Dynamic Power Source Switching for MPPT Voltage Control
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Solution Overview
Problem
Power systems with multiple sources face challenges in efficiently switching between renewable and non-renewable energy sources, leading to inefficiencies in power extraction, unsafe operating voltages, and suboptimal converter operations due to variations in solar irradiance, wind speed, and load demands.
Innovation Solution
A dynamic power system configuration that includes switching units to connect power sources in series or parallel configurations, utilizing power devices with MPPT circuits and bypass units to adjust voltage and current, ensuring safe and efficient operation by dynamically responding to environmental and load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If power sources are interconnected with fixed configurations, then system simplicity is maintained, but power extraction efficiency decreases under varying environmental conditions
Solution Approach 1:
The patent implements dynamic reconfiguration of power source connections using switching units that can change the topology between series and parallel configurations based on real-time environmental conditions and load demands, thereby optimizing power extraction efficiency while managing system complexity through automated control
Solution Approach 2:
The power system is divided into modular units with individual switching elements that can independently control connection configurations of different power sources, allowing selective optimization of each module while maintaining overall system manageability
2Ease of operation
If switching between power sources is simplified, then ease of operation is improved, but unsafe operating voltages and currents may occur
Solution Approach 1:
The system incorporates control circuits that continuously monitor voltage and current levels from multiple power sources and provide feedback to the switching units, enabling automated adjustment of connection configurations to maintain safe operating parameters while simplifying user operation
Solution Approach 2:
Switching units act as intermediary components between power sources and the load, providing intelligent mediation that automatically manages voltage and current levels through controlled connection reconfiguration, thereby ensuring safety while maintaining ease of operation
3Productivity
If power converters operate at fixed parameters, then device complexity is reduced, but power converter efficiency decreases under varying conditions
Solution Approach 1:
The patent implements dynamic adjustment of power converter operating parameters including switching frequency, duty cycle, and connection topology based on real-time conditions from multiple power sources, optimizing converter efficiency while using integrated control to manage the complexity of parameter adjustments
Data Source
AI summary
A power system and a power method for a power system that includes a first power source operatively connected to an input of a first power device. The power system also includes a switch unit having a first input operatively connected to the output of the first power device. The power system further includes a second power source operatively connected to a second input of a second power device. A second output of the second power device connects to a second input of the switch unit, wherein a third output of the switch unit provides an output parameter responsive to at least one of the output of the first power device and the second output of the second power device.