WO2008026249A1 - Ac motor vector control apparatus - Google Patents
Ac motor vector control apparatus Download PDFInfo
- Publication number
- WO2008026249A1 WO2008026249A1 PCT/JP2006/316961 JP2006316961W WO2008026249A1 WO 2008026249 A1 WO2008026249 A1 WO 2008026249A1 JP 2006316961 W JP2006316961 W JP 2006316961W WO 2008026249 A1 WO2008026249 A1 WO 2008026249A1
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- WO
- WIPO (PCT)
- Prior art keywords
- motor
- capacitor voltage
- damping
- vector control
- control unit
- Prior art date
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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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
-
- 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
- H02P21/05—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for damping motor oscillations, e.g. for reducing hunting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/16—Electric propulsion with power supply external to the vehicle using ac induction motors
- B60L9/18—Electric propulsion with power supply external to the vehicle using ac induction motors fed from dc supply lines
-
- 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
-
- 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
-
- 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
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/026—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being a power fluctuation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Definitions
- the present invention relates to a vector control device for an AC motor that performs vector control of the AC motor.
- Non-Patent Document 1 Akira Kimura et al. “Consideration on Stability of Induction Motor Driven Electric Vehicle Control System”, IEEJ Transactions D, 110-3, 1990, pp. 291-300
- Non-Patent Document 2 Shinichiro Kondo et al. “Consideration on Magnetic Flux of IM Speed Sensorless Control System when Driving Railway Vehicle”, IEEJ Semiconductor Power Conversion Study Group Material, SPC03-100, 2003, pp. 69-74
- Non-Patent Document 1 the damping operation obtained by detecting the capacitor voltage, extracting the vibration component with a bandpass filter (BPF), adjusting the phase, and multiplying the gain
- a damping control unit configured to add the amount to the slip frequency command (Non-patent document 1) or torque command (Non-patent document 2) is added to suppress the electric vibration of the LC filter circuit.
- Non-Patent Document 1 is an application example to an electric motor control system to which slip frequency control is applied
- Non-Patent Document 2 is an application example to an electric motor control system to which vector control is applied. Disclosure of the invention
- the conventional damping control unit includes a control system including a BPF and a gain force.
- BPF setting it is sufficient to set the constant so that the resonance frequency components of the rear tuttle and the capacitor can be detected without phase delay.
- gain setting if the gain is too low, the electric vibration is suppressed. If the effect is insufficient, and if it is too high, electric vibrations having a frequency higher than the resonance frequency will continue to occur, so an optimum gain setting in between must be set.
- Non-Patent Document 1 is a force that is trying to calculate the optimal gain setting by analyzing the control system in the frequency domain. The calculation process is not simple, and the calculated gain is still set in the control system. Work is necessary. Also, as shown in Non-Patent Document 1, since the constants of the motor are used in the calculation process formula, if the type of the motor connected to the inverter changes, the corresponding gain is calculated again. Must be set. As described above, it takes much time to set the gain of the conventional damping control unit.
- the present invention has been made to solve the above problem, and provides a vector control device for an AC motor that can simplify the adjustment work of a control system for suppressing the electric vibration of an LC filter circuit. It is for the purpose.
- the present invention has an LC filter circuit having a rear tuttle and a capacitor power on the DC power supply side, and converts the voltage across the capacitor (capacitor voltage) into an AC voltage of an arbitrary frequency via an inverter.
- the vector control device of the AC motor for vector control In the vector control device of the AC motor for vector control,
- a solid-state control unit that performs vector control of the AC motor in accordance with a current command or a torque command; and a dumping control unit that calculates a damping operation amount that suppresses fluctuations in the capacitor voltage. Then, the fluctuation rate of the capacitor voltage is calculated, and the current command or the torque command of the vector control unit is operated by the damping operation amount according to the fluctuation rate, and the fluctuation is changed with respect to the fluctuation of the capacitor voltage.
- the inverter so that the current flowing through the inverter changes in the direction of suppression. Data.
- the adjustment work of the control system for suppressing the electric vibration of the LC filter circuit can be simplified.
- FIG. 1 is a block diagram showing a configuration of a vector control device for an AC motor according to Embodiment 1 of the present invention.
- FIG. 2 is an explanatory diagram showing a circuit in which an inverter controlled at constant power is connected to an LC filter connected to a DC power source.
