Reactive Power Compensation Assembly with Dynamic Converter Selection
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Solution Overview
Problem
Existing power supply assemblies face inefficiencies in reactive power compensation, particularly in energy saver modes, where the number and configuration of converters used for reactive power compensation do not always optimize total efficiency.
Innovation Solution
The power supply assembly improves efficiency by selecting a combination of converters for reactive power compensation, ensuring each converter operates within its predetermined optimal efficiency range, and dynamically adjusting this combination based on changing load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If converters are used for reactive power compensation in energy saver mode, then reactive power compensation is achieved, but total efficiency of the power supply assembly is not optimized
Solution Approach 1:
The system dynamically adjusts the number and configuration of converters used for reactive power compensation based on changing load conditions. The control system monitors load changes and reconfigures converter operations in real-time to maintain optimal efficiency while providing required reactive power support.
Solution Approach 2:
The invention changes the operational parameters of converters by selecting specific combinations of converters for reactive power compensation tasks. By varying which converters perform compensation functions versus power conversion functions, the system optimizes overall efficiency while maintaining required reactive power levels.
2Device complexity
If a fixed number of converters is used for reactive power compensation, then system configuration is simple, but efficiency cannot be optimized across varying load conditions
Solution Approach 1:
The system transitions from static converter configuration to dynamic reconfiguration based on load conditions. The control system automatically adjusts which converters perform reactive power compensation versus power conversion, allowing efficiency optimization without manual intervention while adapting to varying operational requirements.
3Power
If converters operate outside their optimal efficiency range, then reactive power compensation capacity is increased, but energy efficiency deteriorates
Solution Approach 1:
The system uses only the necessary number of converters for reactive power compensation rather than all available converters. By selectively engaging specific converters based on current reactive power requirements, the system provides adequate compensation capacity while keeping other converters in high-efficiency power conversion mode, avoiding excessive energy loss.
Solution Approach 2:
The control system varies the operational state of individual converters, switching them between power conversion mode and reactive power compensation mode. This parameter change allows the system to maintain converters within their optimal efficiency ranges while still providing required reactive power support through coordinated operation.
Data Source
AI summary
A power supply assembly including a source connection system including a primary source connection, a load connection, a converter system including at least one converter controllable for reactive power compensation, an energy saving transfer route connecting the primary source connection electrically to the load connection, and bypassing the converter system, and a control system. The control system is adapted to provide an efficiency optimization operation including transferring energy through the energy saving transfer route, and controlling the converter system according to an optimal operating scheme that optimizes efficiency of the power supply assembly while keeping reactive power drawn from the source connection system within a required range, wherein the optimal operating scheme defines an optimal combination for the converters used for reactive power compensation such that each of the converters operates in a predetermined optimal efficiency range thereof.