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AssigneeDaiken Industries, Ltd.
InventorsToshiyuki Maeda, Tomoisa Taniguchi
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The phase current detection apparatus comprises an output time detection section 6a for receiving a voltage vector command as input, and for detecting a voltage vector which should be enlarged its output time, output time enlargement section 6bfor receiving the voltage vector command and the voltage vector detected by the output time detection section 6a as input, and for carrying out enlargement processing for output time (enlarge the output time up to a length allowing the current detector 5 to detect the voltage vector), subtraction section 6c for subtracting the length of actually output voltage vector from the voltage vector command, and for outputting an error, output error integrating section 6d for integrating the error from the subtraction section 6g and for calculating an integrated error of an output with respect to the voltage vector command, reverse vector generation section 6e for outputting a vector (reverse vector) which is obtained by replacing the ON/OFF in Table 1 for the enlarged voltage vector, and selection section 6f for carrying out the replacing operation depending upon the sign of the integrated error from the output error integrating section 6d so as to select the output from the output time enlargement section 6b and the output from the reverse vector generation section 6e . Therefore, decrease in cost, detection of a phase current with stability at a desired timing, and great decrease in distortion in voltage waveform are realized.
A phase current detection method is a method which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied and which restricts the minimum pulse width, which method is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the method comprising the step of:
A phase current detection method is a method which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied and which restricts the minimum pulse width, which method is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the method comprising the step of:
A phase current detection method is a method which detects a DC link current and calculates a phase current of a motor (4), which method is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the method comprising the steps of:
A phase current detection method is a method which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied, which method is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the method comprising the step of:
A phase current detection method is a method which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied, which method is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the method comprising the step of:
An inverter control method is a method which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied, which method is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), and which carries out current controlling or position-sensor-less controlling, the method comprising the step of:
A phase current detection apparatus is an apparatus which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied and which restricts the minimum pulse width, which apparatus is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the apparatus comprising:
A phase current detection apparatus is an apparatus which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied and which restricts the minimum pulse width, which apparatus is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the apparatus comprising:
A phase current detection apparatus is an apparatus which detects a DC link current and calculates a phase current of a motor (4), which apparatus is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the apparatus comprising:
A phase current detection apparatus is an apparatus which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied, which apparatus is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the apparatus comprising:
A phase current detection apparatus is an apparatus which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied, which apparatus is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the apparatus comprising:
An inverter control apparatus is an apparatus which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied, which apparatus is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), and which carries out current controlling or position-sensor-less controlling, the apparatus comprising:
A phase current detection method is a method which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied and which restricts the minimum pulse width, which method is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the method comprising the steps of:
A motor controlling method is a method which calculates a motor voltage from a DC link voltage and a gate-pulse width, detects a phase current from a DC link current and a vector pattern to be applied, and controls a motor (4) based upon the calculated motor voltage and the detected phase current, the method comprising the step of:
A phase current detection method is a method which calculates a phase current from the current of DC link and vector pattern to be applied, the method comprising the steps of:
A phase current detection apparatus is an apparatus which detects a phase current of a motor (4) based upon a DC link current and a vector pattern to be applied and which restricts the minimum pulse width, which apparatus is included in a motor driving apparatus for driving a motor (4) by supplying outputs from a PWM inverter (3) to the motor (4), the apparatus comprising:
A motor controlling apparatus is an apparatus which calculates a motor voltage from a DC link voltage and a gate-pulse width, detects a phase current from a DC link current and a vector pattern to be applied, and for controlling a motor based upon the calculated motor voltage and the detected phase current, the apparatus comprising:
Dependencies are inferred from the claim text.