Shared Inverter Power Storage System Voltage Transformation
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Solution Overview
Problem
The existing power storage systems face increased costs and installation complexities due to overlapping components when linking power storage power conditioners and PV power conditioners, leading to inefficiencies and higher costs.
Innovation Solution
A power storage system design that incorporates a voltage transformer and a power storage power conditioner, where the voltage transformer does not include a DC/AC converter, allowing for miniaturization and cost reduction by separating voltage transformation and conversion functions, and enabling communication for controlled operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If power storage power conditioner and PV power conditioner are linked, then power conversion capability is improved, but device complexity and installation area increase due to overlapping DC/AC inverter components
Solution Approach 1:
The patent merges the DC/AC inverter functions of both power storage power conditioner and PV power conditioner into a single shared inverter unit. This allows both conditioners to utilize the same inverter for AC power output, eliminating component overlap while maintaining full power conversion capability. The inverter is configured to receive DC power from either the power storage battery or PV panels and convert to AC power for grid or load use.
Solution Approach 2:
The shared DC/AC inverter is designed with universal functionality to handle power conversion from multiple DC sources (power storage battery and PV panels) to AC output. This multi-functional inverter can operate in various modes including battery discharge, PV generation, and combined operation, replacing the need for separate dedicated inverters for each conditioner.
2Adaptability or versatility
If power storage power conditioner and PV power conditioner are linked, then system functionality is improved, but installation area increases
Solution Approach 1:
The patent combines the physical footprint of overlapping components into a single integrated unit. The shared DC/AC inverter consolidates what would otherwise be two separate inverter installations, directly reducing the installation area required while preserving all power conversion functions for both power storage and PV systems.
3Adaptability or versatility
If power storage power conditioner and PV power conditioner are linked, then system capability is improved, but cost increases due to redundant components
Solution Approach 1:
The patent merges redundant DC/AC inverter components into a single shared unit, directly reducing the total component count and associated costs. By eliminating the duplication of inverters, the system reduces not only hardware costs but also installation and maintenance expenses, while maintaining full operational capability for both power storage and PV power conversion.
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 design achieves miniaturization, cost reduction, and increased conversion efficiency by eliminating redundant components and enabling controlled voltage transformation and conversion operations, thereby enhancing the overall power storage system performance.
Implementation Method 1
a first voltage transform part that transforms a voltage of the direct-current power input to the first input part into a first predetermined voltage
Implementation Method 2
a second voltage transform part that transforms the first predetermined voltage of the direct-current power input to the second input part into a second predetermined voltage
Implementation Method 3
a conversion part that converts the direct-current power input to the second input part into alternating-current power
Data Source
AI summary
A voltage transform part transforms the direct-current power input to an input part. A first input and output part outputs the transformed direct-current power to a battery unit and to which direct-current power is input from the battery unit. A conversion part converts the direct-current power input to the input part into alternating-current power. A second input and output part outputs the alternating-current power to a power system or a load and to which an alternating-current power is input from the power system. The conversion part converts the alternating-current power input to the second input and output part into direct-current power. The second voltage transform part transforms the direct-current power converted by the conversion part and transforms the direct-current power input to the first input and output part. The conversion part converts the direct-current power transformed by the second voltage transform part into alternating-current power.