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Current unbalance is an important issue in multiphase dc-dc converters. In this paper, three types of three-phase bidirectional dc-dc converters are introduced. Comparing to other two types of converters, the Y-connection type converter reduces the current mismatch significantly due to the inherent current sharing capability. To additionally alleviate current mismatch, a small signal method is applied...
For a small distributed generation (DG) system, low price, high performance, and high reliability are three important factors required to make the system marketable. In this paper, to acquire a cost-effective DG system, a comprehensive control scheme with a proportional-integral (PI) current controller, a predictive algorithm, and real-time sampling techniques is presented to control a three-phase...
In this paper, an AC current sensorless control scheme of three-phase PWM rectifier is proposed. A method for reconstructing the AC currents from the DC-link current and switching state is given. A method of modifying the switching state of PWM rectifier is given when the input currents cannot be reconstructed. The control system based on SVPWM includes two PI controllers which are used to regulate...
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