Multiple Power Source Unit Load Matching
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Solution Overview
Problem
Existing power generation systems face challenges in efficiently managing multiple generators with varying capacities, efficiencies, and response times to match dynamic loads, while also considering maintenance schedules and cost-effectiveness.
Innovation Solution
A system comprising multiple generators interconnected through a controller and power combiner, allowing for throttling and modular interchangeability, with a buffer to manage peak loads and optimize generator usage based on load requirements and maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple generators with varying capacities are used to match dynamic loads, then the adaptability to different load requirements is improved, but the device complexity increases due to the need for coordination and control mechanisms
Solution Approach 1:
The power generation system is divided into multiple independent generator units with different capacities. Each generator can be independently controlled and connected to the common bus, allowing the system to segment power generation tasks across multiple units based on load requirements, thereby improving adaptability while managing complexity through modular architecture
Solution Approach 2:
The controller is designed to universally manage multiple generators with varying characteristics (capacity, efficiency, response time). The single controller performs multiple functions including load matching, economic optimization, and maintenance scheduling across diverse generator types, reducing overall system complexity by consolidating control functions
2Productivity
If generators are operated at varying capacities to optimize efficiency and cost, then the productivity is improved, but the measurement precision requirements increase for monitoring and controlling generator output
Solution Approach 1:
The controller continuously monitors the output, efficiency, and operational status of each generator, using this feedback information to dynamically adjust generator capacities. The feedback mechanism enables the system to optimize productivity by operating generators in their most efficient ranges while automatically compensating for variations through real-time control adjustments
Solution Approach 2:
The system dynamically adjusts generator output capacities based on real-time load requirements and generator performance characteristics. The controller continuously modifies operating parameters to maintain optimal efficiency across varying conditions, transforming the static generator operation into a dynamic, adaptive process that improves productivity while managing measurement requirements through continuous adjustment
3Reliability
If generators are staggered for maintenance to ensure continuous operation, then the reliability is improved, but the loss of time increases due to extended operational cycles between maintenance
Solution Approach 1:
The maintenance schedule is segmented across multiple generators rather than requiring simultaneous maintenance of all units. The controller staggers maintenance cycles so that generators are taken offline for maintenance at different times, ensuring continuous power supply from operational generators while reducing the total time loss by distributing maintenance activities throughout the operational period
Solution Approach 2:
The controller plans and schedules maintenance activities in advance, coordinating generator shutdowns and maintenance timing to minimize impact on overall system operation. By performing preliminary scheduling, the system prepares maintenance sequences that maintain reliability while optimizing the timing of maintenance events to reduce total time loss
Data Source
AI summary
A power unit including multiple generators supplies power to a load or loads that may be variable. The generators can differ, e.g., in generating capacities, rates at which their outputs can be changed, maintenance requirements, and/or different energy-conversion efficiencies. A control unit throttles the generators independently according to a digitally implemented algorithm that may, but need not, use the difference(s) in supplying power to the load. In some cases, the controller regulates monitored power delivered to the load or loads. A power combiner is connected to the outputs of the generators. If desired, a buffer can be used between the generators and the load or loads to provide energy storage that can allow for the load or loads to change at a faster rate than the generators are throttled and for peak loads that temporarily exceed the capacity of the generators.