公开(公告)号：WO1993006645A1

公开(公告)日：1993-04-01

申请号：PCT/US1992007839

申请日：1992-09-16

Applicant: REM TECHNOLOGIES, INC.

Inventor： REM TECHNOLOGIES, INC. ,  PALMA, Rodolfo ,  CESTRA, John, J.

IPC: H02K01/26

CPC classification number: H02K1/185 ,  H02K9/22 ,  H02K19/20

Abstract: A support and positioning structure for a stator assembly (4) of an inductor type dynamoelectric machine (2) is disclosed. The stator assembly (4) includes a plurality of stationary C-shaped armature elements (26) circumferentially located about a central longitudinal axis (6) and supported by end portions (14). The C-shaped armature elements (26) include armature windings (24) on a base portion extending parallel to the longitudinal axis (6) and legs (34) extending from each end in a radially inward direction. The support structure includes a nonmagnetic ring shaped member (9) sized to be insertable over the bases of the circumferentially spaced C-shaped armature elements (26). The bases are in contact with an inner portion (29) of the ring shaped member (9) to thereby position the C-shaped armature elements (26).

公开(公告)号：WO1994014225A1

公开(公告)日：1994-06-23

申请号：PCT/US1993005844

申请日：1993-06-16

Applicant: REM TECHNOLOGIES, INC.

Inventor： REM TECHNOLOGIES, INC. ,  PALMA, Rodolfo ,  MILLER, William, H.

IPC: H02K21/12

CPC classification number: H02K1/2713 ,  H02K21/20

Abstract: A rotor (14) for a dynamoelectric machine (10), without windings and rotatable about a central longitudinal axis (18), having an axially extending rotatable body and a toroidal magnet (58) coaxially mounted on the body is constructed to provide magnetic excitation for the rotor (14). The rotatable body contains a first set of circumferentially spaced axially extending salient poles (28) with circumferentially spaced recesses (26) therebetween and a second set of similar poles (28) at an opposite axial location. The toroidal magnet (58) is coaxially mounted on the body between the first and second set of salient poles (28). A second toroidal magnet (158) may also be mounted on the body and a magnetic spacer (161) placed in between both toroidal magnets (58, 158).

Abstract translation: 用于电动机（10）的转子（14），其没有绕组并且可围绕中心纵向轴线（18）旋转，具有轴向延伸的可旋转主体和同轴地安装在主体上的环形磁体（58），以提供磁激励 用于转子（14）。 可旋转体包含第一组周向间隔开的轴向延伸的凸极（28），其间具有周向间隔开的凹部（26），并且在相对的轴向位置处具有第二组相似的极（28）。 环形磁体（58）同轴地安装在第一组和第二组凸极（28）之间的主体上。 第二环形磁体（158）也可以安装在主体上，以及放置在两个环形磁体（58,158）之间的磁性间隔件（161）。

公开(公告)号：WO1993009588A1

公开(公告)日：1993-05-13

申请号：PCT/US1992008666

申请日：1992-10-09

Applicant: REM TECHNOLOGIES, INC.

Inventor： REM TECHNOLOGIES, INC. ,  PALMA, Rodolfo

IPC: H02K03/46

CPC classification number: H02K3/524 ,  H02K5/225 ,  H02K19/20

Abstract: A system for supporting conductors (30) in a dynamoelectric machine (2) having a stator assembly (4) with a plurality of stationary armature elements (26) spaced about a circumference positioned radially about a central longitudinal axis (6), where each armature element (28) includes an armature winding (24) on a base portion and a leg extending from each of the base portions in a radially inward direction, includes a spacer (60) for supporting one or more electrical conductors (30) and for insulating the one or more conductors (30) for an armature element (26). The spacer (60) is mountable on the armature element (26) and may comprise one or more grooves (62) for supporting one or more interconnecting bars (30) which are capable of connecting the armature windings (24) of two or more armature elements (26). The spacers (60) may be fastened to the stator assembly (4) and allow the stator assembly (4) to be equipped with conductors (30) which may be oriented in a pattern which minimizes conductor length and minimizes energy losses.

公开(公告)号：WO1995006351A1

公开(公告)日：1995-03-02

申请号：PCT/US1994009254

申请日：1994-08-16

Applicant: REM TECHNOLOGIES, INC.

