公开(公告)号：US20240333134A1

公开(公告)日：2024-10-03

申请号：US18563425

申请日：2021-07-28

Applicant: Mitsubishi Electric Corporation

Inventor： Atsushi TSUCHIYA ,  Kazunori HATAKEYAMA ,  Yuichi SHIMIZU

IPC: H02M1/12 ,  H02M7/5388 ,  H02P27/08

CPC classification number: H02M1/126 ,  H02M7/5388 ,  H02P27/085

Abstract: A power converter including: a non-boost rectifier circuit that converts a first alternating-current voltage into a direct-current voltage; a reactor connected to the rectifier circuit; a capacitor that smooths a direct-current voltage; an inverter that is connected in parallel to the capacitor, converts the smoothed direct-current voltage into a second alternating-current voltage having desired voltage and frequency, and outputs the second alternating-current voltage to a motor; and a controller that controls an operation of the inverter. Capacitances of the reactor and the capacitor are set such that a resonance frequency of a filter circuit including the reactor and the capacitor is smaller than a first electrical angular frequency based on a voltage command when the controller controls an operation of the inverter such that the second alternating-current voltage is maximized in a range not causing overmodulation.

公开(公告)号：US12027996B2

公开(公告)日：2024-07-02

申请号：US18273155

申请日：2023-01-17

Applicant: SHANDONG UNIVERSITY

Inventor： Jingyang Fang ,  Hongchang Li ,  Feng Gao ,  Xu Yang

IPC: H02M7/5387 ,  H02J3/32 ,  H02J3/36 ,  H02M7/5388

CPC classification number: H02M7/53871 ,  H02J3/32 ,  H02J3/36 ,  H02M7/5388

Abstract: A fractal power converter and a method for constructing the fractal power converter, the method for constructing the fractal converter including: replacing a switch and/or an energy storage element of an asymmetric half-bridge sub-module with the same asymmetric half-bridge sub-module for at least two times, replacing a switch and/or an energy storage element of a symmetric half-bridge sub-module with the same symmetric half-bridge sub-module for at least two times, and replacing a switch and/or an energy storage element of an H-bridge sub-module with the same H-bridge sub-module for at least two times. Compared with a conventional high-voltage and large-current power converter, the fractal power converter may output any high-voltage and large-current waveform. The system is modularized, the structure is simple and extensible, and voltage and current may be evenly distributed among the modules. The control method is simple and easy to standardize. Multi-port parallel output is allowed.

公开(公告)号：US20240204686A1

公开(公告)日：2024-06-20

申请号：US18526547

申请日：2023-12-01

Applicant: STMicroelectronics International N.V.

Inventor： Vincent BINET

IPC: H02M7/53846 ,  H02M7/538 ,  H02M7/5388

CPC classification number: H02M7/538466 ,  H02M7/53803 ,  H02M7/5388

Abstract: According to one aspect, an integrated circuit is provided comprising: a digital-to-analog converter (MDAC) configured to convert a digital word (DIGW) into an analog signal (SDAC), a switching circuit including: a first transistor (PMOS1) having a drain configured to receive the analog signal (SDAC) and a source connected to a drain of a second transistor (PMOS2) and a third transistor (NMOS1) having a drain configured to receive the analog signal (SDAC) and a source connected to a drain of a fourth transistor (NMOS2); a voltage control circuit configured to apply a voltage on the source of the first transistor (PMOS1) and on the source of the third transistor (NMOS1) so as to limit a drain-source voltage of the first transistor (PMOS1) and a drain-source voltage of the third transistor (NMOS1) regardless of the value of said digital word.

