WO2019082825A1 - Dispositif de commande pour machine tournante électrique - Google Patents

Dispositif de commande pour machine tournante électrique

Info

Publication number
WO2019082825A1
WO2019082825A1 PCT/JP2018/039078 JP2018039078W WO2019082825A1 WO 2019082825 A1 WO2019082825 A1 WO 2019082825A1 JP 2018039078 W JP2018039078 W JP 2018039078W WO 2019082825 A1 WO2019082825 A1 WO 2019082825A1
Authority
WO
WIPO (PCT)
Prior art keywords
phase
arm switch
winding
upper arm
lower arm
Prior art date
Application number
PCT/JP2018/039078
Other languages
English (en)
Japanese (ja)
Inventor
満 柴沼
Original Assignee
株式会社デンソー
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to CN201880069028.7A priority Critical patent/CN111264027B/zh
Publication of WO2019082825A1 publication Critical patent/WO2019082825A1/fr

Links

Images

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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
    • H02P25/22—Multiple windings; Windings for more than three phases
    • 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
    • H02P6/14—Electronic commutators
    • H02P6/16—Circuit arrangements for detecting position
    • H02P6/18—Circuit arrangements for detecting position without separate position detecting elements

Definitions

  • the present disclosure relates to a control device of a rotating electrical machine.
  • control device As this kind of control device, as seen in Patent Document 1, there is known one that controls driving of a rotating electrical machine provided with one winding group.
  • the control device includes a current detection unit that detects a current flowing through a winding of the rotating electrical machine, and operates an inverter to apply a rectangular wave voltage to the winding of the rotating electrical machine based on a detection value of the current detection unit.
  • the present disclosure has as its main object to provide a control device of a rotating electrical machine that can suppress a decrease in detection accuracy of a current used for operating the inverter.
  • the present disclosure relates to a control device of a rotating electric machine applied to a control system including a rotating electric machine having a plurality of sets of multiphase windings wound around a stator, and an inverter for applying a voltage to each winding.
  • a current detection unit that detects a current flowing in a winding, and an operation unit that operates the inverter to apply a rectangular wave voltage to each of the winding groups based on a detection value of the current detection unit;
  • the detection unit detects a current flowing through the target winding in the detection period.
  • a detection period is a period in which the current flowing in the winding group not including the target winding, which is a winding whose current is to be detected, among the plurality of winding groups does not interfere with the current flowing in the target winding. ing.
  • the current detection unit detects the current flowing in the target winding. For this reason, the fall of detection accuracy of the current used for operation of an inverter can be controlled.
  • FIG. 1 is an entire configuration diagram of a control system of a rotating electrical machine according to a first embodiment
  • FIG. 2 is a diagram showing the spatial phase difference of the winding group
  • FIG. 3 is a block diagram showing processing of the control unit and the drive unit
  • FIG. 4 is a diagram showing 180 ° rectangular wave energization control
  • FIG. 5 is a diagram showing that current detection accuracy is reduced due to interference
  • FIG. 6 is a diagram showing the relationship between each voltage vector
  • FIG. 7 is a diagram showing a U-phase current detection period
  • FIG. 8 is a diagram showing a V-phase current detection period
  • FIG. 1 is an entire configuration diagram of a control system of a rotating electrical machine according to a first embodiment
  • FIG. 2 is a diagram showing the spatial phase difference of the winding group
  • FIG. 3 is a block diagram showing processing of the control unit and the drive unit
  • FIG. 4 is a diagram showing 180 ° rectangular wave energization control
  • FIG. 5 is a diagram showing that
  • FIG. 9 is a diagram showing a W-phase current detection period
  • FIG. 10 is a diagram showing current detection timing
  • FIG. 11 is a flowchart of current detection timing determination processing and correction value calculation processing.
  • FIG. 12 is a time chart showing the current amplitude difference of the U and V phases
  • FIG. 13 is an entire configuration diagram of a control system of a rotating electrical machine according to a second embodiment
  • FIG. 14 is a block diagram showing processing of the control unit and the first drive unit
  • FIG. 15 is a flowchart of current detection timing determination processing and correction value calculation processing.
  • the control system includes a rotating electrical machine 10.
  • the rotary electric machine 10 has a multiphase multiple winding, and specifically, is a synchronous machine having a three-phase double winding.
  • the rotary electric machine 10 is of the winding field type.
  • the rotor 11 of the rotary electric machine 10 is provided with a field winding 12 for forming a magnetic pole.
  • a field current flows through the field winding 12.
  • the function as a generator what is provided with the function as an electric motor is used as the rotary electric machine 10 in this embodiment.
  • the rotor 11 is made common to the first and second winding groups 14 and 15.
  • Each of the first winding group 14 and the second winding group 15 consists of star-connected three-phase windings.
