Abstract: When a failure of current detection parts occurs while a synchronous machine is operating, the failure of the current detection parts is detected and the operation of the synchronous machine is continued. An open-loop control part for performing control without using the detected current values of the current detection parts and a closed-loop control part for performing control using the detected current values are included, and a failure of the current detection parts is detected while the open-loop control part is operating.

Abstract: A conveyor system for conveying an article that is stored while being suspended from a rail, the conveyor system including a bag having a body and a suspending member that suspends the body, and reorienting devices that reorient the bag. The bag has an opening on the body such that the article is dropped into and discharged from the opening. The reorienting devices include engaging members that are engaged with the body. The engaging members are engaged with the interior of the body so as to reorient the body from at least one of an orientation for conveying the article to an orientation for dropping the article into the opening or from the orientation for conveying the article to an orientation for discharging the article from the opening.

Abstract: A bag capable of storing an article, the bag being conveyed while being suspended from a rail. The bag includes: a body that stores the article; a suspending member that suspends the body from the rail; and a reorienting member that reorients the body with respect to the suspending member. The body includes a bag having an internal storage space for the article, and the reorienting member is provided independently of the body, is supported pivotally with respect to the suspending member, has a free end in the body so as to pivot with respect to the suspending member, and pivots with respect to the suspending member so as to reorient the body.

Abstract: A conveyor system for conveying an article that is stored while being suspended from a rail, the conveyor system including a bag having a body and a suspending member that suspends the body, and reorienting devices that reorient the bag. The bag has an opening on the body such that the article is dropped into and discharged from the opening. The reorienting devices include engaging members that are engaged with the body. The engaging members are engaged with the interior of the body so as to reorient the body from at least one of an orientation for conveying the article to an orientation for dropping the article into the opening or from the orientation for conveying the article to an orientation for discharging the article from the opening.

Abstract: To provide an AC rotary machine controller which can improve setting accuracy of torque command correction value in a region where change of torque command correction value to change of rotational speed and torque becomes large and where nonlinearity is high, and can suppress increase in data amount of correction value setting map. In correction value setting map, one or both of a torque axis unequal interval setting that sets interval of the torque command map axis to unequal interval in each rotational speed; and a rotation axis unequal interval setting that sets interval of the rotational speed map axis to unequal interval were done.

Abstract: The control device for a rotary electrical machine which is connected between a DC power source and a rotary electrical machine and which controls driving of the rotary electrical machine by converting DC power from the DC power source into AC power, includes a power conversion circuit which is configured from a plurality of switching elements, a phase current detection unit which detects phase currents in the rotary electrical machine, a phase current ratio derivation unit which derives a ratio in which the phase currents detected by the phase current detection unit are equal to or greater than a reference value, or equal to or lower than the reference value, and an element fault determination unit which determines a fault status of each of the switching elements when the ratio derived by the phase current ratio derivation unit is equal to or greater than a previously established ratio threshold value.

Abstract: To provide an AC rotary machine controller which can improve setting accuracy of torque command correction value in a region where change of torque command correction value to change of rotational speed and torque becomes large and where nonlinearity is high, and can suppress increase in data amount of correction value setting map. In correction value setting map, one or both of a torque axis unequal interval setting that sets interval of the torque command map axis to unequal interval in each rotational speed; and a rotation axis unequal interval setting that sets interval of the rotational speed map axis to unequal interval were done.

Abstract: Provided are a synchronous machine control device SMCD including a converter configured to boost a voltage of a direct current power source DCPS in which, when the SMCD returns to operation after the operation stopping, fail-proof return to operation through the prevention of damage to the DCPS and the shortening of the time required for the return to operation are balanced. When returning to operation, the SMCD issues an operation enable command to an inverter and the converter simultaneously in the case where a calculated electric power value calculated from a rotational speed and a torque command is equal or higher than a threshold and, in the case where the calculated electric power value is less than the threshold, issues an operation enable command to the converter after an operation command that makes the electric power of the inverter equal or higher than a threshold is issued.

Abstract: Provided is a control device for a permanent magnet-type rotating electrical machine (100), which includes a current coordinate transformation unit (109) configured to output a d-axis current and a q-axis current by coordinate transformation of three-phase AC currents respectively detected by current detection units (111, 112, 113), a current correction direction calculation unit (108) configured to calculate a current correction direction through use of the d-axis current and the q-axis current, and a current correction amount addition unit (102) configured to correct a d-axis current command and a q-axis current command based on the current correction direction. In this manner, an induced voltage is converged to lie within a maximum voltage circle in accordance with a power supply voltage.

Abstract: A method of controlling a rotary electric machine, which is configured to supply an electric control amount to a power conversion unit, which is configured to convert a DC voltage from a power source into a drive current to the rotary electric machine in accordance with the electric control amount, the method including: using a conversion map, which is used to calculate the electric control amount based on a rotation speed of the rotary electric machine at a particular DC voltage of the rotary electric machine and a required command value; and calculating the electric control amount in accordance with a ratio between the particular DC voltage and the rotation speed of the rotary electric machine in determining the electric control amount in accordance with the conversion map.

Abstract: The control device for a rotary electrical machine which is connected between a DC power source and a rotary electrical machine and which controls driving of the rotary electrical machine by converting DC power from the DC power source into AC power, includes a power conversion circuit which is configured from a plurality of switching elements, a phase current detection unit which detects phase currents in the rotary electrical machine, a phase current ratio derivation unit which derives a ratio in which the phase currents detected by the phase current detection unit are equal to or greater than a reference value, or equal to or lower than the reference value, and an element fault determination unit which determines a fault status of each of the switching elements when the ratio derived by the phase current ratio derivation unit is equal to or greater than a previously established ratio threshold value.

