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51.发明授权
公开(公告)号：US5633793A
公开(公告)日：1997-05-27
申请号：US376365
申请日：1995-01-23
申请人： Fred C. Lee , Yimin Jiang
发明人： Fred C. Lee , Yimin Jiang
CPC分类号： H02M7/4826 , H02M7/062 , H02M7/219 , H02M7/5387 , Y02B70/1441
摘要： A boost rectifier is provided with an ultra high speed diode in its direct current rail to reduce diode reverse recovery loss with or without implementing a soft switching technique. Full zero-voltage-transition (ZVT) as well as zero-current-transition (ZCT) may also be achieved by adding a simple auxiliary network across the DC rail which operates only during the short turn-on transients of the bridge switches. Similarly, a simple, inexpensive auxiliary circuit can be added to the DC rail of a conventional voltage source inverter shown to implement both ZVT and ZCT.
摘要翻译： 升压整流器在其直流导轨中提供超高速二极管，以减少或不实施软开关技术的二极管反向恢复损耗。 完全零电压转换（ZVT）以及零电流转换（ZCT）也可以通过在仅仅在桥接开关的短接通瞬变期间工作的DC轨道上添加简单的辅助网络来实现。 类似地，可以将简单，便宜的辅助电路添加到所示的常规电压源逆变器的DC导轨上，以实现ZVT和ZCT。
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52.发明授权
公开(公告)号：US5574636A
公开(公告)日：1996-11-12
申请号：US304661
申请日：1994-09-09
申请人： Fred C. Lee , Hengchun Mao
发明人： Fred C. Lee , Hengchun Mao
IPC分类号： H02M7/219 , H02M5/458 , H02M7/12 , H02M7/48 , H02M7/5387
CPC分类号： H02M5/4585 , H02M7/4826 , Y02B70/145
摘要： An improved zero voltage transition (ZVT) pulse width modulation (PWM) link converter is provided which introduces a space vector modulation scheme and an auxiliary circuit which includes a commutation power supply or special switch arrangement used to discharge resonant inductor currents to zero and to recover commutation energy. In an alternate embodiment, an improved ZVT PWM link converter provides an auxiliary switch for each main switch in the converter to achieve ZVT. The novel ZVT converters provide zero-voltage switching without increasing switching action of the main switches. In this way, the advantages of PWM control is maintained. Conduction loss, turn-off losses, and voltage stress of the main switches are the same as in conventional PWM converters, but the dominant turn-on losses are eliminated, so total power losses are minimized.
摘要翻译： 提供了一种改进的零电压转换（ZVT）脉宽调制（PWM）链路转换器，其引入空间矢量调制方案和辅助电路，其包括用于将谐振电感器电流放电到零并且恢复的换向电源或特殊开关装置 换向能量 在替代实施例中，改进的ZVT PWM链路转换器为转换器中的每个主开关提供辅助开关以实现ZVT。 新型ZVT转换器提供零电压开关，而不增加主开关的开关动作。 以这种方式，可以保持PWM控制的优点。 主开关的导通损耗，关断损耗和电压应力与传统PWM转换器相同，但主导导通损耗被消除，因此总功率损耗最小化。
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53.发明授权
公开(公告)号：US5523937A
公开(公告)日：1996-06-04
申请号：US165842
申请日：1993-12-14
申请人： Matti Kahkipuro
发明人： Matti Kahkipuro
CPC分类号： H02M7/4826
摘要： A procedure and an apparatus for converting a first alternating voltage into a second alternating voltage with respect to frequency and amplitude by means of first (1) and second (2) bridges having switches (T.sub.1 . . . T.sub.12), and a resonant circuit (3) connected between the bridges. The invention also relates to the use of a frequency converter for the control of a motor. The voltages of a supplying network and the voltages of a load (M) are connected across the resonant circuit (3) in an alternating fashion by means of bridge switches (T.sub.1 . . . T.sub.6) and bridge switches (T.sub.7 . . . T.sub.12), respectively. The voltages are alternately connected across the resonant circuit for a period equal to respective half cycles of the characteristic frequency of the resulting resonant circuit formed. When power is supplied, a bridge change is effected after each period.
