detecting rotor position
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
Definitions
- the present invention relates to a device for determining the angular position of a rotating electrical machine rotor as well as an assembly comprising such a determining device and such a rotating electrical machine.
- the electrical machine is for example an alternator or an alternator-starter powered by a nominal voltage of 12V or 48V, or even more.
- This electric machine can be integrated into a vehicle with hybrid or purely electric propulsion, for example an automobile.
- the control of this electric machine requires knowledge of the angular position of the rotor of the machine. To do this, it is known in the case of a three-phase synchronous machine to use several Hall effect sensors whose signals are processed, after mathematical transformation such as a Clarke or Concordia transform, by an estimation circuit the position of the rotor, for example via a control loop. This circuit outputs a signal representative of this position of the rotor. This measurement can then be used, for example, to control the inverter/rectifier interposed between the stator of this electrical machine and the electrical energy storage unit of the on-board network of the vehicle, which is in particular a battery.
- the accuracy of the position obtained at the output of the rotor position estimation circuit depends largely on the accuracy of the signals supplied by the sensors.
- the magnetic targets of these sensors have magnetization profiles which can generate significant odd-order harmonics in the signal provided by these sensors.
- the presence of some of these odd order harmonics at the input of the rotor position estimation circuit can affect the precision of the angular position of the rotor. The control of the machine is thus affected.
- the object of the invention is to meet this need, and it achieves this, according to one of its aspects, with the aid of a device for determining the angular position of a rotor of a rotating electrical machine on the base of signals provided by several position sensors, device comprising:
- this dynamic processing circuit receiving as input:
- this dynamic processing circuit being configured for:
- an odd order harmonic present in the signal resulting from the signals supplied by the position sensors is dynamically compensated, so that the circuit for estimating the position of the rotor receives as input a signal in which the the harmonic in question has been compensated or greatly reduced in amplitude. This improves the precision of the signal representative of the position of the rotor, and consequently any other control using this signal representative of the position of the rotor.
- this improvement is obtained using a simple solution, which is implemented in the determination device upstream of the circuit forming the control loop. Furthermore, this solution has the advantage of not requiring over-sampling, and of not requiring additional calibration at the end of the line. In addition, this solution operates dynamically, and not only in steady state, and it has the advantage of being able to adapt to the evolution over time of this harmonic, whether this evolution is linked to the temperature or to the aging
- the signal is said to be at the harmonic considered when its frequency is the same as that of the harmonic considered.
- the signal representing the position of the rotor is for example an angle value with respect to a reference position. It may be the angle characterizing the electrical position or the angle characterizing the mechanical position of the rotor of the electrical machine.
- the dynamic processing circuit is arranged upstream of the circuit estimating the position of the rotor, in particular via the creation of a control loop.
- the dynamic processing circuit can output an input of the circuit estimating the position of the rotor.
- the signal resulting from the signals supplied by the position sensors received at the input of the dynamic processing circuit may have a cosine component and a sine component, the signals coming from the sensors having for example been processed by a circuit configured to apply to said signal a mathematical modeling transformation of a system, in particular of a three-phase system, into a two-phase system. This transformation uses for example a Clarke or Concordia matrix.
- the synchronous demodulation can consist of performing the following four demodulations:
- These four demodulations are for example synchronous demodulations.
- the generation of the signals representative of the phase and of the amplitude of the harmonic of odd order which one seeks to compensate can be carried out by applying a first low-pass filter to the linear combination of two results of the four aforementioned demodulations and by applying a second low-pass filter to the linear combination of the two other results of the aforementioned four demodulations, the first and the second low-pass filter being in particular identical.
- the choice of the cutoff frequency of the first and the second low-pass filter can make it possible to define the spectral domain around the harmonic that we want to compensate. Depending on the bandwidth chosen, it is thus possible to process not only the harmonic of odd order considered as a monochromatic frequency, but also a more or less wide spectral zone around this harmonic.
- the first low-pass filter can process the linear combination of:
- the second low-pass filter can process the linear combination of:
- the linear combination performed upstream of the first, respectively second, low-pass filter can be an addition or a subtraction, depending on the rank of the odd harmonic that one wishes to compensate.
