EP3387743A1 - Procédé de compensation des effets non-linéaires d'un onduleur de tension - Google Patents
Procédé de compensation des effets non-linéaires d'un onduleur de tensionInfo
- Publication number
- EP3387743A1 EP3387743A1 EP16819607.9A EP16819607A EP3387743A1 EP 3387743 A1 EP3387743 A1 EP 3387743A1 EP 16819607 A EP16819607 A EP 16819607A EP 3387743 A1 EP3387743 A1 EP 3387743A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- value
- voltage
- compensation
- amplitude value
- compensation method
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- H02M1/38—Means for preventing simultaneous conduction of switches
-
- 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
- H02M1/38—Means for preventing simultaneous conduction of switches
- H02M1/385—Means for preventing simultaneous conduction of switches with means for correcting output voltage deviations introduced by the dead time
Definitions
- the present invention relates to a method for compensating non-linear effects produced in particular by the addition of a dead time in a pulse width modulation control of a voltage inverter powered by a continuous bus and able to provide the at least one electrical phase for supplying an electric machine with N> 1 supply phase.
- an inverter In the field of electrical engineering, an inverter is frequently used to power a rotating electrical machine, for example a machine with three-phase power supply.
- the voltage inverter receives a DC voltage and transforms it into an AC voltage, for example into three AC voltages for supplying the phases of an electric machine.
- a voltage inverter comprises a plurality of switching arms connected in parallel between two supply lines. These are connected to the same DC voltage source. Each arm has at least two power switches, in series with a connection midpoint connected to the electrical load.
- the switching arms are controlled by so-called pulse width modulation strategies, known by their acronym MLI or its English equivalent, Ince Width Modulation, PWM.
- the latter caused by the non-ideal characteristics of the components that make up the power module, is the difference between the desired ideal output voltage, referred to as the reference voltage, and the actual output voltage supplied by the inverter. Due to the non-linear character of the inverter, the actual output voltage is deviated from the reference voltage.
- a first solution is to adopt a direct type approach through predefined measurement tables.
- the voltages are corrected with a predetermined correction value, which is a function of the operating conditions of the machine.
- this compensation is not effective enough, because, on the one hand, the inherent characteristics of the switching devices are variable, in particular as a function of the operating speed of the electric machine, the frequency, the DC bus voltage. and temperature, and secondly, the manual measurement of these different parameters is in itself a laborious and difficult process because these parameters vary from one inverter to another.
- a method for compensating non-linear effects produced by the addition of a dead time in a pulse width modulation control of a voltage inverter fed by a continuous bus and capable of supplying at least one electrical phase for supplying an electric machine with N> 1 supply phase, in particular with 3 supply phases said compensation method comprising a step of evaluating a compensation voltage, said evaluation step comprising:
- the estimation step aims at determining a total amplitude of compensation voltage making it possible to reduce the harmonics of rank 2N of said transformed phase current value.
- the estimate of the representative value of the harmonics of rank 2N is performed by an adaptive bandpass filter.
- a value strictly dependent on the DC bus voltage, the added dead time and the PWM period used is imposed.
- one defines, on the one hand, a known fixed amplitude value, and on the other hand, an error is calculated cumulative, also called cumulative sum, of a plurality of representative values of harmonics of rank 2N calculated over a period of time corresponding to a fraction 1 / 2N of fundamental period.
- said fixed amplitude value is defined as a function of the amount of dead time added, and said variable amplitude value is estimated as a function of said cumulative error.
- variable amplitude value is estimated as a function of the variations of a plurality of cumulative errors previously calculated.
- variable amplitude value is estimated as a function of at least one previously calculated amplitude value.
- said total amplitude value is calculated as a function of said variable amplitude value and said fixed amplitude value.
- the step of calculating said compensation voltage comprises a multiplication of said estimated total amplitude value with the sign of the determined phase current.
- the high frequencies of said transformed current value are filtered.
- said anticipative action compensation voltage also known under the English name of "feed-forward" is injected to modify the reference voltages used for controlling the PWM command.
- the method is implemented for each of the N phases of said electric machine.
- FIG. 1 is a diagram of a step of evaluating a compensation voltage of the non-linear effects of an inverter according to one embodiment of the invention
- FIG. 2 is a diagram detailing the step of determining the sign of the process current according to the embodiment of FIG. 1;
- FIG. 3 is a diagram detailing the step of estimating a total amplitude value of the compensation voltage of the method according to the embodiment of FIG. 1;
- FIGS. 4a and 4b are representations of bandpass filters for filtering the rank six harmonics of the phase current in a rotational plane according to the embodiment of FIG. 1;
- FIG. 5 is a logic diagram showing a step of minimizing rank six harmonics of the phase current in a rotational plane according to the embodiment of FIG. 1;
- FIG. 6 is a representation of a method for filtering rank six harmonics of the phase current in a rotational plane according to one embodiment of the invention.
