Compressor Inlet Guide Vane Control for Multi-Body Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Compressor systems with multiple compressor bodies face performance differences due to individual variations or aging degradation, leading to narrowed operational ranges and potential surging issues when controlling inlet guide vanes.
Innovation Solution
A compressor control device that includes flow rate detectors, pressure detectors, and an inlet guide vane opening degree control unit, which generates and corrects inlet guide vane opening degree command values based on upstream-most flow rate and post-merger pressure detection values to account for performance differences between compressor bodies, preventing surging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If synchronized control of inlet guide vanes is performed based on a single compressor body's performance, then control simplicity is maintained, but operational range narrows due to performance differences between compressor bodies
Solution Approach 1:
The control system is segmented into individual control units for each compressor body. Each control unit independently manages the inlet guide vane of its corresponding compressor body, allowing customized control strategies for each unit based on its specific performance characteristics while maintaining overall system coordination.
Solution Approach 2:
The control approach transitions from uniform synchronized control to localized individual control. Each compressor body receives tailored control parameters optimized for its specific performance state, enabling the system to adapt to performance variations and expand the operational range while preserving control effectiveness.
2Adaptability or versatility
If individual control of inlet guide vanes is implemented for each compressor body, then adaptability to performance differences improves, but control system complexity increases
Solution Approach 1:
A universal control framework is established that can accommodate multiple compressor bodies with different performance characteristics. The control system uses a standardized architecture with individualized parameters, allowing the same control structure to be applied across all compressor bodies while adapting to their specific needs, thus managing complexity through standardization.
Solution Approach 2:
The control system manages complexity by changing parameters rather than structure. Individual control is achieved by adjusting control parameters (opening degrees, timing) for each compressor body within a unified control framework, avoiding the need for entirely separate control systems while still accommodating performance differences.
3Reliability
If control is based on degraded performance compressor bodies, then system reliability is maintained, but productivity decreases due to suboptimal operation of other compressor bodies
Solution Approach 1:
The control system incorporates feedback mechanisms that continuously monitor the performance state of each compressor body. This feedback enables the control system to dynamically adjust inlet guide vane opening degrees for each compressor body based on real-time performance data, optimizing overall system efficiency while maintaining stability through continuous monitoring and adjustment.
Solution Approach 2:
The control system transitions from static control based on degraded performance to dynamic control that adapts to the actual state of each compressor body. By continuously adjusting control parameters based on real-time performance feedback, the system optimizes productivity while maintaining reliability through adaptive response to changing conditions.
Data Source
AI summary
A compressor control device includes an inlet guide vane opening degree control unit configured to control an opening degree of an inlet guide vane. The inlet guide vane opening degree control unit includes an inlet guide vane opening degree command value calculation unit configured to calculate an inlet guide vane opening degree command value based on an outlet pressure detection value and a plurality of inlet guide vane opening degree correction units each configured to correct the inlet guide vane opening degree command value based on the post-merger pressure detection value and a corresponding inlet flow rate detection value for each of a plurality of upstream-most compressor bodies.