公开(公告)号：US20200208521A1

公开(公告)日：2020-07-02

申请号：US16729196

申请日：2019-12-27

Applicant: ARTEMIS INTELLIGENT POWER LIMITED

Inventor： Niall CALDWELL ,  Daniel ABRAHAMS ,  Andrew LATHAM

IPC: F01B1/06 ,  F04B1/06

Abstract: An electronically commutated hydraulic machine is coupled to a drivetrain. Working chambers of the hydraulic machine are connected to low and high pressure manifold through electronically controlled valves. The phase of opening and closing of the valves has a default. In order to avoid cycle failure due to acceleration events, for example due to backlash in the drivetrain, the phase of opening or closing of the electronically controlled valves is temporarily advanced or retarded from the default timing.

公开(公告)号：US20240068494A1

公开(公告)日：2024-02-29

申请号：US18259710

申请日：2021-12-30

Applicant: ARTEMIS INTELLIGENT POWER LIMITED

Inventor： Alexis DOLE ,  Matthew GREEN ,  John HUTCHESON ,  Daniel ABRAHAMS ,  Niall CALDWELL

IPC: B66F9/22 ,  F15B11/16 ,  F15B11/17 ,  F15B21/08 ,  F15B21/14

CPC classification number: B66F9/22 ,  F15B11/165 ,  F15B11/17 ,  F15B21/082 ,  F15B21/14 ,  F15B2211/2656 ,  F15B2211/41518

Abstract: The present invention provides a controller for hydraulic apparatus (100). The controller is configured to determine (310) that an energy return criteria has been met by movement of a first movement component of a first hydraulic actuator. In response thereto, the controller is further configured to select (320) at least one among a plurality of energy control strategies based on at least one operational characteristic of the hydraulic apparatus, and to control (330) the hydraulic apparatus to implement the energy control strategy during movement of the first movable component in such a way as to meet the energy return criteria. The plurality of energy control strategies comprises a first energy control strategy and a second energy control strategy. The at least one operational characteristic of the hydraulic apparatus comprises an indication of an expected energy recovery of one or more of the energy control strategies. The first energy control strategy comprises transferring energy from the first hydraulic actuator, via a hydraulic machine, to an energy consumer in torque connection with the hydraulic machine. The second energy control strategy comprises transferring energy from the first hydraulic actuator to a low-pressure reservoir of hydraulic fluid in the hydraulic circuit.

公开(公告)号：US20190226959A1

公开(公告)日：2019-07-25

申请号：US16253730

申请日：2019-01-22

Applicant: ARTEMIS INTELLIGENT POWER LIMITED

Inventor： William Hugh Salvin RAMPEN ,  Niall CALDWELL ,  Peter MCCURRY

IPC: G01N3/36 ,  F15B15/18 ,  G01M5/00

Abstract: An object is displaced alternately in opposite directions, using a hydraulic power unit having a rotatable body which includes the shaft of a hydraulic machine having electronically commutated valves. A motor drives the rotatable body. The hydraulic machine drives an actuator to displace the object in use. Energy is transformed from rotational kinetic energy of the rotatable body to elastic strain energy or elastic strain and gravitational potential energy of the object during a pumping phase and rotation of the rotatable body slows, but does not change direction. The potential energy then drives the hydraulic machine to motor and the rotatable shaft speeds up again, storing rotational kinetic energy. The displacement of the hydraulic machine is controlled throughout to match a time varying demand taking into account the varying speed of rotation of the rotatable shaft. The motor provides energy to compensate for losses and the process can repeat cyclically.

公开(公告)号：US20160208898A1

公开(公告)日：2016-07-21

申请号：US15022397

申请日：2014-02-25

Applicant: ARTEMIS INTELLIGENT POWER LIMITED

Inventor： Niall CALDWELL ,  Daniel ABRAHAMS ,  Daniil DUMNOV

IPC: F16H39/16 ,  F04B1/06 ,  F04B1/053 ,  F03C1/053 ,  F03C1/40

CPC classification number: F16H39/16 ,  F03C1/0447 ,  F03C1/045 ,  F03C1/053 ,  F03C1/0531 ,  F03D7/0296 ,  F03D9/25 ,  F03D9/28 ,  F03D9/32 ,  F03D15/00 ,  F04B1/053 ,  F04B1/0531 ,  F04B1/06 ,  F04B1/063 ,  F04B11/00 ,  F04B11/0075 ,  F04B17/02 ,  F04B49/065 ,  F04B49/22 ,  F05B2260/406 ,  F16H61/4183 ,  F16H61/431 ,  Y02E10/722 ,  Y02E10/723 ,  Y02P80/158

Abstract: A hydraulic transmission comprising a variable displacement pump and motor, at least one having cylinders having valves which are controllable on each cycle of cylinder working volume to determine the net displacement of working fluid by the cylinder. The transmission has a valve control module which determines a displacement of the pump and the motor by specifying a displacement demand. The pump and/or motor valve control module determine the frequency of intensity peaks in the frequency spectrum of the pattern of cylinders carrying out active and inactive cycles of cylinder working volume using a first procedure and, if these will fall within disallowed frequency bands including the resonant frequency of components with which the transmission is in mechanical communication, the displacement demand, or another input, is periodically modified to suppress generation of those frequencies. The hydraulic transmission is useful for example in a wind turbine generator, or a vehicle.

Abstract translation: 一种包括可变排量泵和电动机的液压变速器，至少一个具有可在气缸工作体积的每个循环上控制的阀的气缸，以确定工作流体由气缸的净位移。 变速器具有阀控制模块，其通过指定位移需求来确定泵和电动机的位移。 泵和/或马达阀控制模块使用第一程序确定执行气缸工作体积的有效和无效循环的气缸图案的频谱中的强度峰值的频率，并且如果它们将落入不允许的频带，包括 传输机械通信的部件的谐振频率，位移需求或另一输入端被周期性地修改，以抑制这些频率的产生。 液压变速器例如在风力涡轮发电机或车辆中是有用的。