- FIG. 7 is a global representation of anticipatory action compensation.
- a compensation method, not shown, of the non-linear effects produced by the addition of a dead time 220 in a pulse width modulation control 210 of a voltage inverter 100 fed by a continuous bus and capable of supplying at least one electrical phase for supplying an electric machine with N> 1 supply phase comprises a step 230 of evaluating a compensating voltage A nk) effects nonlinear of the inverter 100, especially during the switching phases.
- Evaluation step 230 comprises a step of determining b1 of the sign of each of the phase currents, an estimation step b2 of a value of total amplitude v4 (v) of the compensation voltage v ⁇ k) and a step 232 of calculating said compensation voltage Av ⁇ k).
- Steps b1 and b2 are performed in parallel and jointly make it possible to obtain the compensation voltage at v ⁇ k).
- each of the phase currents i is transformed into a rotational plane
- the transformation of a current i in the rotational plane ⁇ ) is carried out by a transformation of Park of an angle 0 eIec , which corresponds to the mathematical tool allowing to realize a change of reference where one passes from a plane stationary to a rotating or rotational plane.
- the term "stationary plane ( ace )" means the reference linked to the stator of the electric machine.
- rotational plane means the Park plane where a three-phase system is modeled by means of a two-phase system whose two components, one which is along the axis d and the other along the axis q, do not depend on of the electric angle 0 eIec .
- This rotating mark is connected to the rotor or to the magnetic field in the gap of the electric machine.
- the transformation of a phase current i in the rotational plane dq by the Park transform produces two signals ld and lq each being a component of the phase current i in the plane (dq).
- Step b1 makes a determination of the sign of each of the phase phase currents i of the machine.
- a low-pass filter b1 With the aid of a low-pass filter b1 1, the high-frequency components of the signals ld and lq, which are due to the switching phenomena of the power electronics components in each arm of the inverter 100, are eliminated while at the same time impacting the phase currents ia, ib, ic. Thus, filtered ld and lq signals b12 corresponding to the phase currents in the Park plane are obtained.
- the filtered phase currents ia, ib, ic b14 are then reconstructed as a function of the filtered signals ld and lq b12 using the inverse Park transform b13.
- a step b15 the sign of the phase currents ia, ib, ic is determined as a function of the reconstructed currents b14.
- the step of determining the compensating voltage amplitude b2 is carried out, with reference to FIG. 3, which makes it possible to determine the total amplitude v (k) of the compensation voltage Av (k). according to the currents in the rotational plane d ⁇
- a first step b21 of the determining step b2 of the total amplitude F (fe) of the compensation voltage the harmonic of rank six is estimated for each of the two components, d and q of the current vector in the rotational plane ⁇ ).
- the harmonic of rank six which appears in the plane ( dq reflects the existence of undesirable nonlinear effects, and thus the presence of an error which must be compensated until minimization of the harmonic of rank six.
- the filtered signals ld and lq in the plane of Park through an adaptive band pass filter, so as to obtain 6d h and h 6q filtered signals b22 corresponding to harmonics of order six phase currents in the plan of Park.
- Figs. 4a and 4b each show an embodiment of the adaptive bandpass filter so that its cut-off pulse adapts to changes in the rotor speed of the electric machine.
- the band-pass filter is represented in FIG. 4a and is defined by a transfer function of the form:
- k 2 and k 1 are filter adjustment coefficients well known to those skilled in the art.
- a straightening step b23 is performed for the filtered signals h 6d and h 6q b22.
- a calculation operation of an absolute value is applied for each of the filtered signals h 6d and h 6q b22.
- the corrected h 6d and h 6q signals b24 will subsequently be called error b24. Indeed, these rectified signals b24 correspond to the error associated with the non-linear effects that we wish to compensate, in particular to the non-linearity introduced by the inverter 100.
- a step of accumulating the error b25, called the cumulative error b25, in which the rectified signal b24 at time k is integrated over a corresponding duration is implemented. to a sixth fundamental period for a three-phase network, or 1 / 2N for an N-phase network.
- the cumulative error b26 is reset to zero at each 1/6 fundamental period, by a trigger signal, called trigger signal, issued by one of the computers of the system.
- the final value is recovered which corresponds to the fixed value b28 of the accumulated error in the previous period.
- This fixed value b28 is stored in a buffer memory b27 so as to keep it constant for the entire duration of 1/6 of the next fundamental period.
