A Single-Phase Brushless 4 Slots-4 Poles Flux Switching Generator with Modular Rotor

Single-phase generators are applicable in the field of small and medium power to supply power for electrical networks of autonomous objects and private households. Small wind turbines with single-phase generators feeding the inverter's DC link have become widespread. Such systems are simple and quite reliable. However, a change in wind strength over a wide range leads to fluctuations not only in frequency, but also in the voltage level. This may be undesirable for sufficiently powerful installations of 5 kW or more, as it leads to fluctuations in the DC level at the inverter's input. It is also desirable to have regulation of the excitation flow when the load is powered directly from the output - for example, portable generators used in autonomous farms. This article proposes a simple and reliable 4 slots-4 poles design of a single-phase generator with a modular rotor. The difference from already known prototypes is the number of rotor poles and stator slots, as well as their geometric dimensions. This design is suitable for most types of loads and applications, as well as for powering the inverter's DC input for small wind turbines.