公开(公告)号：US12166432B2

公开(公告)日：2024-12-10

申请号：US18010648

申请日：2021-06-30

Applicant: Khalifa University of Science and Technology

Inventor： Igor Boiko ,  Ahmed Shehada ,  Balanthi Mogru Abdul Rahiman Beig ,  Yan Yan

IPC: H02M7/5387 ,  G05B11/42 ,  H02M1/00 ,  H02M1/12

Abstract: A system including a proportional-integral-derivative (PID) controller, a modified relay feedback test (MRFT) block, a memory block, a biasing block, a dq0-to-abc transformation block, a switch configured to selectively couple output signal of the biasing block or the PID controller output signal to the input of the dq0-to-abc transformation block, a three phase digital pulse width modulator, electronic switches, a voltage sensor configured to measure the output of each voltage of the three phases on the load and produce voltage data signals (Voa, Vob, Voc), and an abc-to-dq0 transformation block having an input being a representative of the phase voltages on the load, and producing an output being a representative of these voltages in the dq0 format.

公开(公告)号：US12259713B2

公开(公告)日：2025-03-25

申请号：US18010087

申请日：2021-06-29

Applicant: Khalifa University of Science and Technology

Inventor： Igor Boiko ,  Ahmed Shehada ,  Balanthi Mogru Abdul Rahiman Beig ,  Yan Yan

IPC: G05B19/4155

Abstract: A method of automatically tuning a proportional-integral-derivative (PID) controller (102) controlling a DC-DC converter (100) includes substituting the PID controller (102) with a modified relay feedback test (MRFT) (104) controller having a threshold parameter (β) and a magnitude parameter (h), iteratively determining a current error signal (e[k]) by measuring an output voltage (Vo[k]) of the DC-DC converter (100) and comparing it to a desired reference output voltage (Vo-ref), input the error signal (e[k]) to the MRFT (104), determining an output value (u[k]) of the MRFT, update the duty cycle (D) based on the output value (u[k]), operating the DC-DC converter (100) using the updated duty cycle (D), exciting oscillations in the loop containing the MRFT (104) and the DC-DC converter (100), measuring a frequency (Ω0) and amplitude (α0) of the output voltage (Vo[k]), updating PID controller parameters based on the frequency (Ω0) and amplitude (α0), and substituting the MRFT (104) with the PID controller (102).

公开(公告)号：US20240405680A1

公开(公告)日：2024-12-05

申请号：US18699679

申请日：2021-10-21

Applicant: Khalifa University of Science and Technology

Inventor： Balanthi Mogru Abdul Rahiman Beig ,  Motiur Reza Mohammed ,  Khaled Ali Mohammed AL JAAFARI ,  Khalifa Hassan Al Hosani

IPC: H02M3/158 ,  B60L50/40 ,  H02M1/36 ,  H02M3/06

Abstract: A bidirectional direct current-to-direct current (DC-DC) converter includes a converter (500), which can be operated as a boost or buck converter, and a control unit. The converter (500) consists of a set of inductors (L1, L2), a set of capacitors (C1, C2), and a set of switches (GS1-GS5). The control unit can be configured to activate the converter (500) as boost converter by turning ON first switches (GS2, GS3) of the set of switches and turning OFF remaining second switches (GS1, GS4, GS5) of the set of switches. The control unit can be configured to activate the converter as the buck converter by turning OFF the first switches (GS2, GS3) and turning ON (GS1, GS4, GS5) the remaining second switches.

公开(公告)号：US12081111B2

公开(公告)日：2024-09-03

申请号：US17800196

申请日：2021-03-09

Applicant: Khalifa University of Science and Technology

Inventor： Balanthi Mogru Abdul Rahiman Beig ,  Anish Ahmad ,  Jamal Alsawalhi ,  Khaled Ali Mohammed Ali Ai Jaafari

IPC: H02M1/00 ,  H02M1/14 ,  H02M3/07 ,  H02M3/158 ,  B60L15/00

CPC classification number: H02M1/0095 ,  H02M1/14 ,  H02M3/07 ,  H02M3/158 ,  B60L15/007 ,  B60L2210/12 ,  B60L2210/14 ,  H02M3/1582

Abstract: A bi-directional DC voltage converter includes a controller, controlled switches, inductors, and capacitors to accomplish DC voltage conversion with minimal input current ripple and high efficiency. The controller is operable in a boost mode in which the switches are independently controlled to convert low-voltage DC power to high-voltage DC power. The controller is operable in a buck mode in which the switches are independently controlled to convert high-voltage DC power to low-voltage DC power.