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公开(公告)号：US20230128630A1
公开(公告)日：2023-04-27
申请号：US17499735
申请日：2021-10-12
IPC分类号： H02M5/293 , H02M5/22 , H02M1/42 , H02M7/5395
摘要： An power converter includes an unfolder connected to a three-phase source and has an output connection with a positive terminal, a negative terminal and a neutral terminal. The unfolder creates two unipolar piece-wise sinusoidal DC voltage waveforms offset by a half of a period. A three-input converter connected to the unfolder produces a quasi-sinusoidal output voltage across output terminals. Switches of the converter selectively connect the positive, negative and neutral inputs across the output terminals. A PWM controller controls a first duty ratio and a second duty ratio for the converter based on a phase angle of the source and a modulation index generated from an error signal related to a control variable. The duty ratios are time varying with a fundamental frequency of the source. The modulation index relates to output voltage of the converter, peak voltage or current of the source and/or peak current at the output terminals.
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公开(公告)号：US11594978B2
公开(公告)日：2023-02-28
申请号：US17134178
申请日：2020-12-25
申请人： Sudip K. Mazumder
发明人： Sudip K. Mazumder
摘要： Aspects of the invention overcome a monolithic approach to conventional low-frequency LPTs by using a high-frequency solid-state alternating current ac/ac modular power-conversion approach. Embodiments of the invention enable the ability to incorporate new technologies without in all cases redoing a LPT design from scratch. Furthermore, given that LPTs are for the long term, aspects of the invention ensure that they are durable, efficient, and fault tolerant with overloading capability.
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公开(公告)号：US11214148B2
公开(公告)日：2022-01-04
申请号：US15779127
申请日：2016-11-25
发明人： Junfeng Liu , Jialei Wu , Jun Zeng , Fei Luo
IPC分类号： B60L1/14 , B60L1/00 , B60L50/51 , H02J3/00 , B60R16/03 , H02J3/10 , H02M1/44 , H02J5/00 , H02M5/22
摘要： The present invention discloses a distributed high-frequency AC electrical system for the electric vehicle. The system divides all loads of the electric vehicle into four load areas according to their spatial positions. Four high-frequency inverters and four DC input interfaces are contained in the system, with each of the four load areas being configured with one of the four high-frequency inverters, and each of the four high-frequency inverters being configured with one of the four DC input interfaces. One end of each DC input interface is connected to the DC side of the corresponding high-frequency inverter, and the other end is connected to the storage battery of the electric vehicle. Each high-frequency inverter outputs a high-frequency AC bus to supply power for the loads in the corresponding load area, and the four high-frequency inverters are in a parallel operation state through a high-frequency connection point that connects the four high-frequency AC buses. The present invention has the advantages of simplifying the electrical system structure of the electric vehicle, improving the system stability, and the like.
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公开(公告)号：US10581336B2
公开(公告)日：2020-03-03
申请号：US16229399
申请日：2018-12-21
申请人： Enphase Energy, Inc.
摘要： An energy control circuit is provided. The energy control circuit includes an input circuit; an output circuit; an energy storage circuit coupled between the input circuit and the output circuit; and a controller coupled to the input circuit and output circuit for controlling an amount of energy stored in the energy storage circuit and for controlling a waveform generated by the output circuit using energy stored in the energy storage circuit.
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公开(公告)号：US20190280586A1
公开(公告)日：2019-09-12
申请号：US16302356
申请日：2017-05-17
发明人： Hao CHEN , Deepakraj M. DIVAN
摘要： Various examples are provided for soft switching solid state transformers and converters, and their operation and application. In one example, a soft switching solid state power transformer includes a high frequency (HF) transformer; first and second auxiliary resonant circuits coupled to the HF transformer; and first and second current-source inverter (CSI) bridges coupled to the corresponding first auxiliary resonant circuits. The first and second CSI bridges include reverse blocking switch assemblies that conduct current in one direction and block voltage in both directions. In another example, a reactive power compensator includes a high frequency (HF) transformer; first, second and third auxiliary resonant circuits coupled to the HF transformer; and first, second and third current-source inverter (CSI) bridges coupled to the corresponding first auxiliary resonant circuits. In another example, a converter includes an auxiliary resonant circuit coupled across an inductor and first and second CSI bridges coupled across the inductor.
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公开(公告)号：US10153642B2
公开(公告)日：2018-12-11
申请号：US15104133
申请日：2014-12-12
摘要： Multiphase generator-conversion systems and clusters are disclosed. The multiphase generator-conversion systems include a multiphase n-stator generator, n conversion lines and a transformer module. Each n conversion line is coupled to the plurality of phase lines of one of the n stators, respectively. Each conversion line comprises a rectification module, coupled to the respective plurality of phase lines, configured to receive a multiphase AC voltage and generate a first DC voltage at an output. A dc/ac inverter is coupled to the output of the respective rectification module. The dc/ac inverter receives the first dc voltage and generates a single-phase AC voltage at an output. The transformer module is arranged to receive the n single-phases of the dc/ac inverters and generate an n-phase AC voltage at an output. This voltage is input to a single diode rectifier. Multiphase generator-conversion clusters include multiphase generator-conversion systems arranged to be coupled to a diode rectifier.
