Inverter Apparatus with Segmented Output for Dual Voltage Standards
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Solution Overview
Problem
Existing solar energy grid-connected power generation systems can only output one kind of voltage, making them incompatible with countries that have multiple voltage standards, such as Japan with 101 volts and 202 volts, requiring additional transformers for household appliances with different voltage requirements.
Innovation Solution
The inverter apparatus and solar energy grid-connected power generation system are designed with multiple output points and relay switches, allowing for the generation of two distinct voltages by converting between half bridge and full bridge inverter configurations, enabling the system to output both 101 volts and 202 volts without the need for extra transformers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a solar energy grid-connected power generation system is designed to output only one kind of voltage, then the system structure is simple, but it cannot adapt to countries with multiple voltage standards
Solution Approach 1:
The inverter output is segmented into multiple independent output points (first output point P3, second output point P4, third output point P5), each capable of providing different voltage levels. This segmentation allows the system to serve multiple voltage standards simultaneously without requiring a single complex transformation stage.
Solution Approach 2:
The inverter apparatus is designed with multi-functionality to operate in different modes: it can output single voltage to a single power grid, output different voltages to different power grids simultaneously, or output combined voltage to a single power grid. This universal design eliminates the need for additional transformers when dealing with multiple voltage standards.
2Adaptability or versatility
If an extra transformer is arranged to accommodate different voltage requirements, then voltage compatibility is achieved, but the device complexity and cost increase
Solution Approach 1:
The inverter apparatus integrates multiple output capabilities within a single device, eliminating the need for separate transformers. The apparatus can directly output different voltages to different power grids or combine voltages, providing universal compatibility without additional transformation components.
Solution Approach 2:
The patent merges the functions of multiple transformers into a single inverter apparatus. By integrating multiple output points with different voltage capabilities into one device, the system reduces component count while maintaining voltage compatibility across different standards.
3Adaptability or versatility
If the inverter outputs only one kind of voltage, then the inverter structure is simple, but household appliances requiring different voltages cannot be used
Solution Approach 1:
The output is divided into multiple independent points (P3, P4, P5) that can be selectively connected to power grids with different voltage standards. This segmentation allows household appliances with different voltage requirements to be connected to appropriate output points without requiring external transformation equipment.
Solution Approach 2:
The system employs dynamic switching through relay switches (R1, R2, R3) that can reconfigure the circuit topology in real-time. This dynamic capability allows the inverter to adapt its output configuration based on the connected load requirements and power grid conditions, providing appliance compatibility across different voltage standards.
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 solution allows the system to adapt to different voltage requirements, eliminating the need for additional transformers and increasing flexibility, enabling seamless integration with various household appliances in regions with multiple voltage standards.
Implementation Method 1
The inverter apparatus comprises a first output point, a second output point and a third output point... A voltage difference between the first output point and the third output point is equal to a voltage provided by the first power grid... A voltage difference between the third output point and the second output point is equal to a voltage provided by the second power grid
Data Source
AI summary
An inverter apparatus includes a first capacitor, a second capacitor, a first switch, a second switch, a third switch, a fourth switch, a first inductor and a second inductor. The first capacitor, the second capacitor, the first switch, the third switch and the first inductor form and have functions of a half bridge inverter. The first capacitor, the second capacitor, the second switch, the fourth switch and the second inductor form and have functions of a half bridge inverter. Therefore, the present invention obtains two kinds of voltages.