公开(公告)号：US20240275273A1

公开(公告)日：2024-08-15

申请号：US18645519

申请日：2024-04-25

Applicant: Chengdu Monolithic Power Systems Co., Ltd.

Inventor： Guangzhuo Li ,  Jicheng Wang ,  Pengfei Liu ,  Hao Wang ,  Chuanhao Xu

IPC: H02M1/42 ,  H02M3/155 ,  H02M7/155

CPC classification number: H02M1/4208 ,  H02M3/155 ,  H02M7/155

Abstract: A control circuit for controlling a PFC circuit is disclosed. The PFC circuit is controlled to operate in at least two working modes including CCM, BCM, and DCM in a single cycle of an input rectified voltage based on a load of the PFC circuit. The control circuit includes a control reference circuit and a switching control circuit. The control reference circuit provides a parameter control data based on a mode threshold and a half-sine wave signal. The switching control circuit provides a switching control signal to control a main power switch of the PFC circuit based on a current sense signal and the parameter control data. The current sense signal is indicative of a current flowing through an energy storage device of the PFC circuit.

公开(公告)号：US20230283194A1

公开(公告)日：2023-09-07

申请号：US17967447

申请日：2022-10-17

Applicant: FINsix Corporation

Inventor： Anthony Sagneri ,  Victor Sinow ,  Ranko Sredojevic ,  Milovan Kovacevic

IPC: H02M7/155 ,  H02M3/07 ,  H02M3/155 ,  H02M3/00 ,  H02M3/335 ,  H02M1/42 ,  H02M1/44

CPC classification number: H02M7/155 ,  H02M3/07 ,  H02M3/155 ,  H02M3/01 ,  H02M3/33571 ,  H02M1/4241 ,  H02M1/44 ,  H02M3/33507 ,  Y02B70/10 ,  H02M1/0058

Abstract: Control techniques and circuits for resonant power converters and other power converters are described. Control of power converters based on more than one control parameter can provide improved efficiency over a wide operating range. A resonant power converter may have its switching frequency controlled within a narrow band to improve efficiency.

公开(公告)号：US20190081569A1

公开(公告)日：2019-03-14

申请号：US16186847

申请日：2018-11-12

Applicant: Lutron Electronics Co., Inc.

Inventor： Robert C. Newman, JR. ,  Chris J. Salvestrini ,  Matthew V. Harte

IPC: H02M7/06 ,  H02M7/217 ,  H02M7/155 ,  H05B41/392 ,  H05B33/08 ,  H05B37/02 ,  H05B39/04

CPC classification number: H02M7/06 ,  H02M7/155 ,  H02M7/217 ,  H05B33/0815 ,  H05B33/0845 ,  H05B33/0848 ,  H05B37/02 ,  H05B39/04 ,  H05B39/044 ,  H05B39/048 ,  H05B41/3924 ,  Y02B20/346 ,  Y10S323/905

Abstract: A two-wire load control device (such as, a dimmer switch) for controlling the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling circuit coupled between a first main load terminal and the gate of the thyristor, and a control circuit coupled to a control input of the gate coupling circuit. The control circuit generates a drive voltage for causing the gate coupling circuit to conduct a gate current to thus render the thyristor conductive at a firing time during a half cycle of the AC power source, and to allow the gate coupling circuit to conduct the gate current at any time from the firing time through approximately the remainder of the half cycle, where the gate coupling circuit conducts approximately no net average current to render and maintain the thyristor conductive.

公开(公告)号：US20180309368A1

公开(公告)日：2018-10-25

申请号：US15963351

申请日：2018-04-26

Applicant: FINsix Corporation

Inventor： Anthony Sagneri ,  Victor Sinow ,  Ranko Sredojevic ,  Milovan Kovacevic

IPC: H02M3/335 ,  H02M1/44 ,  H02M3/07 ,  H02M3/337 ,  H02M3/155 ,  H02M7/155

CPC classification number: H02M3/33507 ,  H02M1/4241 ,  H02M1/44 ,  H02M3/07 ,  H02M3/155 ,  H02M3/337 ,  H02M7/155 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: Control techniques and circuits for resonant power converters and other power converters are described. Control of power converters based on more than one control parameter can provide improved efficiency over a wide operating range. A resonant power converter may have its switching frequency controlled within a narrow band to improve efficiency.

