公开(公告)号：US08680777B2

公开(公告)日：2014-03-25

申请号：US13431521

申请日：2012-03-27

Applicant: Ken Tran ,  Xing Chen ,  Russell L. Newman ,  Franklin Lee

Inventor： Ken Tran ,  Xing Chen ,  Russell L. Newman ,  Franklin Lee

IPC: H05B41/16 ,  H05B41/24

CPC classification number: H05B33/0803 ,  Y02B20/348

Abstract: A power system for a dielectric barrier discharge system, such as used for generating ozone, can include a full bridge inverter stage and parallel resonant tank outputting a signal for powering a dielectric barrier discharge cell stack. The inverter stage is controlled using a combination of pulse width modulation (PWM) and frequency modulation (FM) to enable soft switching through all load conditions—from full load to light load. A current control loop error amplifier compensator can provide a duty cycle adjustment signal to a phase shift PWM controller chip that generates the switching signals for the inverter stage. A feedback signal is also used to adjust a clock frequency time constant of the PWM controller chip to provide the FM. In one embodiment, the feedback signal is an output of an inverting amplifier connected at an output of the current control loop error amplifier compensator.

Abstract translation: 用于产生臭氧的电介质阻挡放电系统的电力系统可以包括全桥逆变器级和并联谐振回路，输出用于为介质阻挡放电单元堆供电的信号。 使用脉冲宽度调制（PWM）和调频（FM）的组合来控制逆变器级，以实现从全负载到轻负载的所有负载条件下的软开关。 电流控制回路误差放大器补偿器可以向产生用于逆变器级的开关信号的相移PWM控制器芯片提供占空比调整信号。 反馈信号也用于调整PWM控制器芯片的时钟频率时间常数以提供FM。 在一个实施例中，反馈信号是在电流控制回路误差放大器补偿器的输出处连接的反相放大器的输出。

公开(公告)号：US20130257311A1

公开(公告)日：2013-10-03

申请号：US13431521

申请日：2012-03-27

Applicant: KEN TRAN ,  XING CHEN ,  RUSSELL L. NEWMAN ,  FRANKLIN LEE

Inventor： KEN TRAN ,  XING CHEN ,  RUSSELL L. NEWMAN ,  FRANKLIN LEE

IPC: H05B41/24

CPC classification number: H05B33/0803 ,  Y02B20/348

Abstract: A power system for a dielectric barrier discharge system, such as used for generating ozone, can include a full bridge inverter stage and parallel resonant tank outputting a signal for powering a dielectric barrier discharge cell stack. The inverter stage is controlled using a combination of pulse width modulation (PWM) and frequency modulation (FM) to enable soft switching through all load conditions—from full load to light load. A current control loop error amplifier compensator can provide a duty cycle adjustment signal to a phase shift PWM controller chip that generates the switching signals for the inverter stage. A feedback signal is also used to adjust a clock frequency time constant of the PWM controller chip to provide the FM. In one embodiment, the feedback signal is an output of an inverting amplifier connected at an output of the current control loop error amplifier compensator.

Abstract translation: 用于产生臭氧的电介质阻挡放电系统的电力系统可以包括全桥逆变器级和并联谐振回路，输出用于为介质阻挡放电单元堆供电的信号。 使用脉冲宽度调制（PWM）和调频（FM）的组合来控制逆变器级，以实现从全负载到轻负载的所有负载条件下的软开关。 电流控制回路误差放大器补偿器可以向产生用于逆变器级的开关信号的相移PWM控制器芯片提供占空比调整信号。 反馈信号也用于调整PWM控制器芯片的时钟频率时间常数以提供FM。 在一个实施例中，反馈信号是在电流控制回路误差放大器补偿器的输出处连接的反相放大器的输出。

公开(公告)号：US08520413B2

公开(公告)日：2013-08-27

申请号：US13211892

申请日：2011-08-17

Applicant: Ken Tran ,  Feng Tian ,  Franklin Lee ,  Wangbo Zhang

Inventor： Ken Tran ,  Feng Tian ,  Franklin Lee ,  Wangbo Zhang

IPC: H02M3/335

CPC classification number: H02M3/155 ,  H02M3/158 ,  H02M2001/0019 ,  H02M2001/0022 ,  Y02B70/1425

