Modular DC Power Plant with Capacitor-Assisted Engine Starting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional power generation and distribution systems face inefficiencies due to the need for conversion from AC to DC power, particularly in localized power generation and distribution, where existing systems lack efficient means for starting engines and managing power flow effectively.
Innovation Solution
A modular power system that includes a backplane, housing, and data connection ports, with modules that can plug into the backplane, featuring microprocessors, half-bridge circuits, power conditioning elements, and sensors to control rotating power generators, such as Stirling engines, to produce DC power efficiently, including a method for starting engines using a small power supply supplemented by a capacitor bank and converting AC to DC power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If AC to DC conversion is implemented in localized power generation, then power distribution efficiency is improved, but system complexity increases due to additional conversion requirements
Solution Approach 1:
The power system is divided into modular units with standardized interfaces. Each module can independently perform AC to DC conversion, allowing localized power generation to be distributed across multiple manageable segments rather than requiring a single complex centralized conversion system.
Solution Approach 2:
The patent implements universal power modules that can operate in multiple modes (AC input, DC input, grid-tied, standalone) and perform multiple functions (power conversion, storage, distribution). This multi-functionality reduces the need for separate dedicated conversion systems, thereby reducing overall system complexity while maintaining efficiency.
2Reliability
If engine starting systems are added to localized power generation, then power availability is improved, but device complexity increases due to additional starting components
Solution Approach 1:
The engine starting system is merged with the power conversion module. The DC output from the power conversion module is directly used to power the engine starter motor, eliminating the need for separate battery systems or external power sources for starting. This integration improves power availability while minimizing additional complexity.
Solution Approach 2:
The system uses its own DC power output to service the engine starting requirement. The power conversion module generates DC power that is fed back to the starter motor, creating a self-sufficient starting system that does not require external assistance or additional complex starting infrastructure.
3Productivity
If power management control systems are implemented, then power flow management is improved, but device complexity increases due to additional control electronics
Solution Approach 1:
The control system implements feedback mechanisms that monitor power flow, voltage, and current conditions. Based on this feedback, the system automatically adjusts power conversion parameters and routing decisions. This feedback-based control achieves effective power flow management through relatively simple control logic that responds to actual system conditions rather than requiring complex predictive algorithms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables efficient production and management of DC power, reducing inefficiencies and emissions, while providing reliable power control and safety features like arc fault detection and current limiting, enhancing the operational stability of localized power generation.
Implementation Method 1
starting engines using a small power supply supplemented by a capacitor bank
Implementation Method 2
converting AC to DC power
Data Source
AI summary
A DC power plant generating DC power from a variety of engines including a Stirling cycle engine. The DC power plant includes a relatively small start-up power source that is discontinued after the engine is running. A method for producing DC power for a load including starting up an engine using power supplied by a relatively small power supply supplemented by a capacitor bank, providing output from the engine to a generator, producing alternating current (AC) power by the generator, converting the AC power to direct current (DC) power, disabling output of the DC power during a first set of pre-selected conditions, limiting a rate of change of current of the DC power during a second set of pre-selected conditions, reducing conducted and radiated emissions of the DC power, disconnecting the DC power from the load under a third set of pre-selected conditions, and providing the DC power to the load.