公开(公告)号：US08929111B2

公开(公告)日：2015-01-06

申请号：US13656880

申请日：2012-10-22

Applicant: Hamilton Sundstrand Corporation

Inventor： Adam Michael White

IPC: H02M7/515

CPC classification number: H02M7/487 ,  H02M2007/53876

Abstract: A multi-level converter includes a plurality of alternating current (AC) terminals connected to an AC source or load, at least three direct current (DC) terminals connected to a multi-level DC source or load, and a plurality of solid-state switches that are selectively turned On and Off to connect each of the plurality of AC terminals to one of the DC terminals. A controller provides PWM control signals to the solid-state switches. The controller utilizes space vector modulation to organize the various switching state configurations, and increments the switching states during a first half of the switching period and decrements the switching states during a second half of the switching period to center-align the PWM signals provided about the center of the switching period. The switching states utilized during the switching period dictate the PWM control signals provided to the plurality of switches employed in the three-level converter.

Abstract translation: 多电平转换器包括连接到AC电源或负载的多个交流（AC）端子，连接到多电平DC电源或负载的至少三个直流（DC）端子和多个固态 选择性地打开和关闭的开关将多个AC端子中的每一个连接到DC端子中的一个。 控制器向固态开关提供PWM控制信号。 控制器利用空间矢量调制来组织各种开关状态配置，并且在开关周期的前半部分期间增加开关状态，并且在开关周期的后半段期间递减开关状态，使得围绕 中心的切换期。 在开关周期期间使用的开关状态决定了提供给三电平转换器中使用的多个开关的PWM控制信号。

公开(公告)号：US20200251981A1

公开(公告)日：2020-08-06

申请号：US16268225

申请日：2019-02-05

Applicant: Hamilton Sundstrand Corporation

Inventor： Ernest Thompson ,  Adam Michael White ,  Dwight D. Schmitt

IPC: H02M1/32 ,  H02M7/5395 ,  H02M1/088

Abstract: A converter implementing a dual-reference three-level pulse width modulation (PWM) technique for constraining a midpoint duty cycle is provided. The converter includes a phase leg that includes upper, mid-upper, mid-lower, and lower switches. The upper, mid-upper, mid-lower, and lower switches are connected in series between direct current (DC) positive and negative leads, with an alternating current (AC) output lead connected at a junction of the mid-upper and mid-lower switches. The phase leg includes a first clamping diode connected to the junction of the switch and mid-upper switches and connected to a DC midpoint lead and a second clamping diode connected between the DC midpoint lead and connected to the junction of the mid-lower and lower switches. The converter is electrically coupled to and operatively associated with a controller to receive control signals to drive the converter to constrain the midpoint duty cycle between the DC midpoint and AC output leads.

公开(公告)号：US20180054150A1

公开(公告)日：2018-02-22

申请号：US15243010

申请日：2016-08-22

Applicant: Hamilton Sundstrand Corporation

Inventor： Dwight D. Schmitt ,  Curtis J. Plude ,  Adam Michael White ,  John Duward Sagona

IPC: H02P27/06

CPC classification number: H02P27/06 ,  H02M7/483 ,  H02M7/487 ,  H02P27/14

Abstract: A system and method for controlling a DC midpoint terminal voltage of a three level inverter is provided. The method includes receiving an input power signal at a three level motor controller system that includes a three level inverter, measuring, using a current sensor in the three level motor controller system, a DC current of the input power signal before the input power signal is provided to the three level inverter, and adjusting a zero-sequence inverter output voltage to adjust a midpoint voltage at the DC midpoint based on the measured DC current.

公开(公告)号：US20140268948A1

公开(公告)日：2014-09-18

申请号：US13836241

申请日：2013-03-15

Applicant: HAMILTON SUNDSTRAND CORPORATION

Inventor： Adam Michael White ,  Mustansir Kheraluwala ,  Steven A. Davidson

IPC: H02M7/493 ,  H03K7/08

CPC classification number: H02M7/493 ,  H02M3/1584 ,  H03K7/08

Abstract: A power converter system includes an interleaved power converter having a plurality of parallel-connected phase legs between DC terminals and an AC terminal. A plurality of parallel-connected inductors are each connected to one of the plurality of parallel-connected phase legs to provide a summed output of the parallel-connected phase legs to the AC terminal. A controller generates PWM signals used to control the state of each of the plurality of phase legs by comparing a carrier signal to a reference signal, wherein a period of the carrier signal is randomly varied from a nominal period.

