Abstract: Provided are a power converter for a vehicle generator-motor and a method for controlling a vehicle generator-motor, which is used for a field winding type vehicle generator-motor configured to perform control in accordance with an external operating command in which a power converter is connected to a rotating electrical machine including a field winding and an armature winding. When the generator-motor shifts from a driving state to another operating mode, a method of stopping a driving mode is switched in accordance with an operating mode to be shifted, to thereby shift the operating mode promptly without generating an unintended power generation, an excess power generation, and an excess torque fluctuation.

Abstract: A control section is configured to, when it is detected that a voltage of a B-terminal of a power generator has exceeded a first predetermined voltage value, turn on all switching elements of a negative arm of a bridge circuit connected to one set of armature windings and turn off all switching elements of a positive arm, and reduce a field current flowing in a field winding. The control section is configured to thereafter turn off all the turned-on switching elements when a predetermined condition is satisfied.

Abstract: A continuously variable transmission includes a variator, a sub-transmission mechanism, target value setting means configured to set a speed ratio corresponding to a select gear position as a target value of a through speed ratio which is an overall speed ratio of the variator and the sub-transmission mechanism, shift control means configured to perform a variator shift of downshifting the variator so that the through speed ratio reaches the target value and a coordinated shift of upshifting the variator to maintain the through speed ratio while downshifting the sub-transmission mechanism immediately after the variator is downshifted, and torque increasing means configured to increase a torque input to the continuously variable transmission from the power source more than a torque before the determination of the downshift instruction during the coordinated shift.

Abstract: The present invention has an aspect to provide a mounted structure of which heat-resistant fatigue characteristic is improved. A mounted structure is provided with a substrate having a substrate electrode, an electronic component having a component electrode, and a bonding part bonding the substrate electrode and the component electrode, wherein the bonding part is constituted by a solder reinforcing part and a solder bonding part, the solder reinforcing part is a side vicinity part of the bonding part, and is constituted by In of 3 wt % or more and 8 wt % or less and Sn of 88 wt % or more, and the solder bonding part is constituted by a Sn—Bi system solder material and In of 0 wt % or more and less than 3 wt %.

Abstract: A mounting structure includes a BGA including a BGA electrode, a circuit board including a circuit board electrode, and a solder joining portion which is arranged on the circuit board electrode and is connected to the BGA electrode. The solder joining portion is formed of Cu having a content ratio in a range from 0.6 mass % to 1.2 mass %, inclusive, Ag having a content ratio in a range from 3.0 mass % to 4.0 mass %, inclusive, Bi having a content ratio in a range from 0 mass % to 1.0 mass %, inclusive, In, and Sn. A range of the content ratio of In is different according to the content ratio of Cu.

Abstract: A control unit comprises determining unit for determining whether or not a predetermined elapsed time condition is established after a shift has been performed to a specific gear position reached by engaging a specific frictional engagement element of a stepped transmission mechanism, and restricting unit for prohibiting the stepped transmission mechanism from performing a shift back to the specific gear position while allowing a continuously variable transmission mechanism to perform shifts so that an automatic transmission is controlled to a target speed ratio until the determining unit determines that the predetermined elapsed time condition is established.

Abstract: A field winding rotating electrical machine includes a field current detection section, a field current control section configured to calculate a duty ratio of a current supplied to the field winding based on a field current detection value, to thereby control current supply to the field winding by using a switching element, and a field current correction section configured to estimate a time point when the field current becomes 0 A based on a control state of the field current, to specify the field current detection value at the estimated time point to be a field current correction value, and to subtract the field current correction value from the field current detection value, to thereby calculate the corrected field current value. The field current control section controls the current supply based on the corrected field current value calculated by the field current correction section.

Abstract: Solder material used in soldering of an Au electrode including Ni plating containing P includes Ag satisfying 0.3?[Ag]?4.0, Bi satisfying 0?[Bi]?1.0, and Cu satisfying 0<[Cu]?1.2, where contents (mass %) of Ag, Bi, Cu and In in the solder material are denoted by [Ag], [Bi], [Cu], and [In], respectively. The solder material includes In in a range of 6.0?[In]?6.8 when [Cu] falls within a range of 0<[Cu]<0.5, In in a range of 5.2+(6?(1.55×[Cu]+4.428))?[In]?6.8 when [Cu] falls within a range of 0.5?[Cu]?1.0, In in a range of 5.2?[In]?6.8 when [Cu] falls within a range of 1.0<[Cu]?1.2. A balance includes only not less than 87 mass % of Sn.

Abstract: Solder material used in soldering of an Au electrode including Ni plating containing P includes Ag satisfying 0.3?[Ag]?4.0, Bi satisfying 0?[Bi]?1.0, and Cu satisfying 0?[Cu]?1.2, where contents (mass %) of Ag, Bi, Cu and In in the solder material are denoted by [Ag], [Bi], [Cu], and [In], respectively. The solder material includes In in a range of 6.0?[In]?6.8 when [Cu] falls within a range of 0<[Cu]<0.5, In in a range of 5.2+(6?(1.55×[Cu]+4.428))?[In]?6.8 when [Cu] falls within a range of 0.5?[Cu]?1.0, In in a range of 5.2?[In]?6.8 when [Cu] falls within a range of 1.0<[Cu]?1.2. A balance includes only not less than 87 mass % of Sn.

Abstract: A continuously variable transmission includes a variator, a sub-transmission mechanism, target value setting means configured to set a speed ratio corresponding to a select gear position as a target value of a through speed ratio which is an overall speed ratio of the variator and the sub-transmission mechanism, shift control means configured to perform a variator shift of downshifting the variator so that the through speed ratio reaches the target value and a coordinated shift of upshifting the variator to maintain the through speed ratio while downshifting the sub-transmission mechanism immediately after the variator is downshifted, and torque increasing means configured to increase a torque input to the continuously variable transmission from the power source more than a torque before the determination of the downshift instruction during the coordinated shift.