- Each low-pass filter is for example a second-order filter. It can be a second-order recursive filter, but other types of filters are possible.
- the cutoff frequency of each of the first and of the second low-pass filter is for example 50Hz. However, the invention is not limited to such a cut-off frequency value or to the use of a fixed cut-off frequency, the latter possibly varying as a function of the speed of the rotor.
- the invention is not limited to the use of two low-pass filters in this step of generating signals representative of the phase and of the amplitude of the odd-order harmonic that it is sought to compensate.
- Four low-pass filters being for example all identical and of order 2, can thus be used and the first signal representative of the phase and of the amplitude of the harmonic of odd order which one seeks to compensate results from 'a linear combination of the output of two of these low-pass filters while the second signal representative of the phase and the amplitude of the odd-order harmonic that we seek to compensate results from a linear combination of the output of two more low-pass filters.
- the invention is not limited either to two signals representative of the phase and of the amplitude of the harmonic of odd order which it is sought to compensate. It is also possible to apply a low-pass filter to each demodulation and to use the output of each of these low-pass filters as a signal representative of the phase and the amplitude of the odd-order harmonic that the 'one seeks to compensate, in which case four signals are generated representative of the phase and of the amplitude of the harmonic of odd order which one seeks to compensate.
- the reconstruction of a signal at said harmonic may comprise the step consisting in carrying out the four following modulations:
- the reconstruction can be carried out by modulating the sine component of the reference signal to said harmonic and in phase with the signal representative of the position of the rotor by two of these four representative signals, and by modulating the cosine component of the reference signal at said harmonic and in phase with the signal representative of the position of the rotor by the two representative signals remaining.
- Each of these modulations is for example a synchronous modulation.
- the reconstruction of the signal at said harmonic may further comprise the step consisting in obtaining a first linear combination of the result of two of the aforementioned four modulations and a second linear combination of the result of the other two of the aforementioned four modulations. Similar to what was mentioned in connection with the step of generation of signals representative of the phase and of the amplitude of the harmonic which one seeks to compensate, each aforementioned linear combination can be an addition or a subtraction, according to the rank of the harmonic which one seeks to compensate .
- the first linear combination can be a linear combination of:
- the second linear combination can be a linear combination of:
- Compensation of said harmonic can be performed by subtracting from the cosine component of the signal resulting from the signals supplied by the position sensors one of the first and second linear combinations, in particular the second linear combination, and by subtracting from the sine component of the signal resulting from the signals supplied by the position sensors the other of the first and of the second linear combination, in particular the first linear combination. After these subtractions, these two components can be recombined to form the output signal of the dynamic processing circuit.
- the circuit for dynamic processing of the odd-order harmonic can further comprise at least one unit for storing the values of the signals representative of the phase and the amplitude of the odd-order harmonic that are seeks to compensate and, when the rotational speed of the rotor of the electric machine passes within a range of predefined values, the representative signals are no longer used to reconstruct the signal at said harmonic, this reconstruction being carried out using the values of these representative signals present in the storage unit before the speed of the rotor passes into said range of values.
- the range of predefined values is for example centered on a speed for which a folding of the harmonic of odd order that one seeks to compensate is likely to occur towards the fundamental of the signal resulting from the signals supplied by the position sensors.
- the dynamic processing circuit would compensate not only for said odd-order harmonic, but also the fundamental, which would greatly impair the precision of the circuit producing the control loop.
- This predefined speed range is for example centered on a high speed depending among other things on the number of pairs of poles of the machine, for example 16,500 rpm for a machine with six pairs of poles and a sampling frequency of 10 kHz .
- the compensation of the odd order harmonic can be carried out permanently, as described above.
- the compensation of the odd-order harmonic is performed by the dynamic processing circuit only beyond a threshold speed of rotation of the rotor of the electric machine, for example beyond a speed minimum rotor rotation. Below this minimum speed of rotation, which is for example 100, 200, 300, 400, 500, 600 or 700 rpm, no compensation of said harmonic of odd order is then performed according to this variant.
- the dynamic processing circuit can have two operating ranges.
