-
公开(公告)号：US20090167255A1
公开(公告)日：2009-07-02
申请号：US11964122
申请日：2007-12-26
申请人： Gregory I. Rozman , Kevin A. Dooley
发明人： Gregory I. Rozman , Kevin A. Dooley
摘要： Methods and systems are disclosed for reducing alternating current ripples in direct current electrical power generation systems with one or more regulated permanent magnet machines. Ripple suppression is achieved, in one aspect, by modulating the control current of a regulated permanent magnet machine.
摘要翻译： 公开了用于减少具有一个或多个调节永久磁铁机器的直流发电系统中的交流电波纹的方法和系统。 在一个方面，通过调节调节永磁电机的控制电流，实现纹波抑制。
-
公开(公告)号：US20090167225A1
公开(公告)日：2009-07-02
申请号：US11964123
申请日：2007-12-26
申请人： Kevin A. Dooley , Gregory I. Rozman
发明人： Kevin A. Dooley , Gregory I. Rozman
IPC分类号： H02P6/14
CPC分类号： H02P25/024 , H02M2001/007 , H02M2001/344
摘要： A method and apparatus is disclosed for controlling a system comprising at least one electric motor. The motor drive circuit includes a reconfigurable active snubber. Under given resonance conditions, the active snubber is configured to use a resistive element to dissipate electrical transients across the commutation circuit.
摘要翻译： 公开了一种用于控制包括至少一个电动机的系统的方法和装置。 电动机驱动电路包括可重构主动缓冲器。 在给定的谐振条件下，有源缓冲器被配置为使用电阻元件来消耗整流电路上的电瞬变。
-
63.发明申请GENERATOR FOR GAS TURBINE ENGINE HAVING DC BUS FAULT SHORT CIRCUIT CONTROL USING A BATTERY 有权使用电池进行直流母线故障短路控制的气体发动机发电机公开(公告)号：US20090045293A1
公开(公告)日：2009-02-19
申请号：US11839823
申请日：2007-08-16
IPC分类号： B64D31/00
CPC分类号： B64D33/00 , B64D2221/00 , H02J9/06
摘要： An aircraft electrical system comprises a generator to be driven as part of a gas turbine engine. The generator supplies electrical power to a plurality of accessories associated with the gas turbine engine, and to an aircraft DC bus in parallel to the supply to the accessories. A battery supplies voltage to a control circuit for the generator through a selectively opened and closed switch. A control detects a short circuit on the aircraft DC bus. The battery switch allows power from the battery to flow to provide control voltage for the generator when the control detects a short circuit on the aircraft DC bus.
摘要翻译： 飞机电气系统包括作为燃气涡轮发动机的一部分驱动的发电机。 发电机对与燃气涡轮发动机相关联的多个附件以及平行于附件供应的飞机DC总线供电。 电池通过选择性地打开和关闭的开关向发电机的控制电路提供电压。 控制器检测飞机直流总线上的短路。 当控制器检测到飞机直流总线上的短路时，电池开关允许来自电池的电力流动以提供发电机的控制电压。
-
公开(公告)号：US20090009146A1
公开(公告)日：2009-01-08
申请号：US11825583
申请日：2007-07-06
申请人： Gregory I. Rozman , Kevin Dooley
发明人： Gregory I. Rozman , Kevin Dooley
CPC分类号： H02P9/10 , H02P29/027
摘要： An electromechanical power transfer system that transfers power between a prime mover and a direct current (DC) electrical power system, comprises: a permanent magnet machine (PMM) that has a permanent magnet (PM) rotor coupled to the prime mover, a stator with a multiphase alternating current (AC) winding coupled to an AC bus and a control coil with a winding that has a configuration to generate a magnetic field with flux that varies the reactance of the stator winding with the application of control coil current; a position sensing system for generating a rotor position signal that is representative of the angular position of the PM rotor; a control coil current sensor for generating a control coil current signal that is representative of the level of electrical current in the control coil; an electrical potential sensor for generating a DC bus potential signal that is representative of the level of DC potential on the DC bus; an electrical current sensor for generating a DC bus current signal that is representative of the level of DC current that the active rectifier supplies to the electrical load by way of the DC bus; an output power estimator that compares the DC bus potential signal with the DC bus current signal to generate an output power signal; a differentiator that receives the output power signal to generate a respective rate of output power signal; a summer that adds the rate of output power signal with the DC bus potential signal to generate a DC potential feedback signal; and a selectable main active/passive rectifier system for converting multiphase AC power developed by the stator to DC power supplied to the electrical load by way of a DC bus; a control coil current regulator system to regulate the control coil current; wherein the control coil current regulator system generates a level of the control coil current that regulates current in the stator to a desired level in response to a control coil current feedback loop that comprises the control coil current signal and a DC bus potential feedback loop that comprises the DC potential feedback signal and in a generating mode the main active rectifier system maintains a constant potential on the DC bus regardless of sudden changes in electrical load on the DC bus in response to the DC bus potential feedback loop and the rotor position feedback loop; and wherein both the control coil current regulator system and the main active rectifier system switch from an active regulating mode to a protection non-regulating mode upon detection of a fault in the DC bus.
