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公开(公告)号：US20210359594A1
公开(公告)日：2021-11-18
申请号：US17209073
申请日：2021-03-22
Applicant: Delta Electronics, Inc.
Inventor： Chi ZHANG , Zhiyu SHEN , Yungtaek JANG , Sheng-Hua LI , Ruxi WANG , Peter Mantovanelli BARBOSA
Abstract: The present disclosure provides a three-phase AC/DC converter aiming for low input current harmonic. The converter includes an input stage for receiving a three-phase AC input voltage, an output stage for at least one load, and one or more switching conversion stages, each stage including a plurality of half bridge modules. The switches in each module operate with a substantially fixed 50% duty cycle and are connected in a specific pattern to couple a DC-link and a neutral node of the input voltage. The AC/DC converter further includes one or more controllers adapted to vary the switching frequency of the switches in the switching conversion stages based on at least one of load voltage, load current, input voltage, and DC-link voltage. The converter can also include one or more decoupling stages, such as, inductive components adapted to decouple the output stage from the switching conversion stages.
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公开(公告)号：US20220344092A1
公开(公告)日：2022-10-27
申请号：US17471142
申请日：2021-09-09
Applicant: Delta Electronics, Inc.
Inventor： Ruxi WANG , Zhiyu SHEN , Chi ZHANG , Peter Mantovanelli BARBOSA
Abstract: The present disclosure provides a printed circuit board (PCB) based planar winding structure for a main power transformer and/or an auxiliary power need. The PCB-based planar winding structure can confine electric field through magnetic core potential control and thus create partial discharge (PD) free design for medium voltage (MV) applications. Meanwhile, the winding structure can be formed in the PCB manufacturing process to create a more modular and reliable structure, thereby enhancing manufacturability. Techniques, such as termination treatment, primary and secondary winding arrangements, etc., can be used to control the electrical stress in the medium voltage applications.
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3.发明申请公开(公告)号：US20200044561A1
公开(公告)日：2020-02-06
申请号：US16390016
申请日：2019-04-22
Applicant: Delta Electronics, Inc.
Inventor： Wei SUN , Wenjiang ZHAO , Yongqiang LANG , Peter Mantovanelli BARBOSA
Abstract: A dead zone compensation circuit includes: a coordinate transformation module configured to perform a coordinate transformation on three-phase output currents of the three-phase frequency converter based on a given angle, for transforming the three-phase output currents from a three-phase static coordinate to a two-phase rotary coordinate to obtain a reactive current component of the three-phase output currents; a filter module configured to obtain a reactive current fluctuation amount; an error calculation module configured to calculate an error between the reactive current fluctuation amount and a zero value; a regulation and control module configured to regulate and control the reactive current fluctuation amount based on the error, for obtaining a voltage regulation variation; and a summing module configured to add the voltage regulation variation to a reference voltage, for obtaining a regulated voltage, the regulated voltage being used to generate a driving signal for the three-phase frequency converter.
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公开(公告)号：US20230088584A1
公开(公告)日：2023-03-23
申请号：US17482981
申请日：2021-09-23
Applicant: Delta Electronics, Inc.
Inventor： Yuri PANOV , Peter Mantovanelli BARBOSA , Yihua CHANG , Kai DONG
Abstract: The present disclosure provides a control method, in which charge control is combined with input voltage feedforward control and output current feedforward control. It can be shown that the combination of the charge control with the feedforward control performs better than the combination of the direct frequency control (DFC) with the feedforward control. In particular, the combination of the charge control with the feedforward control has much better load transient response with respect to the load transient response of the combined direct frequency control and feedforward control.
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Patent Agency Ranking
公开(公告)号：US20220344946A1
公开(公告)日：2022-10-27
申请号：US17483518
申请日：2021-09-23
Applicant: Delta Electronics, Inc.
Inventor： Ruxi WANG , Zhiyu SHEN , Chi ZHANG , Tomas SADILEK , Peter Mantovanelli BARBOSA
IPC: H02J7/00 , H03K17/687
Abstract: The present disclosure provides a high voltage device built from modular low voltage cells. Each low voltage cell includes a plurality of low voltage semiconductor devices and one or more low voltage passive components. Each cell can be a current-bidirectional two-quadrant switch or a four-quadrant switch. All the cells may be identical and controlled with a delay time in between. Therefore, the total on and off time of the high voltage device can be controlled to reduce the output equivalent dv/dt. The cell's voltage balancing can be achieved through a control algorithm disclosed herein.
