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公开(公告)号：JP2008306926A
公开(公告)日：2008-12-18
申请号：JP2008233763
申请日：2008-09-11
Applicant: Ebara Corp , Ebara Densan Ltd , 株式会社荏原製作所 , 株式会社荏原電産
Inventor： MCKELVEY TERENCE , MARUI HIDEFUMI , MIYAMOTO MASAHIRO , FURUYA YASUSHI , KATAOKA TADASHI , SATO MOTOYASU , ISHIHARA SEIICHI , OZAWA TAKAHIDE , KINOSHITA NOBORU , TEI SHIYOUKIN
CPC classification number: H02J3/40
Abstract: PROBLEM TO BE SOLVED: To provide a power generating apparatus that stably links the output of an inverter apparatus with a commercial AC power source system during start-up. SOLUTION: A power generating apparatus includes: a linkage switch (S 1 ) for linking the output of an inverter apparatus (5) with a commercial AC power source system; a filter circuit (34) consisting of a reactor and a capacitor connected between the inverter apparatus (5) and the commercial AC power source system; a first voltage detector (32) for detecting output voltage of the inverter apparatus (5); an active filter (145), connected to the first voltage detector (32), which has simulated the characteristic of the filter circuit (34); a second voltage detector (33) for detecting full-wave rectification voltage of the commercial AC power source system side; and a system linkage control unit (118) that closes the linkage switch (S 1 ) when an output of the first voltage detector incorporated via the active filter and an output of the second voltage detector are in agreement. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 解决的问题：提供一种在启动期间将逆变器装置的输出与商用AC电源系统稳定连接的发电装置。 发电装置包括：用于将逆变器装置（5）的输出与商用AC电源系统连接的联动开关（S
1 ）; 连接在逆变器装置（5）和商用交流电源系统之间的电抗器和电容器构成的滤波电路（34） 用于检测逆变器装置（5）的输出电压的第一电压检测器（32）; 连接到第一电压检测器（32）的有源滤波器（145），其已经模拟了滤波器电路（34）的特性; 用于检测商用AC电源系统侧的全波整流电压的第二电压检测器（33）; 以及当通过有源滤波器并入的第一电压检测器的输出和第二电压检测器的输出一致时，闭合联动开关（S 1 ）的系统联动控制单元（118）。 版权所有（C）2009，JPO＆INPIT -
公开(公告)号：JP2008295222A
公开(公告)日：2008-12-04
申请号：JP2007138882
申请日：2007-05-25
Applicant: Ebara Densan Ltd , 株式会社荏原電産
Inventor： MATAKE KOZO
Abstract: PROBLEM TO BE SOLVED: To provide a brushless canned motor device where fluctuations and ripples of a rotor are less apt to occur and rotation of the rotor is less apt to step out. SOLUTION: The brushless canned motor device is provided with the rotor 10, having a plurality of permanent magnets 13, a stator 12 having a plurality of coils U1, U2, V1, V2, W1 and W2, a can 14 which is arranged between the rotor and the stator and stores the rotor; a plurality of first grooves 15 which are formed at an outer peripheral face of the rotor and extend along a rotation axis 3; a plurality of switching elements T1, T2, T3, T4, T5 and T6, which are electrically connected to a plurality of the coils; a switching control part 50 controlling opening/closing timing of a plurality of the switching elements; and a position detecting part 60 detecting a magnetic pole position of the rotor from back electromotive forces generated in the coils. A plurality of the first grooves are disposed at the magnetic pole centers of a plurality of the permanent magnets. The rotor is immersed in a liquid which is introduced inside the can. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：提供一种无转子固定式电动机装置，其中转子的波动和波纹较不易于发生，并且转子的转动不易于脱落。 解决方案：无刷电机装置设置有转子10，转子10具有多个永磁体13，具有多个线圈U1，U2，V1，V2，W1和W2的定子12，罐14 设置在转子和定子之间并存储转子; 多个第一槽15，其形成在转子的外周面并沿旋转轴线3延伸; 电连接到多个线圈的多个开关元件T1，T2，T3，T4，T5和T6; 开关控制部50，控制多个开关元件的开闭定时; 以及位置检测部60，其从线圈中产生的反电动势检测转子的磁极位置。 多个第一凹槽设置在多个永磁体的磁极中心处。 将转子浸入引入罐内的液体中。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2008005611A