  • the first winding group 14 has U, V, W phase windings 14U, 14V, 14W which are mutually shifted by 120 ° in electrical angle
  • the second winding group 15 is X which is mutually shifted by 120 ° in electrical angle
  • Y, Z phase windings 15X, 15Y, 15Z In the present embodiment, as shown in FIG.
  • the spatial phase difference ⁇ which is the angle between the first winding group 14 and the second winding group 15, is set to 30 ° in electrical angle. More specifically, X-phase winding 15X is advanced by 30 ° in electrical angle with respect to U-phase winding 14U.
  • the first winding group 14 and the second winding group 15 have the same configuration. Specifically, the number of turns of each of phase windings 14U to 14W constituting first winding group 14 and the number of turns of each phase windings 15X to 15Z constituting second winding group 15 are set equal. ing.
  • the control system includes a positive electrode side conductive member 20, a DC power supply 21, and a module MJ.
  • the positive electrode side conductive member 20 is, for example, a bus bar.
  • the direct current power supply 21 is, for example, a storage battery, more specifically, a secondary battery.
  • Module MJ is a series connection of X-phase upper and lower arm switches SXH and SXL, a series connection of Y-phase upper and lower arm switches SYH and SYL, a series connection of Z-phase upper and lower arm switches SZH and SZL, U A series connection of upper and lower arm switches SUH and SUL, a series connection of upper V-phase and lower arm switches SVH and SVL, a series connection of upper W-phase and lower arm switches SWH and SWL, and a drive unit DU ing.
  • each of the switches SXH to SWL is an N-channel MOSFET.
  • the drive unit DU is an application specific integrated circuit (ASIC).
  • the positive electrode terminal of the DC power supply 21 is connected to the positive electrode side conductive member 20.
  • the ground terminal is connected to the negative terminal of the DC power supply 21.
  • the positive electrode side conductive member 20 is connected to the drain which is the high potential side terminal of each upper arm switch SXH, SYH, SZH, SUH, SVH, SWH.
  • a ground is connected to a source which is a low potential side terminal of each of the lower arm switches SXL, SYL, SZL, SUL, SVL, and SWL.
  • a first end of an X-phase winding 15X is connected to a connection point between the X-phase upper and lower arm switches SXH and SXL via an X-phase conductive member 22X such as a bus bar.
  • the first end of the Y-phase winding 15Y is connected to the connection point of the Y-phase upper and lower arm switches SYH and SYL via a Y-phase conductive member 22Y such as a bus bar.
  • the first end of the Z-phase winding 15Z is connected to the connection point of the Z-phase upper and lower arm switches SZH and SZL via a Z-phase conductive member 22Z such as a bus bar.
  • the second ends of the X, Y, Z phase windings 15X, 15Y, 15Z are connected at a neutral point.
  • a first end of a U-phase winding 14U is connected to a connection point between the U-phase upper and lower arm switches SUH and SUL via a U-phase conductive member 22U such as a bus bar.
  • the first end of the V-phase winding 14V is connected to the connection point of the V-phase upper and lower arm switches SVH and SVL via a V-phase conductive member 22V such as a bus bar.
  • the first end of the W-phase winding 14W is connected to the connection point of the W-phase upper and lower arm switches SWH and SWL via a W-phase conductive member 22W such as a bus bar.
  • the second ends of the U, V, W phase windings 14U, 14V, 14W are connected at a neutral point.
  • the upper and lower arm switches of each phase and the positive electrode side conductive member 20 constitute an inverter.
  • the control system includes a control unit 30.
  • the control unit 30 includes a CPU and a memory, and the CPU executes a program stored in the memory.
  • the control unit 30 exchanges information with each of the drive units DU1 to DU3 in order to control the control amount of the rotary electric machine 10 to the command value.
  • the control amount is torque
  • the command value thereof is command torque Trq *.
  • the torque control according to the present embodiment is position sensorless control that does not use the detection value of an angle detector such as a resolver that directly detects an electrical angle. Further, in the present embodiment, in order to control the torque of the rotary electric machine 10 to the command torque Trq *, 180-degree rectangular wave energization control is used.
  • the drive unit DU corresponds to a control device of the rotary electric machine 10.
  • the functions provided by the drive unit DU and the control unit 30 can be provided, for example, by software recorded in a tangible memory device and a computer that executes the software, hardware, or a combination thereof.
  • Voltage command setting unit 31 has a voltage amplitude required to control the torque of rotating electrical machine 10 to command torque Trq * based on command torque Trq * and estimated angular velocity ⁇ est output from addition unit 47 described later.
  • Set Vamp and voltage phase ⁇ The voltage amplitude Vamp is the magnitude of a voltage vector applied to the winding of the rotating electrical machine 10.
  • the voltage phase is the angle between the voltage vector and the reference axis.
  • the reference axis is, for example, the d axis in the dq coordinate system.
  • the voltage amplitude Vamp and the voltage phase ⁇ may be set based on, for example, map information in which the voltage amplitude Vamp and the voltage phase ⁇ are defined in association with the command torque Trq * and the estimated angular velocity ⁇ est.
