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The rotary type electromagnetic actuator is often used in the electromagnetic mechanical components design, such as high-sensibility switch, signal electromagnetic relay, and so on. This type of actuator is required to have high conversion speed and action frequency, high signal reliability, and low power consumption per volume. In this paper, a new type of rotary electromagnetic actuator with permanent...
The enclosed isolated phase bus-bar (EIPB), which is the first power transmission part of synchronous generator output, plays an important role in the stability of the system in short circuit conditions. The section shape of bus-bar has very big relation with the dynamic stability of EIPB. In this paper, an analytical calculation model of EIPB is analyzed firstly. Based on the analytical model, the...
DC solenoid electromagnetic contactor is widely used in electrical vehicles, airplanes, trains and other 270v high voltage DC power supply system. Due to its special working environment, the limitation of the volume and weight of the contactor is strict. This requires the contactor to have excellent shock absorption and breaking capacity. The static electromagnetic calculation model of one type of...
Working characteristic of the permanent magnet (PM) is a key point of PM relays design. Soft magnetic material and coil will effect the working characteristic of PM. In order to analyze the effect of coil, a combined three-subsection PM in close magnetic circuit model (CTPMC) is built based on the equivalent magnetic circuit, and its theoretical model is established under the magnetic potential effect...
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