公开(公告)日：2008-01-10
申请号：JP2006171865
申请日：2006-06-21
Applicant: Ebara Densan Ltd , 株式会社荏原電産
Inventor： NINOMIYA HIRONORI , KOMATSU TAKAARI , ISHIHARA SEIICHI , ENDO MANABU
IPC: H02M7/00
Abstract: PROBLEM TO BE SOLVED: To provide an inverter device having a three-phase line voltage control type inverter capable of eliminating an output circuit and a filter circuit for one phase, attaining cost reduction by simplifying a circuit structure, and stably supplying three-phase balanced voltage to a three-phase three line system load. SOLUTION: In this inverter device 10 having the three-phase line voltage control type inverter 15 of which a certain phase is grounded, there are provided a device 31 for setting three-phase target phase voltage Vo * on a load side, output voltage adjusting devices 32-35 which output inverter output phase voltage Vinv-u, Vinv-w as a pulse width modulating signal so as to become three-phase target phase voltage Vo * on the load side, a device 50 for converting the inverter output phase voltage to the line voltage in the line to the grounded phase, and a circuit 21 for driving the three-phase line voltage control type inverter. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 解决的问题：提供一种具有能够消除一相的输出电路和滤波电路的三相线路电压控制型逆变器的逆变器装置，通过简化电路结构来实现成本降低，并且稳定地提供三个 相平衡电压到三相三线系统负载。 解决方案：在具有一定相接地的三相线路电压控制型逆变器15的逆变器装置10中，设置有用于将三相目标相电压Vo
* < SP>负载侧的输出电压调整装置32-35，其将逆变器输出相电压Vinv-u，Vinv-w作为脉宽调制信号输出，成为三相目标相电压Vo SP>负载侧的设备50，用于将逆变器输出相电压转换为线路中的线电压到接地相的装置50以及用于驱动三相线路电压控制型逆变器的电路21。 版权所有（C）2008，JPO＆INPIT -
公开(公告)号：JP2007303316A
公开(公告)日：2007-11-22
申请号：JP2006130804
申请日：2006-05-09
Applicant: Ebara Densan Ltd , 株式会社荏原電産
Inventor： KOJIMA YOSHINORI , MATAKE KOZO
IPC: F04D13/02 , F04D29/046 , F04D29/047 , F04D29/048
Abstract: PROBLEM TO BE SOLVED: To provide a motor pump capable of preventing formation of particles from a bearing.
SOLUTION: This motor pump is provided with a pump impeller 2 arranged in a pump casing 1, a motor rotor 3 rotating as one unit with a pump impeller 2, a motor stator 4 arranged in a radial direction outside of the motor rotor 3, radial dynamic pressure bearings 9, 18 rotatably supporting the pump impeller 2 and the motor rotor 3, a first permanent magnet 13 arranged concentrically with the pump impeller 2, a second permanent magnet 14 arranged on the pump casing 1 to oppose to the first permanent magnet 13. The first permanent magnet 13 and the second permanent magnet 14 are arranged to mutually repulse.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：提供一种能够防止轴承形成颗粒的电机泵。 解决方案：该电动泵设置有配置在泵壳体1内的泵叶轮2，与泵叶轮2一体旋转的电动机转子3，沿电动机转子外侧的径向配置的电动机定子4 3，可旋转地支撑泵叶轮2和马达转子3的径向动压轴承9,18，与泵叶轮2同心设置的第一永磁体13，布置在泵壳体1上以与第一 永磁体13.第一永久磁铁13和第二永久磁铁14相互排斥。 版权所有（C）2008，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2007288901A
公开(公告)日：2007-11-01
申请号：JP2006112516
申请日：2006-04-14
Applicant: Ebara Densan Ltd , 株式会社荏原電産
Inventor： KOJIMA YOSHINORI , MIYASHITA NOBUHITO , MATAKE KOZO
Abstract: PROBLEM TO BE SOLVED: To provide a double-spindle synchronous motor which allows armatures to be arranged at suitable positions according to the number of poles of permanent magnets, and can provide sure synchronous rotation.