- FIG. 3 is a diagram showing a transfer function block of the system of FIG.
- FIG. 4 is an explanatory diagram showing a circuit in which a load composed of a resistor is connected to an LC filter connected to a DC power source.
- FIG. 5 is a diagram showing a transfer function block of the system of FIG.
- Fig. 6 is a diagram for explaining a signal relationship of each part of the damping control unit in the first embodiment of the present invention.
- FIG. 7 is a diagram showing an operation simulation result of the vector control apparatus for an AC electric motor in the first embodiment of the present invention.
- Subtractor 12 q-axis current controller
- FIG. 1 is a block diagram showing a configuration of a vector control device for an AC motor according to Embodiment 1 of the present invention.
- the main circuit is a DC power supply 1 and the harmonic current is prevented from flowing out to the power supply side.
- it has an LC filter circuit consisting of a rear tuttle 2 and a capacitor 3, and the voltage across the capacitor 3 (capacitor voltage) Efc is converted to AC by an inverter 4 that converts the AC voltage to an arbitrary frequency.
- a vector control device 50 that performs vector control of the AC motor 6 is provided.
- the vector control device 50 includes a vector control unit 30 and a damping control unit 40, and includes a signal cor from the speed detector 7 that detects the rotational speed of the AC motor 6, and current detectors 5a to 5c that detect the motor current. Signals Iu, Iv, Iw, and capacitor 3 voltage Efc are input.
- the remaining one phase can be calculated and calculated.
- the damping control unit 40 disclosed in the present invention is also useful when a synchronous motor is used as the AC motor 6.
- the vector control unit 30 controls the AC motor on the dq axis rotation coordinate system in which the axis that coincides with the secondary magnetic flux axis of the AC motor 6 is defined as the d axis, and the axis orthogonal to the d axis is defined as the q axis. The so-called vector control is performed.
- the vector control unit 30 includes a torque basic command T mO *, a secondary magnetic flux command ⁇ 2 *, and a U-phase current detected by the current detectors 5a to 5c, which are generated by a higher-level control unit (not shown! ⁇ ). Iu, V-phase current Iv, and W-phase current Iw are input, and torque Tm generated by AC motor 6 is generated from torque basic command TmO *. ) To match.
- the q-axis current command generator 8 and d-axis current command generator 9 integrate the damping operation amount DAMPCN (described later) to the basic torque command TmO * input from an external controller (not shown).
- M is the mutual inductance
- 12 is the secondary leakage inductance
- s is the differential operator
- PP is the number of pole pairs of the AC motor 6
- R2 is the secondary resistance of the AC motor 6.
- Iq * ( ⁇ * ⁇ ( ⁇ 2 * ⁇ ⁇ )) ⁇ (L2 / M) (1)
- Id * 0> 2 * / M + L2 / (M'R2) 's0> 2 * (2)
- the slip angular frequency command generation unit 19 calculates the slip angular frequency command given to the AC motor 6 from the following equation (3) from the d-axis current command Id *, the q-axis current command Iq * and the circuit constant of the AC motor 6. Calculate ⁇ s *.
- Three-phase dq-axis coordinate converter 23 calculates U-phase current Iu, V-phase current Iv, and W-phase current Iw detected by current detectors 5a to 5c using the following equation (4): dq coordinate Convert to upper d-axis current Id and q-axis current Iq.
- the subtracter 10 calculates the difference between the q-axis current command Iq * and the q-axis current Iq, and inputs the result to the q-axis current controller 12 in the next stage.
- the q-axis current controller 12 performs proportional-integral control on the input value and outputs a q-axis voltage compensation value qe.
- the subtractor 11 calculates the difference between the d-axis current command Id * and the d-axis current Id and inputs the result to the d-axis current controller 13 in the next stage.
- the d-axis current controller 13 proportionally integrates and amplifies the input value and outputs a d-axis voltage compensation value de.
- s is a differential operator, K1; proportional gain, K2: integral gain.
- the voltage non-interference calculation unit 14 calculates the d-axis feed from the d-axis current command Id *, the q-axis current command Iq *, and the circuit constants of the AC motor 6 by the following equations (7) and (8). Calculates forward voltage Ed * and q-axis feed forward voltage Eq *.
