公开(公告)号：US20240243671A1

公开(公告)日：2024-07-18

申请号：US18574070

申请日：2021-07-14

Applicant: Mitsubishi Electric Corporation

Inventor： Hajime TOYODA

IPC: H02M7/5395 ,  H02M1/084 ,  H02M1/14

CPC classification number: H02M7/5395 ,  H02M1/0845 ,  H02M1/143

Abstract: A power conversion device includes a converter, an inverter and a control circuit that controls them. The control circuit generates: first control signals that control the converter, on the basis of a first carrier wave; and second control signals that control the inverter, on the basis of a second carrier wave having a frequency and a phase that are different from those of the first carrier wave. The frequency of the first carrier wave and the frequency of the second carrier wave have a predetermined relationship therebetween based on a current of a capacitor connected in between the converter and the inverter.

公开(公告)号：US20240154531A1

公开(公告)日：2024-05-09

申请号：US18550163

申请日：2022-04-08

Applicant: SG MICRO CORP

Inventor： Lei Tan ,  Xiang Yu ,  Junzhe Hao

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/084 ,  H02M3/157

CPC classification number: H02M3/1584 ,  H02M1/0025 ,  H02M1/0845 ,  H02M3/157

Abstract: A power conversion circuit of a multi-phase power supply, a multi-phase power supply and a control method is provided. The power conversion circuit includes a PWM signal generating circuit, a driving circuit and a power circuit. The PWM signal generating circuit receives a counting code, generates a pulse width modulation signal when a count value characterized by the counting code is equal to their identification numbers, and controls on and off states of the switching transistor in the power circuit. Therefore, a plurality of phases of power conversion circuits in the multi-phase power supply may share one timing circuit to control on times of respective ones of the power conversion circuits, which is beneficial for reducing complexity and cost of the controller, and reducing circuit size and cost of the multi-phase power supply, and for implementation of a multi-phase power supply with higher phase numbers.

公开(公告)号：US20230378869A1

公开(公告)日：2023-11-23

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

IPC: H02M3/157 ,  H02M1/084 ,  H02M1/00

CPC classification number: H02M3/157 ,  H02M1/0845 ,  H02M1/0009

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.

公开(公告)号：US11757358B2

公开(公告)日：2023-09-12

申请号：US17490671

申请日：2021-09-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Naman Bafna ,  Preetam Charan Anand Tadeparthy ,  Ammineni Balaji ,  Sreelakshmi Suresh ,  Mayank Jain

IPC: H02M3/157 ,  H02M1/084 ,  H02M1/00

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.

公开(公告)号：US20180006577A1

公开(公告)日：2018-01-04

申请号：US15628231

申请日：2017-06-20

Applicant: Astec International Limited

Inventor： Weng Fai NG ,  Wai Chung LI ,  Kwok Wai LO ,  Zhi Zhi LI ,  Chun Shing CHENG ,  Ka Kit LI

IPC: H02M7/525 ,  H02M3/157 ,  H02M1/084 ,  H02M1/42 ,  H02M7/505 ,  H02M7/21

CPC classification number: H02M7/525 ,  H02M1/0845 ,  H02M1/4208 ,  H02M1/4225 ,  H02M3/157 ,  H02M7/21 ,  H02M7/505 ,  Y02B70/126

Abstract: A control circuit is configured to sense an AC input voltage of a power factor correction (PFC) power circuit in a switching power converter, provide a control signal having an on-time and an off-time to at least one power switch of the PFC power circuit, and in response to detecting a peak voltage of the AC input voltage, increase the on-time of the control signal based on the sensed AC input voltage during an interval that begins with the peak voltage of the AC input voltage and ends with the next zero crossing following the peak voltage of the AC input voltage to improve a power factor of the switching power converter. Other example switching power converters, PFC power circuits and control circuits for controlling one or more power switches are also disclosed.

