TL;DR: A review of the most interesting solutions for single phase and low power applications is carried out in this article, where the major advantages and disadvantages are highlighted and the field of application is found.
Abstract: New recommendations and future standards have increased the interest in power factor correction circuits. There are multiple solutions in which line current is sinusoidal. In addition, a great number of circuits have been proposed with nonsinusoidal line current. In this paper, a review of the most interesting solutions for single phase and low power applications is carried out. They are classified attending to the line current waveform, energy processing, number of switches, control loops, etc. The major advantages and disadvantages are highlighted and the field of application is found.
TL;DR: In this article, a new method of defining reactive power under non-sinusoidal conditions is proposed, which consists of sub- dividing the current into components which would have the same waveform as the current in a resistance and either an inductance or a capacitance when the voltage is applied to them, and into a residual component.
Abstract: A new method of defining reactive power under non- sinusoidal conditions is proposed. It consists of sub- dividing the current into components which would have the same waveform as the current in a resistance and either an inductance or a capacitance when the voltage is applied to them, and into a residual component. An instrument for subdividing and measuring each current component and its corresponding power is described. The method permits the power system operator to determine if the possibility of improving the power factor by means of a shunt capacitance or inductance exists and to easily identify the proper value required to realize the maximum benefit.
TL;DR: In this article, a method for measuring a parameter of a power frequency current being carried by a power line is presented, which is based on transducing the current into a power voltage via an inductive coupler that couples a communications signal from the power line.
Abstract: There is provided a method for measuring a parameter of a power frequency current being carried by a power line. The method that includes (a) transducing a power frequency current flowing through a power line, into a power frequency voltage, via an inductive coupler that couples a communications signal from the power line, (b) separating the power frequency voltage from the communications signal, and (c) determining a value of a parameter of the power frequency current from the power frequency voltage. There is also provided a system and an apparatus for measuring the parameter.
TL;DR: A review of the most interesting solutions for single phase applications is carried out in this article, where the major advantages and disadvantages are highlighted and the field of application is found, attending to the line current waveform, energy processing, number of switches, control loops.
Abstract: New recommendations and future standards have increased the interest in power factor correction circuits. There are multiple solutions to this problem to obtain sinusoidal line current and in addition, a great number of circuits have been proposed with nonsinusoidal line current. In this paper, a review of the most interesting solutions for single phase applications is carried out. They are classified attending to the line current waveform, energy processing, number of switches, control loops, etc. The major advantages and disadvantages are highlighted and the field of application is found.
TL;DR: In this article, the authors interpreted reactive power as a time-domain reciprocating flow of energy, with a formulation that is valid for any periodic waveforms and showed that the current can be resolved into orthogonal components, and that the power components can be measured with practical instrumentation.
Abstract: Reactive power is interpreted as a time-domain reciprocating flow of energy, with a formulation that is valid for any periodic waveforms It is shown that the current can be resolved into orthogonal components, and that the current and power components can be measured with practical instrumentation