WO2011152558A1 - 同期機の位置センサレス制御装置 - Google Patents
同期機の位置センサレス制御装置 Download PDFInfo
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- WO2011152558A1 WO2011152558A1 PCT/JP2011/062920 JP2011062920W WO2011152558A1 WO 2011152558 A1 WO2011152558 A1 WO 2011152558A1 JP 2011062920 W JP2011062920 W JP 2011062920W WO 2011152558 A1 WO2011152558 A1 WO 2011152558A1
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- 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
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- 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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
- H02P21/18—Estimation of position or speed
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- 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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
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- 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
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- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/032—Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
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- 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
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/03—Double rotor motors or generators, i.e. electromagnetic transmissions having double rotor with motor and generator functions, e.g. for electrical variable transmission
Definitions
- the present invention relates to a control device for a synchronous machine using a permanent magnet as a field source, and in particular, position sensorless control for controlling torque and speed by estimating a magnetic pole phase from voltage and current information of a synchronous machine having a multiple winding configuration. Relates to the device.
- ⁇ Variable speed control which controls torque and speed by combining a position sensor and an inverter, is applied to a synchronous machine using a permanent magnet as a field.
- control the torque and speed by estimating the magnetic pole phase (rotation phase of the field magnetic pole) from the voltage and current information of the synchronous machine.
- position sensorless control method There is a position sensorless control method.
- Non-Patent Document 1 Non-Patent Document 1
- FIG. 4 shows a control block diagram proposed in Document 1, and this block diagram is composed of the following elements.
- the speed controller 1 (Velocity Controller) 1 calculates a current command corresponding to a motor torque command by calculating a deviation between the speed command ⁇ * re and the estimated speed ⁇ ⁇ re output from the speed estimator 10 by proportional integration (PI). i * is output.
- the current controller 2 (Current Controller) 2 calculates the deviation between the current command i * output from the speed controller 1 and the current detection signal i output from the output current detector 6 of the inverter 4 by an operation such as proportional integration. A voltage command v * corresponding to the motor torque command is output.
- the two-phase / three-phase AC coordinate conversion unit ( ⁇ - ⁇ / uvw) 3 performs three-way conversion by rotating coordinate conversion and two-phase / three-phase conversion in which the voltage command output from the current control unit 2 is synchronized with the rotation phase of the field. This is converted into a phase AC voltage command, and a voltage command is given to the inverter 4.
- the estimated phase ⁇ ⁇ re which is the output of the phase estimation unit 9, is used as the reference phase for the rotation coordinate transformation.
- the inverter 4 is amplified to a voltage equivalent to the voltage command using pulse width modulation (PWM) control or the like and supplied to the motor.
- PWM pulse width modulation
- a motor 5 as a permanent magnet synchronous motor (IPMSM) is a synchronous motor driven by an inverter 4 at a variable speed.
- IPMSM permanent magnet synchronous motor
- the current detector (i detection) 6 detects a current flowing from the inverter 4 to the motor 5 and outputs a current detection signal i.
- the three-phase AC / two-phase coordinate converter ( ⁇ - ⁇ / uvw) 7 has a three-phase / two-phase conversion function for converting the current detection component of the three-phase AC into a biaxial component and a current synchronized with the rotational phase of the field. It is a coordinate converter which has the rotation coordinate conversion function converted into a component.
- the estimated phase ⁇ ⁇ re which is the output of the phase estimation unit 9, is used as the reference phase for the rotation coordinate transformation.
- a disturbance observer 8 estimates the expansion induced voltage e ⁇ of the motor 5.
- FIG. 5 shows a calculation block diagram of the disturbance observer 8. The inside of the wavy line is the actual motor unit.
- the disturbance observer 8 receives the voltage v inputted to the motor and the detected component of the flowing current i as inputs, and the motor circuit constant ( R, Ld, Lq), the estimated angular velocity ⁇ ⁇ re, and the low-pass filter (Filter) are used to estimate the extended induced voltage e ⁇ .
- This extended induced voltage has a characteristic that it has the same load angle although the amplitude component is different from the no-load induced electromotive force component caused by the magnetic flux generated by the permanent magnet.
- the phase estimation unit 9 estimates the rotor phase of the motor 5 from the expansion induced voltage e ⁇ of the motor 5.
