METHOD AND SYSTEM FOR PREDICTING ELECTRICAL STATE QUANTITY OF UNINTERRUPTIBLE POWER SUPPLY (UPS) SYSTEM, AND UPS SYSTEM CONTROL METHOD AND UPS SYSTEM
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United States of America Patent
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Issued Date -
Feb 15, 2024
app pub date -
Jun 17, 2022
filing date -
Nov 30, 2021
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Abstract
The present invention discloses an electrical state quantity prediction method and system and a control method and system for a UPS system. In terms of UPS system control strategies, relationships between predicted values of dynamic variables of the UPS system and switch variables of switch tubes are first obtained through a discrete model of the UPS system, then a target optimization control function is constructed based on MPC (Model Predictive Control), and finally, optimal switch variables at each time are obtained by traversing cost values Q of the target optimization control function in various switch states. The method of the present invention solves problems of complex cooperative control, difficult control optimization and the like in a multi-converter system, and improves work efficiency of a high-power UPS system and stability of the control system.
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