SOLUTION: This double-spindle synchronous motor comprises: two pieces of rotors 2a, 2b which are arranged in parallel with each other; the permanent magnets 5a, 5b which are attached to external peripheral surfaces of the rotors 2a, 2b; and a plurality of the armatures 3 which are arranged at circumferences of the permanent magnets 5a, 5b with prescribed air gaps. The two pieces of rotors 2a, 2b are arranged so that the adjacent two permanent magnets among the permanent magnets form a magnetic coupling. The armatures 3 are aligned so that a line connecting their tips forms a substantially oval shape. M pieces (M=(N-2)×3/2) of the armatures with respect to the number of poles N (N=4 or larger even numbers) of the permanent magnets arranged at each rotor are arranged around each rotor at D degree (D=360/N×2/3) pitches. The armatures 3 are equally aligned from long radius apexes P, Q of the oval shape.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：提供一种双轴同步电动机，其允许电枢根据永磁体的极数被布置在适当的位置，并且可以提供确定的同步旋转。 解决方案：该双主轴同步电动机包括：彼此平行布置的两个转子2a，2b; 安装在转子2a，2b的外周面的永久磁铁5a，5b; 以及以规定的气隙配置在永久磁铁5a，5b的周围的多个电枢3。 两个转子2a，2b被布置成使得永磁体中相邻的两个永磁体形成磁耦合。 电枢3被对准，使得连接其尖端的线形成大致椭圆形。 配置在每个转子上的永磁体的数量N（N = 4或更大的偶数）的电枢的M个（M =（N-2）×3/2）布置在每个转子周围的D 度（D = 360 / N×2/3）间距。 电枢3与椭圆形的长半径顶点P，Q同等对齐。 版权所有（C）2008，JPO＆INPIT
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49.发明专利
公开(公告)号：JP2006161337A
公开(公告)日：2006-06-22
申请号：JP2004351872
申请日：2004-12-03
Applicant: Ebara Corp , Ebara Densan Ltd , 株式会社荏原製作所 , 株式会社荏原電産
Inventor： KANEDA KAZUHIRO , KOMATSU TAKAHIDE , NAKAJIMA KAORU , TEJIMA TOMOJI
Abstract: PROBLEM TO BE SOLVED: To provide a method for detecting an abnormality in a pressure tank, which enables the accurate detection of the abnormality in the pressure tank, such as a decrease in sealing pressure, and a water supply system which has the function of detecting the abnormality in the pressure tank. SOLUTION: In the method for detecting the abnormality in the pressure tank, a pump stop time from the stop of a pump 14 of the water supply system 10 to the restart of the pump 14 is measured; the pump stop time is compared with a predetermined reference time; the result of this comparison is recorded as the result of the detection of the abnormality when the pump stop time is shorter than the reference time; and it is determined that the abnormality occurs in the pressure tank 36 when the result of the detection of the abnormality is recorded a plurality of times. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种用于检测压力罐异常的方法，其能够精确地检测压力罐中的异常，例如密封压力的降低，以及具有 检测压力罐异常的功能。 解决方案：在用于检测压力罐异常的方法中，测量从供水系统10的泵14的停止到泵14的重启的泵停止时间; 将泵停止时间与预定的参考时间进行比较; 作为比较结果，作为在停泵时间比基准时间短的情况下的异常检测的结果， 并且当多次记录异常的检测结果时，确定在压力罐36中发生异常。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP3777490B2
公开(公告)日：2006-05-24
申请号：JP2392598
申请日：1998-01-21
IPC: F04C2/16 , F04D3/02 , F04C15/00 , F04D7/04 , F04D13/06 , F04D15/00 , F04D29/04 , F04D29/048 , F17D1/14 , H02K7/09 , H02K7/14 , H02K29/00 , H02P6/22
CPC classification number: F04D29/048 , F04D3/02 , F04D13/0646 , F04D15/0066
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