- FIG. 6 shows a calculation block diagram of the phase estimation unit 9. Although the description of the function of extracting the phase ⁇ re from the biaxial component of the extended induced voltage e ⁇ estimated by the disturbance observer 8 is omitted in the input unit of FIG. 6, this phase calculation is actually used. Then, an error phase ⁇ re between the phase ⁇ re of the extended induced voltage e ⁇ and the phase information ⁇ ⁇ re used for the coordinate transformation of the three-phase AC / two-phase coordinate transformation unit 7 is calculated, and is further calculated as P (s ) And a quadratic function of K (s), and a new estimated phase ⁇ ⁇ re is output.
- a velocity estimation unit (Velocity Estimation) 10 time-differentiates the phase estimation result of the phase estimation unit 9 and outputs an estimated velocity ⁇ ⁇ re .
- phase estimation unit 4 is a simplified block diagram because the phase estimation unit and the speed estimation unit are complicated. This is a modified version of the phase and velocity estimation parts, and the names and notations are different, but 1 to 9 have the same functions as in FIG. Below, only the part which is different compared with FIG. 4 is demonstrated.
- the tan ⁇ 1 function calculation unit 11 calculates the phase of the estimated e ⁇ of the expansion induced voltage, regards this as a phase that is delayed by 90 ° with respect to the rotation direction as the estimated magnetic flux axis, and sets this phase as the phase angle ⁇ ⁇ e0. Output. This has the same meaning as the phase difference ( ⁇ re ⁇ ⁇ re ) in FIG.
- the speed estimation unit 12 considers that the phase angle ⁇ ⁇ e0 is generated due to an error between the actual speed and the estimated speed, and corrects the estimated speed ⁇ ⁇ re by performing proportional integral control on this phase angle.
- the position integration unit 13 integrates the corrected estimated speed ⁇ ⁇ re to generate a reference phase ⁇ ⁇ ( ⁇ re in FIG. 4) for rotational coordinate conversion.
- this reference phase ⁇ ⁇ coincides with the field phase of the actual machine, the phase angle ⁇ ⁇ e0 converges to zero.
- the current command conversion unit 14 applies the rotational coordinate conversion to the current control system, so that the torque command T * from the speed control unit 1 and the current command on the dq axis from the field command ⁇ * (or angular frequency ⁇ ). Convert to i * ( id * , iq * ).
- the magnetic pole phase is estimated from the voltage and current information of the inverter, but the magnetic pole phase may not match. As it is, each will estimate a different phase. However, the actual machine has one rotor and only one actual rotational phase. Therefore, how to integrate the position information estimated by calculation from individual voltage and current information in a plurality of inverters into one becomes a problem.
- the voltage and current imbalance factors include mechanical unbalance factors such as machining and assembly errors of the iron core and the eccentricity of the rotor shaft, and electrical imbalances such as adjustment errors of the current detection sensor. Factors are considered. Since these are factors that cannot be avoided in manufacturing, a function for integrating the phase estimation information of each inverter into one is necessary as a countermeasure to cope with even a certain difference.
- An object of the present invention is to provide unbalanced voltage and current information from multiple windings in position sensorless control in which a synchronous machine having a multiple winding configuration is driven by a plurality of inverters and a magnetic pole phase is estimated by an observer. Even in this case, the phase estimation information of each inverter can be integrated into one, and a position sensorless control device that can simplify control element commonization and control information communication in this integration processing is provided.
- the present invention drives one winding of a synchronous machine having a multi-winding configuration by a master inverter, and drives the remaining windings by respective slave inverters.
- a configuration that calculates the estimated speed ⁇ ⁇ re from the average value of these estimated phase angles a configuration that calculates an estimated phase that is time-integrated from the average value of the estimated speed, and an average value of the estimated phase that is time-integrated from the estimated speed It is configured to calculate the reference phase ⁇ ⁇ , and the average speed and reference phase calculation are transmitted between the master inverter and slave inverter with estimated speed or estimated phase and reference phase.
- the following apparatus is characterized.
- the master inverter is configured to supply a driving current to one winding of a synchronous machine having a multi-winding configuration by converting a voltage command synchronized with the rotational phase of the field into a multi-phase alternating current and converting the power to a multi-phase AC.
- each slave inverter also supplies a drive current to the other windings of the synchronous machine of the multi-winding configuration by reversely converting the voltage command synchronized with the rotational phase of the field into multi-phase alternating current and power amplification.