Abstract translation: 功率转换器系统包括具有在DC端子和AC端子之间的多个并联连接的相位支路的交错功率转换器。 多个并联电感器各自连接到多个并联连接的相位支路中的一个，以提供并联连接的相支路到AC端子的相加输出。 控制器通过将载波信号与参考信号进行比较来产生用于控制多个相位分支中的每一个的状态的PWM信号，其中载波信号的周期从标称周期随机变化。

公开(公告)号：US11588396B2

公开(公告)日：2023-02-21

申请号：US16791593

申请日：2020-02-14

Applicant: Hamilton Sundstrand Corporation

Inventor： Adam Michael White ,  Dwight D. Schmitt

IPC: H02M1/32 ,  H02M5/04 ,  H02M1/00

Abstract: A method of operating a power conversion system including converting variable frequency AC voltage to constant frequency AC voltage by a power converter, setting a first peak current reset threshold above operating currents previously observed during steady state short circuit current regulation in by a controller of the power converter, setting a second peak current reset threshold at a current lower than the previously observed steady state short-circuit regulation point observed during previous operation during steady state short circuit current regulation by the controllers of the power converter, resetting inverter converter AC output regulating voltage to 0 volts, and ramping AC output regulating voltage back up into steady-state operation when the second a peak current reset threshold is exceeded.

公开(公告)号：US20150280595A1

公开(公告)日：2015-10-01

申请号：US14231802

申请日：2014-04-01

Applicant: Hamilton Sundstrand Corporation

Inventor： Adam Michael White

IPC: H02M5/293 ,  H02P1/30 ,  H02P23/00

CPC classification number: H02P1/30 ,  H02M1/32 ,  H02M5/297 ,  H02M2001/325 ,  H02P23/18 ,  H02P2207/01

Abstract: A power conversion system includes a power source, a matrix converter, and a controller. The power source is configured to produce an input power. The matrix converter is configured to convert the input power to output power and includes a plurality of normally-on switches and a plurality of normally-off switches. The controller is configured to control the plurality of normally-on switches and the plurality of normally-off switches to control the output power. The plurality of normally-on switches provide the input power directly as the output power when the controller is inactive.

Abstract translation: 电力转换系统包括电源，矩阵转换器和控制器。 电源被配置为产生输入功率。 矩阵转换器被配置为将输入功率转换为输出功率，并且包括多个常开开关和多个正常关闭开关。 控制器被配置为控制多个常开开关和多个常开开关以控制输出功率。 当控制器不活动时，多个常开开关将输入功率直接提供为输出功率。

公开(公告)号：US20140268967A1

公开(公告)日：2014-09-18

申请号：US13836662

申请日：2013-03-15

Applicant: HAMILTON SUNDSTRAND CORPORATION

Inventor： Adam Michael White ,  Mustansir Kheraluwala ,  Steven A. Davidson

IPC: H02M7/538

CPC classification number: H02M1/44 ,  H02M7/487 ,  H02M7/501 ,  H02M7/538

Abstract: A multi-level power converter system includes a multi-level power converter configured to synthesize at least three direct current (DC) voltages into an alternating current (AC) output voltage, and includes a plurality of transistors. A controller generates pulse-width modulation (PWM) signals used to control a state of the plurality of transistors of the multi-level converter by comparing first and second carrier signals to a reference signals, wherein a period of the first and second carrier signals is randomly varied from a nominal period.

Abstract translation: 多级功率转换器系统包括被配置为将至少三个直流（DC）电压合成为交流（AC）输出电压的多电平功率转换器，并且包括多个晶体管。 控制器通过将第一和第二载波信号与参考信号进行比较来产生用于控制多电平转换器的多个晶体管的状态的脉冲宽度调制（PWM）信号，其中第一和第二载波信号的周期是 从名义期间随机变化。