| 摘要 |
An IGBT(Integrated Gate Bipolar Transistor) electric drive type UPS with a semiconductor type electronic(TRIAC and SCR) control box is provided to prevent harmonics and electrical ripple by embedding an EMI(Electromagnetic Interference) filter in bypass. A current trip unit for a circuit breaker controls an inverter and a converter by applying a frequency phase with an advanced semiconductor by using an isolation transformer and communicating an input/output function of transmitting and receiving a variable signal, transfers input/output harmonics through electronization, and includes a semiconductor type electronic control box of various apparatuses including display and a control technique of various apparatuses by a DSP(Digital Signal Processing) method. |