- a first operating range corresponds to speeds below the threshold speed and is characterized by the non-compensation of the considered odd order harmonic.
- the operation of the circuit is for example neutralized by applying a zero gain to the aforementioned first and second linear combinations.
- the second operating range corresponds to speeds above the threshold value. In this second range, the gain applied to the aforementioned first and second linear combinations can be equal to 1.
- a transition can be implemented when switching from the first to the second operating mode and, during this transition, the value of the gain applied to the first and second linear combinations can pass gradually or in steps from 0 to 1. This transition is for example obtained by applying a low-pass filter to a signal for detecting the speed threshold, this filter being for example a first-order filter
- the harmonic compensated by the dynamic processing circuit is for example the 5th order harmonic, or the 7th order harmonic, or the 11th order harmonic.
- the device can comprise at least two processing circuits dynamics arranged in series, one of these circuits compensating for a harmonic of given odd order and the other harmonic circuit compensating for another harmonic of given odd order. For example, one circuit processes the 5th harmonic and another circuit processes the 7th harmonic. If necessary, another additional circuit processes the 11th harmonic.
- the device further comprises a circuit for dynamic normalization by the amplitude of the first harmonic of each signal from a position sensor, as described in the application filed by the Applicant in France on December 20, 2019 under the number 19 15288.
- Another subject of the invention is an assembly comprising:
- a device for controlling this electric machine comprising a determining device as defined above.
- the rotating electrical machine is for example a synchronous machine, for example a three-phase synchronous machine or a synchronous machine whose electrical stator winding defines a double three-phase system.
- the electric stator winding is for example formed by wires or by conductive bars connected to each other.
- the rotor may be a claw rotor.
- This rotor then comprises a first and a second nested pole wheels, the first pole wheel defining a series of claws of generally trapezoidal shape, each claw extending axially in the direction of the second pole wheel, the second pole wheel defining a series of claws of generally trapezoidal shape, each claw extending axially in the direction of the first pole wheel.
- a permanent magnet can be received between two consecutive claws circumferentially speaking for the rotor.
- the rotor may be other than a claw rotor, for example comprising a stack of laminations or being a cage rotor.
- the rotor may comprise any number of pairs of poles, for example six or eight pairs of poles.
- the electrical machine may include a stator cooling circuit in which fluid such as air or liquid circulates.
- fluid such as air or liquid circulates.
- This liquid can be water or oil.
- the rotor can be cooled by this same cooling circuit or by another cooling circuit in which air circulates, or liquid such as water or oil.
- the rotating electrical machine may have a nominal electrical power of 4 kW, 8 kW, 15 kW, 25 kW or more.
- This rotating electrical machine can be electrically supplied from an electrical energy storage unit via an inverter/rectifier of the assembly, this inverter/rectifier making it possible, depending on whether the electrical machine operates as a motor or as a generator, to charge a vehicle's on-board network or to be electrically supplied from this network.
- the nominal voltage of the electric energy storage unit can be 12 V, 48 V or have another value, for example another value greater than 300 V.
- the rotating electrical machine may also include a pulley or any other means of connection to the rest of the vehicle's powertrain.
- the electric machine is for example connected, in particular via a belt, to the crankshaft of the heat engine of the vehicle.
- the electric machine is connected to other locations of the powertrain, for example at the input of the gearbox from the point of view of the torque transiting towards the wheels of the vehicle, at the output of the gearbox from the point from the point of view of the torque transiting towards the wheels of the vehicle, at the level of the gearbox from the point of view of the torque transiting towards the wheels of the vehicle, or even on the front axle or the rear axle of this powertrain.
- the rotating electrical machine is not necessarily a synchronous machine, it can be an asynchronous machine.
- Another subject of the invention is a method for determining the angular position of a rotor of a rotating electrical machine on the basis of signals supplied by several position sensors, in which a determination as defined above.
- This method of determination is for example integrated into a method of controlling the electric machine, in which the angular position of the rotor determined as above is used to control the motor torque and/or the current of the storage unit of electric energy.