公开(公告)号：US20180246145A1

公开(公告)日：2018-08-30

申请号：US15556916

申请日：2016-03-01

Applicant: FRONIUS INTERNATIONAL GmbH

Inventor： Christian MAGERL ,  Franz Peter MUSIL ,  Robert EBERL ,  Friedrich STEINMAURER

IPC: G01R15/00 ,  H01F27/29 ,  H05K1/18 ,  H02M7/06 ,  G01R19/00

CPC classification number: G01R15/005 ,  B23K9/1043 ,  B23K9/32 ,  G01R19/0084 ,  H01F27/29 ,  H02M3/335 ,  H02M7/06 ,  H02M7/155 ,  H02M7/1555 ,  H05K1/181 ,  H05K2201/10166 ,  H05K2201/10174

Abstract: To enable in a circuit arrangement (8) with a transformer with center tap the voltage measurement on the secondary side simply and safely, it is provided that at least two series-connected resistors (R3, R4) are connected between the two outer connections (A1, A2) of the secondary side of the transformer (T) to form a measurement point (P) between the two resistors (R3, R4), and a voltage measurement unit (V) is provided to measure the voltage (UP) between the measurement point (P) and the second output pole (13), which corresponds to the output voltage (UA).

公开(公告)号：US20170280522A1

公开(公告)日：2017-09-28

申请号：US15080688

申请日：2016-03-25

Applicant: Jaguar Precision Industry Co., Ltd.

Inventor： Fei-Tyh CHUANG ,  Zhen-Gong Xie ,  Lu-Ting Huang

IPC: H05B33/08 ,  H02M7/06

CPC classification number: H05B33/0815 ,  H02M1/081 ,  H02M7/06 ,  H02M7/155 ,  H02M7/1555 ,  H05B33/0848 ,  H05B37/0245 ,  H05B39/044

Abstract: A method and apparatus for modulating a load by means of control command obtained by varying conduction angle of AC voltage is provided. Under normal operation, conduction angle of AC is approximate to 180 degrees. When a state change command of the load is to be executed, the angle of conduction angle is changed by a conduction angle modulation circuit of control end. After a conduction angle detection circuit of the load end detects the conduction angle, a control unit decodes the information of the conduction angle, and controls the load to perform a corresponding operation. The method and apparatus do not need to add an extra control wiring for the load, and may use the conduction angle of an AC power supply to effectively perform multifunctional modulations on the load with existing power lines, and the defect of a low power commonly found in a traditional dimmer is overcome.

公开(公告)号：US20170169941A1

公开(公告)日：2017-06-15

申请号：US15377860

申请日：2016-12-13

Applicant: James F. Murray, III

Inventor： James F. Murray, III

IPC: H01F29/04

CPC classification number: H02M5/297 ,  H02J3/383 ,  H02M1/4233 ,  H02M5/293 ,  H02M7/155 ,  H02M7/162 ,  H02M7/217 ,  H02M7/219 ,  H02M2001/0048 ,  H02M2007/2195 ,  H02P9/14 ,  Y02E10/563

Abstract: Apparatus and associated methods relate to a switching network that (1) receives energy from an input source that magnetically excites an output winding, (2) stores some of that energy in a series capacitance while delivering power to a resistive load during a first excitation cycle portion, and (3) then injects some of the stored energy back to the input source by injecting current into a tap of the output winding while delivering power to the resistive load and during a second excitation cycle portion. In an illustrative example, the first excitation cycle portion may include a first positive or negative quarter cycle of the excitation waveform. The second excitation cycle portion may include a second positive or negative quarter cycle of the excitation waveform. The energy injected back to the input source during the second excitation cycle portion may advantageously provide, for example, an assisting torque to a prime mover.

