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公开(公告)号：US20250023446A1
公开(公告)日：2025-01-16
申请号：US18714328
申请日：2022-12-15
Applicant: Massachusetts Institute of Technology
Inventor： David J. Perreault , Khandoker N. Rafa Islam
IPC: H02M1/00 , H02M1/08 , H02M5/293 , H02M7/5387 , H03F1/56
Abstract: In one aspect, a system for transforming a radio frequency (RF) signal between a source and a load can include: a first port and a second port connected to different ones of the source and the load; a first filter connected to the first port; a second filter connected to the second port, at least one of the first and second filters operable to provide variable reactance using dynamic frequency tuning (DFT); a two-port switching network connected between the first filter and the second filter, the switching network comprising a plurality of switches; and a controller coupled to the switching network and to the source, the controller configured to operate the plurality of switches according to a switching pattern and to dynamically adjust a frequency of the RF signal to provide controllable impedance matching between the first port and the second port.
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公开(公告)号：US20240305254A1
公开(公告)日：2024-09-12
申请号：US18667152
申请日：2024-05-17
Applicant: Massachusetts Institute of Technology
Inventor： Haoquan Zhang , Anas Al Bastami , David J. Perreault
CPC classification number: H03F3/211 , H03F3/2178 , H03F2200/451
Abstract: A power generator includes a plurality of amplifier blocks and a combiner. Each of the amplifier blocks include one or more amplifiers, and the combiner combines modulated power signals output from the amplifier blocks to generate an RF power signal of a load. The amplifier blocks are controlled to outphase the modulated power signals based on a phase angle. Ones of the amplifier blocks may perform discrete modulation to generate a respective one of the modulated power signals. The discrete modulation includes selecting different combinations of the amplifiers in one or more of the amplifier blocks to change the RF power signal in discrete steps. In embodiments, the amplifiers may be radio frequency power amplifiers.
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公开(公告)号：US12009746B2
公开(公告)日：2024-06-11
申请号：US17605255
申请日：2020-06-12
Applicant: Massachusetts Institute of Technology
Inventor： David J. Perreault , Jessica Boles , Joshua Piel
IPC: H02M3/155
CPC classification number: H02M3/155
Abstract: A dc-dc converter can include a plurality of switches, a piezoelectric resonator (PR) for power stage energy storage, and a means for controlling one or more switching sequences. The switches operate in accordance with the switching sequences to transfer energy from the input to the output via the PR while providing low-loss resonant soft-charging of the PR's capacitance. The switching sequences include: connected stages in which a first and second PR terminals are both connected to one of the input, the output, or the other PR terminal; and open stages in which at least one of the first or second PR terminal is not connected by a closed switch to one of the input, the output, or the other PR terminal.
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公开(公告)号：US11942898B2
公开(公告)日：2024-03-26
申请号：US17703230
申请日：2022-03-24
Applicant: Massachusetts Institute of Technology
Inventor： Alexander Sergeev Jurkov , David J. Perreault
IPC: H03F1/02 , H03F1/56 , H03F3/19 , H03F3/193 , H03F3/21 , H03F3/217 , H03F3/24 , H03K7/08 , H03H7/38
CPC classification number: H03F1/0205 , H03F1/56 , H03F1/565 , H03F3/19 , H03F3/193 , H03F3/21 , H03F3/2171 , H03F3/2176 , H03F3/245 , H03K7/08 , H03F3/2178 , H03F2200/301 , H03F2200/387 , H03F2200/391 , H03F2200/451 , H03H7/38
Abstract: Described are concepts, systems, circuits and techniques directed toward methods and apparatus for generating one or more pulse width modulated (PWM) waveforms with the ability to dynamically control pulse width and phase with respect to a reference signal.
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公开(公告)号：US09853550B2
公开(公告)日：2017-12-26
申请号：US14435914
申请日：2013-10-31
Applicant: Massachusetts Institute of Technology
Inventor： David J. Perreault , Khurram K. Afridi , Samantha J. Gunter
CPC classification number: H02M3/33507 , H02M1/4241 , H02M1/44 , H02M3/33523 , H02M3/3376 , H02M2001/0048 , H02M2001/0054 , H02M2001/0058 , H02M2001/0074 , H02M2001/0077 , Y02B70/1491
Abstract: A power converter for converting DC power to DC power includes an inverter stage having two or more switched inverters configured to receive DC power from a source and produce a switched AC output power signal. A transformation stage is coupled to receive the switched output power signal from the inverter stage, shape the output power signal, and produce a shaped power signal. A rectifier stage having two or more switched inverters coupled to receive the shaped power signal and convert the shaped power signal to a DC output power signal is included. A controller circuit is coupled to operate the power converter in a variable frequency multiplier mode where at least one of the switched inverters is switched at a frequency or duty cycle that results in an output signal having a frequency that is a harmonic of the fundamental frequency being generated by the power converter.