- Each of the master inverter and each slave inverter includes means for applying a reverse rotation coordinate conversion obtained by converting a voltage command into an alternating current and a reverse phase rotation coordinate conversion to convert the current component in synchronization with the rotation phase of the field, Means for calculating an estimated phase angle of ⁇ a voltage component including phase information of a speed electromotive force generated by a field magnetic flux '' from a voltage command of each winding, a current detection signal of each winding, a circuit constant of the synchronous machine, and an estimated speed,
- a position sensorless control device for a synchronous machine provided with phase estimation means that uses an estimated reference phase ⁇ ⁇ obtained based on the estimated phase angle as the rotational phase, And the estimated phase angle [Delta] [phi ⁇ e1 master inverter is calculated, and the average computing means for slave inverter to average the estimated phase angle [Delta] [phi ⁇ e2 computed, estimated speed operation for obtaining an estimated velocity omega ⁇ re from the averaged estimated
- the master inverter is configured to supply a drive current to one winding of a synchronous machine having a multi-winding configuration by performing reverse rotation coordinate conversion and power amplification of a voltage command synchronized with the rotation phase of the field into multi-phase AC.
- each slave inverter also supplies a drive current to the other windings of the synchronous machine of the multi-winding configuration by reversely converting the voltage command synchronized with the rotational phase of the field into multi-phase alternating current and power amplification.
- Each of the master inverter and each slave inverter includes means for applying a reverse rotation coordinate conversion obtained by converting a voltage command into an alternating current and a reverse phase rotation coordinate conversion to convert the current component in synchronization with the rotation phase of the field, Means for calculating an estimated phase angle of ⁇ a voltage component including phase information of a speed electromotive force generated by a field magnetic flux '' from a voltage command of each winding, a current detection signal of each winding, a circuit constant of the synchronous machine, and an estimated speed,
- a position sensorless control device for a synchronous machine provided with phase estimation means that uses an estimated reference phase ⁇ ⁇ obtained based on the estimated phase angle as the rotational phase
- An estimated speed calculating means for obtaining an estimated speed ⁇ ⁇ 1 from the estimated phase angle ⁇ ⁇ e1 calculated by the master inverter; an estimated speed calculating means for determining an estimated speed ⁇ ⁇ 2 from the estimated phase angle ⁇ ⁇ e2 calculated by the slave inverter; Average
- the master inverter is configured to supply a drive current to one winding of a synchronous machine having a multi-winding configuration by converting a voltage command synchronized with the rotational phase of the field into a multi-phase alternating current and reversely rotating coordinate conversion and power amplification.
- each slave inverter also supplies a drive current to the other windings of the synchronous machine of the multi-winding configuration by reversely converting the voltage command synchronized with the rotational phase of the field into multi-phase alternating current and power amplification.
- Each of the master inverter and each slave inverter includes means for applying a reverse rotation coordinate conversion obtained by converting a voltage command into an alternating current and a reverse phase rotation coordinate conversion to convert the current component in synchronization with the rotation phase of the field, Means for calculating an estimated phase angle of ⁇ a voltage component including phase information of a speed electromotive force generated by a field magnetic flux '' from a voltage command of each winding, a current detection signal of each winding, a circuit constant of the synchronous machine, and an estimated speed,
- a position sensorless control device for a synchronous machine provided with phase estimation means that uses an estimated reference phase ⁇ ⁇ obtained based on the estimated phase angle as the rotational phase
- Estimated speed calculating means for obtaining an estimated velocity omega ⁇ re1 from the estimated phase angle [Delta] [phi ⁇ e1 master inverter is calculated, and the integral calculation means for obtaining an estimated phase theta ⁇ 1 by integrating the estimated speed omega ⁇ re1, the slave in
- phase estimation means is provided in the master inverter, the slave inverter is provided with means for transmitting the calculated estimated phase angle or estimated speed or estimated phase to the master inverter, and the master inverter shares the calculated estimated reference phase. Means is provided for transmitting each slave inverter as data.
- one winding of a synchronous machine having a multiple winding configuration is driven by a master inverter, and the remaining windings are respectively driven by slave inverters.
- the existing control system can be used for the master inverter and slave inverter, and the same control calculation software and control gain are used when compared with the case of driving with a single inverter and the case of driving with multiple inverters. Yes, many parts can be shared.
