公开(公告)号：US09382798B2

公开(公告)日：2016-07-05

申请号：US14096883

申请日：2013-12-04

Applicant: ABB Research Ltd.

Inventor： Michael Lundh ,  Jan Nyqvist

IPC: E21F1/00 ,  E21F1/02 ,  G05D7/06

CPC classification number: E21F1/00 ,  E21F1/02 ,  G05D7/0617 ,  G05D7/0676 ,  G05D7/0682 ,  Y10T137/0318

Abstract: A method of controlling fluid flow in a fluid network system by means of a plurality of fluid machines. The disclosure provides a simple empirical method of identifying network characteristics of the fluid network system used for providing the required fluid flow rate in the fluid network system utilizing minimal fluid machine power. The method includes the steps of determining a relation between a change in fluid machine speed and a corresponding change in fluid flow rate for each of the plurality of fluid machines empirically; determining a minimum total fluid machine power which provides a minimum required flow rate in the fluid network system based on a constraint involving the relation between the fluid flow rate and the corresponding fluid machine speed, and controlling a speed of the plurality of fluid machines such that the minimum total fluid machine power in the fluid network system is attained.

Abstract translation: 一种通过多个流体机器控制流体网络系统中的流体流动的方法。 本公开提供了一种简单的经验方法，用于识别用于使用最小流体机械功率在流体网络系统中提供所需流体流速的流体网络系统的网络特性。 该方法包括以下步骤：经验地确定流体机器速度的变化与多个流体机器中的每一个的流体流速的相应变化之间的关系; 基于涉及流体流速和相应的流体机器速度之间的关系的约束，确定在流体网络系统中提供最小所需流量的最小总流体机械功率，以及控制多个流体机器的速度，使得 达到流体网络系统中最小总流体机械功率。

公开(公告)号：US09995306B2

公开(公告)日：2018-06-12

申请号：US14653176

申请日：2013-12-11

Applicant: ABB Research Ltd.

Inventor： Michael Lundh ,  Jan Nyqvist

IPC: F04D27/00 ,  G05B15/02 ,  G05D7/06 ,  E21F1/02

CPC classification number: F04D27/00 ,  E21F1/02 ,  G05B15/02 ,  G05D7/0682

Abstract: A method of controlling fluid flow in a fluid network system by fluid machines includes obtaining a respective current flow rate associated with each fluid machine, obtaining a current fluid machine speed of each fluid machine, obtaining desired flow rates in the system, and determining a new fluid machine speed for each fluid machine based on the current fluid machine speed and a change in the fluid machine speed required to obtain the desired flow rates. The change in fluid machine speed is determined by minimizing a total fluid machine power which is a function dependent of the change in the fluid machine speed, the minimization being performed with constraints for flow rate, fluid machine pressure and fluid machine speed. The method include controlling the speed of the fluid machines according to the new fluid machine speeds such that the minimum total fluid machine power in the system is attained.

公开(公告)号：US20150337849A1

公开(公告)日：2015-11-26

申请号：US14653176

申请日：2013-12-11

Applicant: ABB RESEARCH LTD

Inventor： Michael Lundh ,  Jan Nyqvist

IPC: F04D27/00 ,  G05B15/02 ,  G05D7/06

CPC classification number: F04D27/00 ,  E21F1/02 ,  G05B15/02 ,  G05D7/0682

Abstract: It is presented a method of controlling fluid flow in a fluid network system by means of a plurality of fluid machines. The method comprises the steps of a) obtaining a respective current fluid flow rate associated with each fluid machine, b) obtaining a current fluid machine speed of each fluid machine, c) obtaining desired fluid flow rates in the fluid network system, d) determining a new fluid machine speed for each fluid machine based on the current fluid machine speeds and a change in the fluid machine speed required to obtain the desired fluid flow rates, wherein the change in the fluid machine speed is determined by minimizing a total fluid machine power which is a function dependent of the change in the fluid machine speed, the minimization being performed with constraints for fluid flow rate, fluid machine pressure and fluid machine speed, and e) controlling the speed of the plurality of fluid machines according to the new fluid machine speeds such that the minimum total fluid machine power in the fluid network system is attained. A computer program product and a control system are also presented herein.

Abstract translation: 提出了一种通过多个流体机器控制流体网络系统中的流体流动的方法。 该方法包括以下步骤：a）获得与每个流体机器相关联的相应的当前流体流速，b）获得每个流体机器的当前流体机器速度，c）获得流体网络系统中的期望流体流速; d）确定 基于当前流体机器速度和获得所需流体流速所需的流体机器速度的变化，每个流体机器的新的流体机器速度，其中流体机器速度的变化通过使总流体机械功率最小化来确定 这是取决于流体机器速度变化的函数，最小化是用流体流速，流体机械压力和流体机器速度的约束进行的，以及e）根据新流体控制多个流体机器的速度 机器速度使流体网络系统中的最小总流体机械功率达到。 本文还介绍了计算机程序产品和控制系统。