公开(公告)号：US09667131B2

公开(公告)日：2017-05-30

申请号：US15076662

申请日：2016-03-22

Applicant: XJ GROUP CORPORATION ,  XUCHANG XJ SOFTWARE TECHNOLOGIES LTD ,  XJ ELECTRIC CO., LTD ,  XI'AN JIAOTONG UNIVERSITY ,  STATE GRID CORPORATION OF CHINA

Inventor： Xing Liu ,  Ruizhi Jiang ,  Yuanhang Yang ,  Guobing Song ,  Guobin Li ,  Xu Zhu ,  Peiyao Liu

IPC: H02M1/32 ,  H02M7/521 ,  H02M7/155 ,  H02M1/00 ,  H02M7/12

CPC classification number: H02M1/32 ,  H02H7/12 ,  H02M7/06 ,  H02M7/12 ,  H02M7/155 ,  H02M7/521 ,  H02M2001/0009

Abstract: The present invention relates to a differential protection method for bridge circuit in current converter control system, including the steps of: 1). obtaining sample values of the three-phase current for the current converter control system at AC side thereof, and calculating the absolute value of each sampling value respectively; 2). calculating a value of current at the AC side of the current converter control system; and 3). determining whether to perform a relay protection for the current converter control system according to the value current at the AC side of the current converter control system. The method of the present invention provided, is fast, convenient, and with a small amount of calculation. The current converter control system determines whether to perform a relay protection in a short time. Also it reduces the possibility that the equipment burned because of cannot break the circuit in time.

公开(公告)号：US09621065B2

公开(公告)日：2017-04-11

申请号：US14965751

申请日：2015-12-10

Applicant: Advanced Charging Technologies, LLC

Inventor： Michael H. Freeman ,  W. J. “Jim” Weaver, Jr. ,  Mitchael C. Freeman ,  Robert Dieter ,  Brian Santee

IPC: H02J7/04 ,  H02M5/458 ,  H02M7/217 ,  H02M7/155 ,  H02M3/335 ,  H02M7/48 ,  H02M1/36 ,  H02J7/00 ,  H02M1/08 ,  H05B33/08 ,  H02M1/00

CPC classification number: H02M5/458 ,  H02J7/0052 ,  H02J2007/0062 ,  H02M1/08 ,  H02M1/36 ,  H02M3/33507 ,  H02M7/155 ,  H02M7/217 ,  H02M7/2176 ,  H02M7/48 ,  H02M2001/0009 ,  H02M2001/0019 ,  H05B33/0809 ,  Y10T307/406

Abstract: An energy efficient apparatus includes a switching device, a frequency dependent reactive device, and a control element is provided. The switching device is coupled to a source of electrical power and includes a pair of transistors and is adapted to receive a control signal and to produce an alternating current power signal. The frequency of the alternating current power signal is responsive to the control signal. The frequency dependent reactive device is electrically coupled to the pair of transistors for receiving the alternating current power signal and producing an output power signal. The frequency dependent reactive device is chosen to achieve a desired voltage of the output power signal relative to the frequency of the alternating current power signal. The control element senses an actual voltage of the direct current power signal and modifies the control signal delivered to achieve the desired voltage of the direct current power signal.

公开(公告)号：US20160366735A1

公开(公告)日：2016-12-15

申请号：US15108843

申请日：2015-12-29

Applicant: SENGLED OPTOELECTRONICS CO., LTD

Inventor： ZHIBIN TIAN ,  JUNSHAN LOU ,  CHAOQUN SUN ,  JINXIANG SHEN

IPC: H05B33/08 ,  H02M7/155 ,  H02M1/42

CPC classification number: H05B33/0815 ,  H02M1/4208 ,  H02M7/155 ,  H02M2001/4283 ,  H05B33/0809 ,  H05B33/0845

Abstract: The present disclosure provides a dimming circuit for SCR dimmer (silicon-controlled rectifier) circuit. The dimming circuit includes a signal conversion circuit for converting an input signal to a sine-wave voltage signal and output the sine-wave voltage signal to a current sampling end of a power factor correction circuit. The dimming circuit also includes the power factor correction circuit to receive the sine-wave voltage signal for correcting power factor. A biasing current is generated according to the input signal and is positively correlated to the input signal, and a sine-wave current signal corresponding to the sine-wave voltage signal is a sum of the biasing current and a primary current of a transformer in the power factor correction circuit.

Abstract translation: 本公开提供了一种用于SCR调光器（硅控整流器）电路的调光电路。 调光电路包括用于将输入信号转换为正弦波电压信号并将正弦波电压信号输出到功率因数校正电路的电流采样端的信号转换电路。 调光电路还包括功率因数校正电路，以接收用于校正功率因数的正弦波电压信号。 根据输入信号产生偏置电流，并与输入信号正相关，与正弦波电压信号对应的正弦波电流信号是变压器的偏置电流和初级电流之和 功率因数校正电路。