公开(公告)号：US20160141967A1

公开(公告)日：2016-05-19

申请号：US14879249

申请日：2015-10-09

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chao YAN ,  Liping SUN ,  Lihao YAN

IPC: H02M3/335

CPC classification number: H02M5/14 ,  H02M1/12 ,  H02M3/33561 ,  H02M3/33576 ,  H02M7/08 ,  H02M7/10 ,  H02M2001/007 ,  H02M2001/008

Abstract: Embodiments of the present disclosure provide a direct current (DC) power supply system, comprising: a medium voltage AC switchgear, configured to distribute a medium voltage three-phase AC received from an external supply for a next stage; a phase-shift transformer serving as the next stage, coupled to the medium voltage AC switchgear, and configured to lower the medium voltage three-phase received and output four or more groups of low voltage three-phase AC; and an uncontrolled rectifying circuitry, comprising a plurality of uncontrolled rectifiers configured to receive the four or more groups of low voltage three-phase AC respectively and output a low voltage DC; wherein the four or more groups of low voltage three-phase AC have a predetermined phase difference between each other.

Abstract translation: 本公开的实施例提供了一种直流（DC）电源系统，包括：中压交流开关装置，被配置为分配从下一级的外部电源接收的中压三相AC; 用作下一级的相移变压器，耦合到中压AC开关装置，并且被配置为降低中压三相接收和输出四组或更多组低压三相AC; 以及不受控制的整流电路，包括多个不受控整流器，其被配置为分别接收所述四组或更多组低压三相AC并输出低电压DC; 其中所述四组或更多组低电压三相AC彼此之间具有预定的相位差。

公开(公告)号：US20140092634A1

公开(公告)日：2014-04-03

申请号：US13771690

申请日：2013-02-20

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chao YAN ,  Lihao YAN

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/3376 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491 ,  Y02P80/112

Abstract: The present application provides a mixed control method for a resonant converter, a resonant converter system and a mixed controller. When the resonant converter operates in a case where a voltage gain is less than a predetermined value, the method includes: setting a mixed control start frequency, a mixed control stop frequency and a slope of a phase-shifting angle; detecting an operating frequency of the converter; calculating a time delay of phase shifting according to the slope, the mixed control start frequency, the mixed control stop frequency and a resonant frequency of the resonant converter; and according to the time delay, the mixed control start and stop frequencies, generating a control signal to adjust the operating frequency and the phase-shifting angle of the resonant converter. The present application can realize a relatively low voltage gain and a small circuit loss, thereby the circuit efficiency may be improved.

Abstract translation: 本申请提供了一种用于谐振转换器，谐振转换器系统和混合控制器的混合控制方法。 当谐振转换器在电压增益小于预定值的情况下工作时，该方法包括：设置混合控制开始频率，混合控制停止频率和相移角度的斜率; 检测转换器的工作频率; 根据斜率，混合控制起始频率，混合控制停止频率和谐振变换器的谐振频率计算相移的时间延迟; 并根据时间延迟，混合控制启动和停止频率，产生一个控制信号来调节谐振转换器的工作频率和相移角。 本申请可以实现相对低的电压增益和小的电路损耗，从而可以提高电路效率。