公开(公告)号：US4176392A

公开(公告)日：1979-11-27

申请号：US860366

申请日：1977-12-14

申请人： Donald L. Cronin ,  John J. Biess

发明人： Donald L. Cronin ,  John J. Biess

IPC分类号： H02M3/337 ,  H02M7/00

CPC分类号： H02M3/3378

摘要： An improved series inductor/parallel inverter power stage and power stagingethod for a transistor controlled DC-DC power converter in which the integrating capacitance is located in the output of the power stage transformer and the series inductor has a secondary winding connected across this capacitance for transferring stored energy from the inductor primary directly to the transformer output rather than through the transformer, and current flow through the transformer primary is controlled by two parallel, alternately conducting pulse-width-modulated transistors in a manner such that only a single transistor is located in the main current flow path at any given time. The improved power stage is characterized by reduced power dissipation and peak voltage stresses on the transistors, increased simplicity, and improved reliability.A DC-DC power converter having at least two improved power stages of the invention arranged in parallel and adjusted for conduction of preset fractions of the total power in phased relation.

摘要翻译： 用于晶体管受控DC-DC功率转换器的改进的串联电感器/并联逆变器功率级和功率分级方法，其中积分电容位于功率级变压器和串联电感器的输出端，具有连接在该电容上的次级绕组 将存储的能量从电感器初级直接传递到变压器输出而不是通过变压器，并且通过变压器初级的电流流动由两个并联的交替传导的脉冲宽度调制的晶体管控制，使得仅存在单个晶体管 在任何给定时间的主电流流路。 改进的功率级的特征在于降低了晶体管上的功率耗散和峰值电压应力，增加了简单性并提高了可靠性。 具有本发明的至少两个改进的功率级的DC-DC功率转换器被并联布置并被调整以便导通相分离相关总功率的预设分数。

公开(公告)号：US5170623A

公开(公告)日：1992-12-15

申请号：US646309

申请日：1991-01-28

申请人： Charles L. Dailey ,  Ralph H. Lovberg ,  Robert L. Sackheim ,  John J. Biess

发明人： Charles L. Dailey ,  Ralph H. Lovberg ,  Robert L. Sackheim ,  John J. Biess

IPC分类号： F02K9/74 ,  F02K9/97 ,  F02K99/00 ,  F03H1/00 ,  H02K44/00

CPC分类号： F03H1/0081 ,  F02K9/74 ,  F02K9/97 ,  H02K44/00

摘要： A hybrid chemical/electromagnetic propulsion system which combines thermal expansion of a chemically-reacted propellant with electromagnetic acceleration of the propellant to provide an efficient propulsion system that operates in the specific impulse I.sub.sp range of 800 to 2500 seconds. The hybrid chemical/electromagnetic propulsion system includes a reaction chamber, an expansion nozzle mounted to the exit of the reaction chamber, and an induction coil wound around a portion of the expansion nozzle. The reaction chamber supports the combustion or chemical reaction of a propellant to form high-temperature ionizable reaction products. The expansion nozzle then expands these high-temperature reaction products to generate thrust. The induction coil generates a varying electric and magnetic field which ionizes and magnetically accelerates the reaction products to generate additional thrust. A drive circuit supplies current to the induction coil in a manner that maximizes this additional thrust.

摘要翻译： 一种混合化学/电磁推进系统，其将化学反应的推进剂的热膨胀与推进剂的电磁加速相结合，以提供在800至2500秒的比脉冲Isp范围内操作的有效的推进系统。 混合型化学/电磁推进系统包括反应室，安装在反应室出口处的膨胀喷嘴和缠绕在膨胀喷嘴的一部分上的感应线圈。 反应室支持推进剂的燃烧或化学反应，形成高温可电离的反应产物。 膨胀喷嘴然后膨胀这些高温反应产物以产生推力。 感应线圈产生变化的电场和磁场，其电离并磁加速反应产物以产生额外的推力。 驱动电路以使该附加推力最大化的方式向感应线圈提供电流。