- FIG. 1 shows schematically and in axial section an example of a rotating electrical machine to which the invention can be applied
- Figure 2 shows in elevation another type of rotor than that of Figure 1
- FIG. 3 schematically shows the device for determining the position of the rotor of the machine according to a non-limiting example of implementation of the invention
- - Figure 5 schematically shows an embodiment of a low-pass filter of the dynamic processing circuit of Figure 4
- - Figure 6 shows on a first graph: the estimated speed of the rotor of the electric machine as a function of time in response to the same speed setpoint, with and without processing of the 5th harmonic using the device according to an example of implementation of the invention, and on a second graph: the difference between the real angular position of the rotor and that estimated with and without processing of the odd order harmonic, with this same speed setpoint, and
- FIG. 1 a rotating electrical machine 1 polyphase, in particular for a motor vehicle, to which the invention can be applied.
- This rotating electrical machine can form an alternator or an alternator-starter of the vehicle.
- This rotating electrical machine can be powered via a power electronic component 9 comprising an inverter/rectifier by a battery whose nominal voltage is 12 V or 48 V or a value greater than 300 V, for example.
- the rotating electrical machine 1 comprises a casing 2. Inside this casing 2, it further comprises a shaft 3, a rotor 4 integral in rotation with the shaft 3 and a stator 5 surrounding the rotor 4. The rotational movement of the rotor 4 takes place around an axis X.
- the casing 2 comprises a front bearing 6 and a rear bearing 7 which are assembled together. These bearings 6, 7 are hollow in shape and each carry, centrally, a respective ball bearing 10, 11 for the rotational mounting of the shaft 3.
- a pulley 12 is in the example considered fixed on a front end of the shaft 3, at the level of the front bearing 6, for example using a nut resting on the bottom of the cavity of this pulley.
- This pulley 12 makes it possible to transmit the rotational movement to the shaft 3 and it can be connected via a belt to the crankshaft of the heat engine of the vehicle.
- the rear end of shaft 3 carries, here, slip rings belonging to a collector and connected by wire connections to the winding. Brushes belonging to a brush holder 8 are arranged so as to rub on the slip rings.
- the front bearing 6 and the rear bearing 7 may also comprise substantially lateral openings for the passage of air in order to allow the cooling of the rotary electrical machine by circulation of air generated by the rotation of a fan.
- the stator 5 comprises a body 15 in the form of a stack of laminations provided with notches, for example of the semi-closed or open type, equipped with insulator slots for mounting the polyphase electric winding of the stator.
- Each phase comprises a winding 16 passing through the notches of the body 15 and forming, with all the phases, a front bun and a rear bun on either side of the body of the stator.
- the windings 16 are for example obtained from a continuous wire covered with enamel or from conductive elements in the form of a bar such as pins connected together.
- the electrical winding of the stator is for example three-phase, then implementing a star or triangle connection, the outputs of which are connected to the electronic power component 9.
- the rotor 4 of FIG. 1 is a claw rotor. It comprises two pole wheels 17. The first pole wheel 17 is turned towards the electronic power component 9 while the second pole wheel 17 is turned towards the pulley 12.
- Each of the pole wheels 17 comprises a bottom 18 extending radially on either side of the axis X, the wheel defining a series of claws 19 of generally trapezoidal shape.
- Each claw of a pole wheel 17 extends axially in the direction of the other pole wheel from a base arranged on the radially outer periphery of the bottom 18.
- the rotor 4 further comprises, between the radially inner portions 20 and the claws 19, a coil wound on a coil insulator 22.
- the rotor 4 may also include permanent magnets (not shown) interposed between two adjacent claws 19 at the outer periphery of the rotor.
- the rotor 4 can be devoid of such permanent magnets.
- the rotor 4 can still be different from that shown in Figure 1, being for example formed by a stack of sheets, as shown in Figure 2.
- the number of pairs of poles defined by the rotor 4 can be arbitrary, for example be equal to six or eight.
- the machine further comprises sensors 20 for measuring the position of the rotor 4, for example three Hall effect sensors, grouped together in the same plastic casing. These sensors are for example positioned at the level of the rear bearing 7 of the machine and they interact with a magnetic target integral in rotation with the rotor.
