公开(公告)号：US10715029B1

公开(公告)日：2020-07-14

申请号：US16271337

申请日：2019-02-08

Applicant: Hamilton Sundstrand Corporation

Inventor： Randall Bax ,  Dwight D. Schmitt

IPC: H02M1/12 ,  H02M5/42 ,  H02P9/02 ,  H02M1/32 ,  H02M1/00

Abstract: A generator system can include a generator configured to produce an output of alternating current (AC), a rectifier connected to the generator to rectify the AC into direct current (DC) rectifier output, an inverter connected to the rectifier to receive the DC rectifier output and configured to output three phase AC inverter output, and a plurality of output lines connected to the inverter to receive the three phase AC inverter output. The system can include a control module configured to control the output of the inverter. The control module can be operatively connected to one or more of the output lines via one or more local sense leads to receive a local feedback. The control module can be configured to control the inverter as a function of the local feedback to provide one or more of protection and/or voltage regulation. The control module can be connected to one or more point of reference (POR) leads configured to be connected to a POR on a plurality of load input lines of a load to provide POR feedback to the control module. The control module can be configured to control the inverter to provide harmonic correction as a function of the POR feedback.

公开(公告)号：US11502617B2

公开(公告)日：2022-11-15

申请号：US16271330

申请日：2019-02-08

Applicant: Hamilton Sundstrand Corporation

Inventor： Randall Bax ,  Dwight D. Schmitt

IPC: H02M5/458

Abstract: A generator system can include a generator configured to produce an output of alternating current (AC), a rectifier connected to the generator to rectify the AC into direct current (DC) rectifier output, an inverter connected to the rectifier to receive the DC rectifier output and configured to output three phase AC inverter output, and a plurality of output lines connected to the inverter to receive the three phase AC inverter output. The system can include a control module configured to control the output of the inverter. The control module can be operatively connected to one or more of the output lines via one or more local sense leads to receive a local feedback. The control module can be configured to control the inverter as a function of the local feedback to provide one or more of protection, voltage regulation, or harmonic correction.

公开(公告)号：US10523130B2

公开(公告)日：2019-12-31

申请号：US15876984

申请日：2018-01-22

Applicant: Hamilton Sundstrand Corporation

Inventor： Randall Bax ,  Huazhen Chai ,  Frank Z. Feng ,  Ryan W. Schmid

IPC: H02M7/483 ,  H02M7/48 ,  H02M1/12 ,  H02M1/00 ,  H02M7/5387 ,  H02P6/18

Abstract: A method of and system for controlling a DC midpoint of a multi-level inverter. The method includes receiving an input power signal from an AC power source at a multi-level motor control system that includes a DC bus and a multi-level inverter configured to supply a load, the DC bus having a DC midpoint, connecting a DC midpoint of a DC bus to a neutral point of the AC power source, while isolating a neutral point of a load supplied by the multi-level inverter from the DC midpoint, monitoring a voltage on the DC midpoint of the DC bus. In addition, the method may include controlling a voltage of the neutral point of the AC load based on imbalances in the load supplied by the multi-level inverter.

公开(公告)号：US20170227590A1

公开(公告)日：2017-08-10

申请号：US15016338

申请日：2016-02-05

Applicant: Hamilton Sundstrand Corporation

Inventor： Waleed M. Said ,  Randall Bax

IPC: G01R31/02 ,  G06F17/50 ,  G01R31/34

CPC classification number: G01R31/02 ,  G01R31/2812 ,  G01R31/34 ,  G05B23/0243 ,  G06F17/5036 ,  H02H3/023 ,  H02H3/083 ,  H02H3/10 ,  H02H7/0833 ,  H02H7/1203 ,  H02P29/0241

Abstract: A motor controller circuit includes an electrical powertrain having a three phase input, a DC link and a three phase output, a controller including a processor and a memory, a first current sensor configured to sense a current at the three phase input, a second current sensor configured to sense a current at the three phase output, and a third sensor configured to sense a current at the DC link, and wherein the memory stores instructions configured to cause the processor to compare an operational model of the powertrain against a mathematical model of the powertrain and to detect a high impedance fault when a deviation between the operational model and the mathematical model exceeds a threshold.