  • the first current detection unit 41 detects currents flowing in the U, V, W phase conductive members 22U, 22V, 22W as U, V, W phase currents IUr, IVr, IWr.
  • the second current detection unit 42 detects currents flowing through the X, Y, Z phase conductive members 22X, 22Y, 22Z as X, Y, Z phase currents IXr, IYr, IZr.
  • the phase difference calculation unit 43 is a phase difference between at least one phase current of the X, Y, Z phase currents IXr, IYr, IZr detected by the second current detection unit 42 and a phase voltage corresponding to the phase. Calculate ⁇ r.
  • the phase difference between the Z-phase current IXr and the phase voltage of the Z-phase is calculated.
  • the phase difference is calculated based on, for example, the zero cross timing of the phase current and the phase voltage.
  • the zero cross timing of the phase voltage of the Z phase may be calculated based on the Z phase drive signal GZ generated by the signal generation unit 50 described later.
  • the target phase difference setting unit 44 sets a target phase difference ⁇ * based on the voltage phase ⁇ set by the voltage command setting unit 31.
  • the target phase difference ⁇ * may be set based on, for example, map information in which the target phase difference ⁇ * is defined in association with the voltage phase ⁇ .
  • the phase deviation calculating unit 45 calculates the phase deviation ⁇ by subtracting the phase difference ⁇ r from the target phase difference ⁇ *.
  • the feedback control unit 46 calculates a basic angular velocity ⁇ c, which is a basic value of the electrical angular velocity of the rotary electric machine 10, as an operation amount for feedback control of the phase deviation ⁇ to zero.
  • a basic angular velocity ⁇ c which is a basic value of the electrical angular velocity of the rotary electric machine 10
  • proportional integral control is used as feedback control.
  • the adding unit 47 calculates an estimated angular velocity ⁇ est which is an estimated value of the electrical angular velocity by adding the initial value ⁇ 0 of the electrical angular velocity of the rotary electric machine 10 to the basic angular velocity ⁇ c.
  • the initial value ⁇ 0 may be calculated based on, for example, the induced voltage generated in each phase winding.
  • the integrator 48 integrates the estimated angular velocity ⁇ est in time to calculate an estimated electrical angle ⁇ est which is an estimated value of the electrical angle of the rotary electric machine 10.
  • the correction unit 49 calculates a corrected electric angle ⁇ f by subtracting a correction value ⁇ C calculated by a correction value calculation unit 51 described later from the estimated electric angle ⁇ est.
  • the signal generation unit 50 generates X, Y, W phase drive signals GX, GY, GZ, U, V, W phase drive signals GU, GV, based on the voltage amplitude Vamp, the voltage phase ⁇ and the corrected electrical angle ⁇ f. Generate GW and.
  • the X, Y, and Z phase drive signals GX, GY, and GZ turn on the X, Y, and Z phase upper arm switches SXH, SYH, and SZH by the theoretical value H, and lower the X, Y, and Z phases. It instructs to turn off the arm switches SXL, SYL and SZL.
  • the X, Y and Z phase drive signals GX, GY and GZ turn off the X, Y and Z phase upper arm switches SXH, SYH and SZH according to the theoretical value L, and the X, Y and Z phase lower arm switches SXL. , SYL and SZL are instructed to be turned on.
  • the U, V, W phase drive signals GU, GV, GW turn on the U, V, W phase upper arm switches SUH, SVH, SWH by the theoretical value H, and the U, V, W phase lower arm switches It instructs to turn off SUL, SVL and SWL.
  • the switches SXH, SXL, SYH, SYL, SZH, SZL, SUH, SUL, SVH, SVL, SWH, SWL are turned on or off in accordance with the generated drive signals GX, GY, GZ, GU, GV, GW.
  • the upper arm switch and the lower arm switch are alternately turned on with a dead time.
  • the signal generation unit 50 first generates X, Y, Z phase drive signals GX, GY, GZ as shown in FIG.
  • the X, Y, Z phase drive signals GX, GY, GZ consist of a period of logic H over an electrical angle range of 180 ° and a period of logic L over an electrical angle range of 180 °.
  • the switching timing from L to H is mutually shifted by 120 °.
  • the signal generation unit 50 delays the phases of the generated X, Y, Z phase drive signals GX, GY, GZ by the space phase difference ⁇ (30 °) to generate the U, V, W phase drive signals GU, GV, GW. Generate Specifically, the signal generation unit 50 delays the U-phase drive signal GU relative to the X-phase drive signal GX by the spatial phase difference ⁇ .
  • the phase difference calculation unit 43, the target phase difference setting unit 44, the phase deviation calculation unit 45, the feedback control unit 46, the addition unit 47, the integrator 48, the correction unit 49, and the signal generation unit 50 corresponds to Further, the phase difference calculation unit 43, the target phase difference setting unit 44, the phase deviation calculation unit 45, the feedback control unit 46, the addition unit 47, and the integrator 48 correspond to a position estimation unit.
  • the correction value calculation unit 51 calculates the correction value ⁇ C based on the U, V, W phase currents IUr, IVr, IWr detected by the first current detection unit 41.
  • the correction value ⁇ C is used to suppress a change in the rotational speed of the rotor 11.
  • the present embodiment is characterized in the detection timing of the current used to calculate the correction value ⁇ C. The current detection timing of the present embodiment will be described below after the problem regarding the current detection timing is described.