摘要翻译： 一种通过具有开关（T1 ... T12）和谐振电路（T1 ... T12）的第一（1）和第二（2）桥转换相对于频率和幅度的第一交流电压转换成第二交流电压的方法和装置， 3）连接在桥之间。 本发明还涉及使用变频器来控制电动机。 供电网络的电压和负载（M）的电压通过桥式开关（T1 ... T6）和桥式开关（T7 ... T12）以交替的方式连接在谐振电路（3） ， 分别。 电压在谐振电路两端交替连接一段等于形成的谐振电路的特征频率的相应半周期。 当供电时，在每个周期之后进行桥梁更换。
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公开(公告)号：US5432694A
公开(公告)日：1995-07-11
申请号：US211086
申请日：1994-02-28
申请人： Herve Pouliquen , Khaled Elloumi
发明人： Herve Pouliquen , Khaled Elloumi
IPC分类号： H02M7/48 , H02M7/5387
CPC分类号： H02M7/4826
摘要： Method of regulating a voltage inverter operating in quasi-resonance, including an inverter bridge with controlled components (transistors, GTO etc.) operating in turned off-saturated mode, and an oscillating circuit arranged on the DC voltage source side, and consisting of an inductor in series with the DC voltage source, and of a capacitor connected in parallel with the inverter bridge, characterized in that pulse-width modulation regulation is carried out, in which the sampling period is very much greater than and of the order of about ten or more times the resonance period of the oscillating circuit.
摘要翻译： PCT No.PCT / FR92 / 00822 Sec。 371日期1994年04月26日 102（e）1994年4月26日PCT 1994年2月28日PCT PCT。 第WO93 / 04525号公报 日期：1993年3月4日。调节工作在准谐振电压逆变器的方法，包括工作在截止饱和模式的受控元件（晶体管，GTO等）的逆变桥，以及配置在直流电压 源极侧，并且由与DC电压源串联的电感器和与逆变器桥并联连接的电容器组成，其特征在于，执行脉冲宽度调制调节，其中采样周期远大于 并且是振荡电路的共振周期的大约十倍或更多次。
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公开(公告)号：US4998054A
公开(公告)日：1991-03-05
申请号：US411860
申请日：1989-09-26
申请人： Bimal K. Bose , Jih-Sheng Lai
发明人： Bimal K. Bose , Jih-Sheng Lai
IPC分类号： H02M7/48
CPC分类号： H02M7/4826 , Y02P80/112
摘要： The invention comprises a DC link resonant converter for controlling the speed of AC machines. Switch and power supply means is provided to establish a bi-directional initial current in the resonant circuit. By selecting the plurality and magnitude of the initial current, the peak voltage of the resonant link is controlled, and reliable zero crossing of the resonant voltage is assured. Current technology permits resonant frequencies in the range of 50-100 kilohertz to be utilized.
摘要翻译： 本发明包括用于控制交流电机速度的直流链路谐振变换器。 提供开关和电源装置以在谐振电路中建立双向初始电流。 通过选择初始电流的多个和大小，谐振链路的峰值电压被控制，并且确保谐振电压的可靠的零交叉。 目前的技术允许使用50-100千赫兹范围内的谐振频率。
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公开(公告)号：US20240266967A1
公开(公告)日：2024-08-08
申请号：US18563017
申请日：2021-08-31
申请人： HITACHI ASTEMO, LTD.
发明人： Shoho ISHIKAWA
CPC分类号： H02M7/003 , H02M7/4826 , H05K7/14329 , H05K7/20927
摘要： An electric power conversion device including: a voltage conversion circuit that converts a DC voltage; an inverter circuit that converts the DC voltage into an AC voltage; a negative electrode bus bar commonly connected to the voltage conversion circuit and the inverter circuit; a first positive electrode bus bar connected to the voltage conversion circuit; a second positive electrode bus bar connected d to the inverter circuit; a housing that accommodates the voltage conversion circuit and the inverter circuit; and a first heat dissipation member provided in the housing, in which the first positive electrode bus bar, the second positive electrode bus bar, and the negative electrode bus bar are stacked and electrically insulated from each other, the first positive electrode bus bar and the second positive electrode bus bar are opposite to the first heat dissipation member across an insulating member, and at least one of the first positive electrode bus bar and the second positive electrode bus bar is in thermal contact with the first heat dissipation member via the insulating member and the first heat conductive member.