- the transmission data between the inverters is only ⁇ ⁇ e2 from the slave inverter and the estimated reference phase ⁇ ⁇ from the master inverter, and is expressed by two-axis components or three-phase components such as current and voltage components. Compared with the case of transmitting what is to be transmitted, since these phase data are scalar values, the amount of communication data can be greatly reduced compared to the transmission of voltage or current.
- FIG. 1 is a control block diagram of a position sensorless control device for a synchronous machine in Embodiment 1.
- FIG. The control block diagram of the position sensorless control apparatus of the synchronous machine in Embodiment 2.
- FIG. The control block diagram of the position sensorless control apparatus of the synchronous machine in Embodiment 3.
- FIG. The control block diagram of the conventional position sensorless control apparatus.
- FIG. 5 is a calculation block diagram of a disturbance observer in FIG. 4.
- FIG. 5 is a calculation block diagram of the phase estimation unit 9 in FIG.
- FIG. 1 is a control block diagram of a position sensorless control device for a synchronous machine according to the present embodiment, in which a double-winding synchronous machine 5 is individually driven for each winding by two inverters 4 and 4a.
- Circuit elements 1 to 8 and 11 to 14 in FIG. 1 are the same as those in FIG. 7, and a portion corresponding to FIG. 7 will be described.
- a field control is performed by a speed control system and a current control system to which rotational coordinate transformation is applied.
- Voltage command v 1 * of coordinates synchronized with the rotation phase of the output voltage is obtained, and the voltage command v * uvw1 obtained by inversely rotating the voltage command to multi-phase alternating current based on the estimated reference phase ⁇ ⁇ is obtained, and further PWM modulation control is performed.
- the current of one winding of the synchronous machine 5 is controlled by amplifying the power by the inverter 4 by means of the above.
- the disturbance observer 8 and the tan ⁇ 1 function calculation unit 11 etc. determine the “field magnetic flux” from the voltage command v 1 * on the inverter rotation coordinate, the current detection signal i 1 , the circuit constant of the synchronous machine, and the estimated speed ⁇ ⁇ re.
- the phase angle ⁇ ⁇ e1 of “the voltage component including the phase information of the speed electromotive force generated by” is obtained, the estimated speed ⁇ ⁇ re is corrected using the phase angle, and the corrected estimated speed is used as the position integration unit 13
- the position sensorless control is made possible by integrating the time to generate the estimated reference phase ⁇ ⁇ .
- the double winding synchronous machine 5 is expanded to a device configuration in which each inverter is individually driven by two inverters, and the circuit elements 1 to 8 and 11 to 14 in FIG. 1 are used.
- the configuration is a master inverter, and the configuration by the circuit elements 2a to 4a, 6a to 8a, and 11a corresponding to the circuit elements 2 to 4, 6 to 8, and 11 of the master inverter is added to form a slave inverter.
- the current control of the other winding of the synchronous machine 5 is performed as a current command i * common to the master inverter, the expansion induced voltage is estimated by the disturbance observer 8a, and the expansion induced voltage by the tan ⁇ 1 function calculation unit 11a. Find the phase angle ⁇ ⁇ e2 .
- the estimated phase angle ⁇ ⁇ e2 calculated by the slave inverter is transmitted to the master inverter, and conversely, the estimated phase ⁇ ⁇ determined by the master inverter is transmitted to the slave inverter as common data.
- the estimated phase angle ⁇ ⁇ e2 transmitted from the slave inverter and the estimated phase angle ⁇ ⁇ e1 calculated by itself are averaged by the phase angle average calculating unit 20, and speed estimation is performed using this average phase information.
- the unit 12 performs speed estimation, and this estimated speed is set as a common estimated angular speed ⁇ ⁇ re of both inverters, and the position integrating unit 13 integrates to obtain a common estimated reference phase ⁇ ⁇ of both inverters.
- This estimated reference phase ⁇ ⁇ is transferred to the next stage internally in the master inverter, and the next stage processing is similarly performed by transmission to the slave inverter.
- the master inverter and the slave inverter are integrated into one by averaging the phase estimation information of both inverters.
- control elements and communication of control information can be simplified.
- the existing control system can be diverted, and the same control calculation software and control gain can be used when compared with the case of driving with a single inverter and the case of driving with multiple inverters.
- the transmission data between the inverters is only two pieces of phase angle ⁇ ⁇ e2 and reference phase ⁇ ⁇ , and these data are scalar values. Therefore, generally, the current and voltage components are two-axis components or three-phase components. The amount of communication data can be greatly reduced as compared with the case where the data is transmitted.
