Method of estimating a rotor position of synchronous motor, method of controlling synchronous motor with no position sensor and a controller of synchronous motor
    21.
    发明授权
    Method of estimating a rotor position of synchronous motor, method of controlling synchronous motor with no position sensor and a controller of synchronous motor 有权
    估算同步电机转子位置的方法,无位置传感器同步电机控制方法和同步电机控制器

    公开(公告)号:US06396229B1

    公开(公告)日:2002-05-28

    申请号:US09654086

    申请日:2000-09-01

    IPC分类号: H02P618

    摘要: In a method of accurately estimating the rotor position of a synchronous motor having saliency from observable quantities, a control system for adjusting an output frequency of an inverter on the basis of a value of axis shift of the synchronous motor to operate the motor synchronously with the output frequency is provided with an induced voltage estimating/axis shift operating unit. Currents resulting from conversion of detection currents on a control axis, voltage commands to be inputted to an inverse converter and a speed command are inputted to the operating unit to estimate an induced voltage of the motor 2 and determine the axis shift from a phase of the estimated induced voltage. By using an electrical constant Lq of inductance, a voltage drop across the inductance is determined by the product of a motor speed command and magnitude of motor current. The voltage drop is a virtual quantity that does not depend on the motor rotor position. A vector of the virtual quantity is so introduced as not to change a phase of the original induced voltage.

    摘要翻译: 在以可观测量准确估计具有显着性的同步电动机的转子位置的方法中,基于同步电动机的轴移动值来调整逆变器的输出频率的控制系统,以与电动机同步地操作电动机 输出频率设置有感应电压估计/轴移动操作单元。 控制轴上的检测电流转换所产生的电流,输入到逆变换器的电压指令和速度指令被输入到运算单元,以估计电动机2的感应电压,并从 估计感应电压。 通过使用电感的电常数Lq,电感上的电压降由电机速度指令和电机电流的大小决定。 电压降是不依赖于电机转子位置的虚拟量。 如此引入虚拟量的矢量不改变原始感应电压的相位。

    Stacked rotor
    23.
    发明授权
    Stacked rotor 失效
    堆叠转子

    公开(公告)号:US4453889A

    公开(公告)日:1984-06-12

    申请号:US407628

    申请日:1982-08-12

    IPC分类号: F01D5/06 F04D29/34

    CPC分类号: F01D5/066

    摘要: A stacked rotor of an axial-flow type machine having a plurality of discs stacked in the axial direction and united into one body by stacking bolts, each of the discs being provided on the periphery thereof with a plurality of rotor blades. The portions of bolt holes in adjacent discs at the juncture of these discs are provided with opposing tapered surfaces. Each stacking bolt is supported by the discs through bolt deformation resisting members having an outer peripheral surface making close contact with the tapered surfaces of the bolt holes and an inner peripheral surface fitting around the stacking bolt.

    摘要翻译: 轴流式机器的堆叠转子,其具有沿轴向堆叠的多个盘,并且通过堆叠螺栓而被结合成一体,每个盘的周边上设置有多个转子叶片。 在这些盘的接合处的相邻盘中的螺栓孔的部分设置有相对的锥形表面。 每个堆叠螺栓通过具有与螺栓孔的锥形表面紧密接触的外周表面的螺栓变形阻力构件和安装在堆叠螺栓周围的内周表面通过盘支撑。

    Hydrogen compressor system
    24.
    发明申请
    Hydrogen compressor system 有权
    氢气压缩机系统

    公开(公告)号:US20070227614A1

    公开(公告)日:2007-10-04

    申请号:US11657488

    申请日:2007-01-25

    IPC分类号: F17C5/06

    CPC分类号: B60S5/02 Y10T137/4807

    摘要: A hydrogen compressor system comprises a hydrogen generating apparatus for generating hydrogen gas to be supplied to a fuel cell vehicle and a multi-stage reciprocating compressor for pressurizing the hydrogen gas generated by the hydrogen generating apparatus. High pressure tanks having maximum use pressure of 20 MPa are connected to middle stages of the multi-stage reciprocating compressor by gas supplying lines via valves. By opening/closing the valves, hydrogen gas in the high pressure tanks can be selectively supplied to the middle stages of the multi-stage reciprocating compressor.

