Hamilton Sundstrand Corporation

Otis Elevator Company

Carrier Corporation

B/e Aerospace, Inc.

Nippon Otis Elevator Company

Suman Dwari

Enrico Manes

Stephen Savulak

Brian St Rock

Parag M Kshirsagar

Xin Wu

Ronnie E Thebeau

Jeffrey Ewanchuk

Arthur Hsu

Peter R Harris

Goran Djuknic

Rajiv Ranjan

Yongduk Lee

Dang V Nguyen

Lei Xing

Baljit Singh Riar

W Warren Chen

Joseph V Mantese

Michael L Perry

Parmesh Verma

Jagadeesh Kumar Tangudu

Scott Alan Eastman

David Ginsberg

Craig Drew Bogli

Vladimir Blasko

Gurkan Gok

Jinliang Wang

Wei Xie

Subramanyaravi Annapragada

Michael Garfinkel

Sriram Chandrasekaran

Beata I Wawrzyniak

Sreenivasa R Voleti

Atsushi Yamada

Tod Policandriotes

Bo Liu

Ben Guo

Parikshith B Channegowda

Ajit Rajagopalan

Parikshith Channegowda

Weilun Chen

A system having: a power switching circuit providing a drive current to a load, and having: a power source; first and second serially connected switches convert DC power from the power source into AC current to form the drive current, or vice versa; a first high-bandwidth current sensor circuit measures high-side current pulses through the first switch and provides a first analog signal, proportional to the high-side pulses; a second high-bandwidth current sensor circuit measures low-side current pulses through the second switch and provides a second analog signal is proportional to the low-side pulses; a signal processing device coupled to the first and second current sensor circuits performs steps of: converting the first analog signal to a first digital signal and the second analog signal to a second digital signal; and reconstructing the drive current and obtaining its cycle average values from the first and second digital signals.

Current sensor for power electronic converter

An elevator system includes a hoistway, an elevator car movable along the hoistway, and a power management and transfer system. The power management and transfer system includes an electrical power source, a hoistway contactor secured in the hoistway and operably connected to the electrical power source, and a car contactor disposed at the elevator car, such that when the car contactor is brought into operable contact with the hoistway contactor, electrical power is transferrable between the power source and the elevator car.

Electrical power transmission to elevator system cars

A system can include a bi-directional converter circuit comprising a plurality of switches and at least one flying capacitor. One or more the plurality of switches can experience overvoltage in a fault state. The system can include a control module operatively connected to the plurality of switches to control a state of the plurality of switches. The control module can be configured to receive a sense signal indicative of flying capacitor voltage and to control the one or more switches of the plurality of switches to turn on or remain on to prevent switch overvoltage of the one or more switches if the flying capacitor voltage is outside of a normal range.

Bi-directional converter protection systems

A system can include a bi-directional converter circuit comprising a plurality of switches and a flying capacitor configured to experience a low voltage or a high voltage, and a control module operatively connected to the plurality of switches to control a state of the plurality of switches. The control module can be configured to receive a sense signal indicative of a flying capacitor voltage and to control the one or more switches of the plurality of switches to charge or discharge the flying capacitor to maintain a target voltage or target voltage range.

Converter circuits

An aspect includes a system with an energy storage device configured to provide electrical power to a conveyance apparatus of a conveyance system, a power management system configured to determine a charging schedule to recharge the energy storage device based at least in part on a status of the conveyance system, and a dispatching system configured to modify a dispatch schedule of the conveyance system based at least in part on the charging schedule.

Energy-aware dispatching for conveyance systems

A scanner of an optical detection system includes a housing, an optical surface coupled to the housing, and an actuator coupled to the optical surface. The optical surface is movable to direct light into an area being scanned and to receive a reflected light pulse from the area being scanned. The actuator is operable to agitate the optical surface to remove debris from the optical surface.

Vibration based actuator system for cleaning of optical surface

A power converter includes an amplifier, an inductor, a capacitor, and an interconnection block formed of an insulating material having conductive material deposited thereon by a multi-material printing process. The interconnection block supports one of the inductor and the capacitor in a manner that the one the inductor and the capacitor is disposed vertically above an other of the inductor and the capacitor.

Compact circuit devices using ceramic-copper layers based packaging

A detection system includes a central manifold including a detection chamber, a pipe network including at least one pipe fluidly coupled to the central manifold, a plurality of inlets formed over a length of the at least one pipe and an aspirating mechanism operable to draw a fluid flow at each of the plurality of inlets through the pipe network to the central manifold. A plurality of independently operable flow control devices is associated with the plurality of inlets. At least one of the plurality of flow control devices includes a solid state flexible polymer deformable in response to application of a voltage.

