Abstract: This paper presents control strategy which allows for operation of the one-branch controlled three-phase rectifier with no rotor position detection (NRP). Combination of a proposed simplified control algorithm and low-cost rectifier can be an interesting reliable solution for permanent-magnet (PM) small-scale wind turbines or automotive alternators. The simplified structure of the rectifier significantly reduces the costs of building control system and improves its reliability. Mathematical relationships for the rectifiers' output power are discussed. The influence of new and classic control strategy on efficiency was experimentally verified. The paper ends with the description of advantages, disadvantages and limitations of the novel control method.
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