    摘要翻译: 氢压缩机系统包括用于产生供给燃料电池车辆的氢气的氢产生装置和用于对由氢气发生装置产生的氢气加压的多级往复式压缩机。 最高使用压力为20MPa的高压罐通过气体供给管线通过阀连接到多级往复​​式压缩机的中间阶段。 通过打开/关闭阀,高压罐中的氢气可以选择性地供应到多级往复​​式压缩机的中间阶段。

    Turbo compressor and method of operating the turbo compressor
    25.
    发明申请
    Turbo compressor and method of operating the turbo compressor 有权
    涡轮压缩机和操作涡轮压缩机的方法

    公开(公告)号:US20050265819A1

    公开(公告)日:2005-12-01

    申请号:US10524290

    申请日:2002-08-12

    IPC分类号: F04D27/02 F01D1/00

    CPC分类号: F04D27/0246

    摘要: A turbo-compressor being driven by an electric motor has an inlet guide vane and a blow-off valve. The surge limit line of the compressor is amended depending upon seasonal changes of temperature and pressure of a working gas to be sucked into the compressor. Upon the basis of the surge limit line amended, the minimum opening of the inlet guide vale is altered, thereby reducing the driving power or force of the compressor.

    摘要翻译: 由电动机驱动的涡轮压缩机具有入口导向叶片和排出阀。 压缩机的浪涌限制线根据要吸入压缩机的工作气体的温度和压力的季节变化而进行修正。 在浪涌限制线修正的基础上,入口引导阀的最小开度被改变,从而降低了压缩机的驱动力或力。

    Reciprocating compressor
    26.
    发明申请
    Reciprocating compressor 失效
    往复式压缩机

    公开(公告)号:US20050260080A1

    公开(公告)日:2005-11-24

    申请号:US11041424

    申请日:2005-01-25

    CPC分类号: F04B25/00 F04B5/02 F04B27/02

    摘要: A reciprocating compressor includes: a low-pressure stage compression part for compressing low-pressure working gas supplied from a supply source; two high-pressure stage compression parts for compressing the working gas compressed by the low-pressure stage compression part at two stages; and a crank mechanism for driving the low-pressure stage compression part and the high-pressure stage compression parts. The two high-pressure stage compression parts each have a plunger and a cylinder and are arranged on both sides of the crank mechanism in such a way as to extend coaxially opposite to each other. The low-pressure stage compression part has a piston and a cylinder and is located in the middle of the two high-pressure stage compression parts. The crank mechanism, the low-pressure stage compression part, and the two high-pressure stage compression parts are substantially located in the same plane.

    摘要翻译: 往复式压缩机包括:低压级压缩部件,用于压缩从供给源供给的低压工作气体; 两个高压级压缩部件,用于压缩由低压级压缩部件压缩的工作气体两级; 以及用于驱动低压级压缩部和高压级压缩部的曲柄机构。 两个高压级压缩部分各自具有柱塞和气缸,并且布置在曲柄机构的两侧,以便彼此同轴地相对延伸。 低压级压缩部件具有活塞和气缸,位于两个高压级压缩部件的中间。 曲柄机构,低压级压缩部和两个高压级压缩部基本上位于同一平面内。

    Centrifugal compressor and vaned diffuser
    27.
    发明授权
    Centrifugal compressor and vaned diffuser 失效
    离心式压缩机和通风机

    公开(公告)号:US5709531A

    公开(公告)日:1998-01-20

    申请号:US600633

    申请日:1996-02-13

    IPC分类号: F04D29/28 F04D29/44 F04D29/46

    CPC分类号: F04D29/444 F05D2250/52

    摘要: A centrifugal compressor comprises a centrifugal impeller and a vaned diffuser. The diffuser includes a pair of diffuser plates and a plurality of guide vanes arranged between the pair of diffuser plates in a circular cascade manner. The guide vanes are equal in leading-edge radius to each other, but are different in length from each other. At least one short guide vane is arranged between the adjacent long guide vanes. The total number of the guide vanes is more than the number of blades of the impeller. A throat is formed on one but not the other of flow passages between the guide vanes.

