Multiport Transformer Topology for Hot-Swappable Power Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power conversion systems face challenges in efficiently scaling grid infrastructure to accommodate multiple energy sources and loads, requiring downtime for adding new components and lacking methods for isolating individual devices to prevent grid contamination from failures.
Innovation Solution
A modular multiport power conversion system with galvanically isolated ports, inductively coupled to a central transformer, using voltage and current sensors and controllers to selectively manage power flow and isolate ports, allowing for hot swapping and fault detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional power conversion systems are used to scale grid infrastructure, then power conversion capability is provided, but system downtime occurs when adding or removing devices
Solution Approach 1:
The power conversion system is divided into multiple independent ports that can be individually isolated or activated. Each port operates as a separate module connected to the central transformer, allowing one port to be maintained while another undergoes addition, removal, or maintenance without affecting the entire system. This segmentation enables continuous operation and eliminates system-wide downtime.
2Productivity
If traditional power conversion systems are used, then power conversion is achieved, but grid contamination from device failures cannot be prevented
Solution Approach 1:
A galvanic isolation mechanism acts as an intermediary between the central transformer and individual ports. This isolation barrier prevents electrical faults, noise, or contamination from propagating between ports while still allowing magnetic coupling and power transfer. The isolation protects grid stability by containing failures within individual ports rather than allowing system-wide contamination.
3Adaptability or versatility
If modular ports are added or removed from the system, then system flexibility is improved, but device complexity increases
Solution Approach 1:
All ports in the system use identical, standardized configurations with the same transformer coupling and isolation mechanisms. This universal design allows any port to be added or removed without requiring unique wiring or control logic for each port. The standardized interface simplifies system configuration and reduces complexity despite the ability to scale flexibly.
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
Enables scalable, efficient power conversion with modular port addition/removal, preventing grid contamination and reducing downtime by isolating faulty components, while maintaining system stability and efficiency.
Implementation Method 1
A modular multiport power conversion system with a central transformer and galvanically isolated ports
Data Source
AI summary
A modular, multiport power conversion system includes a central transformer with a plurality of windings inductively connected to the central transformer. The plurality of windings are connected to ports able to connect to both AC and DC-devices, including both power sources and power consuming nodes. Each port is able to be selectively galvanically isolated, such that a controller is able to determine from which ports power is drawn and/or to which ports power is transferred. The system is operable to use zero voltage switching (ZVS) and/or zero current switching (ZCS) for each port to reduce power loss and increase efficiency, especially for high frequency embodiments.