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MODEL PREDICTIVE CONTROL OF A CONVERTER BASED ON PULSE WIDTH MODULATED SWITCHING PATTERNS
MODEL PREDICTIVE CONTROL OF A CONVERTER BASED ON PULSE WIDTH MODULATED SWITCHING PATTERNS
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机译:基于脉冲宽度调制开关模式的换流器模型预测控制
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摘要
A method for controlling a three-phase electrical converter including: selecting a three-phase optimized pulse pattern from a table of pre-computed optimized pulse patterns based on a reference flux; determining a two-component optimal flux from the optimized pulse pattern and determine a one-component optimal third variable; determining a two-component flux error from a difference of the optimal flux and an estimated flux estimated based on measurements in the electrical converter; determining a one-component third variable error from a difference of the optimal third variable and an estimated third variable; modifying the optimized pulse pattern by time-shifting switching instants of the optimized pulse pattern such that a cost function depending on the time-shifts is minimized, wherein the cost function aincludes a flux error term and a third variable error term, wherein the flux error term is based on a difference of the flux error and a flux correction function providing a flux correction based on the time-shifts and the third variable error term is based on a difference of the third variable error and a third variable correction function providing a third variable correction based on the time-shifts; and applying the modified optimized pulse pattern to the electrical converter.
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