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    • 2. 发明申请
    • BIDIRECTIONAL ELECTRICAL SIGNAL CONVERTER
    • 双向电信号转换器
    • WO2015042332A3
    • 2015-11-12
    • PCT/US2014056430
    • 2014-09-19
    • UNIV INDIANA RES & TECH CORP
    • IZADIAN AFSHIN
    • H02M7/79
    • H02M7/797H02J3/28H02J7/022H02M2007/2195H02M2007/4815Y02B70/1408Y02B70/1441
    • A bidirectional AC-to-DC and DC-to-AC circuit includes a first inductor- capacitor (LC) circuit connected to an AC power source, a transistor synchronized with the AC power source signal, a second LC circuit electrically connected to the synchronized transistor and the first inductor-capacitor circuit, a high-frequency switching transistor electrically connected to the second inductor-capacitor circuit and a direct current (DC) load, and a controller connected to the high-frequency switching transistor. The controller identifies an error between a measured DC output signal and a predetermined DC output signal that is applied to the DC load, and adjusts a duty cycle of a pulse width modulation (PWM) switching signal for the high- frequency transistor to reduce the identified error.
    • 双向AC-DC和DC-AC电路包括连接到AC电源的第一电感 - 电容(LC)电路,与AC电源信号同步的晶体管,电连接到同步电路 晶体管和第一电感器 - 电容器电路,电连接到第二电感器 - 电容器电路和直流(DC)负载的高频开关晶体管,以及连接到高频开关晶体管的控制器。 控制器识别测量的DC输出信号与施加到DC负载的预定DC输出信号之间的误差,并且调整用于高频晶体管的脉宽调制(PWM)切换信号的占空比以减少识别的 错误。
    • 3. 发明申请
    • CIRCUIT AND METHOD FOR MULTIPHASE OPERATION OF AN ELECTRICAL MACHINE
    • 电路及其操作方法电机多相
    • WO2016155694A3
    • 2016-11-17
    • PCT/DE2016000137
    • 2016-03-30
    • HOCHSCHULE OSTWESTFALEN-LIPPE
    • AUSTERMANN JOHANNBORCHERDING HOLGER
    • H02M7/5387B60L7/10H02M7/79H02P27/08
    • H02M7/53871B60L7/10B60L11/1842B60L15/007B60L2240/526H02M7/79H02M2001/007H02P2101/40
    • The invention relates to a circuit and to a method for operating an electrical machine (M) connected to at least three phases (L1, L2, L3) of a power supply network by means of a frequency converter (1) that has a DC link (3), wherein, by means of a synchronous inverter (7) that is actuated by a DC chopper (6) and comprises two bridge halves switching the positive and the negative half-waves respectively, the energy generated by said machine (M) is fed back into the power supply network. According to the invention, the synchronous inverter (7) has an asymmetrical design such that, to switch the potential tapped from the DC link (3) by the DC chopper (6), switching is carried out by a first bridge half (8) that consists of thyristors (S1, S3, S5) as electronic switches, and such that the second bridge half (9) comprises reverse-blocking electronic switches (S2, S4, S6) able to be switched off.
    • 在一个电路和用于通过与一个直流电压中间电路连接的频率转换器(1)操作的电力网的至少三个相(L1,L2,L3)的方法(3)的电机(M),其中(从一个DC斩波器 6)驱动同步反相器(7)具有两个分别正和负半波开关桥半部从机器(M)反馈所产生的能量是在电网中,同步式转换器(7)非对称地构成,使得对于的开关 来自直流电压中间电路(3)的螺纹电位的DC-DC转换器(6)从第一半桥切换晶闸管(S1,S3,S5),其为电子开关,并且所述桥的第二半部(9)脱离接合,反向阻断电子开关(8)(S2 具有S4,S6)。