Abstract: A power converter includes first and second circuit modules, a first capacitor, a second diode and a control module. The first circuit module includes a switching element in parallel with a first diode. The second circuit module includes a first inductor and the first circuit module. The inductor is in series with the first circuit module. The first capacitor is in parallel with the second circuit module. The second diode includes a first terminal and a second terminal, where the first terminal is in series with the second circuit module and the first capacitor, and the second terminal is coupled to a second power terminal. The control module varies one or more of the first capacitor and the first inductor based on at least one of a current of a load circuit or an input voltage. A resonating waveform is generated by a resonant circuit of the second circuit and is used by the control module to turn off the switching element under zero-current and zero-voltage conditions.

Abstract translation: 功率转换器包括第一和第二电路模块，第一电容器，第二二极管和控制模块。 第一电路模块包括与第一二极管并联的开关元件。 第二电路模块包括第一电感器和第一电路模块。 电感器与第一个电路模块串联。 第一电容器与第二电路模块并联。 第二二极管包括第一端子和第二端子，其中第一端子与第二电路模块和第一电容器串联，并且第二端子耦合到第二电源端子。 控制模块基于负载电路的电流或输入电压中的至少一个来改变第一电容器和第一电感器中的一个或多个。 谐振波形由第二电路的谐振电路产生，并被控制模块用于在零电流和零电压条件下关断开关元件。

公开(公告)号：US20130043854A1

公开(公告)日：2013-02-21

申请号：US13211892

申请日：2011-08-17

Applicant: Ken Tran ,  Feng Tian ,  Franklin Lee ,  Wangbo Zhang

Inventor： Ken Tran ,  Feng Tian ,  Franklin Lee ,  Wangbo Zhang

IPC: G05F1/00

CPC classification number: H02M3/155 ,  H02M3/158 ,  H02M2001/0019 ,  H02M2001/0022 ,  Y02B70/1425

Abstract: A power converter includes first and second circuit modules, a first capacitor, a second diode and a control module. The first circuit module includes a switching element in parallel with a first diode. The second circuit module includes a first inductor and the first circuit module. The inductor is in series with the first circuit module. The first capacitor is in parallel with the second circuit module. The second diode includes a first terminal and a second terminal, where the first terminal is in series with the second circuit module and the first capacitor, and the second terminal is coupled to a second power terminal. The control module varies one or more of the first capacitor and the first inductor based on at least one of a current of a load circuit or an input voltage. A resonating waveform is generated by a resonant circuit of the second circuit and is used by the control module to turn off the switching element under zero-current and zero-voltage conditions.

Abstract translation: 功率转换器包括第一和第二电路模块，第一电容器，第二二极管和控制模块。 第一电路模块包括与第一二极管并联的开关元件。 第二电路模块包括第一电感器和第一电路模块。 电感器与第一个电路模块串联。 第一电容器与第二电路模块并联。 第二二极管包括第一端子和第二端子，其中第一端子与第二电路模块和第一电容器串联，并且第二端子耦合到第二电源端子。 控制模块基于负载电路的电流或输入电压中的至少一个来改变第一电容器和第一电感器中的一个或多个。 谐振波形由第二电路的谐振电路产生，并被控制模块用于在零电流和零电压条件下关断开关元件。

公开(公告)号：US20130022473A1

公开(公告)日：2013-01-24

申请号：US13189045

申请日：2011-07-22

Applicant: Ken Tran

Inventor： Ken Tran

IPC: F04D29/00

CPC classification number: F04D29/181 ,  F04D29/384

Abstract: An axial rotor includes a plurality of blades extending from a hub that is rotatable about an axis of rotation. Each of the plurality of blades includes a blade body that extends over a span from a base to a tip. The plurality of blades defines an exit flow angle relative to a plane that is perpendicular to the axis of rotation. The exit flow angle decreases along the span from the base to the tip.