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公开(公告)号：US20170222541A1
公开(公告)日：2017-08-03
申请号：US15014025
申请日：2016-02-03
Applicant: DELTA ELECTRONICS, INC.
Inventor： Peter Mantovanelli BARBOSA , Chia-Hsun WU , Chih-Chiang CHAN
IPC: H02M1/32
CPC classification number: H02M1/32 , H02M1/088 , H02M3/285 , H02M2001/0074
Abstract: A power converter and a method are disclosed. The power converter includes a plurality of converting modules and a plurality of switching circuits. Each of the converting modules includes a bypass element configured to be shorted when a fault occurs. The switching circuits are electrically coupled in series to each other and electrically coupled in parallel to the converting modules respectively. Any one of the switching circuits is configured to be shorted when the bypass element of the corresponding converting module is shorted.
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公开(公告)号：US20240014743A1
公开(公告)日：2024-01-11
申请号：US17861157
申请日：2022-07-08
Applicant: Delta Electronics, Inc.
Inventor： Satyaki MUKHERJEE , Chi ZHANG , Tomas SADILEK , Misha KUMAR , Boyi ZHANG , Peter Mantovanelli BARBOSA
CPC classification number: H02M3/33592 , H02M3/01 , H02M1/0058 , H02M1/0009 , H02M3/33573
Abstract: A novel phase-shift based modulation strategy is disclosed that enables a DC-DC converter to operate with zero voltage-switching (ZVS) across wide voltage and power range. The converter operates at a fixed fundamental frequency, with the output current controlled based on an amount of phase shift of the fundamental component at the output of an inverter portion of the converter. To achieve soft switching a rectifier portion of the converter is controlled to phase shift the fundamental component of the rectifier voltage observed at a rectifier reference terminal. More specifically, by requiring a phase shift of the voltage at the rectifier terminal relative to the output voltage of the inverter, the inverter current is such that ZVS is achieved. A converter and method are provided to implement DC-DC conversion with soft switching.
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公开(公告)号：US20230188032A1
公开(公告)日：2023-06-15
申请号：US18163960
申请日：2023-02-03
Applicant: Delta Electronics, Inc.
Inventor： Chi ZHANG , Zhiyu SHEN , Yungtaek JANG , Sheng-Hua LI , Ruxi WANG , Peter Mantovanelli BARBOSA
CPC classification number: H02M1/4216 , H02M1/12 , H02M7/2173 , H02M7/219 , H02M7/2195 , H02M7/23
Abstract: The present disclosure provides a three-phase AC/DC converter aiming for low input current harmonic. The converter includes an input stage for receiving a three-phase AC input voltage, an output stage for at least one load, and one or more switching conversion stages, each stage including a plurality of half bridge modules. The switches in each module operate with a substantially fixed 50% duty cycle and are connected in a specific pattern to couple a DC-link and a neutral node of the input voltage. The AC/DC converter further includes one or more controllers adapted to vary the switching frequency of the switches in the switching conversion stages based on at least one of load voltage, load current, input voltage, and DC-link voltage. The converter can also include one or more decoupling stages, such as, inductive components adapted to decouple the output stage from the switching conversion stages.
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公开(公告)号：US20210408922A1
公开(公告)日：2021-12-30
申请号：US17363119
申请日：2021-06-30
Applicant: Delta Electronics, Inc.
Inventor： Chi ZHANG , Zhiyu SHEN , Ruxi WANG , Peter Mantovanelli BARBOSA
Abstract: The present disclosure provides a series resonant converter and its corresponding control method. In one aspect, the series resonant converter includes m (m=1, 2, 3, . . . ) sets of primary side stages in parallel, wherein each primary side stage is identical and includes n (n=2, 3, . . . ) stacked element circuits, where the primary side stages receive an input voltage; nxm resonant networks coupled to the primary side stages; nxm transformers having nxm primary side windings and nxm secondary side windings, where the primary side windings are coupled to the nxm resonant networks; p (p=1, 2, 3, . . . ) sets of secondary side stages in parallel, wherein each secondary side stage is identical and includes q (q=n×m/p) stacked element circuits, where the secondary side stages are coupled to n×m secondary side windings; and a control block controlling the primary side switches according to the output voltage, input voltage and input capacitor voltages.
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