Modular Rectifier Assembly With Remote Placement and Heat Dissipation
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Solution Overview
Problem
Existing rectifier assemblies for AC drives lack efficiency and flexibility, as they are often integrated within the drive apparatus, limiting their upgrade, retrofit, and placement options, and do not effectively manage heat dissipation.
Innovation Solution
A modular rectifier assembly with separate and independent rectification modules that include electronic networks for AC to DC conversion, active and passive heat exchange elements, and a mounting base allowing flexible placement, enabling efficient heat removal and reuse of existing equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If rectifier assemblies are integrated within the drive apparatus, then the structure is compact, but flexibility and upgrade options are limited
Solution Approach 1:
The rectifier assembly is separated from the drive apparatus into independent modular units. The rectifier can be placed in a remote location and connected via conductors, allowing flexible placement and upgrading without replacing the entire drive system. This segmentation enables independent optimization of rectifier and drive components.
Solution Approach 2:
The rectifier function is extracted from the integrated drive apparatus and implemented as a separate, standalone assembly. This extraction allows the rectifier to be upgraded, replaced, or repositioned independently, significantly improving adaptability and upgrade options while maintaining system functionality.
2Temperature
If traditional rectifier designs are used, then manufacturing is simple, but heat dissipation is ineffective
Solution Approach 1:
Heat sinks are introduced as intermediary thermal management components between the rectifier electronics and the surrounding environment. These heat sinks facilitate efficient heat transfer from the rectifier diodes and electronics to the ambient air, significantly improving heat dissipation effectiveness.
Solution Approach 2:
Forced air cooling is implemented using fans to create airflow through and over the heat sinks. This pneumatic cooling system enhances convective heat transfer, allowing the rectifier assembly to dissipate heat more effectively than passive cooling alone, while maintaining a relatively simple overall structure.
3Adaptability or versatility
If modular rectification modules are used, then flexibility and reuse are improved, but device complexity increases
Solution Approach 1:
The mounting base is designed with universal features that can accommodate different rectification module configurations. The modular design allows the same mounting base structure to support various numbers and types of rectification modules, improving adaptability without requiring completely different assemblies for each configuration.
Solution Approach 2:
The rectifier assembly is divided into independent rectification modules that can be individually selected, replaced, or upgraded. Each module is a self-contained unit with its own heat sinking and cooling elements, allowing flexible configuration while using standardized mounting interfaces that minimize overall 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 modular design enhances efficiency, reduces costs by allowing reuse of existing equipment, and improves performance by providing flexible placement options while effectively managing heat dissipation, thus improving the overall operation of AC drive systems.
Implementation Method 1
The heat sink may be thermally coupled to the rectification module
Implementation Method 2
Each active cooling element may be a fan
Data Source
AI summary
A rectifier assembly includes: a mounting base; and one or more rectification modules configured to be received in the mounting base, each rectification module including: an electronic network including one or more electronic elements configured to convert alternating current (AC) electrical power at an input of the rectification module to direct current (DC) electrical power at an output of the rectification module. Each of the one or more rectification modules is configured to be electrically connected to a DC bus of a driving apparatus that is separate from and independent of the rectifier assembly.