Used To Drive Power Of High-voltage Power Electronic Devices, High Voltage Isolation

According to the solid-state short-circuit current limiter, a new kind of drive power supply with multiple isolated outputs, which may be widely used in the middle and high voltage electrical equipment, is presented in this dissertation. The power supply is composed of current bump and second-side drive module. The load resonant mode is adopted in the design of the bump, and the bump's output approximates a sine wave high frequency current source. The super high-voltage cable used as the output line of bump, is served as the common one-turn primary winding for all the drive module, and the isolation voltage level between the outputs of the power supply can be set very high. The signal of the module is transmitted with fiber, which can reduce EMI significantly, and a good performance of electric insulation is gained. Furthermore, the power also has many significant advantages, such as small in size, light in weight, high efficiency and reliability, low cost and so on.After the principle of the main circuit of bump and the resonant load net having been discussed, a new type AC bus is put forward, and the selection of separate transformer for the secondary side drive module is discussed emphatically. At last, the current-type linear steady voltage circuit is given, and switch-mode one as well. The dissertation illustrates the simulation and experiment waveform for each unit circuit. These results prove that the power supply performance is improved by the proposed method, and overcome certain disadvantages, and so have a good use in the future.