Diesel Generator Supplemental Power for Transient Load Response
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Solution Overview
Problem
Diesel generator systems face challenges in responding quickly to transient changes in electrical load, which can lead to mechanical stress, inefficiency, and potential damage to the engine and attached equipment.
Innovation Solution
A solid state transient power response system that utilizes starting batteries to provide supplemental electrical power during transient periods of increased load, allowing the diesel generator to gradually increase its output and reducing mechanical loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a diesel generator system is used to provide electrical power, then steady state power generation efficiency is improved, but transient response to sudden load changes deteriorates
Solution Approach 1:
The patent combines a diesel generator system with a solid state transient power response system (capacitor bank) to create a hybrid power system. The capacitor bank is electrically connected in parallel with the generator output, allowing it to immediately supply transient power demands while the generator handles steady state loading, thus merging the advantages of both power sources.
Solution Approach 2:
The solid state transient power response system acts as an intermediary between the diesel generator and the electrical load. During transient load changes, the capacitor bank mediates by absorbing or supplying power instantly, preventing direct mechanical stress on the generator and allowing it to respond at its own slower pace while maintaining stable output.
2Reliability
If the diesel generator is sized to handle maximum transient loads, then transient response capability is improved, but fuel inefficiency worsens
Solution Approach 1:
Instead of sizing the generator for maximum transient loads (excessive action), the patent uses the generator only for steady state power generation at optimal efficiency points. The capacitor bank handles the transient peaks (partial action), allowing the generator to operate in its most efficient range without being oversized for rare transient events.
Solution Approach 2:
The patent segments the power delivery function between two components: the diesel generator handles steady state baseline power generation, while the solid state capacitor bank handles transient peak demands. This segmentation allows each component to be optimized for its specific function, improving overall system efficiency.
3Speed
If the diesel generator responds quickly to transient load changes, then transient response is improved, but mechanical stress and potential damage worsen
Solution Approach 1:
The solid state transient power response system serves as a buffer intermediary between the electrical load and the diesel generator. During sudden load changes, the capacitor bank absorbs the transient power demands, preventing direct mechanical stress transmission to the generator engine, thus protecting it from damage while maintaining quick electrical response.
Solution Approach 2:
The capacitor bank is pre-charged during steady state operation, creating an energy cushion beforehand. When transient load changes occur, this pre-stored energy immediately compensates for load variations, cushioning the generator from sudden mechanical stress and allowing it to respond gradually without damage.
4Reliability
If a secondary power system is added to handle transient loads, then transient response capability is improved, but system complexity and cost worsen
Solution Approach 1:
The patent replaces complex mechanical transient response systems (such as flywheels or additional engines) with a solid state electronic capacitor bank. This substitution maintains transient power supply capability while dramatically reducing mechanical complexity, moving parts, and maintenance requirements.
Solution Approach 2:
The patent changes the fundamental parameter of transient response from mechanical (moving parts, inertia-based) to electrical (capacitor discharge/charge). This parameter change enables transient power handling with solid state electronics, reducing system complexity while improving response speed and reliability.
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 effectively mitigates the effects of transient load changes, reducing the need for oversized generators, minimizing fuel inefficiency, and preventing mechanical damage, while also reducing the reliance on expensive secondary power systems.
Implementation Method 1
A voltage source having a positive terminal and a negative terminal, means for connecting the voltage source in parallel with the armature winding of the motor generator, wherein the capacitance of the capacitor is sufficient to maintain the voltage across the capacitor within plus or minus ten percent of a rated voltage for a time period of one to five minutes
Data Source
AI summary
Disclosed are improved devices, systems and methods for powered generator systems which incorporate a solid-state transient power response system to provide supplemental electrical power to the power output during a transient period of increased electrical load, which permits the generator system sufficient time to progressively “spin up” the generator and/or otherwise increase power output at a desired rate to meet the increased electrical load demand in a desired manner.