- FIG. 1 shows an example of a double-winding synchronous machine, it can be easily expanded by increasing the number of phases to be averaged even for a synchronous machine having a large number of multiplexes.
- FIG. 2 is a control block diagram of the position sensorless control device for the synchronous machine in the present embodiment. Compared to the first embodiment, the estimated phase angle ⁇ ⁇ e1 and the estimated phase angle ⁇ ⁇ e2 acquired from two inverters are shown in FIG. Instead, the estimated speeds ⁇ ⁇ 1 and ⁇ ⁇ 2 are changed.
- the master inverter and the slave inverter are provided with speed estimation units 12 and 12a for estimating the speed from changes in the estimated phase angle ⁇ ⁇ e1 and the estimated phase angle ⁇ ⁇ e2 , respectively.
- the “estimated speeds ⁇ ⁇ 1 , ⁇ ⁇ 2 ” from the estimators 12 , 12 a are averaged, and the average estimated speed is set as a common estimated angular speed ⁇ ⁇ re for both inverters.
- the common estimated reference phase ⁇ ⁇ of the inverters This estimated reference phase ⁇ ⁇ is transferred internally in the master inverter and transmitted to the slave inverter.
- the master inverter and the slave inverter have a difference in the phase angle of the extended induced voltage estimated from different voltages and current information from the multiple windings.
- the phase estimation information By integrating the phase estimation information, it can be integrated into one, and by applying the rotation coordinate transformation by this integrated processing estimated reference phase ⁇ ⁇ , after the speed estimation, it is operated as if it were one inverter.
- Position sensorless control of the synchronous machine 5 with multiple windings can be performed. Further, it is possible to simplify the sharing of control elements and the communication of control information in the integration process.
- the speed estimators 12 and 12a obtain the estimated speed ⁇ ⁇ re by performing proportional integral control on the phase angle ⁇ ⁇ e1 and the phase angle ⁇ ⁇ e2 , respectively.
- the integrated value gradually becomes a big difference with the passage of time.
- this estimated speed is actually used for the calculation of the expansion induced voltage of the magnetic flux observer as shown in FIG. 5, feedback via this is applied, so the estimated speed is actually between the two inverters. Is suppressed to a certain degree and does not cause an abnormal speed difference.
- FIG. 2 shows an example of a double-winding synchronous machine, but it can be easily expanded by increasing the number of phases to be averaged even for a synchronous machine having a large multiplex number.
- FIG. 3 is a control block diagram of the position sensorless control apparatus for a synchronous machine in the present embodiment.
- the estimated phase ⁇ ⁇ 1 instead of the estimated speed ⁇ ⁇ re obtained from two inverters. , ⁇ ⁇ 2 is changed.
- the master inverter and the slave inverter are provided with position integration units 13 and 13a for estimating the reference phase (reference position) by the integration calculation of the estimated speeds from the speed estimation units 12 and 12a, respectively, and the phase average calculation unit 22 averages the estimated phases ⁇ ⁇ 1 and ⁇ ⁇ 2 from the position integrators 13 and 13a, and sets the average estimated phase as an average estimated reference phase ⁇ ⁇ common to both inverters.
- the differentiation calculation unit 23 obtains the estimated speed ⁇ ⁇ re ′ by differentiating the average estimated reference phase ⁇ ⁇ .
- the master inverter and the slave inverter have a difference in the phase angle of the extended induced voltage estimated from different voltages and current information from the multiple windings.
- the phase estimation information of the inverters can be integrated into one, and by applying the rotation coordinate transformation based on the estimated estimation reference phase ⁇ ⁇ that has been integrated, the phase estimation is as if it were one inverter.
- the position sensorless control of the multiple winding synchronous machine 5 can be performed. Further, it is possible to simplify the sharing of control elements and the communication of control information in the integration process.
- FIG. 2 shows an example of a double-winding synchronous machine, but it can be easily expanded by increasing the number of phases to be averaged even for a synchronous machine having a large multiplex number.
