公开(公告)号：US20240030709A1

公开(公告)日：2024-01-25

申请号：US18355239

申请日：2023-07-19

Applicant: Smart Wires Inc.

Inventor： Amrit Iyer ,  Mahsa Ghapandar Kashani ,  Muhammad Fahad Ijaz

IPC: H02J3/18 ,  H02M3/158 ,  H02M1/14

CPC classification number: H02J3/18 ,  H02M3/158 ,  H02M1/14

Abstract: A modular power converter is operable to mitigate a DC component of injection onto a power transmission line. The modular power converter includes a pulse width modulation (PWM)-controlled generator, a voltage emulator, and a control circuit. The PWM-controlled generator includes drivers and a coupling capacitor. The PWM-controlled generator is to store voltage on the coupling capacitor and inject a voltage of the converter, which includes the DC component of injection, onto the power transmission line. The voltage emulator is to determine a DC measurement emulating the voltage of the converter, as a time-varying average value that is based on summing generator driver-state weighted values of the voltage on the coupling capacitor. The control circuit is to generate PWM pulses to operate the PWM-controlled generator and adjust timing of the PWM pulses, based at least on the DC measurement from the voltage emulator to counter-balance the DC component of injection.

公开(公告)号：US11812592B1

公开(公告)日：2023-11-07

申请号：US17962034

申请日：2022-10-07

Applicant: Smart Wires Inc.

Inventor： Haroon Inam ,  Ali Farahani

IPC: H05K7/20 ,  H01L23/473

CPC classification number: H05K7/20927 ,  H01L23/4735 ,  H05K7/20254 ,  H05K7/20272

Abstract: A modular liquid cooling block is described for cooling high current devices deployed in power flow control systems. The liquid cooling blocks may have separate shower heads which may be configured for direct impingement, indirect impingement, or parallel flow cooling configurations. Voltage isolation of liquid cooling blocks from an enclosure of the power flow control system and from associated equipment enables serial or parallel connected power flow control units to inject substantial reactive power that may be configurable into a power transmission line. Associated power flow control systems are monitored for temperature, flow rate and pressure gradient. Redundant pumps and fan radiators contribute to reliable operation. Automatic shutdown and alarm may be provided.

公开(公告)号：US11735922B2

公开(公告)日：2023-08-22

申请号：US17332011

申请日：2021-05-27

Applicant: Smart Wires Inc.

Inventor： Shreesha Adiga Manoor ,  Michael Thomas Garrison Stuber ,  Antonio Ginart ,  Haroon Inam

IPC: H02J3/18 ,  H02J3/00 ,  H02J13/00 ,  G05F1/70 ,  H02J3/06 ,  H02J3/12 ,  H02J3/20

CPC classification number: H02J3/1814 ,  G05F1/70 ,  H02J3/00125 ,  H02J3/06 ,  H02J3/12 ,  H02J3/20 ,  H02J13/00002 ,  H02J13/00034

Abstract: An impedance injection unit (IIU) system is coupled to a high-voltage (HV) transmission line. The IIUs are activated in sequences of activation in successive time periods. This injects an impedance waveform onto the HV transmission line. The ordering of IIUs in the sequences of activation is repeatedly changed in successive time periods. This equalizes electrical stress across the IIUs used, leading to overall improvement in IIU system lifetimes.

公开(公告)号：US20230216301A1

公开(公告)日：2023-07-06

申请号：US17856598

申请日：2022-07-01

Applicant: Smart Wires Inc.

Inventor： Haroon Inam

IPC: H02J3/18 ,  H02J3/38 ,  H02M1/42 ,  H02J3/32

CPC classification number: H02J3/1842 ,  H02J3/381 ,  H02M1/4233 ,  H02J3/32 ,  H02J2300/22 ,  H02J2300/28

Abstract: A system for managing power delivery and power flow in a distribution grid having grid forming capability is disclosed. The system includes a connect-disconnect switches operable to connect a power transmission grid to and disconnect the power transmission grid from the distribution grid. The distribution grid includes renewable energy generators and a number of loads. The system further includes a full bridge shunt inverter system connected to the distribution grid. The full bridge shunt inverter system includes a four-quadrant DC-to-AC inverter and at least a battery for power storage and operable as a power source for grid formation. The system further includes a pair of active filters connected in series on the distribution grid. The full bridge shunt inverter system is connected to the distribution grid at a node between the active filters to enable impedance adjustment for managing and controlling the power flow in the distribution grid.

公开(公告)号：US11476031B1

公开(公告)日：2022-10-18

申请号：US16155638

申请日：2018-10-09

Applicant: Smart Wires Inc.

Inventor： Ali Farahani

IPC: H01F27/08 ,  H01F27/22 ,  H01F27/00 ,  H01F27/28 ,  H01F27/24

Abstract: A transformer for power line reactance injection that can be adapted in manufacturing to different operating current ranges by interchanging primary windings having one, two, three, four or more laminar turns. Through its use of gaps in the magnetic circuit that are filled with high temperature, high thermal conductivity dielectrics, this transformer has tolerance to very high fault currents, and it can be passively cooled by the use of fins on the exterior walls of the core.

