Tianjin UPS Power Supply Supplier, Tianjin EPS Emergency Power Supplier, Tianjin UPS Power Factory, Tianjin UPS Power Wholesaler. The EPS Emergency Power System mainly includes rectifier-chargers, battery packs, inverters, transfer switches, and system controllers. The inverter is the core component, typically using DSP or single-chip CPU for SPWM modulation control of the inverter section to achieve a good AC waveform output. The rectifier-charger's function is to charge the battery pack in a timely manner when the municipal power supply is normal. The inverter's role is to convert the stored DC power from the battery pack into AC power output when the municipal power supply is abnormal, providing stable and continuous power to the load equipment. The transfer switch ensures smooth switching between municipal power and inverter output. The system controller performs real-time control of the entire system, can issue fault alarm signals, and receive remote interlock control signals. It can also be remotely monitored through standard communication interfaces by a host computer.