Multi-Fan System Dynamic Control for Power-Optimized Operating Points
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Solution Overview
Problem
Existing ventilation systems with multiple fans face challenges in optimizing total power demand and efficiency, as the operation of fan groups under varying conditions leads to different power consumption and efficiency levels, necessitating a control method to manage these factors effectively.
Innovation Solution
A control method and device that determine the operating state and power optimization potential of fans, compare these states to provide optimization recommendations, and adjust setpoints to bring fans to a power-optimized operating point, thereby increasing system efficiency by distributing air quantities and pressure optimally across individual fans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple fans operate under varying conditions to meet different ventilation demands, then the system can achieve required volume flow and pressure, but the total power consumption increases and efficiency decreases
Solution Approach 1:
The patent implements dynamic control of fan operating points by continuously monitoring system pressure and volume flow requirements. The control device adjusts each fan's operating point in real-time based on current system demands, transitioning fans between different operating states to optimize the balance between productivity and energy consumption.
Solution Approach 2:
The patent changes operational parameters (volume flow, pressure, rotation speed) of individual fans based on system requirements. By adjusting these parameters dynamically and selecting optimal operating points from characteristic curves, the system achieves required productivity while minimizing total power consumption across multiple fans.
2Productivity
If multiple fans operate under varying conditions to meet different ventilation demands, then the system can achieve required volume flow and pressure, but the total efficiency of the system decreases
Solution Approach 1:
The patent employs feedback control by continuously measuring system pressure and volume flow, comparing actual performance with target values, and adjusting fan operating points accordingly. This closed-loop control ensures fans operate at optimal efficiency points while maintaining required productivity, minimizing energy losses.
Solution Approach 2:
The system dynamically adjusts fan operating points based on real-time system conditions. By transitioning fans between different operating states and selecting optimal points from characteristic curves, the system maintains high efficiency across varying productivity requirements.
3Use of energy by moving object
If the operating state of fans is adjusted to optimize power consumption, then energy efficiency improves, but system complexity increases due to control requirements
Solution Approach 1:
The control device automatically determines optimal operating points for each fan based on system requirements and characteristic curves stored in memory. The system performs self-adjustment without manual intervention, selecting and implementing optimal operating states autonomously, which reduces the need for complex external control mechanisms.
Solution Approach 2:
The patent stores characteristic curves and optimal operating point data in the control device's memory beforehand. This preliminary preparation allows the control device to quickly determine optimal operating states without complex real-time calculations, simplifying the control system while maintaining optimization capabilities.
4Adaptability or versatility
If fans operate at non-optimized points to meet variable demands, then system adaptability improves, but power consumption and efficiency worsen
Solution Approach 1:
The patent implements dynamic adjustment of fan operating points to match varying system demands. By continuously adapting operating parameters and selecting optimal points from characteristic curves, the system maintains flexibility in responding to different ventilation requirements while preventing operation at inefficient points.
Solution Approach 2:
The system changes operational parameters (volume flow, pressure, rotation speed) of individual fans based on system requirements. By dynamically adjusting these parameters and selecting optimal operating points, the system achieves both adaptability to varying demands and optimization of power consumption.
Data Source
AI summary
A control device and a method for controlling a system having at least two fans (1) and/or fan groups for generating a defined setpoint value (VG,setpoint, ΔpG,setpoint), wherein, by changing the operating points of at least one fan (1) depending on which setpoint value is fixedly predetermined, at least one of the fans (1) is brought to an optimal operating point and thereby the efficiency ηG of the system is increased.