Abstract translation: 轴向转子包括从轮毂延伸的多个叶片，轮毂可围绕旋转轴线旋转。 多个叶片中的每个叶片包括从基部到尖端在跨度上延伸的叶片体。 多个叶片相对于垂直于旋转轴线的平面限定出口流动角度。 出口流动角度沿着从底部到尖端的跨度减小。

公开(公告)号：US20120287545A1

公开(公告)日：2012-11-15

申请号：US13106920

申请日：2011-05-13

Applicant: Ken Tran ,  Feng Tian ,  Xing Chen

Inventor： Ken Tran ,  Feng Tian ,  Xing Chen

IPC: H02H3/08

CPC classification number: H03K17/0822 ,  H02M1/38 ,  H02M3/337 ,  H03K2217/0036

Abstract: A switching apparatus includes a first transistor, a second transistor, a first circuit module, a first current sensor and a control circuit. The first transistor includes first, second and third terminals. The first terminal of the first transistor is coupled to a first power terminal. The third terminal of the first transistor includes a gate or base of the first transistor. The second transistor includes first, second and third terminals. The first terminal of the second transistor is coupled to a second power terminal. The second terminal of the second transistor is coupled to the second terminal of the first transistor. The third terminal of the second transistor includes a gate or base of the second transistor. The first circuit module includes an inductor in parallel with a diode. The first circuit module is connected between the first terminal of the second transistor and the second power terminal.

Abstract translation: 开关装置包括第一晶体管，第二晶体管，第一电路模块，第一电流传感器和控制电路。 第一晶体管包括第一，第二和第三端子。 第一晶体管的第一端子耦合到第一电源端子。 第一晶体管的第三端子包括第一晶体管的栅极或基极。 第二晶体管包括第一，第二和第三端子。 第二晶体管的第一端耦合到第二电源端子。 第二晶体管的第二端子耦合到第一晶体管的第二端子。 第二晶体管的第三端子包括第二晶体管的栅极或基极。 第一电路模块包括与二极管并联的电感器。 第一电路模块连接在第二晶体管的第一端和第二电源端之间。

公开(公告)号：US20100219757A1

公开(公告)日：2010-09-02

申请号：US12394904

申请日：2009-02-27

Applicant: Souheil Benzerrouk ,  Siddharth P. Nagarkatti ,  Andrew Cowe ,  Ali Shajii ,  Jesse E. Ambrosina ,  Ken Tran ,  Xing Chen

Inventor： Souheil Benzerrouk ,  Siddharth P. Nagarkatti ,  Andrew Cowe ,  Ali Shajii ,  Jesse E. Ambrosina ,  Ken Tran ,  Xing Chen

IPC: H05H1/24

CPC classification number: H01J37/32009 ,  H01J37/321

Abstract: Described are methods and apparatuses, including computer program products, for igniting and/or sustaining a plasma in a reactive gas generator. Power is provided from an ignition power supply to a plasma ignition circuit. A pre-ignition signal of the plasma ignition circuit is measured. The power provided to the plasma ignition circuit is adjusted based on the measured pre-ignition signal and an adjustable pre-ignition control signal. The adjustable pre-ignition control signal is adjusted after a period of time has elapsed.

Abstract translation: 描述了用于在反应性气体发生器中点燃和/或维持等离子体的方法和装置，包括计算机程序产品。 从点火电源向等离子体点火电路供电。 测量等离子体点火电路的预点火信号。 基于所测量的预先点火信号和可调节的预点火控制信号来调节提供给等离子体点火电路的功率。 经过一段时间后，调节可调节点火控制信号。

公开(公告)号：US07353771B2

公开(公告)日：2008-04-08

申请号：US11268692

申请日：2005-11-07

Applicant: Alan Millner ,  Thomas Alexander ,  Ilya Bystryak ,  Ken Tran ,  Madhuwanti Joshi

Inventor： Alan Millner ,  Thomas Alexander ,  Ilya Bystryak ,  Ken Tran ,  Madhuwanti Joshi

IPC: C23C16/00

CPC classification number: H01J37/32174 ,  H01J37/321 ,  H01J37/32137 ,  H05H1/46

Abstract: According to a first aspect, a power supply and a method of providing power for igniting a plasma in a reactive gas generator is provided that includes (i) coupling a series resonant circuit that comprises a resonant inductor and a resonant capacitor between a switching power source and a transformer, the transformer having a transformer primary and a plasma secondary; (ii) providing a substantially resonant AC voltage from the resonant capacitor across the transformer primary, thereby inducing a substantially resonant current within the transformer primary to generate the plasma secondary; and (iii) upon generation of the plasma secondary, the resonant inductor limiting current flowing to the switching power supply. According to another aspect, bipolar high voltage ignition electrodes can be used in conjunction with inductive energy coupling to aid in plasma ignition.

