Microturbine Electricity Generation System with Parallel Converter Segmentation
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Solution Overview
Problem
Conventional microturbine electricity generation systems suffer from high power conversion loss and low efficiency due to the use of high current switches with high conduction resistances, and they cannot operate when the electricity converter is not in a normal state, leading to low utilization.
Innovation Solution
A microturbine electricity generation system with a microturbine generator, a generator controller, an electricity conversion device comprising multiple converters, and a converter controller that dynamically manages the conversion process based on the state of each converter, allowing only normal converters to participate in power conversion and optimizing power distribution to minimize losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single electricity converter is used to handle high current stress, then the system can maintain simplicity in structure, but the converter suffers from high conduction resistance and high power conversion loss
Solution Approach 1:
The patent divides the single electricity converter into multiple parallel converters (first electricity converter and second electricity converter). Each converter handles a portion of the current, reducing the current stress and conduction resistance of individual converters. This segmentation allows the system to maintain structural simplicity while significantly reducing power conversion losses through parallel current distribution.
2Device complexity
If a single electricity converter is used, then the system structure remains simple, but the system cannot operate when the converter is not in normal state, resulting in low utilization
Solution Approach 1:
The system is segmented into multiple independent electricity converters that can operate autonomously. When one converter fails or is not in normal state, the other converters can continue to operate and convert electricity, ensuring system productivity is maintained. The controller dynamically manages the operational state of each converter based on their normal state detection.
Solution Approach 2:
The controller dynamically adjusts the operational parameters of the electricity converters based on their detected normal state. When converters are in normal state, they are activated for power conversion; when not in normal state, they are deactivated. This dynamic parameter change optimizes system utilization by ensuring only functional converters are actively converting power.
3Power
If high current switches with high conduction resistance are used to endure high current stress, then the converter can handle the current load, but power conversion loss increases
Solution Approach 1:
The patent segments the high current handling task across multiple parallel converters. Each converter handles a fraction of the total current, allowing the use of switches with lower conduction resistance in each converter. This reduces the overall power conversion loss while maintaining the system's total current handling capacity.
Solution Approach 2:
Multiple converters with lower individual conduction resistance are merged in parallel to achieve the same total current handling capacity as a single converter with high conduction resistance. The combined parallel structure reduces total power loss while maintaining equivalent power handling capability.
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 reduces power conversion losses and improves efficiency by using converters with low conduction resistances and ensures high utilization even when some converters are not in a normal state, enhancing overall electricity generation efficiency.
Implementation Method 1
The microturbine generator converts fuel into alternating current (AC) supply electricity
Implementation Method 2
The electricity converter undergoes supply-to-output AC conversion, which converts the AC supply electricity into AC output electricity that has a frequency of 50 Hz or 60 Hz
Data Source
AI summary
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