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This paper theoretically analyzes the compound control apparatus for current quality compensation which is designed as differentiation cascaded H bridge type with two modules: fundamental-frequency module and high-frequency module. The detection algorithm calculates the harmonic current and fundamental-frequency current of the load current which serve as the command current. For the purpose of eliminating...
By analyzing the methods of harmonic and reactive current detection based on the instantaneous reactive power theory, some improvements for the detection method of constructing two-phase in single-phase circuit is presented, and the key algorithm to obtain the important current components is presented too. By studying on the method of active current separation, a new detecting method for harmonic...
The instantaneous reactive power theory is widely used in the detection of harmonic and reactive current in three-phase circuit, and can also be used in single-phase circuit detection. This paper deducts the detection method in single-phase circuit by constructing two-phase system based on the instantaneous reactive power theory. An improved algorithm to obtain the key circuit components is presented...
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