  • FIG. 5 shows the transition of U-phase current.
  • the waveform in the case of no interference shows the transition of the U-phase current when only the U, V, W phase among the U, V, W, X, Y, Z phases is energized, and in the case of interference
  • the waveform of (1) shows the transition of the U-phase current when all of the U, V, W, X, Y and Z phases are energized.
  • VU, VV, VW, VX, VY and VZ indicate U, V, W, X, Y and Z phase voltages
  • IU, IV, IW, IX, IY and IZ indicate U , V, W, X, Y, Z phase current
  • L indicates the self-inductance of each phase, and indicates the mutual inductance in the same winding group
  • m indicates the mutual inductance between the first and second winding groups 14 and 15.
  • eU, eV, eW, eX, eY and eZ indicate induced voltages of U, V, W, X, Y and Z phases.
  • the components in the first row and the fourth column and the components in the first row and the fifth column have the same absolute value and opposite sign.
  • This is, as shown in FIG. 6, in a relationship in which the U-phase component of the X-phase voltage vector VX and the U-phase component of the Y-phase voltage vector VY cancel each other. It shows that there is a relation in which m ⁇ dIX / dt and “ ⁇ m ⁇ dIY / dt” are offset.
  • the component in the second row and the fifth column and the component in the second row and the sixth column have the same absolute value and opposite sign. This is because, as shown in FIG. 6, the V-phase component of the Y-phase voltage vector VY and the V-phase component of the Z-phase voltage vector VZ are offset, and “m ⁇ dIY / dt” and “-m It shows that there is an offset relationship with x dIZ / dt.
  • V from the on timing te of the X phase lower arm switch SXL to the on timing tf of the U phase lower arm switch SUL appearing immediately after that timing V phase current from V phase first period and ON timing tg of X phase upper arm switch SXH to ON timing th of U phase upper arm switch SUH appearing immediately after the timing is V phase current It is considered as a detection period.
  • the target winding is the V-phase winding 14 V
  • the quadrature phase is the X phase.
  • the component in the third row and the fifth column is 0 in the 6 ⁇ 6 matrix of the above equation (eq1). This indicates that the W-phase current is not influenced by the time change of the Y-phase current because the W-phase voltage vector VW and the Y-phase voltage vector VY are orthogonal as shown in FIG. .
  • the component in the third row and the fourth column and the component in the third row and the sixth column have the same absolute value and opposite sign. This is because, as shown in FIG. 6, the W-phase component of the Z-phase voltage vector VZ and the W-phase component of the X-phase voltage vector VX are offset, and “-m ⁇ dIX / dt” and “m It shows that there is an offset relationship with x dIZ / dt.
  • W from the on-timing ti of the Y-phase lower arm switch SYL to the on-timing tj of the U-phase lower arm switch SUL appearing immediately after that timing The W phase current period from the on phase tk of the phase 1st period and the Y phase upper arm switch SYH to the on timing tm of the U phase upper arm switch SUH appearing immediately after that timing is the W phase current It is considered as a detection period.
  • the target winding is the W-phase winding 14W
  • the orthogonal phase is the Y-phase.
  • the on-timing ta of the Z-phase lower arm switch SZL and the on-timing tc of the Z-phase upper arm switch SZH are the first current detection unit 41. It is set to the detection timing of U phase current IUr by. Further, in the V-phase current detection period, the on-timing t of the X-phase lower arm switch SXL and the on-timing tg of the X-phase upper arm switch SXH are set to the detection timing of the V-phase current IVr by the first current detection unit 41. It is done.
  • the on timing ti of the Y phase lower arm switch SYL and the on timing tk of the Y phase upper arm switch SYH are set to the detection timing of the W phase current IWr by the first current detection unit 41. It is done.
  • U, V and W phase currents IUr, IVr and IWr are detected twice each in one cycle of the electrical angle.
  • FIG. 11 shows the procedure of the process of determining the current detection timing and the process of calculating the correction value ⁇ C according to the present embodiment. This process is repeatedly performed, for example, every predetermined processing cycle by cooperation of the second current detection unit 42 and the correction value calculation unit 51.
  • step S10 it is determined whether either the condition that the X-phase drive signal GX has switched from H to L or the condition that the X-phase drive signal GX has switched from L to H has been satisfied.
  • This process is a process for determining whether or not it is a detection timing of the V-phase current IVr.
  • step S10 When an affirmative determination is made in step S10, the process proceeds to step S11, and the V-phase current IVr is detected.
  • step S12 the absolute value of V-phase current IVr [n-1] detected in the previous time is subtracted from the absolute value of V-phase current IVr [n] detected in the current processing cycle to obtain V-phase current amplitude difference ⁇ IV.
  • FIG. 12 shows an example of how to calculate the V-phase current amplitude difference ⁇ IV.
  • 12 (a) shows the transition of U and V phase currents IUr and IVr
  • FIGS. 12 (b) and 12 (c) show the transition of X and Z phase drive signals GX and GZ.
  • FIG. 12 shows a state where the rotational speed of the rotor 11 is gradually rising.
  • the respective timings ta, tc, te and tg correspond to the respective timings ta, tc, te and tg shown in FIG.