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Abstract
Description
前記マスターインバータと各スレーブインバータは、電圧指令を交流に変換した逆回転座標変換と逆位相の回転座標変換を適用して界磁の回転位相と同期した電流成分に変換する手段と、回転座標上の電圧指令と各巻線の電流検出信号および同期機の回路定数と推定速度から「界磁磁束によって発生する速度起電力の位相情報を含む電圧成分など」の推定位相角を演算する手段を備え、
前記推定位相角を基にして求める推定基準位相θ^を前記回転位相として使用する位相推定手段を備えた同期機の位置センサレス制御装置において、
マスターインバータが演算した推定位相角Δφ^e1と、スレーブインバータが演算した推定位相角Δφ^e2とを平均する平均演算手段と、この平均した推定位相角から推定速度ω^reを求める推定速度演算手段と、この推定速度を積分して前記基準推定位相θ^を求める積分演算手段と、これをマスターインバータとスレーブインバータの共通した界磁の回転位相とする手段とを備えたことを特徴とする。
前記マスターインバータと各スレーブインバータは、電圧指令を交流に変換した逆回転座標変換と逆位相の回転座標変換を適用して界磁の回転位相と同期した電流成分に変換する手段と、回転座標上の電圧指令と各巻線の電流検出信号および同期機の回路定数と推定速度から「界磁磁束によって発生する速度起電力の位相情報を含む電圧成分など」の推定位相角を演算する手段を備え、
前記推定位相角を基にして求める推定基準位相θ^を前記回転位相として使用する位相推定手段を備えた同期機の位置センサレス制御装置において、
マスターインバータが演算した推定位相角Δφ^e1から推定速度ω^1を求める推定速度演算手段と、スレーブインバータが演算した推定位相角Δφ^e2から推定速度ω^2を求める推定速度演算手段と、前記推定速度ω^1と推定速度ω^2を平均する平均演算手段と、この平均した推定速度ω^reを積分して前記基準推定位相θ^を求める積分演算手段と、これをマスターインバータとスレーブインバータの共通した界磁の回転位相とする手段を備えたことを特徴とする。
前記マスターインバータと各スレーブインバータは、電圧指令を交流に変換した逆回転座標変換と逆位相の回転座標変換を適用して界磁の回転位相と同期した電流成分に変換する手段と、回転座標上の電圧指令と各巻線の電流検出信号および同期機の回路定数と推定速度から「界磁磁束によって発生する速度起電力の位相情報を含む電圧成分など」の推定位相角を演算する手段を備え、
前記推定位相角を基にして求める推定基準位相θ^を前記回転位相として使用する位相推定手段を備えた同期機の位置センサレス制御装置において、
マスターインバータが演算した推定位相角Δφ^e1から推定速度ω^re1を求める推定速度演算手段と、この推定速度ω^re1を積分して推定位相θ^1を求める積分演算手段と、スレーブインバータが演算した推定位相角Δφ^e2から推定速度ω^re2を求める推定速度演算手段と、この推定速度ω^re2を積分して推定位相θ^2を求める積分演算手段と、前記推定位相θ^1と推定位相θ^2を平均して前記基準推定位相θ^を求める平均演算手段を備えたことを特徴とする。
図1は、本実施形態における同期機の位置センサレス制御装置の制御ブロック図であり、二重巻線の同期機5を2台のインバータ4,4aで巻線別に個々に駆動する場合である。
図2は、本実施形態における同期機の位置センサレス制御装置の制御ブロック図であり、実施形態1に対して、2台のインバータから取得する推定位相角Δφ^e1と推定位相角Δφ^e2に代えて、推定速度ω^1、ω^2に変更したものである。
図3は、本実施形態における同期機の位置センサレス制御装置の制御ブロック図であり、実施形態2に対して、2台のインバータから取得する推定速度ω^reに代えて、推定位相θ^1、θ^2に変更したものである。
4,4a インバータ
5 モータ
8,8a 外乱オブザーバ
10、12、12a 速度推定部
11、11a tan-1関数演算部
13,13a 位置積分部
20 位相角平均演算部
21 速度平均演算部
22 位相平均演算部
23 微分演算部
Claims (4)
- マスターインバータは界磁の回転位相と同期した電圧指令を多相交流に逆回転座標変換および電力増幅して多重巻線構成の同期機の1つの巻線に駆動電流を供給する構成とし、各スレーブインバータも同様に界磁の回転位相と同期した電圧指令を多相交流に逆回転座標変換および電力増幅して多重巻線構成の同期機の他の巻線にそれぞれ駆動電流を供給する構成とし、