-
公开(公告)号：US20080315584A1
公开(公告)日：2008-12-25
申请号：US11820639
申请日：2007-06-20
CPC分类号： H02P9/305 , H02P1/46 , H02P9/48 , H02P27/05 , H02P2207/076
摘要： An electromechanical power transfer system that transfers power between a direct current (DC) electrical power system and a prime mover, comprises: a permanent magnet machine (PMM) comprising a permanent magnet (PM) rotor that rotates a drive shaft of the prime mover, a stator with a multiphase alternating current (AC) winding coupled to the AC bus for developing a rotating magnetic field with a magnetic flux path that causes rotation of the PM rotor and a control coil with a winding that has a configuration to generate a magnetic field with flux that varies the reactance of the stator winding upon the application of current through the control coil; a plurality of AC current sensors for sensing the current in each phase of the multi-phase AC bus and generating respective AC bus current signals that represent the current level of each phase; an average current detector that receives the AC bus current signals and generates a respective current load feedback signal; a back electromotive force (emf) detector coupled to the AC bus that detects back emf generated by the stator in response to the application of AC power to the stator and generates a back emf signal representative of the detected level of back emf; a rotor position/speed estimator that receives the back emf signal and generates an estimated rotor position signal that is representative of the position of the rotor, an estimated rotor speed signal that is representative of the speed of the rotor and a closed loop enable signal that indicates a speed for the electrical starting system to switch from an open loop mode of operation to a closed loop mode of operation; a control coil current sensor for generating a control coil current signal in a control coil current feedback loop that is representative of the level of electrical current in the control coil; a first speed switch that switches between an open loop position reference signal that represents a desired position of the rotor in an open loop mode and the estimated rotor position signal that represents the position of the rotor in a closed loop mode to provide a position reference signal; a second speed switch that switches between an open loop current reference signal that represents a desired control coil current level in the open loop mode and a closed loop current reference signal that represents a desired control coil current level in the closed loop mode to provide a control coil current reference signal; an inverter/rectifier system for converting DC power from the DC power system to multiphase alternating current (AC) power on an AC bus; a control coil current regulator system for regulating current through the control coil; wherein the inverter/rectifier system responds to the position reference signal, the current load feedback signal and a current load reference signal to regulate acceleration of the PMM; wherein the control coil current regulator system responds to the control coil current reference signal and the control coil current feedback signal to regulate current in the PMM; and wherein the power transfer system starts in the open loop mode, the rotor position/speed estimator generates the closed loop enable signal that indicates a speed for the electrical starting system to switch from the open loop mode of operation to the closed loop mode of operation at a predetermined rotor speed, and the first and second speed switches respond to the closed loop enable mode to switch from their open loop mode to their closed loop mode.
-
公开(公告)号：US20070268004A1
公开(公告)日：2007-11-22
申请号：US11439480
申请日：2006-05-22
申请人： Gregory I. Rozman , Mahesh J. Shah , Alan E. King
发明人： Gregory I. Rozman , Mahesh J. Shah , Alan E. King
CPC分类号： H02J7/1438 , H02M3/1582 , H02P9/307
摘要： A power generating system provides high voltage AC power and low voltage DC power using a single generator. The generator includes a rotor and a stator that is wound with a first winding and a second winding. The first winding has a greater number of turns than the second winding and generates high voltage AC power in response to the rotating magnetic field created by the rotor. The second winding generates low voltage AC power in response to the rotating magnetic field created by the rotor. The low voltage AC power is converted to low voltage DC power by a rectifier. The low voltage DC power is further controlled by a DC-DC converter to generate controlled DC power. A controller monitors the DC power generated by the DC-DC converter, and generates pulse width modulation signals that are provided to the DC-DC converter, selectively increasing or decreasing the controlled DC power provided by the DC-DC converter.
摘要翻译： 发电系统使用单个发电机提供高压交流电源和低压直流电源。 该发电机包括一个转子和一个用第一绕组和第二绕组缠绕的定子。 第一绕组具有比第二绕组更大的匝数，并且响应于由转子产生的旋转磁场而产生高压AC电力。 第二绕组响应于由转子产生的旋转磁场产生低压AC电力。 低压交流电源由整流器转换成低压直流电源。 低压直流电源由DC-DC转换器进一步控制，以产生受控的直流电源。 控制器监视由DC-DC转换器产生的DC电力，并产生提供给DC-DC转换器的脉冲宽度调制信号，选择性地增加或减少由DC-DC转换器提供的受控直流电力。
-
公开(公告)号：US07140240B2
公开(公告)日：2006-11-28
申请号：US10872625
申请日：2004-06-21
IPC分类号： G01M15/00
CPC分类号： F01D25/36 , F01D25/285 , F02C7/275 , F02C9/00 , F05D2260/80 , F05D2260/85
摘要： A turbine engine inspection arrangement utilizes a motor that is otherwise utilized for starting the engine. An inspection interface allows for communicating with a motor controller to operate the motor in an inspection mode. During inspection, the motor moves the components of the engine very slowly or in an incremental fashion to facilitate visual inspection of the engine components, such as the turbine blades.