  • a correction value ⁇ C is calculated based on the V-phase current amplitude difference ⁇ IV.
  • a correction value ⁇ C is calculated as an operation amount for feedback control of the V-phase current amplitude difference ⁇ IV to zero.
  • proportional integral control is used as feedback control.
  • the calculated correction value ⁇ C is output to the correction unit 49.
  • step S10 If a negative determination is made in step S10, the process proceeds to step S14, and either the condition that the Y phase drive signal GY has switched from H to L or the condition that the Y phase drive signal GY has switched from L to H is satisfied. It is determined whether it has been done.
  • This process is a process for determining whether or not it is the detection timing of the W-phase current IWr.
  • step S14 If an affirmative determination is made in step S14, the process proceeds to step S15, and the W-phase current IWr is detected.
  • step S16 the W-phase current amplitude difference ⁇ IW is obtained by subtracting the absolute value of the W-phase current IWr [n-1] detected last time from the absolute value of the W-phase current IWr [n] detected in the current processing cycle.
  • step S17 the correction value ⁇ C is calculated based on the W-phase current amplitude difference ⁇ IW.
  • a correction value ⁇ C is calculated as an operation amount for feedback control of the W-phase current amplitude difference ⁇ IW to zero.
  • proportional integral control is used as feedback control.
  • the calculated correction value ⁇ C is output to the correction unit 49.
  • step S14 If a negative determination is made in step S14, the process proceeds to step S18, and either the condition that the Z phase drive signal GZ has switched from H to L or the condition that the Z phase drive signal GZ has switched from L to H is satisfied. It is determined whether it has been done.
  • This process is a process for determining whether or not it is a detection timing of the U-phase current IUr.
  • step S18 When an affirmative determination is made in step S18, the process proceeds to step S19, and the U-phase current IUr is detected.
  • step S20 the difference between the U-phase current amplitudes ⁇ IU is obtained by subtracting the absolute value of the U-phase current IUr [n-1] detected last time from the absolute value of the U-phase current IUr [n] detected in the current processing cycle.
  • a correction value ⁇ C is calculated based on the U-phase current amplitude difference ⁇ IU.
  • a correction value ⁇ C is calculated as an operation amount for feedback control of the U-phase current amplitude difference ⁇ IU to zero.
  • proportional integral control is used as feedback control.
  • the calculated correction value ⁇ C is output to the correction unit 49. By the process described above, the correction value ⁇ C is calculated three times in one electrical angle cycle.
  • the processing of steps S12, S16, and S20 corresponds to the change amount calculation unit. Also, the processing of steps S13, S17, and S21 and the correction unit 49 correspond to a position correction unit.
  • the on timing ta of the Z phase lower arm switch SZL and the on timing tc of the Z phase upper arm switch SZH are set to the detection timing of the U phase current IUr.
  • the U-phase current IUr can be detected while avoiding a period in which a current interfering with the U-phase current IUr flows, and the detected U-phase current IUr is not subjected to low-pass filter processing for removing high frequency noise. It is possible to suppress a decrease in detection accuracy of U-phase current IUr. As a result, it is possible to suppress a decrease in torque controllability in position sensorless control.
  • the control system comprises first, second and third modules M1, M2 and M3.
  • the first module M1 includes a series connection of Z-phase upper and lower arm switches SZH and SZL, a series connection of U-phase upper and lower arm switches SUH and SUL, and a first drive unit DU1.
  • the first drive unit DU1 is an ASIC.
  • the first drive unit DU1 detects U and Z phase currents IUr and IZr flowing through the U and Z phase conductive members 22U and 22Z.
  • the second module M2 includes a series connection of X-phase upper and lower arm switches SXH and SXL, a series connection of V-phase upper and lower arm switches SVH and SVL, and a second drive unit DU2.
  • the second drive unit DU2 is an ASIC.
  • the second drive unit DU2 detects X and V phase currents IXr and IVr flowing through the X and V phase conductive members 22X and 22V.
  • the third module M3 includes a series connection of Y-phase upper and lower arm switches SYH and SYL, a series connection of W-phase upper and lower arm switches SWH and SWL, and a third drive unit DU3.
  • the third drive unit DU3 is an ASIC.
  • the third drive unit DU3 detects Y and W phase currents IYr and IWr flowing through the Y and W phase conductive members 22Y and 22W.
  • each of the drive units DU1 to DU3 and the control unit 30 can be provided by, for example, software recorded in a substantial memory device and a computer that executes the software, hardware, or a combination thereof. .
  • FIG. 14 shows a functional block diagram of processing of the first drive unit DU1.
  • the same components as or the corresponding components to those shown in FIG. 3 are denoted by the same reference numerals for the sake of convenience.
  • the first current detection unit 41 detects the U-phase current IUr, and the second current detection unit 42 detects the Z-phase current IZr.
  • the signal generation unit 50 generates U and Z phase drive signals GU and GZ.
