Subsea Multi-Port Power Nodes for Pulsed Load and Mobile Injection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional high-voltage, long-distance power transmission systems are limited to a single point of use and lack the capability for intermediate power injection from a mobile source, restricting them to steady-state loads and not accommodating high-kilowatt pulsed loads or multiple tap points.
Innovation Solution
A multi-port subsea high-voltage power modulation and stored energy distribution system is introduced, featuring multiple electrical nodes connected in series with power converters that change voltage and frequency, and high-speed synchronous rotating machines with inertial storage flywheels. This system includes inductive power couplers for coupling with mobile power sources, enabling bidirectional power flow and accommodating diverse loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional constant-current DC transmission with static converters is used, then voltage drop over long transmission lines is managed, but the system lacks capability for intermediate power injection and is limited to steady-state loads
Solution Approach 1:
The transmission line is divided into multiple segments with intermediate nodes containing HSRMs. Each node can independently manage power flow, enabling intermediate power injection and supporting diverse load types at different locations along the transmission line.
Solution Approach 2:
Static power electronic converters are replaced with dynamic HSRMs that can rapidly respond to varying load demands. The HSRM's rotating mass and electromagnetic coupling enable it to handle both steady-state and pulsed loads while providing intermediate power injection capability.
2Adaptability or versatility
If conventional systems are configured for long-distance transmission, then power can be transmitted over 25-150 km, but intermediate power injection from mobile sources is not possible
Solution Approach 1:
The HSRM serves multiple functions: it acts as a voltage booster for long-distance transmission, an intermediate power injection point for mobile sources, and a load adapter for diverse consumer types. This multi-functionality enables both intermediate power injection and maintains operational flexibility.
Solution Approach 2:
The HSRM acts as an intermediary device between the primary power source and various loads or mobile power sources. Its electromagnetic coupling and rotating mass allow it to mediate power transfer in both directions, facilitating intermediate injection while maintaining system flexibility.
3Adaptability or versatility
If voltage is maintained over long transmission lines, then power delivery is stable, but the system cannot accommodate high-kilowatt pulsed loads
Solution Approach 1:
The HSRM's dynamic response capability, enabled by its electromagnetic coupling and controlled field, allows it to rapidly adjust to pulsed load demands while maintaining overall voltage stability through its rotating mass and regulatory mechanisms.
Solution Approach 2:
The HSRM changes its electromagnetic parameters (field strength, coupling coefficient) to adapt to different load types. For pulsed loads, it adjusts its magnetic coupling to handle high-power transient demands while maintaining voltage stability for the broader system.
4Adaptability or versatility
If multiple tap points are added to enable intermediate power injection, then adaptability improves, but system complexity increases
Solution Approach 1:
Each HSRM node is designed as a universal multi-port interface that can connect to different types of power sources and loads. This standardized multi-functional node design enables multiple tap points without proportionally increasing overall system complexity.
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 provides a flexible, efficient, and scalable solution for high-voltage power transmission, enabling multiple tap points and accommodating both steady-state and pulsed loads, while also allowing for intermediate power injection from mobile sources.
Implementation Method 1
an inductive power coupler configured to electrically couple the node to a mobile power source that is configured to (i) provide second power to the node and (ii) receive a portion of the first power from the node using contactless inductive power transfer
Implementation Method 2
a high-speed synchronous rotating machine (HSRM), which includes an inertial storage flywheel
Data Source
AI summary
A system includes multiple electrical nodes connected in series to a primary power source via transmission lines. Each node includes a power converter that can receive first power from the primary power source or another upstream node. The power converter can change a voltage level and/or a frequency of the first power. Each node also includes a high-speed synchronous rotating machine (HSRM), which includes an inertial storage flywheel, a rotating excitation assembly, stator windings, and a synchronous motor coupled to an induction generator. The HSRM can boost a voltage level between an input and output to compensate for a voltage drop of the first power. At least one of the nodes further includes an inductive power coupler to electrically couple the node to a mobile power source that provides second power to the node and receives a portion of the first power from the node using contactless inductive power transfer. The system includes a combination of AC and DC power transmission techniques and associated bidirectional power converters.