- the vector controller 6 uses the torque command Tm * and the secondary magnetic flux command ⁇ 2 * force to calculate the q-axis current command Iq * and the d-axis current command Id *.
- Vector control with current feedback control so that q-axis current Iq and d-axis current Id
- the AC motor 6 rotates by outputting a torque Tm that matches the torque command Tm *.
- FIG. 2 is a diagram showing a circuit in which an inverter 4 controlled at constant power is connected to an LC filter connected to the DC power source 1.
- Figure 2 is a simplified representation of the system shown in Figure 1.
- an LC filter circuit composed of a rear tuttle 2 and a capacitor 3 is connected to a DC power source 1, and an inverter 4 that drives and controls the AC motor 6 is connected to the capacitor 3.
- the rear tuttle 2 consists of an inductance L and a resistance R.
- Capacitor 3 has a capacitance C.
- the inverter 4 is configured to be controlled so that the output of the AC motor 6 is maintained constant even when the capacitor voltage Efc varies, that is, constant power characteristics with respect to the variation of the capacitor voltage Efc. . In other words, even if Efc fluctuates, the input power Pinv of the inverter 4 is controlled so as not to change.
- the inverter 4 viewed from the DC power supply 1 side has a negative resistance characteristic.
- the negative resistance characteristic is a characteristic in which the inverter input current Idc decreases as the capacitor voltage Efc increases, and the inverter input current Idc decreases as the capacitor voltage Efc increases.
- Normal resistance positive resistance Is a characteristic in which the change in current is opposite to the change in voltage. It is common knowledge that normal resistance (positive resistance) increases when the voltage rises and decreases when the voltage decreases.
- the DC section of the system shown in FIG. 2 exhibits negative resistance characteristics, and as the capacitor voltage Efc increases, the inverter input current Idc decreases.
- the operation promotes the increase of Efc, and conversely, the inverter input current Idc increases as the capacitor voltage Efc decreases, so the operation promotes the decrease of the capacitor voltage Efc. For this reason, braking does not work against fluctuations in the capacitor voltage Efc, the electric vibration of the LC filter circuit increases, and the capacitor voltage Efc continuously vibrates near the resonance frequency of the LC filter.
- inverter 4 is controlled so that its output is constant.
- relational expression of inverter input power Pinv, capacitor voltage Efc, and inverter input current Idc is given by the following equation (11).
- Equation (16) contains no useful information and is ignored here. Equation (15) can be rewritten as the following equation (17).
- the value of R is R> 0.8 ( ⁇ ).
- the resistance component existing on the DC side is as small as several tens of ⁇ , and it is difficult to satisfy Equation (17), the system becomes unstable, and the LC filter circuit generates vibration.
- the capacitor voltage Efc oscillates and diverges unless a resistor satisfying Equation (17) is added to the circuit shown in FIG. 2 or if the stability is not controlled.
- Non-Patent Document 1 Non-Patent Document 1. It is as shown in Patent Document 2.
- FIG. 4 is a diagram showing a circuit in which a load composed of a resistor 60 is connected to the LC filter connected to the DC power source 1. Compared with the circuit shown in FIG. 2, the inverter 4 and the AC motor 6 are replaced with a resistor 60. The resistance value of resistor 60 is RO. The transfer function block diagram of the system shown in Fig. 4 is shown in Fig. 5.
- the circuit in which the resistor 60 is connected to the LC filter connected to the DC power supply 1 is always stable.
- the present invention focuses on this principle, and The feature is that the inverter 4 is controlled so as to be equivalent to the characteristic shown when the resistor 60 is connected to the vibration component of the denser voltage Efc.
- the power PRn at the resistor 60 is proportional to the square of the change rate of the capacitor voltage Efc.
- the inverter 4 can be operated so as to have a positive resistance characteristic with respect to the fluctuation of the capacitor voltage Efc.
- the rotational frequency FM of the AC motor 6 is a value that changes according to the speed of the electric vehicle.
- the resonance frequency of the LC filter circuit handled by the damping control unit 40 is 10 Hz to 20 Hz, and when converted to a period, the time is 50 ms to: LOOms. From the above, the vibration cycle of the LC filter circuit can be regarded as a sufficiently short time with respect to the speed change of the electric vehicle. Therefore, in considering the configuration of the damping control unit 40, the rotational frequency FM of the AC motor 6 is constant. is there You can assume that.
