-
公开(公告)号：US11309806B2
公开(公告)日：2022-04-19
申请号：US17137332
申请日：2020-12-29
Applicant: Ching-Shan Leu
Inventor： Ching-Shan Leu
IPC: H02M7/5387 , H02M1/08 , H02M1/00
Abstract: To disclose several zero-voltage-switching (ZVS) power inversion circuits, a modified pulse-width modulation control scheme is employed. It includes two driver-signal pairs. Each pair has a near 50% duty ratio driver signal and a pulse-width modulation driver signal. Because the combination timing waveform of the two driver signals of each pair resembles to a letter T, the control scheme is thus briefly named as double T (TT) control. In addition to achieving zero-voltage switching performance for high frequency operation, the disclosed power inversion circuits can alleviate the potential shoot-through problem existed in phase-shift control full-bridge power inversion circuits. Consequently, reliability performance can be improved.
-
公开(公告)号：US08665616B2
公开(公告)日：2014-03-04
申请号：US13472622
申请日：2012-05-16
Applicant: Ching-Shan Leu , Pin-Yu Huang
Inventor： Ching-Shan Leu , Pin-Yu Huang
Abstract: The present invention relates to a near zero current-ripple inversion circuit including top and bottom cells, a transformer (T1) comprising primary windings (P1, P2) and a secondary winding (S1), and at least one middle cell connected in series between the top and bottom cells. The top cell comprises two capacitors (C1, C2) and a switch (Q1) each connecting to the middle cell, and an inductor (Lr1) and the primary winding (P1) connected in series between the capacitor (C1) and switch (Q1), wherein the switch (Q1) is connected to the capacitors (C1, C2) respectively. The bottom cell comprises a capacitor (C3) and a switch (Q2) each connecting to the middle cell, and an inductor (Lr2) and the primary winding (P2) connected in series between the capacitor (C3) and switch (Q2), wherein the primary winding (P2) is connected to the middle cell, and the capacitor (C3) and switch (Q2) are connected.
Abstract translation: 本发明涉及包括顶部和底部单元的近零电流纹波反转电路，包括初级绕组（P1，P2）和次级绕组（S1）的变压器（T1）和串联连接的至少一个中间单元 顶部和底部细胞。 顶部单元包括两个电容器（C1，C2）和每个连接到中间单元的开关（Q1）和串联连接在电容器（C1）和开关（Q1）之间的电感器（Lr1）和初级绕组（P1） ），其中开关（Q1）分别连接到电容器（C1，C2）。 底部单元包括每个连接到中间单元的电容器（C3）和开关（Q2），以及串联连接在电容器（C3）和开关（Q2）之间的电感器（Lr2）和初级绕组（P2） 其中初级绕组（P2）连接到中间单元，并且电容器（C3）和开关（Q2）被连接。
-
公开(公告)号：US08199540B2
公开(公告)日：2012-06-12
申请号：US12683412
申请日：2010-01-06
Applicant: Ching-Shan Leu , Jing-Cheng Lin , Shun-Yuan Wu
Inventor： Ching-Shan Leu , Jing-Cheng Lin , Shun-Yuan Wu
CPC classification number: H02M3/155 , H02M3/158 , H02M2001/009 , Y10T307/406
Abstract: A high voltage gain power converter includes: a main switch element; an assistant switch element; a first inductive element, a first switch element, and a first capacitive element; and a second inductive element, a second switch element, and a second capacitive element. The first inductive element is connected between an input node and first switch element. The first capacitive element, connected between the first switch element and ground, provides a first boost output voltage. The second inductive element is connected between the main switch element and first capacitive element. The second switch element is connected to a common node of the second inductive element and main switch element. The second capacitive element, connecting the second switch element to a first node, provides a second boost output voltage. The assistant switch element is connected between the first inductive element and common node of the second inductive element and main switch element.
Abstract translation: 高压增益功率转换器包括：主开关元件; 辅助开关元件; 第一电感元件，第一开关元件和第一电容元件; 以及第二感应元件，第二开关元件和第二电容元件。 第一电感元件连接在输入节点和第一开关元件之间。 连接在第一开关元件和地之间的第一电容元件提供第一升压输出电压。 第二电感元件连接在主开关元件和第一电容元件之间。 第二开关元件连接到第二电感元件和主开关元件的公共节点。 将第二开关元件连接到第一节点的第二电容元件提供第二升压输出电压。 辅助开关元件连接在第二电感元件和主开关元件的第一电感元件和公共节点之间。
-
公开(公告)号：US20110163599A1
公开(公告)日：2011-07-07
申请号：US12683412
申请日：2010-01-06
Applicant: Ching-Shan Leu , Jing-Cheng Lin , Shun-Yuan Wu
Inventor： Ching-Shan Leu , Jing-Cheng Lin , Shun-Yuan Wu
IPC: H02M3/156
CPC classification number: H02M3/155 , H02M3/158 , H02M2001/009 , Y10T307/406
Abstract: A high voltage gain power converter includes: a main switch element; an assistant switch element; a first inductive element, a first switch element, and a first capacitive element; and a second inductive element, a second switch element, and a second capacitive element. The first inductive element is connected between an input node and first switch element. The first capacitive element, connected between the first switch element and ground, provides a first boost output voltage. The second inductive element is connected between the main switch element and first capacitive element. The second switch element is connected to a common node of the second inductive element and main switch element. The second capacitive element, connecting the second switch element to a first node, provides a second boost output voltage. The assistant switch element is connected between the first inductive element and common node of the second inductive element and main switch element.
