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公开(公告)号：US4200908A
公开(公告)日：1980-04-29
申请号：US892790
申请日：1978-04-03
Applicant: Anatoly Y. Kalinichenko , Valentin M. Vlasov , Grigory E. Kiksman
Inventor： Anatoly Y. Kalinichenko , Valentin M. Vlasov , Grigory E. Kiksman
CPC classification number: H02M1/0845 , H02M3/139
Abstract: A device for digital control of a polyphase thyristor-pulse converter comprises a master oscillator connected to a clock pulse counter. The clock pulse counter is connected to the power thyristors of the thyristor-pulse converter through a decoder for time-constant pulse trains. The device also comprises a control unit connected to a bidirectional pulse counter. Furthermore, the device comprises decoders for time-shifted pulse trains, each decoder having inputs connected to the logical outputs of the clock pulse counter and having outputs connected to the other power thyristors of the thyristor-pulse converter.
Abstract translation: 用于多相晶闸管脉冲转换器的数字控制的装置包括连接到时钟脉冲计数器的主振荡器。 时钟脉冲计数器通过用于时间恒定脉冲串的解码器连接到晶闸管脉冲转换器的功率晶闸管。 该装置还包括连接到双向脉冲计数器的控制单元。 此外，该装置包括用于时移脉冲串的解码器，每个解码器具有连接到时钟脉冲计数器的逻辑输出的输入，并具有连接到晶闸管 - 脉冲转换器的其他功率晶闸管的输出。
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公开(公告)号：US4017744A
公开(公告)日：1977-04-12
申请号：US642814
申请日：1975-12-22
Applicant: Frederick O. Johnson
Inventor： Frederick O. Johnson
CPC classification number: H02M1/0845
Abstract: A digital pulse generator for firing thyristors in a polyphase converter system is described in an hybrid analog-digital and in an all digital form. A phase locked oscillator associated with a digital counter generates timing waveforms synchronized with the phase lines to establish firing angles in relation to a reference signal. Each firing pulse triggers the logic circuit of a distributor and a multiplexer is coupled with such logic circuitry in order to insure that the proper timing waveform is selected so as to match the selection of the next thyristor to be fired.
Abstract translation: 用于在多相转换器系统中烧制晶闸管的数字脉冲发生器以混合模拟数字和全数字形式进行描述。 与数字计数器相关联的锁相振荡器产生与相位线同步的定时波形，以建立与参考信号相关的触发角。 每个触发脉冲触发分配器的逻辑电路，并且多路复用器与这种逻辑电路耦合，以便确保正确的定时波形被选择以匹配要被点火的下一个晶闸管的选择。
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公开(公告)号：US3391323A
公开(公告)日：1968-07-02
申请号：US44420465
申请日：1965-03-31
Applicant: UNITED AIRCRAFT CORP
Inventor： THOMAS IKEDA
CPC classification number: H02M1/0845 , H02M7/483
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公开(公告)号：US12015345B2
公开(公告)日：2024-06-18
申请号：US18229755
申请日：2023-08-03
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Naman Bafna , Preetam Charan Anand Tadeparthy , Ammineni Balaji , Sreelakshmi Suresh , Mayank Jain
CPC classification number: H02M3/157 , H02M1/0009 , H02M1/0845
Abstract: In an example, a method includes storing a pending PWM pulse for a switching voltage regulator. The method also includes determining a switching voltage regulator is operating in a current limit mode, where an inductor current is above a current limit threshold. The method includes providing a predetermined number of PWM pulses in the current limit mode. The method also includes, responsive to providing the predetermined number of PWM pulses, ceasing storage of pending PWM pulses for the switching voltage regulator.
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公开(公告)号：US20240072680A1
公开(公告)日：2024-02-29
申请号：US18270668
申请日：2021-03-04
Applicant: Mitsubishi Electric Corporation
Inventor： Takeshi IIDA , Satoru ICHIKI
CPC classification number: H02M7/2173 , H02M1/0845 , H02P27/04
Abstract: A power conversion apparatus includes a converter circuit and a control unit. The converter circuit includes circuits for the number of phases being more than one, the circuits each including a reactor and a corresponding first or second switching element connected to the reactor. The converter circuit converts an AC voltage output from a commercial power supply into a DC voltage. In a case where a time difference between a timing of turning off the first switching element and a timing of turning on the second switching element is within a threshold, the control unit performs control for advancing or delaying the timing of turning off the first switching element.