  • the first current detection unit 41 detects the V-phase current IVr, and the second current detection unit 42 detects the X-phase current IXr.
  • the signal generation unit 50 generates the V, X-phase drive signals GV, GX.
  • the first current detection unit 41 detects the W-phase current Iwr, and the second current detection unit 42 detects the Y-phase current IYr.
  • the signal generator 50 generates W, Y phase drive signals GW, GY.
  • FIG. 15 shows the procedure of the process of determining the current detection timing and the process of calculating the correction value ⁇ C according to the present embodiment. This process is repeatedly performed, for example, every predetermined processing cycle by cooperation of the second current detection unit 42 and the correction value calculation unit 51 of the first drive unit DU1.
  • the same processes as the configuration shown in FIG. 11 are given the same reference numerals for the sake of convenience.
  • step S18 when an affirmative determination is made in step S18, the process proceeds to step S19. Thereafter, the processes of steps S20 and S21 are performed.
  • the second current detection unit 42 and the correction value calculation unit 51 of the second drive unit DU2 perform the processes of steps S10 to S13 in FIG. Further, the second current detection unit 42 and the correction value calculation unit 51 of the third drive unit DU3 perform the processes of steps S14 to S17 of FIG.
  • the calculation process of the estimated electrical angle ⁇ est and the correction value ⁇ C can be completed in each of the modules M1 to M3. Therefore, the number of signal lines for exchanging information among the modules M1 to M3 can be reduced.
  • the detection timing of the U-phase current IUr is not limited to the timings ta and tc shown in FIGS. 7 and 10.
  • the detection timing of U-phase current IUr may be set to either timing ta or tc.
  • the difference between the detected U-phase current IUr and the W-phase current IWr detected immediately after that may be calculated as the current amplitude difference.
  • the detection timing of the U-phase current IUr is not limited to the switch switching timing, but may be any timing in the U-phase current detection period.
  • the detection timing of the V-phase current IVr is not limited to the timings te and tg shown in FIGS. 8 and 10.
  • the detection timing of the V-phase current IVr may be set to either the timing te or tg.
  • the detection timing of the V-phase current IVr is not limited to the switch switching timing, but may be any timing in the V-phase current detection period.
  • the detection timing of the W-phase current IWr is not limited to the timings ti and tk shown in FIG. 9 and FIG.
  • the detection timing of the W-phase current IWr may be set to either timing ti or tk.
  • the detection timing of the W-phase current IWr is not limited to the switch switching timing, but may be any timing in the W-phase current detection period.
  • the correction value ⁇ C is calculated based on the U, V, and W phase currents, but the present invention is not limited to this. Even if the correction value ⁇ C is calculated based on the X, Y, and Z phase currents Good.
  • the phase difference calculation unit 43 uses the detection value of the first current detection unit 41
  • the correction value calculation unit 51 uses the detection value of the second current detection unit 42. Just do it.
  • the detection timing of the X, Y, Z phase current used to calculate the correction value ⁇ C may be set in the same manner as the detection timing of the U, V, W phase current described above.
  • the current amplitude difference may be calculated based on detected values of three or more phase currents. For example, the difference between the phase current detected in the previous processing cycle and the phase current detected in the last two processing cycles is calculated as the previous current amplitude difference. Then, the difference between the phase current detected in the current processing cycle and the phase current detected in the previous processing cycle is calculated as the current amplitude difference. Then, the final current amplitude difference used in steps S13, S17 and S21 is calculated as the average value of the current current amplitude difference and the previous current amplitude difference.
  • the torque control of the rotating electrical machine is not limited to the one using position sensorless control, but the detection value of the angle detector may be used.
  • the main body of the process of determining the current detection timing and the process of calculating the correction value is not limited to the drive units DU and DU1 to DU3, and may be the control unit 30, for example.
  • the control amount of the rotating electrical machine is not limited to the torque, and may be, for example, a rotational speed.
  • the upper and lower arm switches constituting the inverter are not limited to N-channel MOSFETs, and may be IGBTs, for example.
  • the rotating electrical machine is not limited to one having a spatial phase difference ⁇ of 30 °, but may have a spatial phase difference ⁇ having a value slightly different from 30 °. Even in this case, it is possible to suppress a decrease in current detection accuracy.
  • the rotating electric machine is not limited to the one having two winding groups, and may have three or more winding groups. Further, the rotating electrical machine is not limited to the winding field type, and may be, for example, a permanent magnet field type in which a permanent magnet is provided on the rotor. The rotating electrical machine is not limited to three-phase ones, and may be multi-phase ones other than three phases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

