公开(公告)号：US11575310B2

公开(公告)日：2023-02-07

申请号：US17351882

申请日：2021-06-18

Applicant: Transportation IP Holdings, LLC

Inventor： Nikhil Edlabadkar ,  Ajith Kuttannair Kumar

IPC: H02M1/14 ,  H02M1/12 ,  H02M7/523

Abstract: A system may be provided that includes an energy storage device, and an inverter electrically coupled to the energy storage device. The system also includes a passive filter electrically coupled between the energy storage device and the inverter. The passive filter includes a first coupled-inductor and at least one first bypass capacitor. The first coupled-inductor includes at least two magnetically coupled windings. The passive filter is configured to reduce or eliminate alternating current at the energy storage device.

公开(公告)号：US20210351703A1

公开(公告)日：2021-11-11

申请号：US17381375

申请日：2021-07-21

Applicant: Asterc International Limited

Inventor： James Sigamani

IPC: H02M3/335 ,  H02M1/42 ,  H02M3/338 ,  H02M7/523 ,  H02M1/10 ,  H02M3/07

Abstract: A switch-mode power supply includes a pair of input terminals for receiving an alternating current (AC) or direct current (DC) voltage input from an input power source, a pair of output terminals for supplying a direct current (DC) voltage output to a load, and at least four switches coupled in a three-level LLC circuit arrangement between the pair of input terminals and the pair of output terminals. The power supply also includes a voltage doubler power factor correction (PFC) circuit coupled between the pair of input terminals and the three-level LLC circuit, and a control circuit coupled to operate the at least four switches to supply the DC voltage output to the load.

公开(公告)号：US11108329B1

公开(公告)日：2021-08-31

申请号：US16805175

申请日：2020-02-28

Applicant: Astec International Limited

Inventor： James Sigamani

IPC: H02M3/335 ,  H02M3/07 ,  H02M1/42 ,  H02M1/10 ,  H02M3/338 ,  H02M7/523 ,  H02M1/00 ,  H02M7/48 ,  H02M7/483

Abstract: A switch-mode power supply includes a pair of input terminals for receiving an alternating current (AC) or direct current (DC) voltage input from an input power source, a pair of output terminals for supplying a direct current (DC) voltage output to a load, and at least four switches coupled in a three-level LLC circuit arrangement between the pair of input terminals and the pair of output terminals. The power supply also includes a voltage doubler power factor correction (PFC) circuit coupled between the pair of input terminals and the three-level LLC circuit, and a control circuit coupled to operate the at least four switches to supply the DC voltage output to the load.

公开(公告)号：US10673323B2

公开(公告)日：2020-06-02

申请号：US16343134

申请日：2017-10-20

Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INCORPORATED

Inventor： Shuo Wang ,  Huan Zhang

IPC: H02M1/44 ,  H02M1/42 ,  H02M7/48 ,  H02M7/523 ,  H02M3/335

Abstract: A full bridge LLC resonant converter can include: a full bridge circuit including a first input node and a second input node; a LLC resonant tank circuit connected to the first input node and the second input node; a transformer winding part connected to the LLC resonant tank circuit; a rectifier circuit connected to the transformer through a first output node and a second output node; and a capacitor connected between the first input node and the first output node. The LLC resonant tank circuit can include a resonant capacitor connected to the first input node, a resonant inductor connected to the resonant capacitor, and a magnetizing inductance connected between the resonant inductor and the second input node.

公开(公告)号：US10348233B2

公开(公告)日：2019-07-09

申请号：US15576499

申请日：2016-05-25

Applicant: AROS ELECTRONICS AB

Inventor： Jerker Hellström

IPC: H02M3/335 ,  H02P27/06 ,  H02M7/48 ,  H02M1/14 ,  H02M7/521 ,  H02M7/523

Abstract: An electrical motor system and a method for operating the electrical motor system are disclosed. The electrical motor system comprises a direct current (DC) source, a filter connected in parallel with the DC source and an electric motor with at least two sets of windings. A voltage signal is provided from the DC source to the inverter circuit where the signal is modulated. The modulated signal is then supplied from the inverter circuit to each set of windings with a respective time offset between each set of windings respectively, providing a very efficient DC bus ripple reduction. Hereby, it is e.g. possible to use small filter capacitors/capacitor banks in electrical motor systems.

公开(公告)号：US20180375441A1

公开(公告)日：2018-12-27

申请号：US16012099

申请日：2018-06-19

Applicant: TDK CORPORATION

Inventor： Min LIN ,  Ken MATSUURA

IPC: H02M7/523 ,  H02M7/48 ,  H03F3/217

CPC classification number: H02M7/523 ,  H02M7/4826 ,  H02M2007/4815 ,  H03F3/2176

Abstract: A power converter includes: input terminals for inputting a DC voltage; output terminals for outputting an AC voltage; a switch; a first resonant capacitance connected between both ends of the switch; a first LC resonance circuit connected in series with the switch between the output terminals; and a second LC resonance circuit connected between the input terminals and the switch. The first LC resonance circuit includes an inductance and a capacitance in series. When the input terminals are shorted, frequency characteristics of an impedance of the second LC resonance circuit include first to fourth resonant frequencies. The first resonant frequency is higher than a switching frequency of the switch. The second and fourth resonant frequencies are around double and four times the switching frequency. The impedance has local maxima at the first and third resonant frequencies and local minima at the second and fourth resonant frequencies.