- the measurements provided by these sensors 20 are used by the device 100 for determining the angular position of the rotor 4, which will now be described with reference to FIGS. 3 to 5.
- the device 100 comprises a circuit 101 carrying out a discretization of the signals acquired by each position sensor 20.
- This circuit 101 carries out for example a sampler/hold function then a mathematical transformation for modeling the system, which is in the three-phase example, into a two-phase system.
- This transformation uses for example a Clarke or Concordia matrix. Other transformations can be used when the number of position sensors is different from three.
- the output signal of this circuit 101 drives a circuit 102 for dynamic processing of an odd order harmonic of this signal.
- This is for example the 5th order harmonic, or the 7th order harmonic or the 11th order harmonic.
- This circuit 102 will be described later.
- the signals at the output of the circuit 102 are received at the input of a circuit 103 supplying at the output a signal representative of the position of the rotor 4, via an angle 0 measured with respect to a reference position of this rotor, as well as the rotational speed of the rotor, which corresponds to the time derivative of this angle.
- This angle corresponds in the example described to the electrical angle characterizing the position of the rotor 4.
- This circuit 103 here implements a control loop for the position of the rotor 4.
- the circuit 103 is for example identical to that described in the aforementioned French application with deposit number 19 15288.
- the dynamic processing circuit 102 also receives as input the two outputs of the circuit 103, namely the signal representative of the position of the rotor 4 as well as the speed of this rotor 4.
- circuit 102 for processing an odd order harmonic The operation of an example of circuit 102 for processing an odd order harmonic will now be described.
- a comparison is first made by a block 110 of circuit 102 between the rotational speed of rotor 4 of the electric machine, as estimated at the output of circuit 103, and a threshold speed of rotation, for example equal to 500 rev /min. Below this threshold speed, the circuit has a first operating range in which its operation is neutralized, as explained below, the circuit 102 output corresponding to its input.
- circuit 102 has a second operating range.
- the processing of the odd order harmonic implements the following steps:
- a block 120 receiving as input the angle of rotation of the rotor 4 of the electric machine as estimated at the output of the circuit 103 generates a reference signal at this harmonic and in phase with the signal representative of the position of the rotor.
- this signal applies to this angle a gain 121 being an odd integer corresponding to the rank of the harmonic to be compensated, for example five, seven or eleven.
- a cosine component 122 whose frequency corresponds to this harmonic and in phase with the signal representing the position of the rotor, and a sine component 123 whose frequency corresponds to this harmonic and in phase with the signal representing the position of the rotor are then generated.
- Another block 130 receives as input the signal at the output of circuit 101, which corresponds to a signal resulting from the signals supplied by the sensors, and outputs the cosine component 131 and the sine component 132 of this signal.
- the outputs of these blocks 120 and 130 then drive a block 140 performing the step of generating the two signals representative of the amplitude and the phase of the odd-order harmonic that is to be compensated.
- This block 140 here implements four synchronous demodulations, namely:
- a gain 142 which is for example equal to 1 or -1, is applied to the signal resulting from the synchronous demodulation of the cosine component 131 by the cosine component 122 of the reference signal to said harmonic and in phase with the signal representative of the position of the rotor
- a gain 143 which can also be equal at 1 or -1, is applied to the signal resulting from the synchronous demodulation of the cosine component 131 by the sine component 123 of the reference signal to said harmonic and in phase with the signal representative of the position of the rotor.
- the value of these gains depends on the value of the rank of the harmonic that is to be compensated. For the 5th harmonic for example, the gain 142 is equal to -1 and the gain 143 is equal to 1.
- Adders 144 and 145 are present, adder 144 receiving as input:
- the signal at the output of adder 144 then drives a first low-pass filter 146 and the signal at the output of adder 145 drives a second low-pass filter 147.
- These two low-pass filters 146 and 147 are for example identical and are both second-order filters. Each of these filters has, for example, a cut-off frequency equal to 50 Hz. These filters are for example made in accordance with what is shown in Figure 5.
