Motor control method and device thereof
AssigneeDaikin Industries, Ltd.
InventorNobuki Kitano
Life of this patent
Estimating the term…
Abstract
A motor control apparatus comprises the amplitude adjustment section and the peak voltage control section so as to adjust the torque control output in correspondence with the output voltage of the inverter. The peak voltage control section detects the peak voltage of the voltage command, and outputs the adjustment command instructing the amplitude adjustment section to suppress the amplitude when the peak voltage possibly exceed the previously determined value which is determined with respect to the maximum output voltage or maximum modulation rate of the inverter. The amplitude adjustment section lowers the gain by carrying out processing such that a constant proportional value is removed from the integration value, for example, in response to the supplying of the adjustment command.
Claims24
A motor control method for controlling at least one of voltage and current applied to a motor from an inverter so as to suppress rotational speed variations of the motor which drives a periodic load, the method comprising the steps of:
- detecting at least one of an output voltage value of and a command value of the inverter as a detection value, and
- controlling at least one of voltage and current of the inverter based upon the detection value so that one of the output voltage value and the command value of the inverter does not exceed a predetermined value.
A motor control method for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress rotational speed variations of the motor which drives a periodic load, the method comprising the steps of:
- detecting at least one of an output voltage value and a command value of the inverter as a detection value, and
- controlling at least one of voltage and current of the inverter based upon the detection value so that one of the output voltage value and command value of the inverter does not exceed a predetermined value, taking precedence over suppression of the rotational speed variations.
A motor control method for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress rotational speed variations of the motor which drives a periodic load, the method comprising the steps of:
- decreasing an amplitude of an output torque variation of the motor, and
- controlling at least one of voltage and current of the inverter so that at least one of the output voltage value and the command value of the inverter does not exceed a predetermined value.
A motor control method for controlling at least one of voltage and current applied to a motor from an inverter so as to suppress rotational speed variations of the motor which drives a periodic load, the method comprising the steps of:
- detecting a current of the inverter using current detection section as a current detection value, and
- controlling at least one of voltage and the current of the inverter based upon the current detection value so as not to exceed a current detection extent.
A motor control method for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress rotational speed variations of the motor which drives a periodic load, the method comprising the steps of:
- detecting a current of the inverter as a current detection value using a current detection section for driving the motor, and
- controlling at least one of voltage and the current of the inverter based upon the current detection value so as not to exceed a current detection extent, for driving the motor.
A motor control method for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress rotational speed variations of the motor which drives a periodic load, the method comprising the steps of:
- decreasing an amplitude of an output torque variation of the motor, and
- controlling at least one of voltage and current of the inverter so as not to exceed a current detection extent.
A motor control method for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress rotational speed variations of the motor which drives a periodic load, the method comprising the steps of:
- detecting or estimating load, and
- not suppressing rotational speed variations of the motor in correspondence with the load being smaller than a predetermined value.
A motor control method for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress v of the motor which drives a periodic load, wherein a converter is provided which can control a direct current voltage supplied to the inverter, the method comprising the steps of:
- detecting at least one of an output voltage value and a command value of the inverter as a detection value, and
- controlling at least one of voltage and the current of the inverter based upon the detection value so that one of the output voltage value and the command value of the inverter does not exceed the predetermined value.
A motor control apparatus for controlling at least one of voltage and current applied to a motor from an inverter so as to suppress rotational speed variations of the motor which drives a periodic load, the apparatus comprising:
- a detection section for detecting at least one of an output voltage value and a command value of the inverter as a detection value, and
- an inverter control section for controlling at least one of voltage and current of the inverter based upon the detection value so that one of the output voltage value and the command value of the inverter does not exceed a predetermined value.
A motor control apparatus for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress rotational speed variations of the motor which drives a periodic load, the apparatus comprising:
- a detection section for detecting at least one of an output voltage value and a command value of the inverter as a detection value, and
- an inverter control section for controlling at least one of voltage and current of the inverter based upon the detection value so that one of the output voltage value and the command value of the inverter does not exceed a predetermined value, taking precedence over suppression of rotational speed variations.
A motor control apparatus for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress rotational speed variations of the motor which drives a periodic load, the apparatus comprising:
- a section for decreasing an amplitude of an output torque variation of the motor, and
- an inverter control section for controlling at least one of voltage and current of the inverter so that one of the output voltage value and the command value of the inverter does not exceed a predetermined value.
A motor control apparatus for controlling at least one of voltage and current applied to a motor from an inverter so as to suppress rotational speed variations of the motor which drives a periodic load, the apparatus comprising:
- a current detection section for detecting the current of the inverter as a current detection value, and
- an inverter control section for controlling at least one of voltage and the current of the inverter based upon the current detection value so as not to exceed a current detection extent.
A motor control apparatus for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress rotational speed variations of the motor which drives a periodic load, the apparatus comprising:
- a current detection section for detecting as a current detection value at least one of an input current and an output current of the inverter, for driving the motor, and
- an inverter control section for controlling at least one of voltage and current of the inverter based upon the current detection value so as not to exceed a current detection extent, for driving the motor.
A motor control apparatus for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress rotational speed variations of the motor which drives a periodic load, the apparatus comprising:
- a section for decreasing an amplitude of an output torque variation of the motor, and
- an inverter control section for controlling at least one of voltage and current of the inverter so as not to exceed a current detection extent.
A motor control apparatus for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress rotational speed variations of the motor which drives a periodic load, the apparatus comprising:
- a load detection section for detecting or estimating load, and
- an inverter control section for not suppressing rotational speed variations of the motor in correspondence with the load being smaller than a predetermined value.
A motor control apparatus for controlling at least one of voltage and current applied to a motor from an inverter for varying motor output torque so as to suppress rotational speed variations of the motor which drives a periodic load, wherein a converter is provided which can control a direct current voltage supplied to the inverter, the apparatus comprising:
- a detection section for detecting at least one of output voltage value and a command value of the inverter as a detection value, and
- an inverter control section for controlling at least one of voltage and current of the inverter based upon the detection value so that one of the output voltage value and the command value of the inverter does not exceed a predetermined value.
Dependencies are inferred from the claim text.