    摘要翻译: 离心压缩机包括离心式叶轮和带叶片的扩散器。 扩散器包括一对扩散器板和以圆形级联方式布置在该对扩散器板之间的多个导向叶片。 导向叶片的前缘半径彼此相等,但彼此的长度不同。 在相邻的长导叶之间布置有至少一个简短的导叶。 导向叶片的总数大于叶轮的叶片数量。 在引导叶片之间的流动通道中的一个而不是另一个上形成喉部。

    Turbo compressor and method of controlling the same
    28.
    发明授权
    Turbo compressor and method of controlling the same 失效
    涡轮压缩机及其控制方法

    公开(公告)号:US5312226A

    公开(公告)日:1994-05-17

    申请号:US959090

    申请日:1992-10-09

    摘要: A turbo compressor in which a rotor having impellers is supported by a magnetic bearing is constructed such that a control valve is provided in a thrust balancing line connecting a suction line of the compressor to a balancing chamber formed outside a balancing drum provided at one end side of a rotor. The control valve serves to regulate a rate at which a gas flows through the thrust balancing line, and is adapted to be controlled in relation to a load imposed upon the magnetic thrust bearing.

    摘要翻译: 其中具有叶轮的转子由磁轴承支撑的涡轮压缩机被构造成使得控制阀设置在将压缩机的吸入管线连接到设置在一端侧的平衡鼓外侧的平衡室的推力平衡管线 的转子。 控制阀用于调节气体流过推力平衡线的速率,并且适于相对于施加在磁性推力轴承上的载荷进行控制。

    Mixed flow compressor
    29.
    发明授权
    Mixed flow compressor 失效
    混流式压缩机

    公开(公告)号:US5228832A

    公开(公告)日:1993-07-20

    申请号:US920172

    申请日:1992-07-27

    IPC分类号: F04D17/06 F04D29/44 F04D29/62

    摘要: A compressor is disclosed are disposed in which a diffuser flow passage is curved to a radial direction in the vicinity of an outlet of a mixed-flow impeller, and guide vanes are disposed in which each is of a height (projecting into the diffuser flow passage in a direction substantially transverse to the direction of flow) that is less than the meridional flow passage width such that the minimum inlet radius is larger than a maximum radius at the outlet of the mixed-flow impeller and are arranged in the form of a circular cascade at the curved portion on a flow passage surface of the diffuser plate located on a shroud side. Thus, it is possible to keep uniform the flow within the diffuser and to enhance the performance of the compressor. In addition, the axial length of the compressor may be shortened to thereby make the compressor compact in size.

    摘要翻译: 公开了一种压缩机,其中扩散器流动通道在混合流动叶轮的出口附近向径向弯曲,并且设置导向叶片,其中各个高度(突出到扩散器流动通道中) 在大致横向于流动方向的方向上),其小于子午线通道宽度,使得最小入口半径大于混合流动叶轮出口处的最大半径,并且以圆形 在位于护罩侧的扩散板的流路表面上的弯曲部分处串联。 因此,可以使扩散器内的流量保持均匀,并提高压缩机的性能。 此外,可以缩短压缩机的轴向长度,从而使压缩机的尺寸更小。

    Method of capacity controlling of multistage compressor and apparatus
therefor
    30.
    发明授权
    Method of capacity controlling of multistage compressor and apparatus therefor 失效
    多级压缩机及其设备的容量控制方法

    公开(公告)号:US4770602A

    公开(公告)日:1988-09-13

    申请号:US941639

    申请日:1986-12-15

    IPC分类号: F04D27/00 F04D27/02 F01D17/00

    CPC分类号: F04D27/0246

    摘要: The invention relates to a capacity control method for controlling the capacity of a multistage compressor in response to a flow rate signal by varying the openings of vanes at individual stages. The relationships of the openings of the vanes of the individual stages are made to vary in response to the flow rate signal from the multistage compressor. Thus, when the flow rate of the multistage compressor is far from the anti-surge capacity within the operable range thereof, it is possible to select vane opening relationships which provide the highest efficiency for the multistage compressor. When the flow rate of the multistage compressor drops to either a value near the anti-surge capacity or the inoperable range, on the other hand, it is possible to select vane opening relationships which provide an enlargement of the operating range of the multistage compressor, before the flow rate enters that inoperable range.

    摘要翻译: 本发明涉及一种容量控制方法,用于通过改变各级叶片的开口来响应流量信号来控制多级压缩机的容量。 各级的叶片的开口的关系响应于来自多级压缩机的流量信号而变化。 因此,当多级压缩机的流量远远超过其在可操作范围内的防喘振能力时,可以选择为多级压缩机提供最高效率的叶片开度关系。 另一方面,当多级压缩机的流量下降到接近防喘振能力或不可操作范围的值时,可以选择提供多级压缩机的工作范围的叶片开度关系, 在流量进入不可操作的范围之前。