Code Modulated Power Transmission for Small-Scale Networks
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Solution Overview
Problem
Small-scale power networks face challenges in transmitting and receiving power efficiently due to fluctuating renewable energy sources, leading to inefficiencies in energy use and stability.
Innovation Solution
A power transmission system that includes a converter to convert input power into AC power and a code modulator to code-modulate the power using specific modulation codes, enabling high transmission efficiency by selectively using positive and negative current values, synchronized by a controller to ensure accurate code-modulation and demodulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional power transmission methods are used in small-scale power networks, then the system structure is simple, but the transmission efficiency is low and energy loss is high
Solution Approach 1:
The patent applies parameter changes by modulating the power signal with code sequences, transforming the transmission mode from direct power transmission to code-modulated power transmission. This allows the power to be transmitted with embedded identification codes, enabling multiple powers to be transmitted concurrently through the same channel without interference, thereby reducing energy loss and improving transmission efficiency
Solution Approach 2:
The patent segments the power transmission into multiple independent code-modulated signals, each carrying a unique code sequence. This segmentation allows different power streams to be transmitted simultaneously through a common channel, with each signal remaining distinguishable and independently controllable, thus improving overall transmission efficiency
2Reliability
If multiple powers are transmitted through separate channels, then transmission reliability is high, but device complexity and cable requirements increase
Solution Approach 1:
The patent merges multiple power transmission channels into a single common channel by using code division multiplexing. Each power signal is modulated with a unique code sequence, allowing them to be transmitted simultaneously through the same physical medium. The receiving end can separately demodulate each signal using the corresponding code, maintaining transmission reliability while reducing cable requirements and device complexity
Solution Approach 2:
The common transmission channel serves multiple functions by carrying multiple code-modulated power signals simultaneously. This universal channel can transmit different powers to different receiving apparatuses concurrently, eliminating the need for separate dedicated channels for each power stream, thus reducing device complexity while maintaining reliability
3Adaptability or versatility
If renewable energy sources are used, then adaptability to environmental conditions is improved, but power generation capacity is small and fluctuates largely
Solution Approach 1:
The patent implements feedback control where the controller monitors the power generation status and adjusting the code modulation parameters accordingly. This allows the system to adapt to fluctuations in renewable energy generation, optimizing power transmission efficiency and maintaining stable operation despite variations in power supply capacity
Solution Approach 2:
The system dynamically adjusts its operation based on real-time power generation conditions. The code modulation and demodulation processes are controlled adaptively to handle fluctuating power inputs from renewable sources, enabling the system to maintain efficient transmission even when power generation capacity varies significantly
Data Source
AI summary
A power transmitting apparatus includes: a converter which converts an input power into an AC power with a predetermined frequency; and a first code modulator which code-modulates at least part of the AC power with a first modulation code to generate a first code-modulated power.