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公开(公告)号：US20230318460A1
公开(公告)日：2023-10-05
申请号：US18329511
申请日：2023-06-05
Applicant: HEFEI CLT MICROELECTRONICS CO. LTD
Inventor： Lin CHENG , Feng WU , Jingyi YUAN , Zeguo LIU
CPC classification number: H02M3/1586 , H02M3/157 , H02M1/0019 , H02M1/0845
Abstract: Multiphase series capacitor DC-DC converters are provided, including: a power stage circuit configured to convert an input DC voltage into a stable DC voltage required by a load, where the power stage circuit includes inductors of two or more phases, and there is a phase difference with a preset interval between inductor currents of phases for alternately charging the load in sequence, and a bidirectional switch is provided between inductors of every two adjacent phases, where when the bidirectional switch is turned on, the inductors of the corresponding two phases charge the load simultaneously; and a load transient response circuit configured to, when a load transient positive step occurs, control one or more bidirectional switches to be turned on to make inductors of two or more corresponding phases charge the load simultaneously. Control methods of such converters are also provided, which can realize fast response to load transient changes.
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公开(公告)号：US20230244881A1
公开(公告)日：2023-08-03
申请号：US18296297
申请日：2023-04-05
Inventor： John Paul LESSO
CPC classification number: G06G7/48 , H02M1/0845 , H03M1/06 , H03M1/12 , G06N3/065
Abstract: This application relates to computing circuitry, and in particular to analogue computing circuitry suitable for neuromorphic computing. An analogue computation unit for processing data is supplied with a first voltage from a voltage regulator which is operable in a sequence of phases to cyclically regulate the first voltage. A controller is configured to control operation of the voltage regulator and/or the analogue computation unit, such that the analogue computation unit processes data during a plurality of compute periods that avoid times at which the voltage regulator undergoes a phase transition which is one of a predefined set of phase transitions between defined phases in said sequence of phases. This avoids performing computation operations during a phase transition of the voltage regulator that could result in a transient or disturbance in the first voltage, which could adversely affect the computing.
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98.发明申请
公开(公告)号：US20180294741A1
公开(公告)日：2018-10-11
申请号：US15913387
申请日：2018-03-06
Applicant: Inertech IP LLC
Inventor： Subrata K. Mondal
IPC: H02M7/487 , H02M3/04 , H02J9/06 , H02M7/5387
CPC classification number: H02M7/487 , H02J9/061 , H02M1/0845 , H02M3/04 , H02M7/49 , H02M7/53873 , H02M2007/53876
Abstract: Control systems for a multi-level diode-clamped inverter and corresponding methods include a processor and a digital logic circuit forming a hybrid controller. The processor identifies sector and region locations based on a sampled reference voltage vector V* and angle θe*. The processor then selects predefined switching sequences and pre-calculated turn-on time values based on the identified sector and region locations. The digital logic circuit generates PWM switching signals for driving power transistors of a multi-level diode-clamped inverter based on the turn-on time values and the selected switching sequences. The control system takes care of the existing capacitor voltage balancing issues of multi-level diode-clamped inverters while supplying both active and reactive power to an IT load. Using the control system, one can generate a symmetrical PWM signal that fully covers the linear under-modulation region.
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公开(公告)号：US20180123459A1
公开(公告)日：2018-05-03
申请号：US15846519
申请日：2017-12-19
Inventor： Junjie Li
IPC: H02M3/158 , H02M3/157 , H03K17/687 , H03K17/693 , H02M1/084 , H02M1/00
CPC classification number: H02M3/158 , H02M1/084 , H02M1/0845 , H02M3/157 , H02M2001/0025 , H03K17/6874 , H03K17/693
Abstract: A switching control circuit for controlling a multi-channel switching circuit can include: a logic control circuit that receives an external operation signal, and generates an enable signal, a trigger signal, and an order signal; a reference voltage regulation circuit that receives the enable signal, the trigger signal, the order signal, and a plurality of input voltage signals, and generates an adjustable reference voltage signal, where the reference voltage regulation circuit is also configured to select one of the plurality of input voltage signals based on the order signal; a feedback control circuit that receives the reference voltage signal, the plurality of input voltage signals, and the output voltage signal, and generates a feedback control signal; and a channel selection circuit that receives the order signal and the feedback control signal, and generates switching control signals to control switching operations of the multi-channel switching circuit.
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100.发明申请
公开(公告)号：US20170214335A1
公开(公告)日：2017-07-27
申请号：US15408443
申请日：2017-01-18
Applicant: GE Energy Power Conversion Technology Ltd
Inventor： Duro BASIC , Kai Alexander ROTHENHAGEN
CPC classification number: H02M7/48 , H02M1/0845 , H02M1/32 , H02M7/5387 , H02M2001/0009
Abstract: A method is disclosed to protect a power converter arrangement with a power converter that has a DC side that is connected to a DC intermediate circuit, an AC side, and controllable switches that can be controllably switched at a high frequency to invert the DC voltage of the DC intermediate circuit into an AC voltage. A protective device that can be activated and deactivated is provided to protect the power converter from overload by connecting an external thyristor rectifier bridge with a brake resistor (Rb ext) to the AC side of the power converter. If a predetermined error situation is detected, the external thyristors are triggered to turn on, to activate the protective device. If it is detected that the predetermined error situation has disappeared, the external thyristors are turned off. A power converter arrangement with a device to protect against overload is also disclosed.