公开(公告)号：US09564808B2

公开(公告)日：2017-02-07

申请号：US14650741

申请日：2013-09-02

Applicant: Mitsubishi Electric Corporation ,  Toshiba Mitsubishi-Electric Industrial Systems Corporation

Inventor： Kimiyuki Koyanagi ,  Takushi Jimichi ,  Satoshi Azuma ,  Yasuhiko Hosokawa ,  Shinzo Tamai ,  Sadao Funahashi ,  Kotaro Higashi

IPC: G05F1/00 ,  H02M3/158 ,  H02M7/483 ,  H02M1/084

CPC classification number: H02M3/158 ,  H02M1/0845 ,  H02M7/483 ,  H02M2001/0006 ,  H02M2001/325 ,  H02M2007/4835

Abstract: An electric power conversion device includes a plurality of cell converters connected in cascade and including main circuits, drive circuits, and self-feeding devices for supplying power to the drive circuits by being supplied with power from the main circuits. The drive circuit is supplied with power via a first feed line from the self-feeding device in the corresponding cell converter, and supplied with power from the self-feeding device in another cell converter via a second feed line on which an insulation input/output circuit is provided. When the self-feeding device is abnormal, the drive circuit is supplied with power from the self-feeding device in the other cell converter, whereby the electric power conversion device continuously provides a desired output.

Abstract translation: 电力转换装置包括串联连接的多个电池转换器，包括主电路，驱动电路和用于通过从主电路供电来向驱动电路供电的自供电装置。 驱动电路通过来自相应电池转换器中的自供电装置的第一馈电线供电，并通过第二馈电线从另一电池转换器中的自供电装置供电，绝缘输入/输出 提供电路。 当自动馈送装置异常时，驱动电路从另一个电池转换器中的自供给装置供电，由此电力转换装置连续地提供期望的输出。

公开(公告)号：US20160190924A1

公开(公告)日：2016-06-30

申请号：US14650741

申请日：2013-09-02

Applicant: MITSUBISHI ELECTRIC CORPORATION ,  TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIEAL SYSTEMS CORPORATION

Inventor： Kimiyuki KOYANAGI ,  Takushi JIMICHI ,  Satoshi AZUMA ,  Yasuhiko HOSOKAWA ,  Shinzo TAMAI ,  Sadao FUNAHASHI ,  Kotaro HIGASHI

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M1/0845 ,  H02M7/483 ,  H02M2001/0006 ,  H02M2001/325 ,  H02M2007/4835

Abstract: An electric power conversion device includes a plurality of cell converters connected in cascade and including main circuits, drive circuits, and self-feeding devices for supplying power to the drive circuits by being supplied with power from the main circuits. The drive circuit is supplied with power via a first feed line from the self-feeding device in the corresponding cell converter, and supplied with power from the self-feeding device in another cell converter via a second feed line on which an insulation input/output circuit is provided. When the self-feeding device is abnormal, the drive circuit is supplied with power from the self-feeding device in the other cell converter, whereby the electric power conversion device continuously provides a desired output.

Abstract translation: 电力转换装置包括串联连接的多个电池转换器，包括主电路，驱动电路和用于通过从主电路供电来向驱动电路供电的自供电装置。 驱动电路通过来自相应电池转换器中的自供电装置的第一馈电线供电，并通过第二馈电线从另一电池转换器中的自供电装置供电，绝缘输入/输出 提供电路。 当自动馈送装置异常时，驱动电路从另一个电池转换器中的自供给装置供电，由此电力转换装置连续地提供期望的输出。

公开(公告)号：US20150008890A1

公开(公告)日：2015-01-08

申请号：US14314175

申请日：2014-06-25

Applicant: Sony Computer Entertainment Inc.

Inventor： Kazuki Sasao ,  Kazuaki Mitsui

IPC: H02M3/158

CPC classification number: H02M3/1588 ,  H02M1/08 ,  H02M1/084 ,  H02M1/0845 ,  H02M1/088 ,  H02M3/1584 ,  H02M2001/0054 ,  H02M2003/1586 ,  Y02B70/1466 ,  Y02B70/1491

Abstract: An M-channel (M is an integer of at least two) synchronous rectification type step-down DC/DC converter is provided. A controller in the converter (i) calculates a load current on a basis of currents flowing through M inductors, (ii) dynamically changes the number K of driving phases (K is an integer of up to M) on the basis of the calculated load current, (iii) generates a pulse signal adjusted in duty ratio such that an output voltage of an output line coincides with a predetermined reference voltage, (iv) selects K drivers among M drivers, and distributes the pulse signal with a phase difference of (360/K) degrees to each of the selected K drivers, and (vi) monotonically increases an amplitude control signal indicating the amplitude of a gate driving voltage with respect to the calculated load current in a range determined in advance for each number K of driving phases.

