The first polyphase system a look back at two-phase power for AC distribution

Blalock, Thomas J.

doi:10.1109/mpae.2004.1269626

Cited by 12 publications

(3 citation statements)

References 4 publications

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“…1-a). It can be seen that, as expected, (7) uses P to calculate the balanced active currents, and Q is similarly used to obtain the balanced reactive current (8). Additionally, as aforementioned, the unbalanced active currents (9) are calculated based on the phase conductances (i.e., obtained by means of Pm and 𝑉 𝑚 2 ) and by considering the equivalent conductance of the circuit.…”

Section: A Power and Current Decompositionmentioning

confidence: 90%

“…Nonetheless, for what concerns the topology of two-phase three-wire (2Φ3w) grids (i.e., comprised of two phases plus neutral conductor), a limited number of discussions exists due to the particular application of such systems. Electrical grids based on two-phase power are considered to be the first poly-phase systems [8], and the 2Φ3w topology is still currently found in distribution power systems over the world [9]- [11] (i.e., mostly for residential and rural applications). It is generally an extension of three-phase grids.…”

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confidence: 99%

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CPT-Based Control Strategy for a Two-Phase Three-Wire Pv Inverter: a Multifunctional Perspective and a Comprehensive Review

Alonso¹,

Oliveira²,

Brandão³

et al. 2022

Eletrônica de Potência

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Multifunctional inverters play an important role in electrical grids due to their capability to provide active power conversion from photovoltaic (PV) systems, as well as by concomitantly offering ancillary services that provide grid support and power quality improvement. Although control strategies for such inverters have been extensively explored for applications in single-and threephase grids, their consideration for the two-phase threewire topology has been superficially discussed in literature. Thus, first, this paper contributes to the literature by presenting a comprehensive review about the control of power electronic inverters in two-phase threewire grids. As second contribution, this paper proposed a flexible control strategy based on the Conservative Power Theory capable of adequately synthesizing control references for a PV-based multifunctional inverter operating in a two-phase three-wire grid. Additionally, power quality services can be selectively offered by the inverter to achieve compensation of reactive, harmonic and unbalance current terms, as well as providing reduction in neutral currents. Hardware-in-the-loop experimental results comprising a multifunctional PV inverter under several scenarios of operation are shown to demonstrate and validate the flexibility of the method.

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Section: A Power and Current Decompositionmentioning

confidence: 90%

mentioning

confidence: 99%

CPT-Based Control Strategy for a Two-Phase Three-Wire Pv Inverter: a Multifunctional Perspective and a Comprehensive Review

Alonso¹,

Oliveira²,

Brandão³

et al. 2022

Eletrônica de Potência

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show abstract

“…In spite that the generation and transmission of electric power are done by means of the threephase ac system, today, the development of the two-phase system is still continued mainly to split-single-phase IM motor supply that is documented in this chapter and given references. So, the first venture into the realm of polyphase electric power has used only two alternating current phases rather than three but with pulsating power flow to motor in contrast to constant power of three-phase system [1]. In regard to topologies of the two-phase inverters, mostly three-leg ones with six switches or two legs with four switches are used.…”

Section: Introductionmentioning

confidence: 99%

Two‐Phase Inverters with Minimum Switching Devices

Dobrucký¹,

Laskody²,

Konarik³

2017

Recent Developments on Power Inverters

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The chapter deals with two-phase inverters with minimum switching devices whereby the main emphasis is devoted to 'minimum switches' converter topologies and control of passive load as well as split-single-phase induction motor. Such a converter consists of one-leg half-bridge matrix converter and the ac neutral point network as a new type of converter with two phase outputs loading the resistive-inductive or motoric loads. As harmonic content of the voltage of both phases gives very high value of total harmonic distortion (THD), roughly 86%, the current waveforms should be improved by using serial LC filter that brings much more suitable value of THD. Besides, the running capacitor creating needed phase shift (90 ) is electronically switched due to varied load. Analysis and modeling of such a new type of single-leg ac/ac converter with two phase outputs are done. The proposed topologies were simulated by Matlab/Simulink and verified in an LT spice environment. Worked-out simulation results are in good agreement with theoretical assumptions and make possible to give recommendation for the fair and right design of the chosen type of converter. Combination of mentioned measures brings a good quality of output quantities of converter and represents the main contribution of the chapter.

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Survey on Isolated Microgrid Prognostics and Health Management

Wang

Yang

2022

2022 2nd International Conference on Electrical Engineering and Control Science (IC2ECS)

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The first polyphase system a look back at two-phase power for AC distribution

Cited by 12 publications

References 4 publications

CPT-Based Control Strategy for a Two-Phase Three-Wire Pv Inverter: a Multifunctional Perspective and a Comprehensive Review

CPT-Based Control Strategy for a Two-Phase Three-Wire Pv Inverter: a Multifunctional Perspective and a Comprehensive Review

Two‐Phase Inverters with Minimum Switching Devices

Survey on Isolated Microgrid Prognostics and Health Management

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