發明
中華民國
102141533
I 495244
直流雙向電源轉換系統及其電路
國立清華大學
2015/08/01
本發明揭露一種直流雙向電源轉換系統及其電路,此直流雙向電源轉換系統包含一第一電路、一電容式切換電路及一變壓器,第一電路包含二個電感及二個開關,電容式切換電路包含四個電容及四個開關,變壓器係電性耦接此第一電路及電容式切換電路,當第一電路被施予一低電壓時,此直流雙向電源轉換系統進入一升壓模式以供給能量給電容式切換電路中之負載,而當電容式切換電路被施予一高電壓時,此直流雙向電源轉換系統進入一降壓模式供給能量給第一電路中之負載,此系統能儲存能量於交錯式電容上以提升電能轉換效率並同時降低各開關所承受之跨壓 The invention discloses a bidirectional dc-dc converter system and circuit thereof. The bidirectional dc-dc converter system comprises a first circuit, a switched capacitor circuit, and a transformer. The first circuit comprises two inductors and two switches. The switched capacitor circuit comprises four capacitances and four switches. The transformer is electrically coupled with the first circuit and the switched capacitor circuit. When the first circuit is supplied with a low voltage, the bidirectional dc-dc converter system enters a boost mode to supply energy to a load of the switched capacitor circuit. On the other hand, when the switched capacitor circuit is supplied with the high voltage, the bidirectional dc-dc converter system enters a buck mode to supply energy to another load of the first circuit. The system can both store energy in the switched capacitors for increasing the voltage conversion ratio and reduce voltage stresses of active switches simultaneously.
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