前記マスターインバータと各スレーブインバータは、電圧指令を交流に変換した逆回転座標変換と逆位相の回転座標変換を適用して界磁の回転位相と同期した電流成分に変換する手段と、回転座標上の電圧指令と各巻線の電流検出信号および同期機の回路定数と推定速度から「界磁磁束によって発生する速度起電力の位相情報を含む電圧成分など」の推定位相角を演算する手段を備え、
前記推定位相角を基にして求める推定基準位相θ^を前記回転位相として使用する位相推定手段を備えた同期機の位置センサレス制御装置において、
マスターインバータが演算した推定位相角Δφ^e1と、スレーブインバータが演算した推定位相角Δφ^e2とを平均する平均演算手段と、この平均した推定位相角から推定速度ω^reを求める推定速度演算手段と、この推定速度を積分して前記基準推定位相θ^を求める積分演算手段と、これをマスターインバータとスレーブインバータの共通した界磁の回転位相とする手段とを備えたことを特徴とする同期機の位置センサレス制御装置。 - マスターインバータは界磁の回転位相と同期した電圧指令を多相交流に逆回転座標変換および電力増幅して多重巻線構成の同期機の1つの巻線に駆動電流を供給する構成とし、各スレーブインバータも同様に界磁の回転位相と同期した電圧指令を多相交流に逆回転座標変換および電力増幅して多重巻線構成の同期機の他の巻線にそれぞれ駆動電流を供給する構成とし、
前記マスターインバータと各スレーブインバータは、電圧指令を交流に変換した逆回転座標変換と逆位相の回転座標変換を適用して界磁の回転位相と同期した電流成分に変換する手段と、回転座標上の電圧指令と各巻線の電流検出信号および同期機の回路定数と推定速度から「界磁磁束によって発生する速度起電力の位相情報を含む電圧成分など」の推定位相角を演算する手段を備え、
前記推定位相角を基にして求める推定基準位相θ^を前記回転位相として使用する位相推定手段を備えた同期機の位置センサレス制御装置において、
マスターインバータが演算した推定位相角Δφ^e1から推定速度ω^1を求める推定速度演算手段と、スレーブインバータが演算した推定位相角Δφ^e2から推定速度ω^2を求める推定速度演算手段と、前記推定速度ω^1と推定速度ω^2を平均する平均演算手段と、この平均した推定速度ω^reを積分して前記基準推定位相θ^を求める積分演算手段と、これをマスターインバータとスレーブインバータの共通した界磁の回転位相とする手段とを備えたことを特徴とする同期機の位置センサレス制御装置。 - マスターインバータは界磁の回転位相と同期した電圧指令を多相交流に逆回転座標変換および電力増幅して多重巻線構成の同期機の1つの巻線に駆動電流を供給する構成とし、各スレーブインバータも同様に界磁の回転位相と同期した電圧指令を多相交流に逆回転座標変換および電力増幅して多重巻線構成の同期機の他の巻線にそれぞれ駆動電流を供給する構成とし、
前記マスターインバータと各スレーブインバータは、電圧指令を交流に変換した逆回転座標変換と逆位相の回転座標変換を適用して界磁の回転位相と同期した電流成分に変換する手段と、回転座標上の電圧指令と各巻線の電流検出信号および同期機の回路定数と推定速度から「界磁磁束によって発生する速度起電力の位相情報を含む電圧成分など」の推定位相角を演算する手段を備え、
前記推定位相角を基にして求める推定基準位相θ^を前記回転位相として使用する位相推定手段を備えた同期機の位置センサレス制御装置において、
マスターインバータが演算した推定位相角Δφ^e1から推定速度ω^re1を求める推定速度演算手段と、この推定速度ω^re1を積分して推定位相θ^1を求める積分演算手段と、スレーブインバータが演算した推定位相角Δφ^e2から推定速度ω^re2を求める推定速度演算手段と、この推定速度ω^re2を積分して推定位相θ^2を求める積分演算手段と、前記推定位相θ^1と推定位相θ^2を平均して前記基準推定位相θ^を求める平均演算手段を備えたことを特徴とする同期機の位置センサレス制御装置。 - 前記位相推定手段はマスターインバータに設け、スレーブインバータは演算した前記推定位相角または推定速度もしくは推定位相をマスターインバータに対して伝送する手段を設け、マスターインバータは演算した推定基準位相を共通データとして各スレーブインバータに伝送する手段を設けたことを特徴とする請求項1~3のいずれか1項に記載の同期機の位置センサレス制御装置。
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