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公开(公告)号：US09647568B1
公开(公告)日：2017-05-09
申请号：US14182268
申请日：2014-02-17
申请人： Ideal Power, Inc.
CPC分类号： H02M5/225 , H02M1/08 , H02M3/1582 , H02M3/33507 , H02M3/33584 , H02M5/293 , H02M5/297 , H02M5/458 , H02M7/4807 , H02M7/797 , H02M2007/4815 , Y02B70/1441
摘要： Methods and systems for bi-directional multi-port power conversion systems and applications are disclosed. In some sample embodiments, current-modulating power converters can be used to provide conversion between synchronous and asynchronous power. In some sample embodiments, current-modulating power converters can perform power conversion can be performed to and from three-phase AC with an active neutral line. In some sample embodiments, current-modulating power converters can convert between synchronous and asynchronous power and also support three-phase AC with active neutral.
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公开(公告)号：US20160218635A1
公开(公告)日：2016-07-28
申请号：US14565444
申请日：2016-04-11
CPC分类号： H02M5/22 , G05F1/44 , H02M1/08 , H02M5/293 , H02M2001/0009
摘要： An AC voltage regulator that regulates the output AC voltage level regardless of the varying AC input voltage utilizing high frequency series inductors that only process a proportion of the total output power and uses unipolar semiconductor low loss switches in series with one or more rectifiers.
摘要翻译： 使用高频串联电感器调节输出交流电压电平的交流电压调节器，该电压只能处理总输出功率的一部分，并使用与一个或多个整流器串联的单极半导体低损耗开关。
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9.发明授权Input output balanced bidirectional buck-boost converters and associated systems and methods 有权输入输出平衡双向降压 - 升压转换器及相关系统和方法公开(公告)号：US09263948B1
公开(公告)日：2016-02-16
申请号：US14496570
申请日：2014-09-25
CPC分类号： H02M3/158 , H02M3/1582 , H02M3/33584 , H02M5/225 , H02M7/797 , H02M2007/4815 , H02P25/22 , Y02B70/1441
摘要： Various embodiments of the present invention relate to an input output balanced bidirectional buck-boost converter and associated system and method. In one example, a DC/DC bidirectional buck-boost power converter has both input and output voltages centered around chassis. This converter allows for overlapping input and output voltages, and allows for use of offset based leakage fault detection.
摘要翻译： 本发明的各种实施例涉及一种输入输出平衡双向降压 - 升压转换器及其相关系统和方法。 在一个示例中，DC / DC双向降压 - 升压功率转换器具有以机架为中心的输入和输出电压。 该转换器允许重叠输入和输出电压，并允许使用基于偏移的泄漏故障检测。
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10.发明授权公开(公告)号：US09219423B2
公开(公告)日：2015-12-22
申请号：US14352947
申请日：2012-09-21
申请人： Yao Lv
发明人： Yao Lv
CPC分类号： H02M5/225 , H02M1/088 , H02M2007/4835
摘要： A converter bridge arm suitable for high-voltage applications and an application system thereof. The converter bridge arm comprises an energy storage capacitor (C) and a plurality of reverse-conducting switches, and is formed by serial connection of an upper telescopic arm (Bu), a lower telescopic arm (Bd) and an inductor (Lb). The upper telescopic arm (Bu) and the lower telescopic arm (Bd) are respectively formed by cascading connection of a plurality of units. The converter bridge arm has a simple modular structure, is easy to control, reliable and convenient for starting a high-voltage circuit, has self-balancing voltage sharing effect, and can operate without a transformer and has the characteristic of power bidirectional flow, does not require high-voltage isolation auxiliary power supply, has the advantages of suitability for high-frequency operation and electromagnetic compatibility, and can remarkably reduce the dimension of a filter.
摘要翻译： 适用于高压应用的转换器桥臂及其应用系统。 转换器桥臂包括储能电容器（C）和多个反向导通开关，并且通过上伸缩臂（Bu），下伸缩臂（Bd）和电感器（Lb）的串联连接形成。 上伸缩臂（Bu）和下伸缩臂（Bd）分别由多个单元的级联连接形成。 转换桥臂具有简单的模块化结构，易于控制，启动高压电路可靠方便，具有自平衡电压共享效应，无需变压器即可工作，具有电力双向流动的特点 不需要高压隔离辅助电源，具有适用于高频操作和电磁兼容性的优点，可以显着降低滤波器的尺寸。
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