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Patent Agency Ranking
公开(公告)号：US09667139B2
公开(公告)日：2017-05-30
申请号：US14708903
申请日：2015-05-11
Applicant: Massachusetts Institute of Technology
Inventor： David M. Giuliano , David J. Perreault , Robert C. N. Pilawa-Podgurski
CPC classification number: H02M3/158 , H02M3/07 , H02M3/155 , H02M2001/007
Abstract: A converter circuit and related technique for providing high power density power conversion includes a reconfigurable switched capacitor transformation stage coupled to a magnetic converter (or regulation) stage. The circuits and techniques achieve high performance over a wide input voltage range or a wide output voltage range. The converter can be used, for example, to power logic devices in portable battery operated devices.
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公开(公告)号：US20160181986A1
公开(公告)日：2016-06-23
申请号：US14974563
申请日：2015-12-18
Applicant: Massachusetts Institute of Technology
Inventor： David J. Perreault , Alexander Sergeev Jurkov
CPC classification number: H03F1/0205 , H03F1/56 , H03F1/565 , H03F3/19 , H03F3/193 , H03F3/21 , H03F3/2171 , H03F3/2176 , H03F3/245 , H03F2200/301 , H03F2200/387 , H03F2200/391 , H03F2200/451 , H03H7/38
Abstract: Described is a phase-switched tunable impedance matching network (PS-TMN). The PS-TMN has an input that can be coupled to a source and an output that can be coupled to a load. The PS-TMN includes one or more phase-switched reactive elements and a controller. The controller provides a control signal to each of the one or more phase-switched reactive elements. In response to one or more control signals provided thereto, each phase-switched reactive element provides a corresponding selected reactance value.
Abstract translation: 描述了相位可调阻抗匹配网络（PS-TMN）。 PS-TMN具有可以耦合到可耦合到负载的源和输出的输入。 PS-TMN包括一个或多个相位切换无功元件和控制器。 控制器向一个或多个相位切换无功元件中的每一个提供控制信号。 响应于提供给其的一个或多个控制信号，每个相位切换无功元件提供相应的选择的电抗值。
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8.发明申请Apparatus For Multi-Level Switched-Capacitor Rectification And DC-DC Conversion 有权多电平开关电容整流和直流 - 直流转换装置公开(公告)号：US20150188448A1
公开(公告)日：2015-07-02
申请号：US14416654
申请日：2013-08-13
Applicant: Massachusetts Institute of Technology
Inventor： David J. Perreault , Wei Li , Nathaniel Jay T. Salazar
IPC: H02M7/217
CPC classification number: H02M7/217
Abstract: A voltage-step down rectifier topology suitable for integration on a die of an integrated circuit is described. In one embodiment, a switched capacitor rectifier is provided having an architecture such that an input voltage swing of the switched-capacitor rectifier is a factor N times an output voltage where N depends upon the number of stages such that the switched-capacitor rectifier can provide a π/(2N) step-down voltage conversion ratio between an input fundamental ac peak voltage to the output dc voltage. In one embodiment, the rectifier is used in dc-dc conversion. In one embodiment, the rectifier is used in ac power delivery to low-voltage electronics.
Abstract translation: 描述适用于集成在集成电路的管芯上的电压降压整流器拓扑。 在一个实施例中，提供了开关电容整流器，其具有使得开关电容整流器的输入电压摆幅为输出电压的N倍的结构，其中N取决于级数，使得开关电容整流器可以提供 输入基本交流峰值电压与输出直流电压之间的压降/（2N）降压电压转换比。 在一个实施例中，整流器用于dc-dc转换。 在一个实施例中，整流器用于向低压电子设备的交流电力输送。
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公开(公告)号：US20240372470A1
公开(公告)日：2024-11-07
申请号：US18685983
申请日：2022-10-05
Applicant: Massachusetts Institute of Technology
Inventor： Jeffrey H. Lang , David J. Perreault , Jessica Boles , Joseph Bonavia
Abstract: According to one aspect of the present disclosure, an electrical-to-electrical power converter includes an energy storage component including a transducer material and a second material for mechanical energy storage, the second material attached to the transducer material. In some embodiments, the transducer material and the second material are both configured to store mechanical energy.
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公开(公告)号：US20240213883A1
公开(公告)日：2024-06-27
申请号：US18557172
申请日：2022-07-07
Applicant: Massachusetts Institute of Technology
Inventor： Jessica Boles , Elaine Ng , Jeffrey H. Lang , David J. Perreault
CPC classification number: H02M3/33576 , H02M3/01 , H02M3/33573
Abstract: According to one aspect of the disclosure, a converter having a first port and a second port, the converter comprises: a piezoelectric transformer (PT) having a first port and a second port; one or more first switches configured to operate in accordance with a first switching sub-sequence to transfer energy from the first port of the converter to the first port of the PT, the first switching sub-sequence having at least six (6) stages; and one or more second switches configured to operate in accordance with a second switching sub-sequence to transfer energy from the second port of the PT to the second port of the converter.
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