解決方案介紹  Solution introduction：

鼎漢技術(shù)CRH3型動車組輔助電源系統(tǒng)解決方案，包含了單輔助變流器、充電機和單相逆變器。

The solutions for CRH3 EMU auxiliary power system of Dinghan Technology involve single auxiliary converter, charger and single-phase inverter.

-- 輔助變流器將牽引變流器中間直流環(huán)節(jié)的直流電轉(zhuǎn)換為三相440V/60Hz交流電，為車載設備提供中壓電源。

The auxiliary converter can convert DC in the intermediate DC link of the traction converter into three-phase 440V/60Hz AC, to provide medium voltage power supply for On-Board Unit.

-- 充電機將車上中壓母線的440V/60Hz三相交流電轉(zhuǎn)換成隔離的110V直流電，向列車上所有與充電機連接的直流負載供電，同時對蓄電池組進行充電。

The charger can convert the 440V/60Hz three-phase AC of the medium-voltage bus in a train into the isolated 110V DC, to supply power for all DC loads connected to the charger on the train, and charge storage battery pack.

-- 單相逆變器將列車110V直流電轉(zhuǎn)換成隔離的220V單相交流電，為車廂內(nèi)的負載提供穩(wěn)壓、穩(wěn)頻的純凈電源。

The single-phase inverter can convert the 110V DC of a train into isolated 220V single-phase AC, to provide voltage-stabilized and frequency-stabilized pure power supplies for loads in the train compartment.

方案應用  Solution application：

Dinghan Technology CRH3 EMU charger and single-phase inverter have been successfully used in CRH380BG Low Temperature EMUs.