Abstract translation: 提供M通道（M为至少为2的整数）同步整流型降压DC / DC转换器。 转换器（i）中的控制器基于流过M个电感器的电流来计算负载电流，（ii）基于所计算的负载来动态地改变驱动相位的数量K（K为整数为M） 电流，（iii）产生调节占空比的脉冲信号，使得输出线的输出电压与预定参考电压一致，（iv）在M个驱动器中选择K个驱动器，并将相位差为（ 360度/ K度），以及（vi）单调地增加一个幅度控制信号，该振幅控制信号指示相对于计算出的负载电流的栅极驱动电压的幅度在针对驾驶的每个数量K预先确定的范围内 阶段

公开(公告)号：US08854109B2

公开(公告)日：2014-10-07

申请号：US13984790

申请日：2012-01-13

Applicant: Hans-Günter Eckel

Inventor： Hans-Günter Eckel

IPC: H03K17/30 ,  H03K17/16 ,  H03K17/567 ,  H02M1/084

CPC classification number: H03K17/16 ,  H02M1/0845 ,  H03K17/168 ,  H03K17/567 ,  H03K2217/0036

Abstract: A method for controlling two electrically series-connected reverse-conductive (RC) IGBTs (RC-IBGT) of a half bridge is disclosed, wherein an operating DC voltage is applied across the series connection and one of the two series-connected reverse-conductive IGBTs operates in IGBT mode and another of the two series-connected reverse-conductive IGBTs operates in diode mode, and wherein each of the two reverse-conductive IGBTs has three switching states “+15V”, “0V”, “−15V”. The RC-IGBT T1 operated in diode mode does not go into the switching state (−15V) of highly charged carrier concentration, but instead into a state of medium charge carrier concentration associated with the switching state “0V”, and not into the switching state “−15V”, as is known from conventional methods. This reduces the reverse-recovery without adversely affecting the forward voltage.

Abstract translation: 公开了一种用于控制半桥的两个串联连接的反向导电（RC-IBGT）的方法，其中在串联连接上施加一个工作的直流电压，并且两个串联的反向导通 IGBT工作于IGBT模式，两个串联的反向导通IGBT中的另一个以二极管模式工作，其中两个反向导通IGBT中的每一个具有三个开关状态“+ 15V”，“0V”，“-15V”。 在二极管模式下工作的RC-IGBT T1不会进入高电荷载流子浓度的开关状态（-15V），而是进入与开关状态“0V”相关的中等载流子浓度的状态，而不进入开关 状态“-15V”，如从常规方法已知的。 这样可以减少反向恢复，而不会对正向电压产生不利影响。

公开(公告)号：US20140056042A1

公开(公告)日：2014-02-27

申请号：US14066429

申请日：2013-10-29

Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.

Inventor： Richard H. Radosevich

IPC: H02M7/539 ,  H02M7/493

CPC classification number: H02M7/539 ,  H02M1/0845 ,  H02M7/493 ,  H02M7/81 ,  H02M2001/385 ,  H02P27/06

Abstract: Solid state switches of inverters are controlled by timing signals computed in power layer interface circuitry for individual inverters. Multiple inverters may be placed in parallel with common three-phase output. Common control circuitry generates timing signals or data used to reconstruct the common signals and sends these signals to the power layer interface circuitry. A processor in a power layer interface circuitry used these signals to recomputed the timing signals. Excellent synchronicity may be provided between parallel inverters that each separately reconstruct the timing signals based upon the identical received data.

Abstract translation: 逆变器的固态开关由单个逆变器的功率层接口电路中计算的定时信号控制。 多个逆变器可以与公共三相输出并联放置。 公共控制电路产生用于重建公共信号的定时信号或数据，并将这些信号发送到功率层接口电路。 功率层接口电路中的处理器使用这些信号来重新计算定时信号。 可以在并行逆变器之间提供优异的同步性，每个逆变器基于相同的接收数据分别重构定时信号。