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公开(公告)号：US12040700B2
公开(公告)日：2024-07-16
申请号：US17973267
申请日：2022-10-25
CPC分类号： H02M1/4266 , G05F1/70 , H02M1/4216 , H02M1/4241 , H02M1/425 , H02M7/4807 , H02M7/4826
摘要： A power supply apparatus, comprising at least one circuit board having thereon at least a first single phase power factor controlled (PFC) circuit, and a second PFC corrected circuit, the first single phase PFC circuit and the second PFC corrected circuit each having at least one PFC device in communication with at least one inverter, at least one resonant (LC) circuit positioned on the at least one circuit board and in electrical communication with at least one of the first single phase PFC circuit and the second PFC corrected circuit, at least one transformer in communication with at least one of the first single phase PFC circuit and the second PFC corrected circuit via the at least one LC resonant circuit, the at least one transformer configured to generate at least one transformer output signal, and at least one capacitor in communication with the at least one transformer and configured to output at least one magnetron input signal in response to the at least one transformer output signal, and at least one power supply generating at least one three phase input voltage, the at least one circuit board in communication with the at least one power supply.
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公开(公告)号：US11799388B2
公开(公告)日：2023-10-24
申请号：US17424645
申请日：2020-01-13
发明人： Maik Wacker
CPC分类号： H02M5/42 , H02M1/0067 , H02M7/493 , H02M1/008 , H02M7/4826
摘要： A drive system includes a first converter and at least one second converter. The first converter has, inside its housing, a first rectifier whose DC-voltage-side terminal is connected, e.g., directly connected, to the DC-voltage-side terminal of a first inverter of the first converter. A first capacitance is connected in parallel with the DC-voltage-side terminal of the first inverter. The second converter, or each second converter, has, inside its housing, a second rectifier whose DC-voltage-side terminal is connected via inductivities, i.e., for example, restrictors, to the DC-voltage-side terminal of a second inverter of the second converter. A second capacitance is connected in parallel with the DC-voltage-side terminal of the second inverter, and the DC-voltage-side terminal of the first inverter is connected via first inductivities to the DC-voltage-side terminal of the second inverter.
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公开(公告)号：US11664740B2
公开(公告)日：2023-05-30
申请号：US16942642
申请日：2020-07-29
CPC分类号： H02M7/4826 , H02H7/122 , H02M1/32 , H02P6/28 , H02P27/06
摘要： A threshold detection system can be configured to monitor a location (e.g., a DC link) for overcurrent. The threshold detection system can be configured to generate a pulse width modulated signal with a duty cycle that is proportional to current through the DC link. The threshold detection system can be configured to determine whether the duty cycle exceeds a selected threshold.
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公开(公告)号：US20190199236A1
公开(公告)日：2019-06-27
申请号：US16291267
申请日：2019-03-04
申请人： ESAB AB
发明人： Andrzej Mnich
CPC分类号： H02M7/4826 , B23K9/1043 , H02M3/3155 , H02M3/33584 , H02M5/4585 , H02M7/48 , H02M7/4807 , H02M7/505 , H02M7/5236 , H02M7/797
摘要： A power supply, including a primary pre-converter, coupled to supplying mains, configured to receive an AC voltage at low frequency and output a high DC voltage, and further configured to receive the high DC voltage and to output the alternating current; a primary converter, disposed on a primary side of the power supply, coupled to the high DC voltage from the primary pre-converter; an isolating transformer to receive the high frequency AC voltage and output a high frequency secondary AC voltage, and to receive a high frequency secondary AC current and to output primary high frequency AC current; and an output converter, on a secondary side of the power supply, wherein the output converter is configured to receive high frequency AC voltage from the isolating transformer and to output a DC voltage of a first or second polarity to an output, and wherein the output converter is configured to receive DC current of a first or second direction from the output and to output a high frequency AC current to the isolating transformer.
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