Inventor： REM TECHNOLOGIES, INC. ,  CHEN, Keming

IPC: H02H07/122

CPC classification number: H02M1/34 ,  H02M1/4216 ,  H02M3/158 ,  H02M7/2173 ,  H02M2001/342 ,  H03K17/08142 ,  H03K17/08148 ,  Y02B70/126 ,  Y02B70/1491

Abstract: A snubber network (32) for a power conversion circuit (30) operated in discontinuous conduction mode includes a snubber capacitor (C), an isolation diode (D2) and an active reset circuit (S2, L, D3). The snubber capacitor (C) connected to the output of the isolation diode (D2), are connected across a main switch (S1) of the power conversion circuit (30). The active reset circuit (S2, L, D3), connected between the input and output of the isolation diode (D2) and the input and output of a boost diode (D1), is responsive to a reset signal for resetting the snubber capacitor within the normal boost cycle of the power conversion circuit (30). Upon receipt of the reset signal, energy in the snubber capacitor (C) is recovered and transferred to the output of the power conversion circuit (30) with turn-off of the main switch (S1). Soft switching is provided for both the main switch (S1) and a snubber switch (S2) within the active reset circuit (S2, L, D3).

Abstract translation: 用于以不连续导通模式操作的功率转换电路（30）的缓冲器网络（32）包括缓冲电容器（C），隔离二极管（D2）和有源复位电路（S2，L，D3）。 连接到隔离二极管（D2）的输出的缓冲电容器（C）跨越电力转换电路（30）的主开关（S1）连接。 连接在隔离二极管（D2）的输入和输出与升压二极管（D1）的输入和输出之间的有源复位电路（S2，L，D3）响应用于复位缓冲电容器的复位信号 电源转换电路（30）的正常升压周期。 在接收到复位信号时，缓冲电容器（C）中的能量被恢复并且通过主开关（S1）的关断传送到电力转换电路（30）的输出端。 在主动复位电路（S2，L，D3）内为主开关（S1）和缓冲开关（S2）提供软开关。

公开(公告)号：WO1992005437A1

公开(公告)日：1992-04-02

申请号：PCT/US1991004323

申请日：1991-06-17

Applicant: REM TECHNOLOGIES, INC.

Inventor： REM TECHNOLOGIES, INC. ,  MILLER, William, H. ,  BROOK, Warren, R.

IPC: G01N27/82

CPC classification number: G01H13/00 ,  G01N29/12 ,  G01N2291/2693

Abstract: The presence, size and location of a crack in a shaft (42) is determined by comparing actual measured natural frequencies of the operating shaft system with the results of an analytical model (62). From a multi-station analytical model (62) of an uncracked operating shaft system, natural frequencies and associated mode shapes are derived. A suspected axial location of a crack (C) is defined, and a natural frequency of interest is selected which has an associated mode shape exhibiting significant localized bending at the suspected axial location of the crack (C) and at a site of response measurement (R). The analytical model (62) is modified to include an asymmetric crack. A comparison of actual natural frequency(s) in the region near the natural frequency of interest with frequency values predicted by the modified model is employed to determine the presence and severity of a crack in the shaft (42).

Abstract translation: 通过将操作轴系统的实际测量固有频率与分析模型（62）的结果进行比较来确定轴（42）中裂纹的存在，尺寸和位置。 从未破裂的操作轴系统的多工位分析模型（62）得出固有频率和相关模式形状。 确定裂纹（C）的可疑轴向位置，并且选择感兴趣的固有频率，其具有在裂纹（C）的可疑轴向位置处和在响应测量位置处显示出显着局部弯曲的相关模式形状（ R）。 分析模型（62）被修改为包括不对称裂纹。 采用通过改进模型预测的频率值附近的感兴趣自然频率附近的实际固有频率的比较来确定轴（42）中裂纹的存在和严重程度。

公开(公告)号：WO1990001824A1

公开(公告)日：1990-02-22

申请号：PCT/US1989001511

申请日：1989-04-11

Applicant: REM TECHNOLOGIES, INC.

Inventor： REM TECHNOLOGIES, INC. ,  MILLER, William, H. ,  GRANT, James, J.

IPC: H02K03/04

CPC classification number: H02K19/20

Abstract: A spool-like stator support structure for an inductor type dynamoelectric machine incorporates stamped, annular end plates. Each end plate has a plurality of spaced-apart recessed landings along its outer edge and, preferably, a plurality of axially outward extending tabs which cooperate to precisely position a plurality of circumferentially distributed generally U-shaped armature elements mounted thereon. The end plate is also provided with a rabbet or press fit along its radially inner edge for mating with an end of the central cylindrical tube of the spool-like support. Cooling ports also distributed about the inner edge of the laminated end plate provide for ventilation of the exterior of said central tube. The end plate can be assembled from a grouping of standardized stampings or from a single stamping.

公开(公告)号：WO1992005438A1

公开(公告)日：1992-04-02

申请号：PCT/US1991004324

申请日：1991-06-17

Applicant: REM TECHNOLOGIES, INC.

Inventor： REM TECHNOLOGIES, INC. ,  BROOK, Warren, R. ,  MILLER, William, H.

