Method for determining and optimising the energy consumption of a production system

• US 10,718,800 B2
• Filed: 05/15/2012
• Issued: 07/21/2020
• Est. Priority Date: 05/15/2012
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Hassel, Jorg, Mohsen, Amjad, Reinschke, Johannes
• Primary Examiner(s): Onat, Umut
• Application Number:
  US14/399,469
• Publication Number:
  US 20150120005A1
• Time in Patent Office: 2,989 Days
• CPC Class Codes: G01R 21/133 by using digital technique
• CPC Class Codes: G05B 13/04 involving the use of models or simulators
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05B 17/02 electric
• CPC Class Codes: G06Q 10/04 Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem" market predictions or forecasting for commercial activities G06Q30/0202
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling

Abstract

A method for determining the energy consumption of a production system such that the production system can be planned and operated more efficiently in terms of energy, where a load profile of the production system is determined, an energy requirement of the production system is estimated, an energy model of the production system is determined and the energy consumption of the production system is determined.

Claims

1. A method for determining an energy consumption of a production system, comprising:

a) determining a physical load profile of the production system for each individual region of the production system separately over a period of time comprising a day as a function of operating variables of the production system which describe at least a basic weight of the production system and a weight of a physical load via a load-calculating device;

b) estimating an energy requirement of the production system via an energy-calculating device by utilizing the determined physical load profile and an electromechanical model of the production system;

c) determining an energy model of the production system via the estimated energy requirement, at least one of the operating variables being assumed to be constant, and a power table being determined as a function of the operating variables not assumed to be constant;

d) determining the energy consumption of the production system via the load-calculating device as a function of the energy model and a physical load at least one of transported and processed aided by the production system; and

e) operating the production system based on the determined energy consumption of the production system to reduce a rate at which the production system consumes energy.

2. The method as claimed in claim 1, wherein the production system is subdivided into individual regions, and the method is performed for each of the individual regions.

3. The method as claimed in claim 1, wherein during step b) the electromechanical model is determined as a function of parameters of drive devices of the production system, and as a function of dimensions of the production system.

4. The method as claimed in claim 1, wherein during step c) the energy model is determined as a function of the operating variables of the production system.

5. The method as claimed in claim 1, wherein at least one of the operating variables of the production system is determined by using measurements.

6. The method as claimed in claim 1, wherein during step d) the energy consumption of the production system is determined as a function of the energy model, or as a function of the power table.

7. The method as claimed in claim 1, wherein during step d) at least one of the operating variables is examined at at least two consecutive instants to determine the energy consumption.

8. The method as claimed in claim 1, wherein said operating variables of the production system further describe at least one of speed and an acceleration of the production system.