摘要翻译： 涡轮发动机检查装置使用另外用于起动发动机的电动机。 检查接口允许与电机控制器进行通信，以在检查模式下操作电机。 在检查期间，电动机非常慢地或以渐进的方式移动发动机的部件，以便于诸如涡轮机叶片之类的发动机部件的目视检查。
-
公开(公告)号：US07099165B1
公开(公告)日：2006-08-29
申请号：US11104021
申请日：2005-04-12
申请人： Gregory I. Rozman
发明人： Gregory I. Rozman
IPC分类号： H02M1/12
CPC分类号： H02M7/53871 , H02M1/12
摘要： An active filtration or harmonic scrubber system for power systems that convert AC power on an AC bus to DC power that cancels or reduces harmonic current injected by nonlinear loads onto the AC bus using high-bandwidth pulse width modulation (PWM) inverters.
摘要翻译： 用于将交流总线上的交流电转换为直流电的电力系统的主动过滤或谐波洗涤器系统，其使用高带宽脉宽调制（PWM）逆变器消除或减少由非线性负载注入到AC总线上的谐波电流。
-
公开(公告)号：US6084786A
公开(公告)日：2000-07-04
申请号：US239600
申请日：1999-01-29
申请人： Gregory I. Rozman
发明人： Gregory I. Rozman
CPC分类号： H02M1/4216 , H02M1/12 , Y02B70/126
摘要： An AC to DC converter is controlled so that its output DC is substantially ripple free and so that its input AC has substantially unity power factor. The AC to DC converter is controlled in response to the voltage and current of the input AC so that the power factor of the input AC is substantially unity. The AC to DC converter is also controlled in response to the output DC so that ripple in the output DC is suppressed. An error between the output DC and a DC reference may be integrated in a low gain path during substantially steady state conditions and in a high gain path during transient conditions so as to suppress ripple in the output DC.
摘要翻译： 控制AC到DC转换器，使得其输出DC基本上是无纹波的，并且使得其输入AC具有基本上一致的功率因数。 响应于输入AC的电压和电流来控制AC到DC转换器，使得输入AC的功率因数基本上是一致的。 交流 - 直流转换器也受到响应于输出DC的控制，从而抑制输出DC中的纹波。 输出DC和直流基准之间的误差可以在基本稳定状态条件下的低增益路径中集成，并且在瞬态条件下可以集成在高增益路径中，以便抑制输出DC中的纹波。
-
70.发明授权Position and velocity sensorless control for a motor generator system operated as a motor using exciter impedance 失效使用励磁机阻抗作为电机运行的电机发电机系统的位置和速度无传感器控制
公开(公告)号：US5747971A
公开(公告)日：1998-05-05
申请号：US694081
申请日：1996-08-08
CPC分类号： H02P9/02 , H02P9/08 , H02P9/302 , H02P2101/30
摘要： A motor generator system (120) in accordance with the invention includes a prime mover (21) for driving an output shaft (18), a main motor generator (105), having a rotor driven by the output shaft, for producing electrical power on at least one output winding (36a-36c) in response to the prime mover rotating the output shaft and for driving the output shaft in response to operation as a motor; an exciter (102) for applying excitation to a field winding (34) of the main motor generator during operation for producing electrical power on the at least one output winding and for applying current to the field winding of the main motor and generator to produce a magnetic field in the field winding during operation of the main motor generator as a motor; circuitry (122), responsive to current in a field winding (204) of the exciter, for producing an output signal representing a position of the rotor of the main motor generator driven by the output shaft; and a main inverter (114), responsive to the output signal, for commutating application of electrical current to the at least one output winding to control operation of the main motor generator during operation as a motor.
摘要翻译： 根据本发明的电动发电机系统（120）包括用于驱动输出轴（18）的原动机（21），具有由输出轴驱动的转子的主电动发电机（105），用于产生电力 至少一个输出绕组（36a-36c）响应于原动机旋转输出轴并响应于作为电动机的操作来驱动输出轴; 用于在所述至少一个输出绕组产生电力的操作期间向所述主电动发电机的励磁绕组（34）施加励磁并且将电流施加到所述主电动机和发电机的励磁绕组的励磁器（102），以产生 在作为电动机的主电动发电机运行期间的励磁绕组中的磁场; 电路（122）响应于励磁机的励磁绕组（204）中的电流，用于产生表示由输出轴驱动的主电动发电机的转子位置的输出信号; 以及响应于所述输出信号的主逆变器（114），用于将电流整流到所述至少一个输出绕组，以在作为电动机的操作期间控制所述主电动发电机的操作。
-
-
-
-
-
-
-
-
-
搜索结果
188 条记录 (耗时 0.043 秒)