- the inverter input power Pinv is proportional to the square of the variation percentage of the capacitor voltage Efc varies Be made.
- the value obtained by squaring the fluctuation ratio of the capacitor voltage Efc may be integrated with the torque command Tm *.
- the inverter 4 has a positive resistance characteristic with respect to the fluctuation of the capacitor voltage Efc, and can suppress the electric vibration of the LC filter circuit and stabilize it.
- FIG. 6 is a diagram for explaining the relationship of signals inside the damping control unit 40 according to the first embodiment of the present invention.
- the damping controller 40 receives the voltage Efc of the capacitor 3 and branches to two systems.
- the high-pass filter (hereinafter HPF) 41 and the low-pass filter (hereinafter LPF) 43 cut unnecessary high-frequency components and unnecessary low-frequency components, and only the vicinity of the resonance frequency of the LC filter circuit is extracted.
- Efca Is calculated. For example, as shown in Fig. 6 (a), when the capacitor voltage Efc oscillates from 1650V to 1350V around 1500V, Efc a is in the range of + 150V to 1150V as shown in Fig. 6 (b). The signal fluctuates in the same phase as the vibration component of the capacitor voltage Efc.
- HPF41, LPF42, and LPF43 are first-order filters composed of first-order lag elements, and their configurations are well-known and will not be described. Of course, a second or higher order filter may be used, but the filter configuration is complicated.
- LPF43 is required to remove high-frequency components included in the capacitor voltage Efc, which are disturbances to the control system.
- the lower limit of the high-frequency component to be removed is several hundred Hz, which is close to the resonance frequency band of the LC filter (usually about 10 to 20 Hz) that is the object of damping control. If this is removed, the resonance frequency component of the LC filter contained in the vibration component Efca will be affected, and the phase delay will be reduced. This is not preferable.
- the resonance frequency component of the LC filter included in the vibration component Efca is ensured while ensuring the same high-frequency component removal characteristics as when LPF43 is used alone. It is possible to improve the phase lag of. Regarding the characteristics of HPF41 and LPF43, it is desirable to match the frequency at which the gain is 1 to the vibration frequency (10Hz to 20Hz) of the LC filter! /.
- the vibration component Efca calculated as described above is subjected to the DC component Efcd by the force [] calculator 44, and this is set as the filtered capacitor voltage Ef cad (FIG. 6 (c)).
- the divider 45 calculates the fluctuation rate Efcfp of the capacitor voltage Efc by dividing the filtered capacitor voltage Efcad by the DC component Efcd.
- Efcfp is input to the square calculator 48 as it is.
- the reversal operation reversal signal Efcfn which is obtained by subtracting the change rate Efcfp of the capacitor voltage Efc from 2 by the subtractor 46, is selected by the switch 47 and input to the square calculator 48.
- the regenerative operation inversion signal Efcfn is a signal obtained by inverting the phase of the fluctuation rate Efcfp of the capacitor voltage Efc (Fig. 6 (d)).
- the square calculator 48 squares the fluctuation rate Efcfp of the capacitor voltage Efc or the reversal signal Efcfn for regenerative operation and inputs it to the limiter 49.
- the limiter 49 the upper limit and the lower limit are limited to arbitrary values as necessary, and then output to the vector control unit 30 as a damping operation amount DAMPCN (FIG. 6 (e)).
- the limiter 49 is set when, for example, the amount of transient fluctuation of the torque Tm of the AC motor 6 due to damping control is limited.
- the vector control unit 30 adds the damping operation amount DAMPCN to the torque basic command TmO *, and performs vector control based on the torque command Tm * as a result.
- the inverter 4 is operated so as to have a positive resistance characteristic against the fluctuation of the capacitor voltage Efc, and the capacitor voltage Ef The vibration of c is suppressed, and the AC motor 6 can be stably operated.
- FIG. 7 is a diagram showing an operation simulation result of the vector control device for the AC electric motor in the first embodiment of the present invention.
- Fig. 7 shows the configuration shown in Fig. 1, with the basic torque command TmO * set to about 500N.m and operating the AC motor 6, while the voltage Es of the DC power source 1 is between 800V and 1000V in steps of 500ms. The waveform when changed is shown.
- the damping operation amount DAMPCN is integrated into the torque basic command TmO *.
- the same effect can be obtained by integrating it into the q-axis current command Iq *. .