公开(公告)号：US10833502B2

公开(公告)日：2020-11-10

申请号：US15875906

申请日：2018-01-19

Applicant: HAMILTON SUNDSTRAND CORPORATION

Inventor： Frank Z. Feng ,  Randall Bax ,  Ryan W. Schmid ,  Huazhen (Harry) Chai

IPC: H02H9/02 ,  H03K17/567 ,  H02H1/04 ,  H02H9/00

Abstract: A system for controlling inrush current between a power source and a load includes an output capacitor coupled in parallel with the load, and a transistor having a gate, a collector configured to be coupled to the power source, and an emitter configured to be coupled to the load. The system also includes a supply resistor configured to be electrically coupled between the power source and the load and to provide a resistor charging current from the power source to the output capacitor to charge the output capacitor in response to initial power being provided by the power source. The system also includes a gate resistor having a first terminal coupled to the gate of the transistor to cause the transistor to operate in a linear mode in response to the initial power being provided by the power source to increase a speed of charging the output capacitor.

公开(公告)号：US20200259422A1

公开(公告)日：2020-08-13

申请号：US16271330

申请日：2019-02-08

Applicant: Hamilton Sundstrand Corporation

Inventor： Randall Bax ,  Dwight D. Schmitt

IPC: H02M5/458

Abstract: A generator system can include a generator configured to produce an output of alternating current (AC), a rectifier connected to the generator to rectify the AC into direct current (DC) rectifier output, an inverter connected to the rectifier to receive the DC rectifier output and configured to output three phase AC inverter output, and a plurality of output lines connected to the inverter to receive the three phase AC inverter output. The system can include a control module configured to control the output of the inverter. The control module can be operatively connected to one or more of the output lines via one or more local sense leads to receive a local feedback. The control module can be configured to control the inverter as a function of the local feedback to provide one or more of protection, voltage regulation, or harmonic correction.

公开(公告)号：US20190229643A1

公开(公告)日：2019-07-25

申请号：US15876984

申请日：2018-01-22

Applicant: Hamilton Sundstrand Corporation

Inventor： Randall Bax ,  Huazhen Chai ,  Frank Z. Feng ,  Ryan W. Schmid

IPC: H02M7/48 ,  H02M1/12 ,  H02M1/00 ,  H02P6/18 ,  H02M7/5387

Abstract: A method of and system for controlling a DC midpoint of a multi-level inverter. The method includes receiving an input power signal from an AC power source at a multi-level motor control system that includes a DC bus and a multi-level inverter configured to supply a load, the DC bus having a DC midpoint, connecting a DC midpoint of a DC bus to a neutral point of the AC power source, while isolating a neutral point of a load supplied by the multi-level inverter from the DC midpoint, monitoring a voltage on the DC midpoint of the DC bus. In addition, the method may include controlling a voltage of the neutral point of the AC load based on imbalances in the load supplied by the multi-level inverter.

公开(公告)号：US20190229527A1

公开(公告)日：2019-07-25

申请号：US15875906

申请日：2018-01-19

Applicant: HAMILTON SUNDSTRAND CORPORATION

Inventor： Frank Z. Feng ,  Randall Bax ,  Ryan W. Schmid ,  Huazhen (Harry) Chai

IPC: H02H9/02 ,  H03K17/567

Abstract: A system for controlling inrush current between a power source and a load includes an output capacitor coupled in parallel with the load, and a transistor having a gate, a collector configured to be coupled to the power source, and an emitter configured to be coupled to the load. The system also includes a supply resistor configured to be electrically coupled between the power source and the load and to provide a resistor charging current from the power source to the output capacitor to charge the output capacitor in response to initial power being provided by the power source. The system also includes a gate resistor having a first terminal coupled to the gate of the transistor to cause the transistor to operate in a linear mode in response to the initial power being provided by the power source to increase a speed of charging the output capacitor.

公开(公告)号：US20190229524A1

公开(公告)日：2019-07-25

申请号：US15875839

申请日：2018-01-19

Applicant: HAMILTON SUNDSTRAND CORPORATION

Inventor： Frank Z. Feng ,  Randall Bax ,  Ryan W. Schmid ,  Huazhen (Harry) Chai

IPC: H02H9/00 ,  H02H1/00

Abstract: A system for controlling inrush current between a power source and a load includes an output capacitor configured to be coupled in parallel with the load. The system also includes a transistor having a gate, a collector configured to be coupled to the power source, and an emitter configured to be coupled to the load. The system also includes a collector resistor coupled between the collector of the transistor and the gate of the transistor. The system also includes an emitter capacitor coupled between the gate of the transistor and the emitter of the transistor to facilitate current flow from the power source through the collector resistor and the emitter capacitor to charge the output capacitor.