- a block 150 performs the following four modulations: - the synchronous modulation of the cosine component 122 of the reference signal to said harmonic and in phase with the signal representative of the position of the rotor by the first representative signal 148,
- a gain 152 which is for example equal to 1 or -1, is applied to the signal resulting from the modulation of the cosine component 122 of the reference signal to said harmonic and in phase with the signal representative of the position of the rotor by the second representative signal 149
- a gain 153 which can also be equal to 1 or -1, is applied to the signal resulting from the modulation synchronous with the cosine component 122 of the reference signal to said harmonic and in phase with the signal representative of the position of the rotor by the first representative signal 148.
- the value of these gains depends on the value of the rank of the harmonic that the we try to compensate. For the 5th harmonic, the gain 152 is for example equal to 1 and the gain 153 is equal to -1.
- This block 140 then produces, via an adder 155, a first linear combination of the output of the gain 152 and of the signal resulting from the synchronous modulation of the sine component 123 of the reference signal at said harmonic and in phase with the signal representative of the position of the rotor by the first representative signal 148, as well as via a summer 156 a second linear combination of the output of the gain 153 and of the resulting signal the synchronous modulation of the sine component 123 of the reference signal at said harmonic and in phase with the representative signal of the position of the rotor by the second representative signal 149.
- Block 110 determines at 114 a gain value 159 applied to the output of adder 155 and to the output of adder 156.
- the value of this gain 159 depends on the operating range in which circuit 102 is located. When the circuit 102 is in the first operating range, the value of the gain 159 can be zero, so that the processing of the considered odd order harmonic is neutralized. When circuit 102 is in the second operating range, the value of gain 159 can be equal to 1.
- the gain value 159 gradually passing from 0 to 1 for example.
- the first linear combination of the sine component 132 is subtracted via an operator 160 and via an operator 161 the second linear combination of the cosine component 131.
- Curve 200 corresponds to the speed of rotation of the rotor that circuit 103 would provide in the absence of dynamic processing circuit 102 according to the invention and curve 201 corresponds to this speed of rotation at the output of circuit 103 when circuit 102 which comes to be described is arranged upstream of the circuit 103.
- Curve 203 corresponds to the error between the rotor position setpoint and the position of this rotor 4 that circuit 103 would provide in the absence of dynamic processing circuit 102 according to the invention and curve 204 corresponds to this same error when the circuit 102 which has just been described is arranged upstream of the circuit 103.
- the dynamic processing circuit 102 permanently compensates for the considered odd order harmonic, no threshold speed then existing.
- FIG. 7 differs from that described with reference to FIG. 4 by the number of low-pass filters in block 140. If two signals 148 and 149 representative of the phase and the amplitude of the harmonic of odd rank that it is sought to compensate for are always generated at the output of this block 140, four low-pass filters 180 are provided here, each of these low-pass filters 180 processing the result of one of the four demodulations described with reference to Figure 4. Two low-pass filters 180 have their output linearly combined to form the first signal representative 148 of the phase and amplitude of said harmonic and two other low-pass filters 180 have their output linearly combined to form the second signal representative 149.
- FIG. 8 differs from that described with reference to FIG. 7 by the number of signals representative of the phase and of the amplitude of said harmonic of odd order which are obtained at the output of block 140.
- the outputs of the low-pass filters 180 are here not linearly combined and each constitute, after application of a gain 181 , a signal 182 representative of the phase and of the amplitude of the harmonic of odd order which it is sought to compensate.
- Each of these representative signals 182 is then used by the block 150 to perform four modulations, similar to what has been described with reference to FIG. 4.
- One of these representative signals 182 is for example combined with the sine component 123 of the signal reference to said harmonic and in phase with the signal representative of the position of the rotor, another of these representative signals 182 is combined with the sine component 123 of the reference signal to said harmonic and in phase with the signal representative of the position of the rotor , another of these representative signals 182 is combined with the cosine component 122 of the reference signal at said harmonic and in phase with the signal representative of the position of the rotor, and finally another of these representative signals 182 is combined with the component 122 in cosine of the reference signal to said harmonic and in phase with the signal representative of the position of the rotor.
