Modular Power Distribution System for Vehicle DC AC Loads
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Solution Overview
Problem
Existing power distribution systems are not optimized for efficiently distributing both AC and DC currents with different voltage levels in various locations, making it difficult to configure and distribute power close to electrical loads effectively.
Innovation Solution
A modular power distribution system comprising self-configurable units with an electromechanical and electronic part, allowing for modular expansion and control of both AC and DC loads, featuring a base unit and interchangeable modules for load control, communication, and redundancy to manage power distribution in independent locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If power distribution is centralized in traditional systems, then system structure is simple, but power cannot be distributed close to loads efficiently
Solution Approach 1:
The power distribution system is segmented into multiple independent physical units (PUs), each capable of autonomous operation. Each PU contains power supply modules, control units, and distribution circuits that can function independently, enabling decentralized power distribution closer to loads while maintaining manageable complexity through modular architecture.
Solution Approach 2:
The system transitions from a single-dimensional centralized distribution model to a multi-dimensional distributed network. Power can be distributed along multiple paths through different PUs, allowing flexible routing and redundancy. This dimensional expansion enables power distribution close to loads while maintaining system simplicity through standardized modular interfaces.
2Loss of energy
If power distribution is distributed close to loads, then energy loss is reduced, but cable size and weight increase
Solution Approach 1:
By segmenting the power distribution into multiple PUs located close to load centers, the patent reduces the distance power must travel through cables. Each PU handles only the power needed for its local loads, significantly reducing total cable length and weight while minimizing energy loss through shorter transmission paths.
Solution Approach 2:
The system changes the voltage parameter locally at each PU to optimize power transmission. By converting and distributing power at appropriate voltage levels close to loads, the system reduces current requirements and consequently reduces cable size and weight needed for the same power delivery.
3Adaptability or versatility
If modular units are used for power distribution, then system adaptability is improved, but device complexity increases
Solution Approach 1:
Each physical unit is designed as a universal module capable of multiple functions: power supply, power distribution, load control, and communication. This multi-functionality reduces the need for specialized components for each function, allowing the system to adapt to different configurations using the same basic PU building blocks, thereby improving adaptability without proportionally increasing complexity.
Solution Approach 2:
The system employs dynamic configuration capabilities where PUs can be added, removed, or reconfigured based on load requirements. Control units within each PU dynamically adjust power distribution parameters and communicate with other PUs to optimize system performance. This dynamic adaptability allows the system to scale and reconfigure without requiring complete system redesign.
4Reliability
If control is decentralized to physical units, then system reliability is improved, but control complexity increases
Solution Approach 1:
Each physical unit incorporates self-diagnostic and self-regulation capabilities through integrated control units. The PUs autonomously monitor their own operational status, detect faults, and adjust their power distribution accordingly. This self-service capability improves reliability by enabling rapid local response to issues while reducing the control burden on central systems, effectively managing control complexity through automation.
Solution Approach 2:
The decentralized control architecture implements feedback loops within each PU and between PUs. Control units continuously monitor power parameters, load conditions, and system status, using this feedback to automatically adjust power distribution. This feedback mechanism improves reliability through real-time monitoring and adjustment while managing control complexity through automated closed-loop control rather than complex manual coordination.
Data Source
AI summary
A modular power distribution system configured to drive DC and AC electrical loads comprises logical units in different locations receiving DC and AC power lines for distribution to respectively DC and AC electrical loads in all of these locations. In each of the logical units, the system comprises one or more physical units, and in each of the physical units one or more power modules for the distribution of DC or AC power to one of the DC or AC electrical loads. Finally, the system comprises at least one master control unit for each of the logical units placed in one of physical units to control the functions of the pertaining logical unit.