摘要:
A rotating electric machine is provided, where a generator has an increased capacity and a reduced size achieved by electromagnetically effectively utilizing that parts of a rotor core which are outside the narrowest parts of magnetic poles of the rotor core to permit large field current and suppress an increase in temperature of rotor coils. The rotating electric machine includes a stator constructed by winding armature coils around a stator core (1), and a hollow circular cylindrical rotor. The rotor has at least one pair of magnetic poles (2), non-polar portions (3) between the magnetic poles, and interpolar portions (6) arranged in the non-polar portions. In the non-polar portions (3), a plurality of rotor slots (4) are arranged at predetermined intervals. Field windings are wound in each rotor slot (4). The cross-sectional areas (S) of the rotor slots (4) other than the rotor slots (4a) nearest to the magnetic poles (2) are gradually increased in the direction from the magnetic poles (2) to the interpolar portions (6).
摘要:
A fluid temperature control device, which includes: a main body block having a passage channel formed in a surface thereof; a thermal conducting plate that is provided on the surface of the main body block, and covers the passage channel to form a passage for passing a fluid to be temperature controlled; and temperature control means that carries out heat exchanging (heating/cooling), by way of the thermal conducting plate, with the fluid passing through the passage, in which the passage abutting on the thermal conducting plate connects a fluid inlet and a fluid outlet formed in the main body block, and is a single passage having an approximately constant passage cross-sectional area over its entire length.
摘要:
A manufacturing time of a semiconductor device is shortened by raising and dropping a base temperature of a semiconductor wafer such as silicon wafer to a target temperature at a high speed, a semiconductor device is manufactured with high qualities by making an in-plane temperature distribution of the semiconductor wafer a desired temperature distribution with high accuracy (by uniformizing an in-plane temperature and varying the in-plane temperature distribution for each region), and furthermore, an apparatus with excellent energy efficiency can be simply configured. When the temperature of the semiconductor wafer is controlled to be the target temperature by raising the temperature of the semiconductor wafer, control means performs switching so as to supply a high-temperature circulating liquid at a temperature higher than the target temperature in a high-temperature tank to a channel in a stage, and controls the thermoelectric element in plural zones so that the temperature of the semiconductor wafer coincides with the target temperature and the in-plane temperature distribution of the semiconductor wafer becomes the desired temperature distribution.
摘要:
A diagnosis device for diagnosing loosening of a stator core of a rotary electrical machine. The diagnosis device has: excitation means for vibrating the stator core in the radial direction; vibration detection means for detecting the vibration of the stator core in the radial direction; means for frequency-analyzing an output signal of the vibration detection means that detects vibration generated in the stator core when the stator core is vibrated by the excitation means so as to extract a measurement natural vibration mode of the stator core in a circular ring natural vibration mode; means for estimating a circular ring natural vibration mode of the stator core from shape data of the stator core; and means for determining a clamping state of the stator core by comparing the measurement natural vibration mode and a determination criterion obtained based on the estimated natural vibration mode.
摘要:
A rotor for a rotating electrical machine suppresses demagnetization of permanent magnets without deteriorating motor characteristics, is low-cost, and is highly reliable. The rotor has a plurality of rotor cores (2) that are stacked together, a plurality of permanent magnets (6a, 6b) axially divided by the rotor cores (2) and circumferentially arranged on each of the rotor cores (2), to circumferentially form magnetic irregularities, and a rotor blank (14a) made of nonmagnetic material arranged between those of the rotor cores (2) that are adjacent to each other.
摘要:
An object of the present invention is to provide an internal permanent magnet type rotating electrical machine capable of maintaining compactness and high output and reducing vibration and noise caused by electromagnetic force. The rotating electrical machine of the present invention has an annular stator and a rotor that is arranged inside the stator with an air gap interposed between the stator and the rotor. The stator has a stator iron core provided with a plurality of slots at circumferential intervals and a coil received in each of the slots. The rotor has a rotor iron core, a plurality of permanent magnets embedded in a plurality of magnetic pole forming positions that are set along an outer circumference of the rotor iron core, an iron core section that faces the air gap and is magnetized by the permanent magnets to form a magnetic pole on an air gap fronting face at each of the magnetic pole forming positions, and an axially extending recess formed at a circumferentially central part of the air gap fronting face of each of the iron core sections.
摘要:
The present invention provides a multichip package wherein a plurality of semiconductor chip packages (100) in each of which first electrode pads (16a) provided in a main surface of a semiconductor chip, and first bonding pads (20a) and first central bonding pads (18a) formed in an upper area of the main surface are respectively electrically connected by first redistribution wiring layers (24) in a one-to-one correspondence relationship, and second electrode pads (17b), and second bonding pads (22b) and second central bonding pads (18b) formed in an upper area of the main surface are respectively electrically connected by second redistribution wiring layers (26) in a one-to-one correspondence relationship, are stacked on one another.
摘要:
A semiconductor device that mounts a semiconductor chip in a multilayer substrate, including, inner layer conductive patterns formed in the multilayer substrate; extending conductive portions formed to extend on inner layer conductive patterns in the thickness direction, in the chip mounting area into which the semiconductor chip is mounted; and a cutout portion that is formed by cutting the multilayer substrate, and into which the semiconductor chip is contained, in the chip mounting area. And, in the cutout portion, the underside surface of the semiconductor chip and the inner layer conductive patterns are connected via the extending conductive portions at a same potential.
摘要:
A method is provided for manufacturing a magneto-resistive device. The magneto-resistive device is for reducing the deterioration in the characteristics of the device due to annealing. The magneto-resistive device has a magneto-resistive layer formed on one surface side of a base, and an insulating layer formed of two layers and deposited around the magneto-resistive layer. The layer of the insulating layer closest to the base is made of a metal or semiconductor oxide. This layer extends over end faces of a plurality of layers made of different materials from one another, which make up the magneto-resistive device, and is in contact with the end faces of the plurality of layers with the same materials.
摘要:
A module circuit board for a semiconductor device by a solder reflow process includes a plurality of pads on which the semiconductor device to be mounted, a plurality of terminals formed on a side edge of the board, a resist film covering an area between said pads and said terminal on the board, and a barrier formed between said pads and said terminals.