Parallel DC/DC Converter Grid for Flexible Stable Power Distribution
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Solution Overview
Problem
Traditional power grids face challenges in efficiently managing the integration of new energy sources and loads, such as heat pumps, data centers, and renewable energy systems, due to their reliance on high voltage or medium voltage AC connections, which limit flexibility and stability.
Innovation Solution
A power distribution and collection grid based on parallel connected converters, utilizing single-stage isolated DC/DC converters with voltage control and SiC MOSFETs, allows for individual voltage control and efficient energy management, enabling flexible power distribution and reduced energy costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional high voltage or medium voltage AC connections are used, then power distribution can be achieved, but flexibility and stability are limited
Solution Approach 1:
The patent divides the power distribution system into multiple independent DC/DC converter units, each capable of autonomous operation. This segmentation allows flexible configuration and connection of different power sources and loads while maintaining system stability through modular architecture.
Solution Approach 2:
The patent transforms the traditional AC power distribution system into a DC-based system with variable voltage levels. By using DC/DC converters with adjustable voltage output, the system achieves greater flexibility in accommodating different power sources and loads while improving overall stability through precise voltage control.
2Adaptability or versatility
If multiple power sources and loads are integrated, then energy management capability is improved, but grid stability is affected
Solution Approach 1:
Each power source and load is connected through independent DC/DC converter units, creating isolated control zones. This segmentation enables individual management of each component while maintaining overall grid stability, as failures or fluctuations in one unit do not propagate to other parts of the system.
Solution Approach 2:
The system incorporates control units that continuously monitor the state of each converter and adjust operating parameters accordingly. This feedback mechanism ensures that multiple power sources and loads can be integrated while maintaining grid stability through real-time adjustments of voltage and power flow.
3Productivity
If parallel connected converters are used, then power distribution efficiency is improved, but system complexity increases
Solution Approach 1:
Multiple DC/DC converters are connected in parallel to share the power distribution load, improving overall efficiency and capacity. The converters work together as a unified system while maintaining individual control, achieving better power distribution efficiency without proportionally increasing system complexity.
Solution Approach 2:
The DC/DC converter units are designed with universal functionality to handle various power sources and load types. This multi-functionality reduces the need for specialized components for different applications, thereby improving power distribution efficiency across diverse scenarios while limiting the increase in system complexity.
Data Source
AI summary
The present disclosure relates to a power grid including a converting stage including a plurality of DC/DC converters connected in parallel. At least one of the DC/DC converters is a single-stage isolated DC/DC converter including a voltage control configured to control a voltage of the respective DC/DC converter.