Reactive Power Diagram Of Purely Resistive Load Single-phase Phase-controlled Rectifier

The AC power theory was originally established on the premise of single-phase sine and three-phase sinusoidal balance,and each power component under sine conditions has a clear physical meaning.However,as a large number of inverters and other converters are put into use,the nonlinear load in the system also increases,resulting in the traditional power theory is difficult to apply in new conditions(such as reactive power in phase-controlled rectifier circuit is not applicable Sexual),unable to accurately explain some power phenomena.It is becoming more and more important to develop new power studies under non-sinusoidal conditions in order to solve the phenomenon of inapplicability of existing power theory..According to the applicable conditions of the power theory,the traditional sine power theory and the current popular non-sinusoidal power theory are studied.The definition of each power in the sine power theory is already complete.The power theory under non-sinusoidal conditions is still not available Can be universally accepted and approved.At first,This article briefly introduces the development history of power theory,points out the challenges that need to be faced in power theory discovery,It also mentions the power inapplicability of existing power theory in phase-controlled rectifier circuits.Secondly,the power theory of sine condition and several common non-sinusoidal power theories are analyzed and introduced respectively,and the advantages and disadvantages of each power theory and its applicable occasions are explained.Then based on the existing two-dimensional graphics,how to construct three-dimensional visualization graphics,using three-dimensional graphics and its projection to analyze the power components of the phase-controlled rectifier circuit,based on which the definition of pseudo reactive power is proposed.Then use the graphic method to analyze the single-phase half-wave pure resistive load phase-controlled rectification power components,and on this basis proposed fundamental reactive power and pseudo-non-functional.Comparing with the results of several common power theory calculations under different conduction angles,it is concluded that the graphical calculation of power components is more concise and can explain the power inapplicability of single-phase half-wave purely resistive load phase-controlled rectifier circuits.phenomenon.On the basis of the above,the graphic method and pseudo reactive power are applied to a single-phase full-wave pure resistance phased controlled rectifier circuit.By analyzing the three-dimensional figures and their projection patterns under different conduction angles,the corresponding active power and pseudo-reactive power can be obtained.Power and fundamental reactive power.Comparing with the existing power calculation results under several common non-sinusoidal conditions,it is found that the graphic method is not only applicable to a single-phase half-wave phased rectification circuit,but also applicable to a single-phase full-wave phased rectification circuit.When calculating using the graphical method,no complicated mathematical transformation is required,and only the area of the corresponding projected figure can be calculated,and it is easy to compensate.Finally,the paper makes a summary analysis of the full text,points out the deficiencies in the research process,and puts forward some suggestions for exploring the reactive power in the phase-controlled rectifier circuit.