- FIG. 9 differs from that described with reference to FIG. 4 by the additional presence of a block 170 interposed between block 140 and block 150 of circuit 102 of FIG. 4 and by a corresponding modification of block 110
- This block 170 comprises two storage units 171 and 172 and two multiplexers 173 and 174.
- This block makes it possible to modify the compensation of the odd order harmonic considered when the circuit 102 detects that the speed of rotation of the rotor passes within a range preset speed.
- This predefined speed range is here centered on a speed for which a folding of this harmonic down to the fundamental occurs, for example a speed of 16,500 rpm.
- each storage unit 171, 172 is interposed between an output of block 140 and an input of the multiplexer, another input of which is directly connected to the output of block 140.
- each storage unit 171, 172 records the values of the signal at the output of the corresponding block 140 and these values are received at the input of the multiplexer 173, 174 and used as first representative signal 148 and second representative signal 149 in the block 150.
- the block 110 sends to the storage units 171, 172 the instruction not to no longer record the values of the corresponding signal at the output of block 140 and modifies the configuration of multiplexer 173, 174 so that:
- Block 170 which has just been described with reference to Figure 9 may still be present in the examples of Figures 7 and 8.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2010685A FR3115362B1 (fr) | 2020-10-19 | 2020-10-19 | Dispositif de détermination de la position angulaire d’un rotor de machine électrique tournante |
| PCT/EP2021/077318 WO2022084017A1 (fr) | 2020-10-19 | 2021-10-04 | Dispositif de détermination de la position angulaire d'un rotor de machine électrique tournante |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4229746A1 true EP4229746A1 (fr) | 2023-08-23 |
Family
ID=74045769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21786912.2A Pending EP4229746A1 (fr) | 2020-10-19 | 2021-10-04 | Dispositif de détermination de la position angulaire d'un rotor de machine électrique tournante |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12483166B2 (fr) |
| EP (1) | EP4229746A1 (fr) |
| CN (1) | CN116391320A (fr) |
| FR (1) | FR3115362B1 (fr) |
| WO (1) | WO2022084017A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3141520B1 (fr) | 2022-10-28 | 2024-11-08 | Inst Polytechnique Grenoble | Dispositif de détermination de la position et/ou de la vitesse d’une partie mobile d’une machine électrique et procédé associé |
| CN117516596B (zh) * | 2024-01-05 | 2024-04-26 | 华中科技大学 | 一种磁电编码器的高精度在线补偿方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9720954D0 (en) * | 1997-10-02 | 1997-12-03 | Scient Generics Ltd | Commutators for motors |
| JP3529752B2 (ja) * | 2001-02-16 | 2004-05-24 | 本田技研工業株式会社 | Dcブラシレスモータのロータ角度検出装置 |
| FR2829200B1 (fr) * | 2001-09-06 | 2004-12-31 | Mecanique Magnetique Sa | Dispositif et procede de compensation automatique de perturbations synchrones |
| JP4234359B2 (ja) * | 2002-06-27 | 2009-03-04 | オークマ株式会社 | 同期電動機の制御装置 |
| US8169172B2 (en) * | 2010-05-03 | 2012-05-01 | Hamilton Sundstrand Corporation | Synchronous disturbance suppression in a variable speed motor drive |
| CN103701392B (zh) * | 2013-12-17 | 2016-01-20 | 华中科技大学 | 一种基于自适应陷波器的电流谐波补偿系统 |
-
2020
- 2020-10-19 FR FR2010685A patent/FR3115362B1/fr active Active
-
2021
- 2021-10-04 WO PCT/EP2021/077318 patent/WO2022084017A1/fr not_active Ceased
- 2021-10-04 EP EP21786912.2A patent/EP4229746A1/fr active Pending
- 2021-10-04 US US18/245,442 patent/US12483166B2/en active Active
- 2021-10-04 CN CN202180071514.4A patent/CN116391320A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3115362A1 (fr) | 2022-04-22 |
| US12483166B2 (en) | 2025-11-25 |
| CN116391320A (zh) | 2023-07-04 |
| WO2022084017A1 (fr) | 2022-04-28 |
| FR3115362B1 (fr) | 2022-12-30 |
| US20230336100A1 (en) | 2023-10-19 |
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