Abstract translation: 高压增益功率转换器包括：主开关元件; 辅助开关元件; 第一电感元件，第一开关元件和第一电容元件; 以及第二感应元件，第二开关元件和第二电容元件。 第一电感元件连接在输入节点和第一开关元件之间。 连接在第一开关元件和地之间的第一电容元件提供第一升压输出电压。 第二电感元件连接在主开关元件和第一电容元件之间。 第二开关元件连接到第二电感元件和主开关元件的公共节点。 将第二开关元件连接到第一节点的第二电容元件提供第二升压输出电压。 辅助开关元件连接在第二电感元件和主开关元件的第一电感元件和公共节点之间。
-
公开(公告)号：US07957161B2
公开(公告)日：2011-06-07
申请号：US12397205
申请日：2009-03-03
Applicant: Ching-Shan Leu
Inventor： Ching-Shan Leu
IPC: H02M3/335
CPC classification number: H02M1/34 , H02M3/33569 , H02M2001/342 , Y02B70/1491
Abstract: A power converter capable of improving converter's efficiency and achieving zero-voltage-switching is provided, in which a first series circuit is connected in parallel with a direct current (DC) power supply and has a first inductor, a first primary winding, first and second switching elements connected in series. A second series circuit is connected in parallel with the DC power supply and has third and fourth switching elements, a first capacitor, a second primary winding and a second inductor connected in series. A second capacitor is connected between a first node between the first primary winding and the first switching element in the first series circuit and a second node between the fourth switching element and the second primary winding in the second series circuit. A third node between the first and second switching elements is connected to a fourth node within the second series circuit.
Abstract translation: 提供一种能够提高转换器效率并实现零电压切换的电力转换器，其中第一串联电路与直流（DC）电源并联连接，并且具有第一电感器，第一初级绕组，第一和第 第二开关元件串联连接。 第二串联电路与直流电源并联连接，并具有串联连接的第三和第四开关元件，第一电容器，第二初级绕组和第二电感器。 第二电容器连接在第一串联电路中的第一初级绕组和第一开关元件之间的第一节点和第二串联电路中的第四开关元件和第二初级绕组之间的第二节点。 第一和第二开关元件之间的第三节点连接到第二串联电路内的第四节点。
-
Patent Agency Ranking
公开(公告)号：US10673317B2
公开(公告)日：2020-06-02
申请号：US16432914
申请日：2019-06-05
Applicant: Ching-Shan Leu
Inventor： Ching-Shan Leu
Abstract: A soft-switching and low input current ripple inverter circuit is disclosed. It includes two paralleled dual-switch forward inverter circuits with a single transformer, two clamping diodes, and one coupling capacitor. It has voltage-clamping function on the switches with a lossless snubber at the turn-off instant and provides enough leakage energy to achieve zero-voltage switching operation with low input current ripple feature. Two set of the driver signals with 180 phase shift each other are used to control the switches of said first and second dual-switch forward inverters, respectively. Each set of driver signals includes one PWM signal (D) and one near 50% duty cycle driver signal. Employing the proposed inverter circuit, the switch's turn-on voltage can be reduced to half input voltage compared to its prior art circuits. Consequently, the switching losses are thus reduced and efficiency is improved, especially in light-load operation.
-
公开(公告)号：US20080025051A1
公开(公告)日：2008-01-31
申请号：US11812339
申请日：2007-06-18
Applicant: Ching-Shan Leu
Inventor： Ching-Shan Leu
CPC classification number: H02M3/33569 , H02M3/33576 , H02M3/33592 , Y02B70/1475
Abstract: A circuit used to convert a DC input to an AC output comprises a pair of series circuits, one or two capacitors, and one transformer. Each of the series circuits is in parallel with the DC input and comprises a pair of series-connected switches and at least one transformer primary. Each capacitor couples the two series circuits, and is attached to each series circuit at a node between the respective transformer primary and switch. The center nodes between two series-connected switches are connected together. At least one secondary on the transformer provides the AC output. Optionally, multiple transformers may be utilized. Similar topologies may be used for rectification instead of inversion.
