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This study deals with photovoltaic power plant modelling and its integration within the distribution network. It presents a simulation model of a whole photovoltaic power plant including the solar cells, boost converter with maximal power point tracking, voltage-oriented control and inductor-capacitor-inductor (LCL) filter. In such a sense, the applied inverter has many advantages such as a controllable...
This paper presents a multi-loop control strategy with capacitor voltage differential and low pass filter feedback as inner loop, with P controller and voltage reference feedforward as outer loop for voltage-source grid-connected inverters standalone operation. A multi-loop controller with capacitor current feedback can effectively eliminate the inherent high-resonant peak of the output LC-filter...
This paper presents a new voltage references set for three-phase boost inverter. The proposed voltage reference set is applicable for any kind of differential inverters. Application of these reference set imposes lower peak voltage to switches in the reverse mode, as well as the lower peak voltage on the capacitors of inverter. In addition, it causes voltage rating reduction in elements. In this paper...
This paper proposes a coordinated control algorithm of UPFC and shunt capacitors/reactors. Operating UPFC with this algorithm can keep the voltage of voltage control target buses in the range of desired level and avoid inverter capacity limit problem. In order to maximize operational reserve of shunt inverter, the shunt capacitors/reactors is switched on or off and operating point of UPFC is changed...
A novel bi-directional buck-boost converter used for battery charging and discharging cooperated with a three-level half bridge inverter in a UPS is proposed. The operation of charging and discharging can be controlled respectively, and the capacitor voltage balance can be achieved based on the peak current control. The operating principle and parameter design of the converter are analyzed in detail...
The present paper proposes a series capacitive decoupling for an innovative universal power conditioner. Preliminarily a comparison with series inductive configuration is discussed. Control strategy is then proposed. The series capacitive configuration allows the same basic characteristics of the other one, obtaining the same dynamic performances and reference tracking precision. Moreover the decoupling...
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