公开(公告)号：US11303110B1

公开(公告)日：2022-04-12

申请号：US16922882

申请日：2020-07-07

Applicant: Smart Wires Inc.

Inventor： Amrit Iyer ,  Govind Chavan ,  Liyu Cao ,  Brock Petersen ,  Haroon Inam ,  Antonio Ginart

IPC: H02H7/26 ,  H02H1/00 ,  H03K19/0175 ,  H03K17/72

Abstract: A system and method using thyristors to protect a series-connected Flexible AC Transmission Systems (FACTS) device from surge currents are disclosed. According to some embodiments, the system includes a thyristor connected in shunt with the FACTS device to be protected. The system further includes control circuitry coupled to the thyristor to drive a gate of the thyristor with a direct current (DC) signal and turn on the thyristor in a time span on order of microseconds. The system and method can be used to protect any series-connected FACTS device that is in danger of being exposed to surge current such as a reclose after a deadline.

公开(公告)号：US11271488B2

公开(公告)日：2022-03-08

申请号：US16890650

申请日：2020-06-02

Applicant: Smart Wires Inc.

Inventor： Amrit Iyer ,  Antonio Ginart ,  Shreesha Adiga Manoor ,  Haroon Inam

IPC: H02J3/18 ,  H02M5/12 ,  H02J3/00 ,  H02M1/32

Abstract: A system and method using four switches connected in an H-bridge (full bridge) topology within a series-connected FACTS device is disclosed. System and method can be used to bypass a FACTS device. The switches in H-bridge are connected to an alternating current (AC) source allowing for various switching states, and enabling non-monitoring mode, local bypass monitoring mode, low-loss monitoring mode, and diagnostic mode of operation.

公开(公告)号：US11271402B2

公开(公告)日：2022-03-08

申请号：US16814647

申请日：2020-03-10

Applicant: Smart Wires Inc.

Inventor： Antonio Ginart ,  Shreesha Adiga Manoor ,  Mahsa Ghapandar Kashani ,  Hamed Khalilinia ,  Haroon Inam ,  Amrit Iyer ,  Govind Chavan ,  Niloofar Torabi

IPC: H02J3/26 ,  H02J3/01 ,  H02J3/38 ,  H02J13/00 ,  H02M7/49 ,  H02M7/48

Abstract: The presence of injected DC has harmful consequences for a power grid system. A piecewise sinusoidal ripple voltage wave at the line-frequency that rides on the main capacitor bank of the power converter is observed. This observation leads to a new DC detection elimination method. Three DC elimination methods for this ripple component are disclosed to allow dissipation of DC energy through heat and/or electromagnetic wave, or to allow transformation of this energy into usable power that is fed back into the power grid.

公开(公告)号：US20210384727A1

公开(公告)日：2021-12-09

申请号：US17445802

申请日：2021-08-24

Applicant: Smart Wires Inc.

Inventor： Antonio Ginart ,  Michael T. Garrison Stuber ,  Haroon Inam ,  Shreesha Adiga Manoor

IPC: H02J3/06 ,  G05B13/02 ,  H02J3/18 ,  H02J3/24

Abstract: In prior art grid systems, power-line control is done by substation based large systems that use high-voltage (HV) circuits to get injectable impedance waveforms that can create oscillations on the HV power lines. Intelligent impedance injection modules (IIMs) are currently being proposed for interactive power line control and line balancing. These IIMs distributed over the high-voltage lines or installed on mobile platforms and connected to the HV power lines locally generate and inject waveforms in an intelligent fashion to provide interactive response capability to commands from utility for power line control. These IIMs typically comprise a plurality of impedance-injection units (IIUs) that are transformer-less flexible alternating current transmission systems interconnected in a series-parallel connection and output pulses that are additive and time synchronized to generate appropriate waveforms that when injected into HV transmission lines are able to accomplish the desired response and provide interactive power flow control.

公开(公告)号：US20210288489A1

公开(公告)日：2021-09-16

申请号：US17176979

申请日：2021-02-16

Applicant: Smart Wires Inc.

Inventor： Haroon Inam ,  Ali Farahani ,  Amrit Iyer ,  Niloofar Torabi ,  Zbigniew Wolanski ,  Guiping Zou

IPC: H02H7/26 ,  H02H1/00 ,  H02J13/00

Abstract: An apparatus for injecting impedance into a high voltage (HV) transmission line is disclosed. The apparatus comprises a plurality of modular flexible alternating current transmission systems (FACTS) based impedance injection units (IIUs), each modular FACTS based IIU without fault current protection. The apparatus further comprises a fault current protection module external to the modular FACTS based IIUs. The fault current protection module is coupled to the modular FACTS based IIUs to provide fault current protection to the modular FACTS based IIUs.