Abstract: Provided are a low-cost control device and the like for a vehicle generator-motor for minimizing the number of current sensors and the like, and estimating an output torque and a current consumption during drive of the generator-motor. The output torque and the current consumption during the drive of the generator-motor are estimated based on a field current, an rpm, a DC voltage, and a phase of an AC voltage to be supplied of the generator-motor, without providing a current sensor for detecting an input current from a power supply to an inverter device of the generator-motor, and a current sensor for detecting an output current from the inverter device to an armature winding of a rotary electric machine.

Abstract: Solder material used in soldering of an Au electrode including Ni plating containing P includes Ag satisfying 0.3?[Ag]?4.0, Bi satisfying 0?[Bi]?1.0, and Cu satisfying 0?[Cu]?1.2, where contents (mass %) of Ag, Bi, Cu and In in the solder material are denoted by [Ag], [Bi], [Cu], and [In], respectively. The solder material includes In in a range of 6.0?[In]?6.8 when [Cu] falls within a range of 0<[Cu]<0.5, In in a range of 5.2+(6?(1.55×[Cu]+4.428))?[In]?6.8 when [Cu] falls within a range of 0.5?[Cu]?1.0, In in a range of 5.2?[In]?6.8 when [Cu] falls within a range of 1.0<[Cu]?1.2. A balance includes only not less than 87 mass % of Sn.

Abstract: A field current limiting section includes a field current limitation instructing section for, when a field current limitation determining section determines that a determination value has reached a predetermined determination threshold value, generating a field current limiting instruction to a field current control section so as to limit field current to be equal to or smaller than a predetermined permissible value during a predetermined field current limitation time Tlim. A field current limitation releasing section outputs a field current limitation releasing instruction to the field current limiting section so as to release limitation of the field current during a predetermined field current limitation release time TC. When having received the field current limitation releasing instruction from the field current limitation releasing section, the field current limiting section releases limitation of the field current during the predetermined field current limitation release time.

Abstract: A field winding rotating electrical machine includes a field current detection section, a field current control section configured to calculate a duty ratio of a current supplied to the field winding based on a field current detection value, to thereby control current supply to the field winding by using a switching element, and a field current correction section configured to estimate a time point when the field current becomes 0 A based on a control state of the field current, to specify the field current detection value at the estimated time point to be a field current correction value, and to subtract the field current correction value from the field current detection value, to thereby calculate the corrected field current value. The field current control section controls the current supply based on the corrected field current value calculated by the field current correction section.

Abstract: Provided are a power converter for a vehicle generator-motor and a method for controlling a vehicle generator-motor, which is used for a field winding type vehicle generator-motor configured to perform control in accordance with an external operating command in which a power converter is connected to a rotating electrical machine including a field winding and an armature winding. When the generator-motor shifts from a driving state to another operating mode, a method of stopping a driving mode is switched in accordance with an operating mode to be shifted, to thereby shift the operating mode promptly without generating an unintended power generation, an excess power generation, and an excess torque fluctuation.

Abstract: A transmission controller executes synchronization shift of shifting a variator in a direction opposite to a speed ratio change direction of a sub transmission mechanism when shifting a sub transmission mechanism. When a gear position of the sub transmission mechanism is at the second gear position and an output increase request of a power source is made, the transmission controller prohibits the synchronization shift and shifts only the sub transmission mechanism from a second gear position to a first gear position.

Abstract: When a cleaning operation is performed, a controller of an image forming apparatus controls to emit a light beam from a light emitting window so as to form a stripe image in a predetermined position of an intermediate transfer member so as to form a image defect part in the stripe image, which occurs when a cleaning member moving in a reciprocating manner in a main scanning direction along the light emitting window blocks the light beam. In addition, the controller detects the image defect part by a density detecting member. When a predetermined number of image defect parts are not formed in the predetermined position in the period from start to end of the cleaning operation, the controller determines that the cleaning member is within the scanning range of the light beam.

Abstract: A control section is configured to, when it is detected that a voltage of a B-terminal of a power generator has exceeded a first predetermined voltage value, turn on all switching elements of a negative arm of a bridge circuit connected to one set of armature windings and turn off all switching elements of a positive arm, and reduce a field current flowing in a field winding. The control section is configured to thereafter turn off all the turned-on switching elements when a predetermined condition is satisfied.

Abstract: Provided are a low-cost control device and the like for a vehicle generator-motor for minimizing the number of current sensors and the like, and estimating an output torque and a current consumption during drive of the generator-motor. The output torque and the current consumption during the drive of the generator-motor are estimated based on a field current, an rpm, a DC voltage, and a phase of an AC voltage to be supplied of the generator-motor, without providing a current sensor for detecting an input current from a power supply to an inverter device of the generator-motor, and a current sensor for detecting an output current from the inverter device to an armature winding of a rotary electric machine.

Abstract: A field winding type rotary electric machine includes: a controller; a field current integration portion provided in the controller to calculate an integral value by integrating an excessive field current exceeding a field current threshold; a field current limiting portion provided in the controller and carrying out limiting processing to limit a field current to or below a predetermined value when the integral value reaches an integral value threshold defined as a reference value at or above which the field current is limited; a controller power supply connection switch switched ON and OFF for power feeding to the controller; a controller power supply connection determination portion switching ON and OFF the controller power supply connection switch; and a power feeding ON state maintaining portion maintaining an ON state of the power feeding to the controller from start to end of the limiting processing by the field current limiting portion.