- ⁇ Idc DAM PCNZn is the amount of fluctuation of the current flowing through the power converter with respect to the fluctuation of the capacitor voltage, ignoring the second and higher order terms of ⁇ ⁇ .
- the inverter can be controlled so that the current flowing through the inverter changes in a direction that suppresses the fluctuation in response to fluctuations in the capacitor voltage, and the electric vibration of the LC filter circuit does not become unstable.
- the calculation formula of the damping operation amount DAMPCN does not have to be a quadratic expression of ⁇ , but may be a linear expression or an expression of a cubic expression or higher, or a fractional expression having a ⁇ polynomial in the denominator and numerator.
- the coefficient for ⁇ is greater than 1 in the calculation formula for coasting operation, and any calculation formula can be used as long as it is smaller than the coefficient force of ⁇ for the regenerative operation! /.
- the configuration shown in the first embodiment is an example of the content of the present invention, and can be combined with another known technique, and is within the scope of the present invention. Needless to say, it is possible to change the configuration by omitting some parts.
- the present invention is not limited to the vector control apparatus for AC electric motors for electric railways, but can be applied to various related fields such as automobiles, elevators, and power systems. .
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- Power Engineering (AREA)
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Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/377,644 US8106620B2 (en) | 2006-08-29 | 2006-08-29 | Vector control device for alternating-current electric motor |
CA2660601A CA2660601C (en) | 2006-08-29 | 2006-08-29 | Vector control device for alternating-current electric motor |
EP06796941.0A EP2058940B1 (en) | 2006-08-29 | 2006-08-29 | Ac motor vector control apparatus |
ES06796941.0T ES2462367T3 (es) | 2006-08-29 | 2006-08-29 | Aparato de control vectorial para un motor de CA |
JP2007506599A JP4065901B1 (ja) | 2006-08-29 | 2006-08-29 | 交流電動機のベクトル制御装置 |
CN2006800557108A CN101507100B (zh) | 2006-08-29 | 2006-08-29 | 交流电动机的矢量控制装置 |
KR1020087030181A KR101004182B1 (ko) | 2006-08-29 | 2006-08-29 | 교류 전동기의 벡터 제어 장치 |
PCT/JP2006/316961 WO2008026249A1 (en) | 2006-08-29 | 2006-08-29 | Ac motor vector control apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/316961 WO2008026249A1 (en) | 2006-08-29 | 2006-08-29 | Ac motor vector control apparatus |
Publications (1)
Publication Number | Publication Date |
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WO2008026249A1 true WO2008026249A1 (en) | 2008-03-06 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/316961 WO2008026249A1 (en) | 2006-08-29 | 2006-08-29 | Ac motor vector control apparatus |
Country Status (8)
Country | Link |
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US (1) | US8106620B2 (ja) |
EP (1) | EP2058940B1 (ja) |
JP (1) | JP4065901B1 (ja) |
KR (1) | KR101004182B1 (ja) |
CN (1) | CN101507100B (ja) |
CA (1) | CA2660601C (ja) |
ES (1) | ES2462367T3 (ja) |
WO (1) | WO2008026249A1 (ja) |
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RU2463699C1 (ru) * | 2008-12-15 | 2012-10-10 | Мицубиси Электрик Корпорейшн | Устройство преобразования мощности для возбуждения электродвигателя |
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US20120147638A1 (en) * | 2009-09-29 | 2012-06-14 | Mitsubishi Electric Corporation | Electric power conversion device |
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Also Published As
Publication number | Publication date |
---|---|
CN101507100A (zh) | 2009-08-12 |
KR20090014378A (ko) | 2009-02-10 |
CN101507100B (zh) | 2011-10-26 |
EP2058940B1 (en) | 2014-03-19 |
JP4065901B1 (ja) | 2008-03-26 |
KR101004182B1 (ko) | 2010-12-24 |
EP2058940A4 (en) | 2013-01-23 |
CA2660601C (en) | 2012-06-26 |
ES2462367T3 (es) | 2014-05-22 |
JPWO2008026249A1 (ja) | 2010-01-14 |
US20100237821A1 (en) | 2010-09-23 |
EP2058940A1 (en) | 2009-05-13 |
US8106620B2 (en) | 2012-01-31 |
CA2660601A1 (en) | 2008-03-06 |
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