- a step of minimizing b29 of the error b28 is carried out, as a function of the accumulated fixed error value b28, making it possible to obtain the unknown and variable amplitude b30, sr (k) which is the first component of the voltage compensation Av (k).
- the step of minimizing b29 of the error b28 comprises an initial step b292 of supplying the values of the fixed error b28 to the present step (k), of the amplitude ar ⁇ k - 1 ⁇ b299 at the preceding step (k- 1) and a voltage adjustment value b291 defining the speed of convergence of the minimization step b29 of the error b28.
- the variable concerned is initialized to zero.
- the voltage adjustment value b291 is imposed by those skilled in the art. It can be of a fixed nature or of an adaptive nature. The higher this value b291 is, the more the method will make it possible to obtain a fast convergence, but by reducing its precision, and on the contrary the smaller this value, the more the process will allow a slow but precise convergence.
- the sign of the evolution of the compensation voltage amplitude b299 applied with respect to the amplitude at the previous step (k-1) is determined b294, b295. In other words, it is estimated whether the amplitude of the compensation voltage b299 at the previous steps increases or decreases.
- Figure 5 shows two different logic blocks b294 and b295 but these refer to the same process step, separated in two for better understanding.
- a step of decrementing 298 of the voltage amplitude 234 is then carried out by subtracting from the amplitude value v ⁇ ik) at the previous step b299, the adjustment value & b291.
- An incrementation step b297 of the voltage amplitude 234 is then carried out by adding to the magnitude value ⁇ w (fc) at previous step b299 the adjustment value b291. If the sign of the evolution of the error is negative and if the sign of the evolution of the amplitude of tension is positive then the error b28 decreases.
- An incrementation step b297 of the voltage amplitude 234 is then carried out by adding the adjustment value b291 to the amplitude value ar (k) at the previous step b299.
- a step of decrementing b296 of the voltage amplitude 234 is then carried out by subtracting from the amplitude value 3 ⁇ 4 ffir (fc) at the previous step b299 the adjustment value & b291.
- a second step b34 the amplitude is added with a fixed amplitude value v fix . e (k to obtain a total amplitude value v (k).
- a calculation step 232 of the compensation voltage Av (k) is carried out at time k, during which the product is calculated between the current sign value i obtained in step b1 with the value of total amplitude v (k) determined in step b2 at the same instant.
- said compensation voltage is injected at -u (k) by anticipatory action, also known by the English term “feed-forward”, so that to modify the amplitude of the reference voltages 211 used for the control of the strategy, or command, MLI 210.
- anticipatory action also known by the English term “feed-forward”
- the harmonics in the Park plane are estimated with an angle of rotation ( ⁇ 1 ).
- Each of these transforms converts the harmonic of rank ( 6k ⁇ l ) ! which is an alternating component (AC) in the stationary plane ( abc into a continuous component (DC) in its own rotational plane.
- the same principle applies for a rotation of elec .
- the harmonic 7 becomes a DC component
- the fundamental will be a harmonic component of rank 6
- the harmonic 5 becomes a harmonic component of rank 12.
- the harmonic 5 is directly estimated in the real plane. Then, using a suitable Park transformation, the rms value is calculated in the appropriate rotational plane. Thus, one works directly in the stationary plane ( abc ) or in the fixed plane ( ⁇ ). So just with a filter adaptive bandpass as described above with reference to FIGS. 4a and 4b, to estimate the harmonic 5. However, the following adaptations must be made:
- the "trigger" signal is sent every 1/5 of fundamental period, instead of every 1/6 of fundamental period.
- a digital integrator which acts on an error equal to the difference between a reference, denoted s ref and fixed by the skilled person, and the estimated signal b26.
- the difficulty lies in the fact that the signal b26 does not change sign and the reference must be changed and adapted to each operating point, provided that the impact of the non-linear effects varies inversely proportional to the variation of the signal. speed (which is the picture of the tension).
