In a control apparatus of a rotating device, a voltage command value setting section sets terminal command values on the basis of a command value of a control amount of the rotating device. Individual correcting sections calculate feedback operation amounts on the basis of history information of ele
In a control apparatus of a rotating device, a voltage command value setting section sets terminal command values on the basis of a command value of a control amount of the rotating device. Individual correcting sections calculate feedback operation amounts on the basis of history information of electric currents flowing in respective terminals of the rotating device and corrects the terminal voltage command values with the feedback operation amounts. A prohibiting section prohibits difference corresponding amounts, which correspond to differences of the feedback operation amounts and an average of the feedback operation amounts, from being reflected in correcting the terminal voltage command values with maintaining polarities when a determining section determines that it is a switching time from one of a power-running control and a regeneration control to the other.
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1. A control apparatus comprising an operating section and controlling a control amount of a rotating device that includes a plurality of terminals, the operating section operating an alternating-current voltage applying section that includes a plurality of output terminals and applies alternating-c
1. A control apparatus comprising an operating section and controlling a control amount of a rotating device that includes a plurality of terminals, the operating section operating an alternating-current voltage applying section that includes a plurality of output terminals and applies alternating-current voltage from the output terminals to the respective terminals of the rotating device, the operating section includes: a voltage command value setting section receiving a command value of the control amount and setting terminal voltage command values that are command values of voltages of the respective output terminals of the alternating-current voltage applying section as open-loop operation amounts of the control amount;a plurality of individual correcting sections calculating feedback operation amounts for reducing fluctuation in amplitude of electric currents flowing in the respective terminals of the rotating device on the basis of history information of the electric currents flowing in the respective terminals of the rotating device, the individual correcting sections correcting the terminal voltage command values with the feedback operation amounts;a determining section determining whether it is a switching time from one of a power-running control and a regeneration control to the other of the power-running control and the regeneration control; anda prohibiting section prohibiting difference corresponding amounts from being reflected in correcting the terminal voltage command values with maintaining polarities of the difference corresponding amounts when the determining section determines that it is the switching time, the difference corresponding amounts corresponding to differences of the feedback operation amounts and an average of the feedback operation amounts. 2. The control apparatus according to claim 1, wherein the prohibiting section includes an inversion reflecting section that corrects the terminal voltage command values with correction amounts having polarities opposite from the polarities of the difference corresponding amounts when the determining section determines that it is the switching time. 3. The control apparatus according to claim 1, wherein the voltage command value setting section receives a command value of electric current flowing in the rotating device as the command value of the control amount and sets the terminal voltage command values, andthe feedback operation amounts calculated by the individual correcting sections are used for feedback-controlling the electric currents flowing in the respective terminals of the rotating device to the command value of the electric current. 4. The control apparatus according to claim 3, wherein the operating section further includes a separating section that separates the difference corresponding amounts from the feedback operation amounts calculated by the individual correcting sections. 5. The control apparatus according to claim 4, wherein the separating section includes a reducing section that reduces an absolute value of the average. 6. The control apparatus according to claim 5, wherein the reducing section includes a common correcting section that uniformly corrects amplitudes of the voltages of the respective output terminals of the alternating-current voltage applying section with an operation amount for feedback-controlling one of the feedback operation amounts or an average of several of the feedback operation amounts to zero. 7. The control apparatus according to claim 6, wherein the voltage command value setting section sets the terminal voltage command values by inputting the command value of the electric current as the command value of the control amount to a voltage equation in which the electric current flowing in the rotating device is related to terminal voltages of the rotating device using a resistance, an inductance, and a reverse voltage constant of the rotating device, andthe common correcting section controls the resistance so as to feedback-control the average to zero. 8. The control apparatus according to claim 6, wherein the voltage command value setting section includes a calculating section and a converting section,the calculating section receives the command value of the electric current as the command value of the control amount and calculates voltage command values in a rotating two-dimensional coordinate system,the converting section converts the voltage command values in the rotating two-dimensional coordinate system to the terminal voltage command values, andthe common correcting section controls the voltage command values in the rotating two-dimensional coordinate system so as to feedback-control the average to the command value. 9. The control apparatus according to claim 6, wherein the voltage command value setting section includes a calculating section and a converting section,the calculating section receives the command value of the electric current in a rotating two-dimensional coordinate system as the command value of the control amount and calculates voltage command values in the rotating two-dimensional coordinate system,the converting section converts the voltage command values in the rotating two-dimensional coordinate system to the terminal voltage command values, andthe common correcting section controls the command value of the electric current in the rotating two-dimensional coordinate system so as to feedback-control the average to the command value. 10. The control apparatus according to claim 4, wherein the separating section includes an average calculating section and a difference corresponding amount calculating section,the average calculating section calculates an average of several of the feedback operation amounts calculated by the individual correcting sections, andthe difference corresponding amount calculating section calculates the difference corresponding amounts by subtracting the average from the respective feedback operation amounts when the determining section determines that it is the switching time. 11. The control apparatus according to claim 5, wherein the voltage command value setting section sets the terminal voltage command values by inputting the command value of the electric current as the command value of the control amount to a voltage equation in which the electric current flowing in the rotating device is related to terminal voltages of the rotating device using a resistance and an inductance of the rotating device, andthe reducing section includes a resistance changeable section that is capable of changing the resistance in the voltage equation. 12. The control apparatus according to claim 1, wherein the prohibiting section includes an initializing section that sets the difference corresponding amounts in the feedback operation amounts calculated by the individual correcting sections to zero when determining section determines that it is the switching time. 13. The control apparatus according to claim 1, wherein the determining section sets a hysteresis between a condition for determining a switching time from the power-running control to the regeneration control and a condition for determining a switching time from the regeneration control to the power-running control. 14. The control apparatus according to claim 1, wherein the individual correcting sections perform processes of calculating the feedback operation amounts based on the history information as outputs of integral elements. 15. The control apparatus according to claim 1, wherein the alternating-current voltage applying section includes a direct-current to alternating-current converting circuit that includes a plurality of switching elements selectively coupling the terminals of the rotating device to a positive-electrode or a negative-electrode of a direct-current voltage source,the operating section further includes an identification section,the identification section receives a detection value of electric current flowing in a negative-electrode-side input terminal of the direct-current to alternating-current converting circuit or electric current flowing in a positive-electrode-side input terminal of the direct-current to alternating-current converting circuit, andthe identification section identifies which one of the terminals of the rotating device the electric current of which detection value is received flows in on the basis of a switching mode expressing an on-state or an off-state of each of the switching elements.
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이 특허에 인용된 특허 (3)
Kato, Sho; Kimpara, Yoshihiko; Kobayashi, Takahiko; Terashima, Satoru, Control device for AC rotating machine.
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