Ce dispositif de commande (DU, DU1-DU3) pour une machine tournante électrique est appliqué à un système de commande comprenant : une machine tournante électrique (10) ayant une pluralité d'ensembles (14, 15) de fils d'enroulement polyphasés enroulés autour d'un stator (13) ; et des onduleurs (SXH-SWL, 20) qui appliquent une tension à chaque fil d'enroulement. Le dispositif de commande comprend : une unité de détection de courant (42) qui détecte des courants circulant à travers les fils d'enroulement ; et des unités d'actionnement (4350) qui actionnent les onduleurs pour appliquer une tension rectangulaire à chaque groupe de fils d'enroulement sur la base d'une valeur de détection de l'unité de détection de courant. L'unité de détection de courant détecte le courant circulant à travers un fil d'enroulement cible pendant une période de détection, si la période de détection est désignée comme période pendant laquelle le courant circulant à travers un groupe de fils d'enroulement n'interfère pas avec le courant circulant à travers le fil d'enroulement cible, le groupe de fils d'enroulement étant parmi la pluralité de groupes de fils d'enroulement et ne comprenant pas le fil d'enroulement cible pour lequel un courant circulant à travers celui-ci doit être détecté.
PCT/JP2018/039078 2017-10-24 2018-10-19 Dispositif de commande pour machine tournante électrique WO2019082825A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880069028.7A CN111264027B (zh) 2017-10-24 2018-10-19 旋转电机的控制装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017205452A JP6958230B2 (ja) 2017-10-24 2017-10-24 回転電機の制御装置
JP2017-205452 2017-10-24

