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    • 12. 发明授权
    • Three-phase boost-buck power factor correction converter
    • 三相升压降压功率因数校正转换器
    • US08760128B2
    • 2014-06-24
    • US13349571
    • 2012-01-13
    • Ming XuChuanyun WangPeng Mao
    • Ming XuChuanyun WangPeng Mao
    • G05F1/00
    • H02M1/4216H02M1/4225Y02B70/126
    • A three-phase boost-buck PFC converter including three independent single-phase boost-buck PFC circuits respectively is provided, which are capable of performing PFC on each phase of the three-phase power. The single-phase boost-buck PFC circuit is composed of two single-phase boost-buck converters independently working in a positive and a negative half cycle of an input voltage, and the two single-phase boost-buck converters are connected in parallel at an input side, and are connected in series at an output side, and each of the single-phase boost-buck converters is composed of a front-end boost circuit and a back-end buck circuit connected in cascade. Compared to the existing technique, regardless of a boost mode or a buck mode, the conduction loss is effectively reduced, and the whole system efficiency is effectively improved.
    • 提供了分别包括三个独立的单相升压 - 降压PFC电路的三相升压降压PFC转换器,它们能够在三相电源的每个相上执行PFC。 单相升压降压PFC电路由独立工作在输入电压的正半周期和负半周期的两个单相升压降压转换器组成,两个单相升压降压转换器并联连接 输入侧,并且在输出侧串联连接,并且每个单相升压降压转换器由级联连接的前端升压电路和后端降压电路组成。 与现有技术相比,无论升压模式还是降压模式,导通损耗都有效降低,整个系统效率得到有效的提高。
    • 15. 发明申请
    • METHOD OF SCRAMBLING SIGNALS, TRANSMISSION POINT DEVICE AND USER EQUIPMENT USING THE METHOD
    • 使用该方法来消除信号的方法,传输点设备和用户设备
    • US20140071936A1
    • 2014-03-13
    • US14115325
    • 2011-09-29
    • Zhi ZhangMing XuMasayuki HoshinoDaichi ImamuraAkihiko Nishio
    • Zhi ZhangMing XuMasayuki HoshinoDaichi ImamuraAkihiko Nishio
    • H04L5/00
    • H04W72/044H04L5/0016H04L5/0051H04L25/0226H04L27/2613H04W72/121
    • Method of scrambling signals, transmission point device and user equipment using the method are provided. The method is for scrambling signals assigned on predetermined radio resources of at least one layer of resource blocks with the same time and frequency resources, and comprises the steps of: sending an ID table to a user equipment through higher layer signaling, the ID table being a subset of the whole ID space and containing available IDs for the user equipment; notifying the user equipment an ID in the ID table to be used through physical layer signaling or UE specific higher layer signaling; generating a random seed based on the notified ID; initializing a scrambling sequence by the random seed; and scrambling the signals with the initialized scrambling sequence. The method of the disclosure, by combining physical layer signaling and higher layer signaling, may notify the used group ID and the blind detection space to a UE, the blind detection for the UE is enabled and the signaling overhead is reduced.
    • 提供了使用该方法加扰信号,传输点设备和用户设备的方法。 该方法用于对具有相同时间和频率资源的至少一层资源块的预定无线电资源分配的信号进行加扰,包括以下步骤:通过较高层信令向用户设备发送ID表,ID表为 整个ID空间的子集,并包含用户设备的可用ID; 通过物理层信令或UE特定的较高层信令通知用户设备将要使用的ID表中的ID; 基于通知的ID生成随机种子; 通过随机种子初始化加扰序列; 并用初始化的加扰序列对信号进行加扰。 本发明的方法通过组合物理层信令和较高层信令,可以将所使用的组ID和盲检测空间通知给UE,使得UE能够进行盲检,信令开销降低。
    • 20. 发明申请
    • ISOLATED GATE DRIVER ADAPTED FOR PWM-BASED SWITCHING POWER SUPPLY
    • 隔离门驱动器适用于基于PWM的开关电源
    • US20130076406A1
    • 2013-03-28
    • US13624964
    • 2012-09-23
    • Ming XuJing-Peng ZhuJu-Lu SunZhang-He Nan
    • Ming XuJing-Peng ZhuJu-Lu SunZhang-He Nan
    • H03K17/691
    • H02M1/08H02M1/32H03K17/08122H03K17/161H03K17/691
    • An isolated gate driver including a driving control circuit, an isolated transformer, an anti-circuit and a secondary processing circuit is provided. The driving control circuit is configured to generate a driving PWM signal for driving a power switch tube. The isolated transformer has a primary winding and a secondary winding. The anti-circuit is connected between the driving control circuit and the primary winding of the isolated transformer, and is configured to suppress a variation of an induced voltage in the secondary winding of the isolated transformer when a duty cycle of the driving PWM signal is sharply decreased. The secondary processing circuit is connected in parallel with the secondary winding of the isolated transformer, and is configured to perform a voltage clamping action on a gate-source voltage of the power switch tube when the duty cycle of the driving PWM signal is sharply decreased.
    • 提供了包括驱动控制电路,隔离变压器,防电路和二次处理电路的隔离栅极驱动器。 驱动控制电路被配置为产生用于驱动电源开关管的驱动PWM信号。 隔离变压器具有初级绕组和次级绕组。 防电路连接在驱动控制电路和隔离变压器的初级绕组之间,并且被配置为当驱动PWM信号的占空比急剧减小时,抑制隔离变压器的次级绕组中的感应电压的变化 减少。 二次处理电路与隔离变压器的次级绕组并联连接,并且被配置为当驱动PWM信号的占空比急剧减小时,对功率开关管的栅极 - 源极电压进行钳位动作。