Dimming Converter Phase Angle Detection for Load Compatibility
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Solution Overview
Problem
Existing dimming systems using phase-cut dimmers often underutilize or insufficiently supply power to loads with different dimming requirements, leading to inefficient dimming and reduced service life.
Innovation Solution
A dimming system and method that includes a dimming converter with a cutting phase determination unit, output unit, and storage unit, which determines phase angle information of the power supply signal and outputs a corresponding dimming signal to the load, allowing for efficient dimming across various loads with different requirements by adjusting the phase-cut power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a phase-cut dimmer is used to supply mains power to loads with different dimming requirements, then the load can be dimmed, but the phase-cut power supply becomes underutilized or insufficient, degrading dimming efficiency and load service life
Solution Approach 1:
The patent introduces a converter as an intermediary device between the phase-cut dimmer and the load. The converter receives the phase-cut power supply signal, determines the cutting phase information, and converts it into an appropriate dimming signal tailored to the specific load requirements. This intermediary conversion process resolves the mismatch between the generic phase-cut signal and diverse load dimming needs, improving both compatibility and dimming efficiency while extending load service life.
2Ease of operation
If a phase-cut dimmer is used to dim loads with different dimming requirements, then dimming function is achieved, but the service life of the loads is degraded due to inefficient dimming
Solution Approach 1:
The patent changes the parameters of the power supply signal by introducing a converter that transforms the phase-cut signal into load-specific dimming signals with appropriate voltage, frequency, and waveform characteristics. This parameter transformation ensures that each load receives optimally suited dimming signals, maintaining ease of operation while significantly improving reliability and extending the service life of diverse loads.
Data Source
AI summary
A dimming system and a dimming converter and load dimming method thereof are provided. In the dimming converter, a cutting phase determination unit is connected with an input terminal and configured to determine phase angle information of a power supply signal of an output of a load terminal in a dimmer; an output unit is configured to output a dimming signal corresponding to the phase angle information determined by the cutting phase determination unit from a dimming output terminal to a load of the dimming system according to a correspondence relationship between the phase angle information and the dimming signal stored in a storage unit and to output a phase-cut power source signal from a supply output terminal to the load. The dimming system can be compatible with a large number of loads with different dimming requirements to thereby improve the dimming efficiency of the loads.