POLYESTER AND PRODUCTION METHOD THEREFOR
    3.
    发明公开

    公开(公告)号:US20240174794A1

    公开(公告)日:2024-05-30

    申请号:US18284723

    申请日:2022-03-25

    IPC分类号: C08G63/183 C08G63/78

    摘要: An object of the present invention is to provide a polyester resin that has a high degree of freedom in design and that can have excellent biodegradability even with an increased molecular weight. A polyester of the present invention contains a hydroxy group-containing dicarboxylic acid component and a diol component (excluding a hydroxy group-containing dicarboxylic acid component) as copolymerization components, wherein more than 50 mol % of an aliphatic diol component is contained in 100 mol % of the diol component, the polyester has a number average molecular weight of 3000 or higher, and the polyester has a total hydroxyl value of 1000 eq/ton or higher.

    METHOD FOR PRODUCING POLYCARBONATE
    4.
    发明公开

    公开(公告)号:US20240117113A1

    公开(公告)日:2024-04-11

    申请号:US18510812

    申请日:2023-11-16

    IPC分类号: C08G64/04

    CPC分类号: C08G64/04

    摘要: A method for producing a polycarbonate, including reacting a dihydroxy component with a fluorine-containing carbonate component in a presence of a condensation catalyst to obtain a prepolymer, and heating the prepolymer at a temperature lower than a melting temperature of the prepolymer and subjecting the prepolymer to a solid state polymerization while discharging a by-produced fluorine-containing alcohol outside a system,

    ROTATING ELECTRICAL MACHINE CONTROL DEVICE
    6.
    发明公开

    公开(公告)号:US20230261604A1

    公开(公告)日:2023-08-17

    申请号:US18010575

    申请日:2021-03-26

    IPC分类号: H02P27/08 H02P29/028

    CPC分类号: H02P27/085 H02P29/028

    摘要: In a first control state, it is determined which one of a first failure pattern (FP1) and a second failure pattern (FP2) is a failure pattern (FT), and in a second control state, it is determined which one of a first lower-stage-side failure pattern (LF1) and a second lower-stage-side failure pattern (LF2) is a lower-stage-side failure pattern (LF), and it is determined which one of a set of upper-stage-side arms of a first inverter (11), a set of lower-stage-side arms of the first inverter (12), a set of upper-stage-side arms of a second inverter (12), and a set of lower-stage-side arms of the second inverter (12) is failure-side arms, based on a result of the determination in the first control state and a result of the determination in the second control state.

    ROTATING ELECTRICAL MACHINE CONTROL DEVICE

    公开(公告)号:US20230028358A1

    公开(公告)日:2023-01-26

    申请号:US17782713

    申请日:2020-09-29

    摘要: Two inverters (10) provided at respective both ends of open-end windings (8) are appropriately controlled. As control regions (R) of a rotating electrical machine (80), a first speed region (VR1) and a second speed region (VR2) in which the rotational speed of the rotating electrical machine (80) is higher than in the first speed region (VR1) for the same torque are set, and in the second speed region (VR2), a rotating electrical machine control device (1) controls both inverters (10), a first inverter (11) and a second inverter (12), by mixed pulse width modulation control in which control is performed such that a plurality of pulses with different patterns are outputted during a first period (T1) which is a half cycle of electrical angle, and an inactive state continues during a second period (T2) which is the other half cycle.

    ROTARY ELECTRIC MACHINE, COMPRESSOR, REFRIGERATION DEVICE, AND VEHICLE

    公开(公告)号:US20230028189A1

    公开(公告)日:2023-01-26

    申请号:US17956019

    申请日:2022-09-29

    IPC分类号: H02K1/16 H02K1/17 H02K19/12

    摘要: A rotary electric machine includes a rotor, and a stator facing the rotor with a predetermined gap interposed between the rotor and stator. The stator has a stator core formed in a substantially circular annular shape and provided with an armature slot and a field slot alternately arranged in a circumferential direction, an armature winding housed in the armature slot, and a field winding and a first field magnet housed in the field slot. The armature winding generates a rotating magnetic field to rotate the rotor by being supplied with an alternating current armature current. The field winding generates a field flux by being supplied with a direct current field current. The first field magnet changes a magnetic force by the field flux.

    Continuous bubble removal method and continuous bubble removal apparatus

    公开(公告)号:US10953351B2

    公开(公告)日:2021-03-23

    申请号:US16098828

    申请日:2017-04-27

    IPC分类号: B01D19/00

    摘要: A continuous bubble removal method includes: preparing a main container, a basic pressurization container that connects to the main container and holds a basic operating liquid, and a basic movable portion that is displaceably attached to the basic pressurization container; flowing target liquid through the main container, the liquid including a bubble; and iteratively decreasing and increasing a volume of the bubble by iteratively pressurizing and depressurizing the target liquid from a region via the basic operating liquid by displacing, in a reciprocating manner, the basic movable portion, the region being surrounded by a basic connecting portion of the basic pressurization container that is closer to the main container than the basic supporting portion, wherein an opening area of the basic supporting portion is larger than an opening area of the basic connecting portion.