公开(公告)号：US11552575B1

公开(公告)日：2023-01-10

申请号：US17405311

申请日：2021-08-18

Applicant: General Electric Company

Inventor： Nathaniel Robert Michener ,  Fernando Arturo Ramirez Sanchez ,  Steven Wade Sutherland ,  Robert Gregory Wagoner ,  Rajesh Bhupathi ,  Igor Berroteran

IPC: H02M5/458 ,  H02M7/487 ,  H02M1/38 ,  H02M7/5388 ,  H02P27/14 ,  H02M1/00 ,  H02M1/08

Abstract: A method for operating a multi-level bridge power converter includes providing a plurality of switching devices of the power converter in one of a neutral point clamped topology or an active neutral point clamped topology. The method also includes providing a plurality of deadtimes for the switching devices. Further, the method includes selecting one of the deadtimes for each of the switching devices such that at least two of the switching devices operate according to different deadtimes. Moreover, the method includes operating the switching devices at the selected deadtimes to allow a first group of the switching devices to switch slower than a second group of the switching devices such that the first group of the switching devices satisfy safe operating requirements while the second group of the switching devices switch faster than the first group.

公开(公告)号：US11336203B2

公开(公告)日：2022-05-17

申请号：US17274317

申请日：2019-09-09

Applicant: SOCOVAR S.E.C.

Inventor： Mohammad Sharifzadeh ,  Kamal Al-Haddad

IPC: H02M7/483 ,  H02M7/487 ,  H02M7/5387 ,  H02M1/00 ,  H02M7/5395 ,  H02M7/5388

Abstract: A multilevel power converter and method for transforming DC power from a DC source into AC power for an AC load are provided. The converter is composed of a half-bridge inverter, a switching cell, and a controller configured for controlling operation of the half-bridge inverter and the switching cell. The half-bridge inverter and the switching cell are connectable to the DC source and the AC load. The switching cell is composed of first and second pairs of switches forming first and second branches in parallel, first and second capacitors connected in series in a capacitor branch connected between the first and second branches, and a pair of back-to-back connected switches in a third branch, the third branch connected to the capacitor branch and connectable to the AC load.

公开(公告)号：US20220123668A1

公开(公告)日：2022-04-21

申请号：US17427995

申请日：2019-10-10

Applicant: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION

Inventor： Ryota OKUYAMA ,  Hiroki ISHITOBI ,  Takashi SUGIYAMA

IPC: H02M7/483 ,  H02M1/00 ,  H02M7/5388

Abstract: A power conversion device includes: a first control unit and a second control unit that output a first control signal and a second control signal, respectively; a gate circuit that causes a control signal selected from the first control signal and the second control signal to pass through the gate circuit; and a drive circuit that drives a main circuit based on the control signal that passes through the gate circuit. When the second control signal is selected in the state where the first control signal passes through the gate circuit, the gate circuit interrupts the first control signal and causes the second control signal to pass through the gate circuit as an absolute value of an instantaneous value of an AC current decreases below a threshold current.

公开(公告)号：US09444354B2

公开(公告)日：2016-09-13

申请号：US14090586

申请日：2013-11-26

Applicant: Albert-Ludwigs-Universitat Freiburg

Inventor： Peter Woias

IPC: H02M3/335 ,  H02M1/36 ,  H02M7/5388

CPC classification number: H02M3/33523 ,  H02M1/36 ,  H02M3/3353 ,  H02M3/33553 ,  H02M7/5388

Abstract: The present invention relates to a voltage converter circuit for transforming a low voltage applied to its input into a higher output voltage at an output. The voltage converter circuit comprises at least one first to fourth controllable switch of a first type, which are connected to each other in the form of an H-bridge, which is arranged between the input voltage and a reference potential, and a transformer with at least one primary winding arranged in a transversal branch of the H-bridge, and with a secondary winding, at which a transformed voltage can be tapped for generating the output voltage. In parallel to at least one of the controllable switches at least one controllable switch of a second type is arranged, which is conductive without a control potential being applied. The secondary winding of the transformer is furthermore connected with the control inputs of the controllable switches for feeding back the transformed voltage.

