Modular UPS Converter Chopper Integration

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Solution Overview

Problem

Conventional uninterruptible power supply apparatuses are larger in size due to being split into three units (converter, inverter, and chopper) with separate coolers for each, leading to increased size and complexity.

Innovation Solution

Integration of the converter, chopper, and their respective coolers into a single unit, with a shared cooler for the inverter, to reduce overall size and complexity while maintaining effective thermal management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If separate coolers are provided for converter and chopper, then cooling effectiveness is improved, but apparatus size increases

Engineering Contradiction:
Improvecooling effectivenessVSAvoidapparatus size
Core Design Contradiction:
TemperatureVSVolume of stationary object

Solution Approach 1:

The patent combines the converter and chopper into a single integrated unit, allowing them to share a common cooler. This merging eliminates the need for separate coolers for each component, reducing overall apparatus size while maintaining adequate cooling for both the converter and chopper through the shared cooling system.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If the apparatus is split into three units (converter, inverter, and chopper), then functional modularity is improved, but apparatus size increases

Engineering Contradiction:
Improvefunctional modularityVSAvoidapparatus size
Core Design Contradiction:
Adaptability or versatilityVSVolume of stationary object

Solution Approach 1:

The patent merges the converter and chopper into a single integrated unit, reducing the apparatus from three separate units to two main units (converter/chopper unit and inverter unit). This consolidation maintains the functional modularity and adaptability of the system while significantly reducing the overall apparatus size by eliminating redundant structural elements and enabling shared cooling infrastructure.

Inventive Principle:
Principle #5Merging (Combining)

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

This configuration results in a smaller, more compact uninterruptible power supply apparatus with improved thermal management, reducing the apparatus size compared to conventional designs.

Implementation Method 1

a first cooler cooling the converter and the chopper

Methodology Applied
Scientific EffectHeat dissipation: Thermal Radiation

Implementation Method 2

a second cooler cooling the inverter

Methodology Applied
Scientific EffectHeat dissipation: Thermal Radiation

Data Source

PatentUS9775266B2Modular uninterruptible power supply apparatus
Publication Date: 2017.09.26 TMEIC CORP
  • US9775266B2 patent drawing
  • US9775266B2 patent drawing
  • US9775266B2 patent drawing

AI summary

An uninterruptible power supply apparatus includes a cooler cooling a converter/chopper circuit and a cooler cooling a PWM inverter. The converter/chopper circuit and the cooler make up one integrated unit. Accordingly, a smaller apparatus can be achieved, compared with a conventional apparatus in which a cooler is provided for each of a converter and a chopper.