公开(公告)号：US5402331A

公开(公告)日：1995-03-28

申请号：US21908

申请日：1993-02-24

申请人： Isao Takahashi ,  Masataka Mitani

发明人： Isao Takahashi ,  Masataka Mitani

IPC分类号： H02M1/00 ,  H02M1/42 ,  H02M3/335 ,  H05B41/28 ,  H05B41/295 ,  H02M7/217

CPC分类号： H02M1/425 ,  H02M3/335 ,  H05B41/28 ,  H05B41/295 ,  Y02B70/126

摘要： A power device of improved input power-factor, reduced high frequency noise with rush current upon power source connection restrained, reduced switching loss and improved circuit efficiency is provided by an arrangement in which an output of a full-wave rectifying circuit is subjected to a high-frequency interruption through a switching means, an energy accumulated in an inductor connected to the switching means is applied through another switching means to a smoothing capacitor, and a current from the full-wave rectifying circuit so as to flow to the capacitor is interrupted by still another switching means.

摘要翻译： 通过这样一种布置提供了一种改进的输入功率因数的电源装置，通过电源连接抑制冲击电流降低的高频噪声，降低的开关损耗和改善的电路效率，其中全波整流电路的输出经受 通过开关装置的高频中断，通过另一个开关装置将连接到开关装置的电感器中积累的能量施加到平滑电容器，并且来自全波整流电路的电流流过电容器被中断 通过另一种切换装置。

公开(公告)号：US4933831A

公开(公告)日：1990-06-12

申请号：US407093

申请日：1989-09-14

申请人： Isao Takahashi ,  Masataka Mitani ,  Minoru Maehara

发明人： Isao Takahashi ,  Masataka Mitani ,  Minoru Maehara

IPC分类号： H02M5/458 ,  H02M7/48 ,  H02M7/538 ,  H02M7/5387 ,  H05B41/28

CPC分类号： H02M1/4208 ,  H02M5/458 ,  H05B41/28 ,  H02M1/4233 ,  Y02B70/126

摘要： An inverter power supply with improved power factor comprises a source of low frequency AC voltage and an inverter having a pair of series connected first and second transistors controlled to alternately turn on and off at a high frequency for providing a high frequency AC voltage to a load. A diode-bridge full-wave rectifier is connected to provide a DC voltage which is charged to at least one capacitor which in turn provides a DC voltage input to the inverter. An inductor, which counteracts the capative reactance of the capacitor for improving the power factor, is inserted in series with the AC voltage source across the input of the diode-bridge rectifier. The first and second transistors of the inverter also operate to interrupt or chop at the high frequency a current fed through the inductor from the AC voltage source so as to charge the capacitor through the rectifier by the inductor. During each one cycle of the AC voltage from the AC voltage source, the first and second transistors are both serve to chop the current through the inductor for charging the capacitor as well as to provide the current to the load. Further, the rectifier shares at least two diodes of the inverter for establishing a loop for charging the capacitor.

公开(公告)号：US4564897A

公开(公告)日：1986-01-14

申请号：US566986

申请日：1983-12-30

申请人： Futoshi Okamoto ,  Masataka Mitani

发明人： Futoshi Okamoto ,  Masataka Mitani

IPC分类号： B65G57/18 ,  B65G47/29 ,  B65G47/88 ,  H02M3/338 ,  H05B41/28 ,  H02M7/537

CPC分类号： H05B41/28 ,  B65G47/8815 ,  B65G47/8846 ,  B65G47/8884 ,  H02M3/3387 ,  B65G2205/04 ,  Y02P70/30

摘要： A power source for providing a high frequency ac output voltage is provided with a rectifier, a smoothing circuit with an inductor and a smoothing capacitor, and an inverter having a switching device for switching the input dc voltage from the rectifier to provide a high frequency ac voltage output with reduced ripple. Also included in the smoothing circuit is a charge storage device by the operation of which the inductor receives electromagnetic energy from the current therein when the switching device is switched on and electromagnetic energy is fed to the smoothing capacitor to charge the same when the switching device is switched off, with the resulting voltage developed across the capacitor being applied to the inverter input. The charge storage device includes the inductor of the smoothing circuit and the switching device common to the inverter, such that the charge storage device is of the chopper-type which enables the inductor to be reduced to a smaller value while allowing it to retain a high power factor, and such that it can be readily incorporated in the power supply without requiring any additional switching devices and without undue increase in the component costs.

摘要翻译： 提供高频交流输出电压的电源设置有整流器，具有电感器的平滑电路和平滑电容器，以及具有用于切换来自整流器的输入直流电压以提供高频交流的开关装置的逆变器 电压输出，纹波减小。 平滑电路中还包括电荷存储装置，当开关装置接通时，电感器从其中的电流接收电磁能，并且当开关装置为 关断，电容器上产生的电压被施加到逆变器输入端。 电荷存储装置包括平滑电路的电感器和逆变器公共的开关装置，使得电荷存储装置是斩波器型，其使得电感器能够被减小到更小的值，同时允许其保持高电平 功率因数，并且使得其可以容易地并入电源而不需要任何额外的开关装置，并且不会过度增加部件成本。