Abstract translation: 本发明涉及一种电压转换器电路，用于将施加到其输入端的低电压变换为输出端的较高输出电压。 电压转换器电路包括第一类型的至少一个第一至第四可控开关，其以布置在输入电压和参考电位之间的H桥的形式彼此连接，并且具有在 布置在H桥的横向分支中的至少一个初级绕组以及次级绕组，在该次级绕组处，可以抽头变换的电压以产生输出电压。 平行于可控开关中的至少一个，布置了第二类型的至少一个可控开关，其在不施加控制电位的情况下是导电的。 变压器的次级绕组进一步与可控开关的控制输入端相连，用于反馈变压电压。

公开(公告)号：US20230188047A1

公开(公告)日：2023-06-15

申请号：US17920874

申请日：2021-04-28

Applicant: SIGNIFY HOLDING B.V.

Inventor： REINHOLD ELFERICH

IPC: H02M3/335 ,  H02M1/08 ,  H02M1/44 ,  H02M7/5388 ,  H02M1/00 ,  H02M3/00 ,  H05B45/37

CPC classification number: H02M3/33573 ,  H02M1/083 ,  H02M1/44 ,  H02M7/5388 ,  H02M1/0058 ,  H02M3/01 ,  H05B45/37

Abstract: A power converter circuit (300) comprising: a full bridge inverter and an resonance circuit and a control circuit. The full bridge comprises a first leg (HBx) and a second leg (HBy), each leg having two switches and a switching node between the switches, the switches of the first leg being different from those of the second leg. The resonance circuit is connected between said switching nodes, and comprises an inductance (Lp) in series 5 with a capacitance (Cr). The control circuit generates control signals for the switches in accordance with a predefined scheme having two energizing phases (φ1, φ3) and two passive conducting phases (φ2, φ4) with a configurable duty cycle (DC1, DC2) for achieving zero-voltage-switching (ZVS).

公开(公告)号：US11677311B2

公开(公告)日：2023-06-13

申请号：US17763100

申请日：2020-08-18

Applicant: Siemens Aktiengesellschaft

Inventor： Peter Köllensperger ,  Stephan Neugebauer

IPC: H02M7/5388 ,  H02M1/15 ,  H02P29/50 ,  H02M7/48 ,  H02M5/458 ,  H02M7/5387 ,  H02M7/5395

CPC classification number: H02M1/15 ,  H02M7/4803 ,  H02P29/50 ,  H02M5/458 ,  H02M7/4826 ,  H02M7/5387 ,  H02M7/5395

Abstract: In a method for operating a controllable converter with an intermediate circuit capacitor, the control behavior can be improved by transmitting, depending on an intermediate circuit voltage applied to the intermediate circuit capacitor, an additional power component via the controllable converter such that the electric current that is generated by the controllable converter for the additional power component counteracts an oscillation of the intermediate circuit voltage. The additional power component is transmitted by the controllable converter to a connected motor as a pulsating additional torque. Also described is a controllable converter with a control unit for carrying out a method, wherein the controllable converter has semiconductors that can be switched off, and an intermediate circuit capacitor designed as a film-type capacitor.

公开(公告)号：US11532995B2

公开(公告)日：2022-12-20

申请号：US17082987

申请日：2020-10-28

Applicant: ZF Friedrichshafen AG

Inventor： Michael Sperber ,  Stefan Hain

IPC: B60L15/00 ,  H02M1/084 ,  H02M7/00 ,  H02M7/5388

Abstract: The invention relates to an electronic module for an electric drive in a vehicle, comprising an input-side electrical connection for inputting an input current generated by an energy source; an intermediate circuit with a capacitor; a semiconductor bridge circuit, connected in parallel to the intermediate circuit, wherein the bridge circuit comprises a high-side switch, and a low-side switch connected in series to the high-side switch, wherein the high-side switch is connected to the input-side electrical connection via a first current path, wherein the low-side switch is connected to the input-side electrical connection via a second current path, wherein the first current path and the second current path are the same length; and an output-side electrical connection for outputting an output current generated by the bridge circuit from the input current.