AC Charging Pile Phase Switching for Variable Photovoltaic Power
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Solution Overview
Problem
Existing alternating current charging stations operate independently and fail to adapt their output power in real time to available photovoltaic power, limiting their widespread use.
Innovation Solution
A renewable energy charging system, alternating current charging station, and associated charging method that measure available input power and adjust output power by switching between single-phase and three-phase power, optimizing energy efficiency and carbon balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the alternating current charging station operates independently without real-time photovoltaic power acquisition, then the device complexity is reduced, but the adaptability to renewable energy input deteriorates
Solution Approach 1:
The charging station implements real-time feedback by continuously acquiring photovoltaic power capacity data and using this information to dynamically adjust its output power. The controller receives power capacity information from the photovoltaic system and modifies charging parameters accordingly, creating a closed-loop control system that adapts to varying renewable energy input conditions
Solution Approach 2:
The charging station transitions from static independent operation to dynamic adaptive operation. The output power is no longer fixed but dynamically adjusted based on real-time photovoltaic power capacity measurements, allowing the system to flexibly respond to changing renewable energy availability and grid conditions
2Ease of operation
If the charging station does not adapt output power to available input power, then the ease of operation is improved, but the energy efficiency deteriorates
Solution Approach 1:
The charging station automatically changes operational parameters including output power level and phase configuration (single-phase vs. three-phase) based on measured available input power. The system adjusts these parameters without user intervention, maintaining ease of operation while optimizing energy efficiency by matching output to actual renewable energy availability
3Adaptability or versatility
If the charging station switches between single-phase and three-phase power based on available input power, then the adaptability to input power conditions is improved, but the device complexity increases
Solution Approach 1:
The charging station employs dynamic phase switching capability, automatically transitioning between single-phase and three-phase power output modes based on real-time assessment of available input power. This dynamic adaptation allows the system to optimize power delivery according to renewable energy availability while managing complexity through automated control logic
Data Source
AI summary
A renewable energy charging system, an alternating current charging station and a charging method applied to the alternating current charging station are provided. The method includes: measuring an available input power of a system where the alternating current charging station is arranged when the alternating current charging station is operating in a power tracking mode; controlling the alternating current charging station to supply single-phase power to an electric vehicle through a charging gun of the alternating current charging station when the measured available input power is greater than or equal to a single-phase threshold and less than a three-phase threshold, where the single-phase threshold is less than the three-phase threshold; and controlling the alternating current charging station to supply three-phase power to the electric vehicle through the charging gun when the measured available input power is greater than or equal to the three-phase threshold.