Vector Magnetic Hysteresis Loop and Magnetic Characteristic Analysis of Electrical Machines

In general, the magnetic characteristics of magnetic materials can be expressed by the relationship between the magnetic flux density vector and the magnetic field strength vector. The magnetic flux density vector and the magnetic field strength vector are rarely parallel but mostly have a spatial phase difference angle between them. Therefore, modeling of magnetic hysteresis characteristics for magnetic characteristic analysis needs to represent this relationship. For that purpose, the magnetic properties obtained by the conventional magnetic property measurement method are insufficient, and then a vector magnetic property measurement method that can measure vector behavior is necessary. three components. Vector magnetic characteristics complete the duality between the electrical properties (voltage, current, power factor angle) and the magnetic properties (magnetic flux density, magnetic field strength, spatial phase difference angle) of electrical devices. This paper presents a vector hysteresis loop that replaces the conventional hysteresis characteristic (scalar hysteresis loop).