Single-phase inverter voltage control and parallel circulation current suppression

Li, Hongbo; Yu, Jun; Xiong, Jian; Shan, Hongtao

doi:10.1109/ipemc.2009.5157638

Cited by 2 publications

(1 citation statement)

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“…Considering that every DG unit is an agent in the multiagent system, the decentralized coordinated control with multiagent consensus protocol is used in this paper. In addition, because slight differences in phases and amplitudes of the inverters output voltages can cause large circulating currents [19], circulating currents are not well suppressed only by controlling the output voltage amplitude. A new droop control based on the angle of the output voltage, referred to as angle droop, is proposed and has more advantages than frequency droop control [20,21].…”

Section: Introductionmentioning

confidence: 99%

Modeling Single-Phase Inverter and Its Decentralized Coordinated Control by Using Feedback Linearization

Han¹,

Sun

Ma³

et al. 2014

Mathematical Problems in Engineering

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It is a very crucial problem to make a microgrid operated reasonably and stably. Considering the nonlinear mathematics model of inverter established in this paper, the input-output feedback linearization method is used to transform the nonlinear mathematics model of inverters to a linear tracking synchronization and consensus regulation control problem. Based on the linear mathematics model and multiagent consensus algorithm, a decentralized coordinated controller is proposed to make amplitudes and angles of voltages from inverters be consensus and active and reactive power shared in the desired ratio. The proposed control is totally distributed because each inverter only requires local and one neighbor’s information with sparse communication structure based on multiagent system. The hybrid consensus algorithm is used to keep the amplitude of the output voltages following the leader and the angles of output voltage as consensus. Then the microgrid can be operated more efficiently and the circulating current between DGs can be effectively suppressed. The effectiveness of the proposed method is proved through simulation results of a typical microgrid system.

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Section: Introductionmentioning

confidence: 99%

Modeling Single-Phase Inverter and Its Decentralized Coordinated Control by Using Feedback Linearization

Han¹,

Sun

Ma³

et al. 2014

Mathematical Problems in Engineering

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Parallel PCS interconnection current surge elimination technique using coupled inductor

Choe

Byen

et al. 2014

2014 IEEE International Conference on Industrial Technology (ICIT)

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In this paper, coupled inductor method in parallel operation of PCS is proposed. In coupled inductor the primary and secondary currents flow in the same direction, the total flux total inductance is cancelled. However, when the currents flow in the opposite direction, each flux becomes an individual inductor. Aforementioned characteristic is adopted in parallel operation of PCS. Abnormal current is blocked by coupled inductor which is barred to connect grid code. A design guide is suggested by PCS's capacity and the circulation current duration time. The proposed design is verified through the hardware implementation and experimental results that show the effectiveness of variance reduction.

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Single-phase inverter voltage control and parallel circulation current suppression

Cited by 2 publications

References 0 publications

Modeling Single-Phase Inverter and Its Decentralized Coordinated Control by Using Feedback Linearization

Modeling Single-Phase Inverter and Its Decentralized Coordinated Control by Using Feedback Linearization

Parallel PCS interconnection current surge elimination technique using coupled inductor

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