Micro-inverter Control via Intermediate Rectified Signal
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Solution Overview
Problem
Current electrical systems experience significant switching losses when converting a direct signal into a sinusoidal signal compatible with a power grid, due to the need for short switching times at high voltages, which results in inefficiencies and increased energy loss.
Innovation Solution
An electrical module that includes a converter module generating an intermediate signal with a direct and rectified sinusoidal component, which is then converted by an inverter module, utilizing an H bridge and microcontroller-controlled switching means to minimize switching losses, and potentially featuring multiple regulator units connected in series or parallel for optimized control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the inverter module switches at short time intervals to construct the sinusoidal output signal, then the output signal can be generated, but significant switching losses occur due to high voltage switching
Solution Approach 1:
The patent introduces an intermediate signal from the converter module as a mediator between the power source and the inverter module. This intermediate signal has specific characteristics (formed of a direct component and a rectified sinusoidal component) that allow the inverter to operate more efficiently, reducing switching losses while maintaining output signal generation capability
Solution Approach 2:
The patent changes the parameters of the input signal to the inverter module by using an intermediate signal with specific composition (direct component + rectified sinusoidal component) instead of a standard DC signal. This parameter change enables the inverter to achieve the required output with reduced switching frequency and lower switching losses
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 reduces switching losses and improves the quality of the current injected into the power grid by extending switching time and reducing voltage levels, thereby enhancing the overall efficiency of the electrical module.
Implementation Method 1
a converter module arranged to convert the supply voltage into an intermediate signal formed of a direct component and a rectified sinusoidal component
Implementation Method 2
an inverter module arranged to use the intermediate signal and convert it into a sinusoidal signal compatible with a second signal of said second system
Data Source
AI summary
The invention concerns an electrical module for adapting a first signal of a first system to a second signal of a second system, including:an input arranged so that a power source can be connected thereto, said power source delivering a first signal, said first signal being a direct signal,a converter module arranged to convert the supply voltage into an intermediate rectified signal formed of a direct component and a sinusoidal component;an inverter module arranged to output a signal compatible with a second signal of a second system.