3 phase online ups uninterruptible power supply electrical Circuit knowledge
Provide knowledge of UPS uninterruptible power supply, understand the classification of UPS uninterruptible power supply and UPS electrica Circuit, etc.
In the power frequency UPS, the commonly used SCR polyphase phase-controlled rectifier is a 12-phase two-phase superimposed rectifier, and the 18-phase three-phase superimposed rectifier and the 24-phase four-phase superimposed rectifier may be used. Their characteristic values are compared in Table 1. It can be seen from this table that when the UPS is working at…
This site uniformly uses SPWM control technology for introduction for two reasons: one is to facilitate the comparison of different schemes; the other is because it is the most basic control technology. Other control technologies are derived from SPWM control technology. With the development of control theory and functional technology, various microcontrollers with excellent performance…