Abstract translation: 用于将DC输入转换为AC输出的电路包括一对串联电路，一个或两个电容器和一个变压器。 每个串联电路与DC输入并联，并且包括一对串联连接的开关和至少一个变压器初级。 每个电容器耦合两个串联电路，并且在相应的变压器初级和开关之间的节点处附接到每个串联电路。 两个串联交换机之间的中心节点连接在一起。 变压器上至少有一个次级提供交流输出。 可选地，可以使用多个变压器。 类似的拓扑可以用于整流而不是反转。
-
公开(公告)号：US20200044559A1
公开(公告)日：2020-02-06
申请号：US16432914
申请日：2019-06-05
Applicant: Ching-Shan LEU
Inventor： Ching-Shan LEU
Abstract: A soft-switching and low input current ripple inverter circuit is disclosed. It includes two paralleled dual-switch forward inverter circuits with a single transformer, two clamping diodes, and one coupling capacitor. It has voltage-clamping function on the switches with a lossless snubber at the turn-off instant and provides enough leakage energy to achieve zero-voltage switching operation with low input current ripple feature. Two set of the driver signals with 180 phase shift each other are used to control the switches of said first and second dual-switch forward inverters, respectively. Each set of driver signals includes one PWM signal (D) and one near 50% duty cycle driver signal. Employing the proposed inverter circuit, the switch's turn-on voltage can be reduced to half input voltage compared to its prior art circuits. Consequently, the switching losses are thus reduced and efficiency is improved, especially in light-load operation.
-
公开(公告)号：US20120051108A1
公开(公告)日：2012-03-01
申请号：US12870867
申请日：2010-08-30
Applicant: Ching-Shan LEU , Pin-Yu HUANG
Inventor： Ching-Shan LEU , Pin-Yu HUANG
Abstract: A circuit used to convert DC input to AC output comprises a transformer and three series sub-circuits. The first series sub-circuit is connected in parallel with the DC input and comprises first and second capacitors connected in series. The secondary series sub-circuit is connected in parallel with the DC input and comprises a first primary winding of the transformer, a clamping capacitor and a second primary winding of the transformer sequentially connected in series. The third series sub-circuit connected in parallel with said clamping capacitor and comprises first and second switches connected in series. The center nodes of the first and third series sub-circuits are connected together. Thus, while a secondary winding of the transformer provides AC voltage, the circuit is able to effectively reduce current ripple and decrease voltage stress on semiconductor switch with minimum component count. Similar topologies may be used for rectification instead of inversion.
Abstract translation: 用于将DC输入转换为AC输出的电路包括变压器和三个串联子电路。 第一系列子电路与DC输入并联连接，并包括串联连接的第一和第二电容器。 二次串联副电路与直流输入并联连接，包括变压器的第一初级绕组，钳位电容器和变压器的第二初级绕组顺序串联连接。 与所述钳位电容并联连接的第三串联子电路，包括串联连接的第一和第二开关。 第一和第三串联子电路的中心节点连接在一起。 因此，当变压器的次级绕组提供交流电压时，该电路能够有效地减少电流纹波，并以最小的元件数量减少半导体开关上的电压应力。 类似的拓扑可以用于整流而不是反转。
-
公开(公告)号：US20110199802A1
公开(公告)日：2011-08-18
申请号：US13092995
申请日：2011-04-25
Applicant: Ching-Shan Leu
Inventor： Ching-Shan Leu
IPC: H02M7/537
CPC classification number: H02M3/33538 , H02M1/34 , H02M2001/0064 , H02M2001/342 , Y02B70/1491
Abstract: This invention discloses apparatus and methods for increasing the duty cycle of the single ended power converters surpass 50 percent limitation by adding active switch-capacitor network to the primary circuit and several inversion circuits can be realized to convert a DC input to an AC output. The circuits comprise two series circuits, at least one clamp clamping capacitor, and at least one transformer. The first series circuit includes one active switch paralleled with a diode, one capacitor and at least one transformer primary. The second series circuit includes at least one active switch and at least one transformer primary. At least one clamp clamping capacitor couples the first and the second series circuits, and is attached to each series circuit at a node between the respective transformer primary winding.
Abstract translation: 本发明公开了通过向主电路添加有源开关电容网络来提高单端功率转换器的占空比超过50％的装置和方法，并且可以实现若干反相电路将DC输入转换为AC输出。 电路包括两个串联电路，至少一个钳位钳位电容器和至少一个变压器。 第一串联电路包括与二极管并联的一个有源开关，一个电容器和至少一个变压器初级。 第二串联电路包括至少一个有源开关和至少一个变压器初级。 至少一个钳位钳位电容器耦合第一和第二串联电路，并且在相应的变压器初级绕组之间的节点处附接到每个串联电路。
-
-
-
-
-
-
-
-
-
Search Results
19
records
(took 0.03 seconds)