Electroactive actuators as sampling port valves for aspirating contaminant detection

Systems and methods for health monitoring and fault detection in power distribution networks are provided. Aspects include providing a first power supply coupled to a power channel, providing a load coupled to the power channel, providing a transmitting sensor coupled to the power channel between the first power supply and the load, providing a receiving sensor coupled to the power channel between the transmitting sensor and the load, operating the transmitting sensor to provide an AC test signal to the power channel, the AC test signal comprises a predefined test signal pattern, operating the receiving sensor to sense, from the power channel, a continuous power signal including the AC test signal, analyzing, by the controller, the AC test signal to determine a fault of the power channel based on comparing the predefined test signal pattern with a predefined nominal probe signal pattern corresponding to a specific network configuration.

Online health monitoring and fault detection for high voltage DC distribution networks

A hybrid energy storage system for an elevator car includes a converter disposed on the elevator car and receives power from a power source and provides a first DC voltage to a first DC bus and a second DC voltage to a second DC bus, a first energy storage device connected to the converter receives the first DC voltage on the first DC bus, and a second energy storage device connected to the converter receives the second DC voltage on the second DC bus. The system also includes a first load connected to the first DC bus and a second DC bus, and a second load connected to the second DC bus. Power is provided from the first energy storage device to the first load under a first selected condition and power is supplied from the second energy storage device to the first load under second selected condition.

Hybrid energy storage system architectures

Provided are embodiments for a method and a hybrid axial/radial motor. Embodiments can include a central rotor that includes an axial segment, a first radial segment, and a second radial segment, wherein the first radial segment extends axially from a first side of the axial segment and the second radial segment extends axially from a second side of the axial segment, wherein the first side is opposite the second side. Embodiments can also include a stator adapted to receive the first radial segment or the second radial segment of the central rotor.

Hybrid axial/radial electric motor

A power converter can include a first line, a second line, a capacitor line disposed between the first line and the second line, a first capacitor and a second capacitor connected to the capacitor line in series between the first line and the second line, a midpoint line connected to a midpoint between the first capacitor and the second capacitor, and a protection circuit disposed between the first capacitor and the second capacitor and configured to provide protection to one or more portions of the power converter.

Protection circuitry for power converters

An electrical power distribution system includes a first high side sub-module including a high side converter and a high side energy storage device. The first high side sub-module is electrically coupled to a high side load that requires a high voltage or medium voltage DC, the high voltage DC being higher than the medium voltage DC. The system also includes a first low side sub-module including a low side converter and a low side energy storage device. The first high side sub-module and the first low side sub-module are configured to be inductively coupled. The first high side sub-module and the first low side sub-module form a first module.

Modular solid-state power converter and fault protector

According to a wireless power transfer system for wirelessly powering a conveyance apparatus of a conveyance system including: a wireless electrical power transmitter located along a side of the conveyance system in a first location; a power management system configured to control operation of the wireless electrical power transmitter; a wireless electrical power receiver located along a surface of the conveyance apparatus opposite the side; an energy storage device configured to receive electrical power from the wireless electrical power receiver; an energy storage device management system configured to monitor data of the energy storage device and the conveyance apparatus, the energy storage device management system being in wireless communication with the power management system, wherein the energy storage device management system is configured to transmit the data to the power management system and the power management system adjusts operation of the wireless electrical power transmitter in response to the data.

Closed loop control wireless power transmission system for conveyance system

An apparatus for modular AC to AC frequency conversion is disclosed. An input AC source is configured to generate an input AC voltage at a first frequency. At least one primary low frequency (LF) conversion stage is configured to generate a DC voltage, and comprises a first pair of metal-oxide-semiconductor field effect transistors (MOSFETs). At least one primary high frequency (HF) conversion stage is configured to generate the DC voltage, and comprises a first pair of high electron mobility transistors (HEMTs). At least one secondary LF conversion stage is configured to receive the DC voltage and generate an output AC voltage at a second frequency, and comprises a second pair of MOSFETs. At least one secondary HF conversion stage is configured to receive the DC voltage and generate the output AC voltage at the second frequency, and comprises a second pair of HEMTs.

AC-to-AC power supplies using multi-frequency power conversion building blocks

Growing community of inventors

Vernon, CT, United States of America

Suman Dwari