Publications (1)

Publication Number Publication Date
WO2019082825A1 true WO2019082825A1 (fr) 2019-05-02

Family

ID=66246552

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/039078 WO2019082825A1 (fr) 2017-10-24 2018-10-19 Dispositif de commande pour machine tournante électrique

Country Status (3)

Country Link
JP (1) JP6958230B2 (fr)
CN (1) CN111264027B (fr)
WO (1) WO2019082825A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04325893A (ja) * 1991-04-24 1992-11-16 Hitachi Ltd 交流電動機制御装置
JP2007151366A (ja) * 2005-11-30 2007-06-14 Hitachi Ltd モータ駆動装置及びそれを用いた自動車
JP2017163786A (ja) * 2016-03-11 2017-09-14 株式会社東芝 モータ駆動システム及び洗濯機

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011072145A (ja) * 2009-09-28 2011-04-07 Toshiba Corp モータドライブシステム
CN102668368B (zh) * 2009-12-28 2014-12-24 三菱电机株式会社 电动车辆的功率转换装置
EP3176943B1 (fr) * 2014-09-04 2019-10-30 Nsk Ltd. Dispositif de commande de moteur, procédé de détection de défaillance, dispositif de direction assistée électrique équipé de celui-ci, et véhicule
JP6358103B2 (ja) * 2015-01-14 2018-07-18 株式会社デンソー 多重巻線回転電機の制御装置
US9923504B2 (en) * 2015-01-21 2018-03-20 Mitsubishi Electric Corporation Control device for AC rotary machine and control device for electric power steering
JP2017131045A (ja) * 2016-01-21 2017-07-27 株式会社デンソー 回転電機制御装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04325893A (ja) * 1991-04-24 1992-11-16 Hitachi Ltd 交流電動機制御装置
JP2007151366A (ja) * 2005-11-30 2007-06-14 Hitachi Ltd モータ駆動装置及びそれを用いた自動車
JP2017163786A (ja) * 2016-03-11 2017-09-14 株式会社東芝 モータ駆動システム及び洗濯機

Also Published As

Publication number Publication date
JP2019080427A (ja) 2019-05-23
JP6958230B2 (ja) 2021-11-02
CN111264027B (zh) 2023-09-15
CN111264027A (zh) 2020-06-09

Similar Documents

Publication Publication Date Title
US8390223B2 (en) Control device for electric motor drive device
US8232753B2 (en) Control device for electric motor drive apparatus
JP5502126B2 (ja) 多重巻線回転機の駆動装置
CN108156837B (zh) 交流旋转电机的控制装置及电动助力转向装置
WO2019008676A1 (fr) Dispositif onduleur et dispositif de direction assistée électrique
JP6390489B2 (ja) インバータの制御装置
JP2017038442A (ja) 交流回転電機の制御装置
JP6685452B1 (ja) 回転電機の制御装置
JP6424773B2 (ja) 交流回転電機の制御装置
WO2017030055A1 (fr) Dispositif et procédé de commande de machine tournante
WO2019150984A1 (fr) Dispositif de commande pour moteur électrique synchrone triphasé
JP6958230B2 (ja) 回転電機の制御装置
US11228271B2 (en) Control device for three-phase synchronous motor and electric power steering device using the same
JP7062084B2 (ja) 交流回転電機の制御装置
US9935575B2 (en) Power conversion device and control method for same, and electric power steering control device
JP4604760B2 (ja) 交流電動機駆動システム
JP2017038444A (ja) 交流回転電機の制御装置
JP7294982B2 (ja) 電動機制御装置
JP6361540B2 (ja) 回転電機の制御装置
WO2024095475A1 (fr) Procédé de commande de moteur et dispositif de commande de moteur
JP2022023411A (ja) インバータの制御装置
JP2023123084A (ja) 回転電機の制御装置、及びプログラム
JP2018113753A (ja) 交流電動機の制御装置
JP2015177705A (ja) 電動機の制御装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18869586

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18869586

Country of ref document: EP

Kind code of ref document: A1