CAJ | 학술논문

提出了一种新型的磁集成零电压零电流软开关移相全桥DC/DC变流器。该磁集成变流器将3个电感和1个变压器集成于同一磁心中,变压器的漏感同时用做储能电感,传统全桥电路中的输出滤波电感也被移去。因此,二次侧整流管可工作于零电流模式,整流管上的电压尖刺也可被输出电压箝位。另外,变压器中的励磁电流作为电流源为一次侧开关管的寄生电容充放电,因此一次侧开关管在全负载范围内均可实现零电压开通。与分立元件方案相比,该磁集成方案具有元件少、体积小、成本低和磁损小的优点。制作了300 W、350~400 V输入、12 V输出的样机,验证了理论分析的正确性。
제출료일충신형적자집성령전압령전류연개관이상전교DC/DC변류기。해자집성변류기장3개전감화1개변압기집성우동일자심중,변압기적루감동시용주저능전감,전통전교전로중적수출려파전감야피이거。인차,이차측정류관가공작우령전류모식,정류관상적전압첨자야가피수출전압겸위。령외,변압기중적려자전류작위전류원위일차측개관관적기생전용충방전,인차일차측개관관재전부재범위내균가실현령전압개통。여분립원건방안상비,해자집성방안구유원건소、체적소、성본저화자손소적우점。제작료300 W、350~400 V수입、12 V수출적양궤,험증료이론분석적정학성。
This paper proposed a new Integrated Magnetics（IM） zero voltage switching（ZVS） zero current switching（ZCS） full-bridge DC-DC converter,which integrates three inductors and one transformer into a single core.The leakage inductance of the transformer was used as energy storage inductance and the output filter inductor in conventional full bridge converter was removed.Therefore ZCS for secondary-side synchronous rectifiers（SRs） could be achieved,and the voltage spikes across SRs could be restrained by output voltage clamping.Since the magnetizing current of the primary winding was used as current source to charge the intrinsic capacitors of the switches,ZVS was achieved for all primary switches in entire load rang.Compared with the discrete solution,the proposed integrated converter has less components,smaller size,lower cost and reduced core losses.A 300 W prototype with 350~400 V input and 12 V output was built.Experimental results verified the operating principle of the proposed converters.