- the step of incrementation is defined so that it is of very fine value, which the skilled person knows how to choose.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1562103A FR3045240B1 (fr) | 2015-12-10 | 2015-12-10 | Procede de compensation des effets non-lineaires d'un onduleur de tension. |
| PCT/FR2016/053208 WO2017098125A1 (fr) | 2015-12-10 | 2016-12-05 | Procédé de compensation des effets non-linéaires d'un onduleur de tension |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3387743A1 true EP3387743A1 (fr) | 2018-10-17 |
Family
ID=55759711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16819607.9A Withdrawn EP3387743A1 (fr) | 2015-12-10 | 2016-12-05 | Procédé de compensation des effets non-linéaires d'un onduleur de tension |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3387743A1 (fr) |
| FR (1) | FR3045240B1 (fr) |
| WO (1) | WO2017098125A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932584B (zh) * | 2019-12-05 | 2021-11-19 | 深圳市汇川技术股份有限公司 | 逆变器非线性补偿方法、系统、设备及存储介质 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004080954A (ja) * | 2002-08-21 | 2004-03-11 | Nissan Motor Co Ltd | モータ制御装置 |
| JP2007104813A (ja) * | 2005-10-05 | 2007-04-19 | Matsushita Electric Ind Co Ltd | モータ駆動用インバータ制御装置 |
| JP5078925B2 (ja) * | 2009-02-23 | 2012-11-21 | 三菱電機株式会社 | 電動機の駆動装置並びに機器 |
-
2015
- 2015-12-10 FR FR1562103A patent/FR3045240B1/fr active Active
-
2016
- 2016-12-05 EP EP16819607.9A patent/EP3387743A1/fr not_active Withdrawn
- 2016-12-05 WO PCT/FR2016/053208 patent/WO2017098125A1/fr not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004080954A (ja) * | 2002-08-21 | 2004-03-11 | Nissan Motor Co Ltd | モータ制御装置 |
| JP2007104813A (ja) * | 2005-10-05 | 2007-04-19 | Matsushita Electric Ind Co Ltd | モータ駆動用インバータ制御装置 |
| JP5078925B2 (ja) * | 2009-02-23 | 2012-11-21 | 三菱電機株式会社 | 電動機の駆動装置並びに機器 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2017098125A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017098125A1 (fr) | 2017-06-15 |
| FR3045240A1 (fr) | 2017-06-16 |
| FR3045240B1 (fr) | 2019-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1881594B1 (fr) | Procédé d'ajustement de paramètres d'un moteur synchrone et variateur de vitesse utilisant un tel procédé | |
| FR2752111A1 (fr) | Procede et dispositif de commande d'onduleurs | |
| FR2971649A1 (fr) | Onduleur de puissance et dispositif de commande de direction assistee electrique | |
| EP2613432B1 (fr) | Compensateur d'énergie réactive et procédé d'équilibrage de tensions de demi-bus associé | |
| EP2510612A2 (fr) | Dispositif de commande d'une msap | |
| FR2988234A1 (fr) | Procede de charge sans contact d'une batterie d'un vehicule automobile electrique | |
| EP0658971A1 (fr) | Système de contrôle d'alimentation d'un moteur asynchrone | |
| FR3045240B1 (fr) | Procede de compensation des effets non-lineaires d'un onduleur de tension. | |
| FR3049788A1 (fr) | Procede de commande d'un moteur electrique asynchrone | |
| FR2893786A1 (fr) | Procede et appareil de commande pour limiter le courant d'un systeme de pilotage d'une machine a induction | |
| EP1070384B1 (fr) | Procede et dispositif de commande d'un convertisseur statique alimentant une source de courant | |
| WO2020069878A1 (fr) | Procédé de commande d'un convertisseur de type boost à n cellules de commutations | |
| EP1686682B1 (fr) | Procédé et système de limitation du courant en sortie d'un variateur de vitesse fonctionnant selon une loi de commande U/F. | |
| FR3009771A1 (fr) | Procede de commande d'une machine electrique synchrone a aimants permanents, et dispositif electronique de commande associe | |
| EP0992105B1 (fr) | Procede et dispositif de commande de commutateurs dans un systeme de commande a structure variable, a frequence controlable | |
| FR3004581A1 (fr) | Contacteur electrique et procede de pilotage d'une bobine electromagnetique dans un tel contacteur | |
| WO2023135374A1 (fr) | Dispositif et procédé de commande d'une machine synchrone et d'estimation de la position rotor, du démarrage à une faible vitesse prédéterminée | |
| EP3827512B1 (fr) | Syteme de generation d'energie electrique et procede de regulation d'un systeme de generation d'energie electrique pour un reseau de distribution electrique d'un aeronef | |
| FR3102899A1 (fr) | Procédé de commande électrique d’un onduleur à trois niveaux | |
| EP3711155B1 (fr) | Procédé de commande d'une machine électrique synchrone | |
| WO2025056859A1 (fr) | Système de contrôle du courant de court-circuit d'un réseau électrique | |
| Alamri et al. | Sliding mode observer-based MRAS for direct torque control of induction motor | |
| FR3161517A1 (fr) | Convertisseur triphasé, aéronef et procédé de commande associés | |
| FR2850221A1 (fr) | Dispositif de circuit et procede pour produire un signal a modulation d'impulsions en largeur | |
| FR3128837A1 (fr) | Système et procédé de calcul d’écart de couple entre au moins deux moteurs à induction asynchrones |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20180130 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20200226 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20211006 |
|
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: RENAULT S.A.S |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20220217 |