Abstract translation: 根据第一方面，提供了一种电源和提供用于点燃无功气体发生器中的等离子体的功率的方法，其包括（i）将包括谐振电感器的串联谐振电路和谐振电容器耦合在开关电源 和变压器，变压器具有变压器初级和等离子体次级; （ii）从变压器初级侧的谐振电容器提供基本上谐振的AC电压，从而在变压器初级线路内引起基本上谐振的电流以产生等离子体次级; 和（iii）在产生等离子体次级时，谐振电感器限制流向开关电源的电流。 根据另一方面，双极性高压点火电极可以与感应能耦合一起使用以辅助等离子体点火。

公开(公告)号：US20070108040A1

公开(公告)日：2007-05-17

申请号：US11503662

申请日：2006-08-14

Applicant: Igor Elkin ,  Alan Millner ,  Ken Tran ,  Madhuwanti Joshi

Inventor： Igor Elkin ,  Alan Millner ,  Ken Tran ,  Madhuwanti Joshi

IPC: C01B13/10 ,  B01J19/08

CPC classification number: B01J19/087 ,  C01B13/115 ,  H02M5/4585 ,  H02M7/537 ,  Y02B70/1441 ,  Y02B70/145 ,  Y02P20/121

Abstract: A transformer-less power supply is provided for ozone generation. The power supply advantageously reduces costs and increases reliability of ozone generators. The power supply provides a first AC voltage from a power source to a resonant circuit and the resonant circuit provides a second AC voltage to the ozone generating unit, the second AC voltage being greater than the first AC voltage. A controller for the power supply that adapts to the resonance of the circuit to provide control with a wide tolerance for the high Q circuit component values of the circuit.

Abstract translation: 为产生臭氧提供无变压器电源。 电源有利地降低了成本并提高了臭氧发生器的可靠性。 电源提供从电源到谐振电路的第一AC电压，并且谐振电路向臭氧发生单元提供第二AC电压，第二AC电压大于第一AC电压。 用于电源的控制器，其适应于电路的谐振，以提供对电路的高Q电路元件值的宽容差的控制。

公开(公告)号：US20070103092A1

公开(公告)日：2007-05-10

申请号：US11268692

申请日：2005-11-07

Applicant: Alan Millner ,  Thomas Alexander ,  Ilya Bystryak ,  Ken Tran ,  Madhuwanti Joshi

Inventor： Alan Millner ,  Thomas Alexander ,  Ilya Bystryak ,  Ken Tran ,  Madhuwanti Joshi

IPC: H05B41/16

CPC classification number: H01J37/32174 ,  H01J37/321 ,  H01J37/32137 ,  H05H1/46

Abstract: According to a first aspect, a power supply and a method of providing power for igniting a plasma in a reactive gas generator is provided that includes (i) coupling a series resonant circuit that comprises a resonant inductor and a resonant capacitor between a switching power source and a transformer, the transformer having a transformer primary and a plasma secondary; (ii) providing a substantially resonant AC voltage from the resonant capacitor across the transformer primary, thereby inducing a substantially resonant current within the transformer primary to generate the plasma secondary; and (iii) upon generation of the plasma secondary, the resonant inductor limiting current flowing to the switching power supply. According to another aspect, bipolar high voltage ignition electrodes can be used in conjunction with inductive energy coupling to aid in plasma ignition.

Abstract translation: 根据第一方面，提供了一种电源和提供用于点燃无功气体发生器中的等离子体的功率的方法，其包括（i）将包括谐振电感器的串联谐振电路和谐振电容器耦合在开关电源 和变压器，变压器具有变压器初级和等离子体次级; （ii）从变压器初级侧的谐振电容器提供基本上谐振的AC电压，从而在变压器初级线路内引起基本上谐振的电流以产生等离子体次级; 和（iii）在产生等离子体次级时，谐振电感器限制流向开关电源的电流。 根据另一方面，双极性高压点火电极可以与感应能耦合一起使用以辅助等离子体点火。