Now that computer and electronic control systems are widely established, many essential services (such as hospitals, traffic control, airports etc) and industrial / production facilities (including power stations) can be seriously disturbed by breaks in or contamination of their power supplies. This book is a comprehensive guide to the various types of uninterruptible power supply (UPS) available, and how a UPS can be specified and applied for safe and reliable functioning in the working environment.Therefore, for the suppression of harmonics the equivalent circuit diagram for asynchronous motors shown in Fig. ... The frequency response of the internal impedance is therefore expected to have a characteristic without irregularities or ... Alternatively, this machine can also be considered as a three-phase transformer with flux control, which only transmits ... 3.3 UPS systems with Uniblock converters Fig.
|Title||:||Uninterruptible Power Supplies|
|Author||:||John Platts, John St. Aubyn|
|Publisher||:||IET - 1992-01-01|