Development of a Hybrid Excitation Single-Phase Synchronous Generator Using Negative-Phase-Sequence field and Permanent magnet Field

永磁同步发电机具有转子结构简单、效率高等优点。然而，由于PM通量是恒定的，气隙通量难以控制。另一方面，绕线转子同步发电机可以通过励磁电流来控制气隙磁通。因此，如果能够开发出具有永磁绕线转子的同步发电机，将极大地提高这类发电机的实际应用潜力。这种混合励磁单相同步发电机与传统的永磁或绕线转子同步电机相比具有明显的优势。所提出的混合励磁单相同步发电机的永磁转子部分将提供高效率，而绕线转子部分将允许真正的磁场调节和磁场增强操作。与其他类型的同步机不同，所提出的混合励磁单相同步发电机具有一个永磁体和一个绕线磁场分别安装在同一轴上。在本报告中，描述了混合励磁单相同步发电机的性能。制作了一台0.5kVA、100V、60Hz的两极实验机。出于测试目的，原型机器由3.7kW感应电机驱动。示出了当原型机器以3，600分钟驱动时的电阻负载特性<-1>。通过调节励磁电流可以在很大程度上控制电枢电压。

Permanent-magnet(PM) synchronous generators have several advantages, including simple rotor structures and high efficiency. However, because the PM flux is constant, the air gap flux is difficult to control. On the other hand, wound rotor synchronous generators can control the air gap flux by means of the field current. Therefore, if a synchronous generator with the features of a PM and wound rotors were to be developed, it would enhance the practical application potential of such generators.The author proposes a hybrid excitation single-phase synchronous generator with a PM and wound rotors. This hybrid excitation single-phase synchronous generator has distinct advantages over conventional PM or wound rotor synchronous machines. The PM rotor part of the proposed hybrid excitation single-phase synchronous generator would provide high efficiency, and the wound rotor part would allow true field regulation and field strengthening operation.Unlike other types of synchronous machines, the proposed hybrid excitation single-phase synchronous generator has one PM and one wound field separately mounted on the same shaft.In this report, the performance of a hybrid excitation single-phase synchronous generator is described. A two-pole experimental machine was made with 0.5kVA, 100V, and 60Hz. For test purposes, the prototype machine was driven by a 3.7kW induction motor. The resistance load characteristics when the prototype machine is driven at 3,600 min^<-1> are shown. The armature voltage can be largely controlled by adjusting the field current.