Modular Ferroresonant LED Driver With Shared Energy Tank
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Solution Overview
Problem
Existing ferroresonant transformer designs require customization for specific load powers, voltages, and currents, leading to high material and manufacturing costs due to the need for custom cores, windings, and magnetic shunts.
Innovation Solution
A modular ferroresonant driver with standardized ferroresonant transformers that can be added or removed as needed, utilizing a common energy tank and magnetic shunts to provide constant current and power to LEDs, allowing flexibility in configuration and reducing the need for custom designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ferroresonant transformers are customized for specific load powers, voltages, and currents, then the lighting device can operate at optimal electrical parameters, but material and manufacturing costs increase significantly
Solution Approach 1:
The ferroresonant transformer is divided into separate functional modules: a standardized core, input windings, output windings, and magnetic shunts. These modules can be configured in different combinations to achieve various electrical parameters without requiring complete custom design and manufacturing for each application.
Solution Approach 2:
A universal standardized core design is created that can serve multiple applications with different electrical requirements. By combining this standardized core with different winding configurations and magnetic shunt arrangements, the same core can provide optimal performance for various load powers, voltages, and currents.
2Adaptability or versatility
If custom cores, windings, and magnetic shunts are manufactured for each design requirement, then the ferroresonant transformer can be precisely tailored to application needs, but manufacturing complexity and time increase
Solution Approach 1:
The transformer components are segmented into standardized and customizable parts. The core, magnetic shunts, and winding assemblies are separate modules that can be independently manufactured using standardized processes, then assembled to create application-specific configurations without requiring complete custom manufacturing for each design.
Solution Approach 2:
Standardized core designs are merged with different winding configurations and magnetic shunt arrangements to create customized transformer solutions. This combining approach allows versatility in meeting different application requirements while maintaining standardized manufacturing processes for the core components.
3Ease of manufacture
If a standardized modular design is used, then manufacturing costs and complexity are reduced, but the ability to optimize for specific electrical parameters may be compromised
Solution Approach 1:
The standardized core is designed with universal characteristics that allow it to be effectively used across multiple applications. By combining this universal core with adjustable winding configurations and magnetic shunts, the modular design maintains the ability to optimize electrical parameters while benefiting from standardized manufacturing.
Solution Approach 2:
The modular design allows dynamic configuration of windings and magnetic shunts around the standardized core to adapt to different electrical parameter requirements. This dynamic assembly approach enables optimization for specific applications without requiring custom core manufacturing, thus maintaining manufacturing efficiency while achieving parameter optimization.
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 modular design allows for efficient power delivery to LEDs with constant current and voltage, reduces manufacturing costs, and enables flexible arrangement of transformers for improved mass-balancing and robustness against power surges.
Implementation Method 1
ferroresonant transformers can be configured to provide the lighting device with a constant voltage and a constant current
Implementation Method 2
The first energy storage winding is electrically coupled to one or more capacitors
Data Source
AI summary
A lighting device, including a first and a second ferroresonant transformer, is provided. Each ferroresonant transformer includes an input winding, an energy storage winding, and an output winding. Each input winding is configured to receive the same AC power. The input windings are arranged on the primary sides of the ferroresonant transformers. The energy storage windings and the output windings are arranged on the secondary side of the ferroresonant transformers. Each energy storage winding is electrically coupled to the same group of capacitors. The output windings are configured to provide output power signals based on the capacitors and the AC power. The output power signals have constant current and constant voltage. The output power signals are rectified, smoothed, and provided to one or more LEDs. Additional ferroresonant transformers may be added to the lighting device to accommodate requirements for increased power levels.