Inverter Stack Modular Integrated Structure Switching

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Solution Overview

Problem

Existing inverter systems are inflexible, as they cannot change installation directions or input/output terminal fastening methods post-initial design, limiting their ability to accommodate diverse power converter configurations, and lack a unified product family, leading to high development and management costs and prolonged development times for various structure configurations.

Innovation Solution

An inverter stack with a modular and integrated structure capability, featuring a case with a main body frame and cover, a circuit unit, inverter controller, and bus bars that can be switched between modular and integrated configurations by coupling or decoupling a cover, allowing for diverse installation methods and parallel connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If inverter structure is fixed in initial design, then manufacturing precision is improved, but adaptability deteriorates

Engineering Contradiction:

Improvestructural configurationVSAvoidinstallation direction and connection method

Core Design Contradiction:

Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The inverter structure is segmented into a main body frame and a detachable cover, allowing the cover to be selectively attached or removed. This segmentation enables the inverter to switch between different structural configurations (modular with cover attached, integrated with cover removed) while maintaining precise manufacturing of each component.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The inverter structure transitions from a static fixed design to a dynamic reconfigurable structure. The cover can be attached or detached based on operational requirements, allowing the system to adapt between modular and integrated configurations without requiring multiple different inverter models.

Inventive Principle:

Principle #15Dynamics

2Manufacturing precision

If multiple inverter structures are designed separately, then manufacturing precision for each structure is improved, but device complexity increases

Engineering Contradiction:

Improvestructure configurationVSAvoidproduct family unification

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

A single inverter design serves multiple functions by accommodating both modular and integrated structures through the detachable cover mechanism. This universal design eliminates the need for separate product families for different structural requirements, reducing overall device complexity while maintaining manufacturing precision.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The modular bus bar and integrated bus bar are merged into a single inverter unit, with the choice of configuration determined by whether the cover is attached or removed. This merging allows both structural types to coexist in one product design, simplifying the product family while maintaining precise manufacturing standards.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If inverter structure is modified post-development, then adaptability is improved, but loss of time increases

Engineering Contradiction:

Improveconfiguration flexibilityVSAvoiddevelopment time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The inverter is pre-configured with both modular and integrated structural capabilities during initial manufacturing, with the cover serving as a pre-prepared switching mechanism. This preliminary action eliminates the need for post-development modifications, as the structure can be immediately reconfigured by simply attaching or removing the cover based on operational requirements.

Inventive Principle:

Principle #10Preliminary action

4Adaptability or versatility

If inverter structure is modified post-development, then adaptability is improved, but development cost increases

Engineering Contradiction:

Improveconfiguration flexibilityVSAvoiddevelopment and management cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP3723460B1Inverter stack capable of structure modification

Publication Date: 2022.04.13 KOREA PLANT SERVICE & ENG CO LTD

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AI summary

An inverter stack capable of structure modification includes a case having an interior space and including a main body frame and a cover, a circuit unit provided in the interior space, an inverter controller provided in the interior space and connected to the circuit unit to transfer a signal, and a bus bar provided in the case and connected to the circuit unit, the bus bar being electrically connected to a power supply. The main body frame includes a front part, a rear part facing the front part, an upper part provided at the tops of the front part and the rear part, and a lower part facing the upper part, and the cover is detachably coupled to the main body frame and covers the main body frame.