公开(公告)号：US20180175770A1

公开(公告)日：2018-06-21

申请号：US15576499

申请日：2016-05-25

Applicant: AROS ELECTRONICS AB

Inventor： JERKER HELLSTRÖM

IPC: H02P27/06 ,  H02M7/521 ,  H02M7/523 ,  H02M1/14

CPC classification number: H02P27/06 ,  B60L2210/40 ,  B60L2220/40 ,  H02M1/14 ,  H02M7/48 ,  H02M7/521 ,  H02M7/523 ,  H02M2007/4818

Abstract: An electrical motor system and a method for operating the electrical motor system are disclosed. The electrical motor system comprises a direct current (DC) source, a filter connected in parallel with the DC source and an electric motor with at least two sets of windings. A voltage signal is provided from the DC source to the inverter circuit where the signal is modulated. The modulated signal is then supplied from the inverter circuit to each set of windings with a respective time offset between each set of windings respectively, providing a very efficient DC bus ripple reduction. Hereby, it is e.g. possible to use small filter capacitors/capacitor banks in electrical motor systems.

公开(公告)号：US09893650B2

公开(公告)日：2018-02-13

申请号：US15234800

申请日：2016-08-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Jun Sumioka

IPC: H02N2/00 ,  H02M7/523 ,  H04N5/232 ,  H02N2/06 ,  G02B27/64 ,  G02B21/26

CPC classification number: H02N2/008 ,  G02B21/26 ,  G02B27/646 ,  H02M7/523 ,  H02N2/0015 ,  H02N2/0075 ,  H02N2/026 ,  H02N2/06 ,  H02N2/065 ,  H04N5/23287

Abstract: A driving circuit for a vibration type actuator includes an inductor and a capacitor which are connected in series to an electric-mechanical energy conversion element, in which, in a case where a series resonance frequency based on the inductor and the capacitor is set as fs, and a resonance frequency in a vibration mode other than vibration used for driving of the vibrator is set as fu, 0.73·fu

公开(公告)号：US07710745B2

公开(公告)日：2010-05-04

申请号：US11659545

申请日：2005-08-04

Applicant: Eliahu Weinstein ,  Kenneth E. Wing

Inventor： Eliahu Weinstein ,  Kenneth E. Wing

IPC: H02M7/42 ,  H02M7/53 ,  H02M7/523 ,  H02M7/529

CPC classification number: H02M3/3385 ,  B41J29/38

Abstract: The present invention is directed to a remotely controlled power supply system that can change output polarity at a high slew rate without using switching devices. The system comprises a control circuit and two individual high voltage DC-DC converter power supply sections, one positive and one negative, connected in series. By nature of the control circuitry, either a positive or negative controllable current is produced depending upon a programmed voltage input. The two individual power supply sections are each self-oscillating single transistor circuits. The self-oscillating circuits contain an RC network tuned to provide attenuation at the second harmonic of the natural oscillating frequency of the circuit. This reduces and/or eliminates the tendency of this circuit to begin oscillation at the wrong harmonic of the natural frequency. A power-on delay circuit is used to suppress the outputs of the two power supply sections no matter the command of the input control programming signal. An enable signal input allows for suppression of the power supply system output at any other time.

Abstract translation: 本发明涉及一种遥控电源系统，其可以在不使用开关装置的情况下以高转换速率改变输出极性。 该系统包括串联连接的控制电路和两个单独的高压DC-DC转换器电源部分，一个正负一个负极。 根据控制电路的性质，根据编程的电压输入产生正或负可控电流。 两个单独的电源部分是每个自振荡单晶体管电路。 自振荡电路包含RC网络，该RC网络被调谐以在电路的自然振荡频率的二次谐波处提供衰减。 这减少和/或消除了该电路在固有频率的错误谐波处开始振荡的趋势。 无论输入控制编程信号的命令如何，都使用上电延迟电路来抑制两个电源部分的输出。 使能信号输入允许在任何其他时间抑制电源系统输出。

公开(公告)号：US07375987B2

公开(公告)日：2008-05-20

申请号：US11621284

申请日：2007-01-09

Applicant: Yoichi Kyono

Inventor： Yoichi Kyono

IPC: H02M7/523 ,  H02M3/335

CPC classification number: H02M3/337 ,  H02M3/3376 ,  Y02B70/1433

Abstract: A resonant switching power source apparatus has a first switching element and second switching element being connected in series between output terminals of a DC power source and are alternately turned on and off; a series resonant circuit having a primary winding of a transformer and a current resonance capacitor and connected in parallel with the second switching element; a controller to control the first and second switching elements; a rectifying/smoothing circuit to rectify and smooth a voltage, which is generated on a secondary winding of the transformer during an ON period of the second switching element, and output the rectified-smoothed voltage; a current detector to detect a current passing through the series resonant circuit; and an overcurrent protector to turn off the first and second switching elements for a predetermined period so that excitation energy of the transformer is reset, if the current detector detects a predetermined current value.

Abstract translation: 谐振开关电源装置具有串联连接在直流电源的输出端之间的第一开关元件和第二开关元件，并交替地导通和截止; 串联谐振电路，其具有变压器的初级绕组和电流谐振电容器，并且与第二开关元件并联连接; 控制器，用于控制第一和第二开关元件; 整流/平滑电路，用于在第二开关元件的接通时段期间对变压器的次级绕组产生的电压进行整流和平滑，并输出整流平滑电压; 电流检测器，用于检测通过串联谐振电路的电流; 以及过电流保护器，如果电流检测器检测到预定电流值，则将第一和第二开关元件断开预定时间段，使得变压器的励磁能量被复位。