Abstract: A DC/DC converter in which a both-end voltage of each of capacitors can be safely uniformalized while an over current, which is passed through between the capacitors composing the DC/DC converter, is prevented. In a DC/DC converter which includes a plurality of switching elements, a reactor, a low-voltage side capacitor, a high-voltage side capacitor, a charge-discharge capacitor, and a controller which drives and controls the switching elements, the controller performs soft start control in which a duty ratio of at least one of the switching elements is gradually varied from 0% to 100%, and the switching element, in which the soft start control is not performed during the term of the soft start control, is turned off.

Abstract: There is provided a controller for a rotary electric machine drive apparatus capable of reducing data-processing load and amount of memories required for a data processing which calculates a voltage command value of the converter which reduces power loss. A controller calculates the required minimum voltage which is required in the case of performing a maximum torque/current control is calculated; calculates a converter loss coefficient which is a coefficient of a polynomial representing a power loss characteristic of the converter; calculates an inverter loss coefficient which is a coefficient of a polynomial representing a power loss characteristic of the inverter; calculates a sum total of loss coefficients for each order of polynomials; calculates the low loss voltage which the sum total power loss becomes a minimum, based on the sum total loss coefficients for each order; sets to the voltage command value of the converter.

Abstract: A method of controlling a rotary electric machine, which is configured to supply an electric control amount to a power conversion unit, which is configured to convert a DC voltage from a power source into a drive current to the rotary electric machine in accordance with the electric control amount, the method including: using a conversion map, which is used to calculate the electric control amount based on a rotation speed of the rotary electric machine at a particular DC voltage of the rotary electric machine and a required command value; and calculating the electric control amount in accordance with a ratio between the particular DC voltage and the rotation speed of the rotary electric machine in determining the electric control amount in accordance with the conversion map.

Abstract: When a failure of current detection parts occurs while a synchronous machine is operating, the failure of the current detection parts is detected and the operation of the synchronous machine is continued. An open-loop control part for performing control without using the detected current values of the current detection parts and a closed-loop control part for performing control using the detected current values are included, and a failure of the current detection parts is detected while the open-loop control part is operating.

Abstract: An object is to ensure torque accuracy by suppressing the occurrence of low-frequency fold-back noise caused by aliasing, and stable control performance with respect to environmental variations, such as angular errors, power voltage ripples, and so on. A motor control device includes a current detector (10) which, in generating a feedback current value on the basis of the detection result of a three-phase AC current supplied from an inverter (2) to a motor (1), generates a first current detection value based on a first sample timing and a second current detection value based on a second sample timing that is shorter than the first sample timing; a coordinates converter (11) which converts the coordinates of the first current detection value and the second current detection value to q and d axes; and a detection current processor (13) which generates a feedback current value from the coordinate conversion results.

Abstract: A DC/DC converter in which a both-end voltage of each of capacitors can be safely uniformalized while an over current, which is passed through between the capacitors composing the DC/DC converter, is prevented. In a DC/DC converter which includes a plurality of switching elements, a reactor, a low-voltage side capacitor, a high-voltage side capacitor, a charge-discharge capacitor, and a controller which drives and controls the switching elements, the controller performs soft start control in which a duty ratio of at least one of the switching elements is gradually varied from 0% to 100%, and the switching element, in which the soft start control is not performed during the term of the soft start control, is turned off.

Abstract: There is provided a controller for a rotary electric machine drive apparatus capable of reducing data-processing load and amount of memories required for a data processing which calculates a voltage command value of the converter which reduces power loss. A controller calculates the required minimum voltage which is required in the case of performing a maximum torque/current control is calculated; calculates a converter loss coefficient which is a coefficient of a polynomial representing a power loss characteristic of the converter; calculates an inverter loss coefficient which is a coefficient of a polynomial representing a power loss characteristic of the inverter; calculates a sum total of loss coefficients for each order of polynomials; calculates the low loss voltage which the sum total power loss becomes a minimum, based on the sum total loss coefficients for each order; sets to the voltage command value of the converter.

Abstract: An oil-feeding member (100) catches oil picked up by a gear, and is provided with a gutter (132) guiding the oil from one side to the other of a transmission in an axial direction. The gutter (132) has a bottom which is divided into a first bottom portion (141) and a second bottom portion (142). The second bottom portion (142) is provided with an oil-dripping hole (142a, 142b). The first and second bottom portions (141, 142) are configured so that (i) the oil flows over only the first bottom portion (141) toward the other side if an amount of the oil caught by the oil-feeding member (100) is smaller than or equal to a predetermined amount, and that (ii) the oil flows over both of these bottom portions (141, 142) toward the other side if the amount of the oil is greater than the predetermined amount.

Abstract: A synchronous machine control device is provided with a magnet state outputter that estimates a magnetic flux of a permanent magnet forming the magnetic field of a synchronous machine. In a magnet state correction value calculation mode, the magnet state outputter calculates a magnet state correction value. In a magnet state estimation mode, the magnet state outputter obtains, from a magnet state estimation device, a magnetic flux estimation value of the permanent magnet under a given condition of a magnetic flux command and a ?-axis current command and controls a magnet state corrector to correct the magnetic flux estimation value of the permanent magnet obtained by the magnet state estimation device, by use of the magnet state correction value.