公开(公告)号：US10459033B2

公开(公告)日：2019-10-29

申请号：US15590223

申请日：2017-05-09

Applicant: KRIWAN Industrie-Elektronik GmbH

Inventor： Christian Ellwein ,  Xiaoming Peng ,  Christian Grub

IPC: H02P21/26 ,  H02P23/14 ,  G01R31/34 ,  G05B9/02 ,  G08C15/00 ,  G08C19/02 ,  G08C19/14 ,  G08C19/22 ,  G07C3/00 ,  G07C3/10 ,  H02P29/032 ,  F04B49/06 ,  G05B23/02 ,  G05B19/048

Abstract: A method for protecting a nonmobile work machine driven by an electric motor includes determining, via a measuring unit, at least one measured value of a time-critical parameter of the work machine. The work machine is switched off when the determined measured value of the time-critical parameter is outside a predefined setpoint range. The determined measured value of the time-critical parameter is quantized in a level signal and transmitted as a first signal to an evaluation unit via an interface, and a second signal for further information concerning the work machine, to be transmitted from the measuring unit to the evaluation unit, is modulated to the first signal.

公开(公告)号：US09982928B2

公开(公告)日：2018-05-29

申请号：US14761977

申请日：2014-02-10

Applicant: KRIWAN Industrie-Elektronik GmbH

Inventor： Kurt Jansen

IPC: F25B1/00 ,  F25B49/00 ,  F25B49/02 ,  F25B13/00 ,  F04B49/03 ,  F04B49/06 ,  F04B49/22

CPC classification number: F25B49/02 ,  F04B49/03 ,  F04B49/06 ,  F04B49/065 ,  F04B49/225 ,  F25B13/00

Abstract: A method for controlling a compressor of a refrigeration system wherein refrigerant flow through the compressor is controlled by at least one valve, whereby the valve is opened or closed in a cycle of consecutive time intervals of an identical length, so that the valve is either completely closed or completely open during a time interval, wherebya. determining a percentage capacity for the compressor-corresponding to the current refrigeration requirement of a refrigeration location,b. determining the open time percentage of the valves over a number of time intervals,c. opening the valve for the following time interval when the ratio of the percentage capacity is greater than that of the open time percentage previously determined, andd. closing the valve-for the following time interval when the ratio of the percentage capacity is smaller than that of the open time percentage of the valves previously determined.

公开(公告)号：US09525366B2

公开(公告)日：2016-12-20

申请号：US14546378

申请日：2014-11-18

Applicant: Kriwan Industrie-Elektronik GmbH

Inventor： Xiaoming Peng

IPC: H02P1/44 ,  H02P25/04

CPC classification number: H02P1/445 ,  H02P25/04

Abstract: In a method for operating an asynchronous motor including a main winding and an auxiliary winding, a start capacitor is connected in series with the auxiliary winding before the asynchronous motor is started up and is disconnected at a point in time, which is to be determined, after the asynchronous motor is started up. The voltage of the auxiliary winding is measured and at least one mathematical model is used, which models the voltage amplitude of the voltage of the auxiliary winding in relation to time and includes at least one parameter of the dynamic process of the motor starting procedure, which is determined on the basis of the mathematical model and the course of the amplitude or the effective value of the measured voltage of the auxiliary winding, and the point in time for disconnecting the start capacitor is determined by means of the determined parameter.

Abstract translation: 在用于操作包括主绕组和辅助绕组的异步电动机的方法中，在异步电动机起动之前，起动电容器与辅助绕组串联连接，并且在待确定的时间点断开， 异步电动机启动后。 测量辅助绕组的电压，并使用至少一个数学模型，其对辅助绕组的电压的电压幅度相对于时间进行建模，并且包括电动机起动过程的动态过程的至少一个参数，其中 是根据数学模型和辅助绕组的测量电压的振幅或有效值的过程来确定的，并且通过确定的参数来确定断开启动电容器的时间点。

公开(公告)号：US20150198361A1

公开(公告)日：2015-07-16

申请号：US14416837

申请日：2013-08-05

Applicant: Kriwan Industrie-Electronik GmbH

Inventor： Xiaoming Peng ,  Ulf Kretschmer ,  Christian Ellwein

IPC: F25B49/02

CPC classification number: F25B49/022 ,  F04B2201/0402 ,  F04B2201/0403 ,  F04B2201/0801 ,  F25B31/006 ,  F25B41/043 ,  F25B49/025 ,  F25B2400/077 ,  F25B2600/02 ,  F25B2600/021 ,  F25B2600/0251 ,  F25B2600/0253 ,  F25B2600/026 ,  F25B2600/2521 ,  F25B2700/2115 ,  G05B2219/37429 ,  H02H7/008 ,  Y02B30/741

Abstract: Process for regulating a compressor with motor for a refrigerating system, where the temperature of the cooling site is regulated through an on-off motor mode if the temperature in the compressor exceeds an upper temperature threshold. In addition, the temperature of the cooling site is regulated through a continuous on mode of the motor as soon as the motor has cooled to a lower temperature threshold. The controller converts a variable corresponding to the cooling requirement of the cooling site into a switch signal for a valve, which results in clocked opening and closing of the valve, or uses a frequency converter, which controls the cooling liquid flow through the compressor by regulating the voltage and the frequency of the motor in that the frequency converter converts a variable corresponding to the cooling requirement of a cooling site into a voltage and a frequency for the motor.

Abstract translation: 用于调节用于制冷系统的电动机的压缩机的过程，其中如果压缩机中的温度超过上限温度阈值，则通过开 - 关电动机模式来调节冷却位置的温度。 此外，一旦电机冷却到较低的温度阈值，冷却部位的温度就会通过马达的连续运行模式进行调节。 控制器将对应于冷却站的冷却要求的变量转换为阀门的开关信号，从而导致阀的打开和关闭，或使用变频器，该变频器通过调节控制冷却液体流过压缩机的流量 电动机的电压和频率，变频器将对应于冷却站的冷却要求的变量转换为电动机的电压和频率。