IPC: G01N27/82

CPC classification number: G01N29/12 ,  G01H13/00 ,  G01N2291/2693

Abstract: The presence, size and location of a crack in a shaft (42) is determined by comparing actual measured natural frequencies of the shaft system with the results of a multistation analytical model (62). A suspected axial location of a crack (C) is defined, and a natural frequency of interest is selected. The analytical model (62) is modified to include a representation of an asymmetric crack. The actual shaft system is subjected to an excitation force, and vibrational response measurements are taken. A fast Fourier transform analyzer (78) derives a frequency response function which indicates the actual natural frequencies of the shaft system. A comparison of actual natural frequency(ies) with frequency values predicted by the modified model is employed to determine the presence and severity of a crack in the shaft (42).

Abstract translation: 轴（42）中的裂纹的存在，尺寸和位置通过将轴系的实际测量的固有频率与多段分析模型（62）的结果进行比较来确定。 定义裂纹的可疑轴向位置（C），并选择感兴趣的固有频率。 分析模型（62）被修改为包括不对称裂纹的表示。 实际轴系受到激励力，并进行振动响应测量。 快速傅里叶变换分析仪（78）得出了一个频率响应函数，表明了轴系的实际固有频率。 采用修正模型预测的实际固有频率与频率值的比较来确定轴中裂纹的存在和严重程度（42）。

公开(公告)号：WO1991003859A1

公开(公告)日：1991-03-21

申请号：PCT/US1990003741

申请日：1990-07-05

Applicant: REM TECHNOLOGIES, INC.

Inventor： REM TECHNOLOGIES, INC. ,  MILLER, William, H. ,  BROOK, Warren, R. ,  GRANT, James, J.

IPC: H02K21/20

CPC classification number: H02K19/20

Abstract: A homopolar, transverse pole rotor (14) having a central cylindrical body (24) with a set of circumferentially spaced, axially extending salient poles (28) at each end thereof, is constructed to reduce windage losses. Integral shrouds (29, 31) are placed on either side of each set of salient poles and a relief is machined into the outer surface of each shroud to form an accentuated pole tip (64) which ensures magnetic centering of the rotor. To further minimize windage losses the diameter of the central cylindrical body (24) can be reduced and non-magnetic material can be secured within interpole recesses. Mechanical fasteners (66), dove tails (72) or tensioned circumferential banding (82) can be used to secure the non-magnetic interpole pieces to the rotor.

公开(公告)号：WO1991003094A1

公开(公告)日：1991-03-07

申请号：PCT/US1990003514

申请日：1990-06-25

Applicant: REM TECHNOLOGIES, INC.

Inventor： REM TECHNOLOGIES, INC. ,  WINTERMUTE, Pamela, B.

IPC: H02K05/00

CPC classification number: H02K1/185 ,  H02K1/12 ,  H02K2201/06

Abstract: An arrangement for mounting a stator assembly (12) of a dynamoelectric machine (10) in a housing (16) employs a pluraltiy of circumferentially distributed mounting supports (56) on the interior of the housing (16) cooperating with pairs of axially aligned radial extensions (54) of the stator assembly (12). Opposed, axially inner faces (62) of paired radial extensions (54) sandwich axially outer end faces (60) of the associated mounting supports (56). Threaded fasteners (52) secure the radial extensions (54) to the end faces (60) of the mounting supports (56). Oversized mounting holes (58) in the radial extensions (54) and shims (74) can be used to allow for lateral and axial adjustement, respectively, of the mounted stator assembly (12).

公开(公告)号：WO1994029885A1

公开(公告)日：1994-12-22

申请号：PCT/US1994006386

申请日：1994-06-07

Applicant: REM TECHNOLOGIES, INC.

Inventor： REM TECHNOLOGIES, INC. ,  PALMA, Rodolfo

IPC: H01B05/02

CPC classification number: H02G5/005 ,  H02M7/003

Abstract: A low inductance bus bar arrangement suitable for industrial voltage levels, and for power applications contains two or more elongate electrical conducting bars (3-6) having rounded edges. A strip of dieletric insulating material (7) is located between two of the elongate electrical conducting bars. The conducting bars are oriented in substantially parallel relationship to one another with the dielectric insulating material having a height of the cross section thereof substantially greater than the height of the cross section of the conducting bars. The bus bar arrangement also provides low inductance to the connecting devices.

Abstract translation: 适用于工业电压等级的低电感母线配置和功率应用包含两个或多个具有圆形边缘的细长导电棒（3-6）。 一条防腐绝缘材料（7）位于两根细长导电棒之间。 导电棒的取向基本上彼此平行，介电绝缘材料的横截面高度基本上大于导电条横截面的高度。 汇流排布置也为连接装置提供低电感。