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1.发明公开BALANCING VIBRATIONS AT HARMONIC FREQUENCIES BY INJECTING HARMONIC BALANCING SIGNALS INTO THE ARMATURE OF A LINEAR MOTOR/ALTERNATOR COUPLED TO A STIRLING MACHINE 审中-公开IN的谐波频率的振动的通过注射谐波补偿信号的补偿IN A斯特林发动机的一类耦合直线电机锚/发电机
公开(公告)号：EP2872794A1
公开(公告)日：2015-05-20
申请号：EP13819387.5
申请日：2013-05-17
申请人： Sunpower Inc.
IPC分类号： F16F15/02
CPC分类号： H02P9/02 , F02G1/043 , F02G2280/10 , G05D19/02 , H02P9/008 , H02P9/44 , H02P2101/45
摘要： Vibrations at harmonic frequencies are reduced by injecting harmonic balancing signals into the armature of a linear motor/alternator coupled to a Stirling machine. The vibrations are sensed to provide a signal representing the mechanical vibrations. A harmonic balancing signal is generated for selected harmonics of the operating frequency by processing the sensed vibration signal with adaptive filter algorithms of adaptive filters for each harmonic. Reference inputs for each harmonic are applied to the adaptive filter algorithms at the frequency of the selected harmonic. The harmonic balancing signals for all of the harmonics are summed with a principal control signal. The harmonic balancing signals modify the principal electrical drive voltage and drive the motor/alternator with a drive voltage component in opposition to the vibration at each harmonic.
摘要翻译： 在谐波频率振动由谐波平衡信号注入到线性电动机/发电机连接到斯特林机的电枢降低。 振动被感测，以提供表示所述机械振动的信号。 是通过处理与针对每个谐波的自适应滤波器的自适应滤波算法的感测的振动信号的工作频率的选择的谐波产生的谐波平衡信号。 对于每个谐波的参考输入在选定谐波的频率施加到所述自适应滤波器的算法。 对于所有的谐波的谐波平衡信号求和与主体控制信号。 谐波平衡信号修改的主要电驱动电压，并与反对在每个谐波振动的驱动电压分量驱动马达/发电机。
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2.发明授权TRANSIENT TEMPERATURE CONTROL SYSTEM AND METHOD FOR PREVENTING DESTRUCTIVE COLLISIONS IN FREE PISTON MACHINES 有权转变温度控制系统和方法对于在自由活塞式机器，预防破坏性碰撞
公开(公告)号：EP1718843B1
公开(公告)日：2009-07-29
申请号：EP04781394.4
申请日：2004-08-18
申请人： SUNPOWER, INC.
IPC分类号： F01B29/10
CPC分类号： F25B9/14 , F25B2309/001 , F25B2309/1428 , F25B2500/26
摘要： The free piston cooler transient temperature control system of the present invention eliminates collisions during the transient cool-down period in a free piston cooler upon start-up. The transient temperature control system incorporates a free piston cooler, having a cold head and a warm end, a cold head temperature sensor, a relational interface, and a temperature controller. The cold head temperature sensor senses the temperature of the cold head and generates a temperature signal. The relational interface is in communication with the temperature signal and contains a predetermined relationship between the cold head temperature and a maximum piston stroke during the transient cool-down temperature range. The relational interface generates a transient range maximum allowable stroke signal from the temperature signal and the predetermined relationship. The temperature controller is in communication with the relational interface and limits the piston stroke during the transient cool-down temperature range to prevent collisions.
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3.发明公开DRIVING AN ACTIVE VIBRATION BALANCER TO MINIMIZE VIBRATIONS AT THE FUNDAMENTAL AND HARMONIC FREQUENCIES 审中-公开控制基础和谐波频率主动平衡装置，减少振动
公开(公告)号：EP2872795A1
公开(公告)日：2015-05-20
申请号：EP13820610.7
申请日：2013-05-17
申请人： Sunpower Inc.
IPC分类号： F16F15/02
CPC分类号： F16F15/002
摘要： Vibrations of a principal machine are reduced at the fundamental and harmonic frequencies by driving the drive motor of an active balancer with balancing signals at the fundamental and selected harmonics. Vibrations are sensed to provide a signal representing the mechanical vibrations. A balancing signal generator for the fundamental and for each selected harmonic processes the sensed vibration signal with adaptive filter algorithms of adaptive filters for each frequency to generate a balancing signal for each frequency. Reference inputs for each frequency are applied to the adaptive filter algorithms of each balancing signal generator at the frequency assigned to the generator. The harmonic balancing signals for all of the frequencies are summed and applied to drive the drive motor. The harmonic balancing signals drive the drive motor with a drive voltage component in opposition to the vibration at each frequency.
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4.发明公开CONTROLLER COMPUTING A VIRTUAL TUNING CAPACITOR FOR CONTROLLING A FREE-PISTON STIRLING ENGINE DRIVING A LINEAR ALTERNATOR 有权控制器的虚拟调谐电容器用于控制自由活塞式斯特林发动机用于驱动线性转换计算
公开(公告)号：EP2156341A1
公开(公告)日：2010-02-24
申请号：EP08769084.8
申请日：2008-03-28
申请人： SUNPOWER, INC.
IPC分类号： G06F17/50
CPC分类号： F02G1/043 , F02D29/00 , F02G1/0435 , F02G2280/10 , H02P31/00
摘要： A feedback control circuit and method for a control system used to control an electrical power generating source that comprises a free piston Stirling engine driving a linear alternator. A switching mode rectifier connects the alternator winding to an output circuit that includes an electrical energy storage means and is controlled by a pulse width modulator that controls the rectifier switching duty cycle and phase. The control system controls the pulse width modulator. The improvement computes a voltage across a virtual tuning capacitor and uses the computed voltage to control the switching mode rectifier so that the switching mode rectifier is switched in a manner that makes the alternator circuit operate as if a tuning capacitor were actually present and so that the control system controls the piston of the Stirling engine to maintain balance of the mechanical power generated by the Stirling engine and the electrical power absorbed from the engine by the alternator.
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5.发明公开TRANSIENT TEMPERATURE CONTROL SYSTEM AND METHOD FOR PREVENTING DESTRUCTIVE COLLISIONS IN FREE PISTON MACHINES 有权转变温度控制系统和方法对于在自由活塞式机器，预防破坏性碰撞
公开(公告)号：EP1718843A1
公开(公告)日：2006-11-08
申请号：EP04781394.4
申请日：2004-08-18
申请人： SUNPOWER, INC.
IPC分类号： F01B29/10
CPC分类号： F25B9/14 , F25B2309/001 , F25B2309/1428 , F25B2500/26
摘要： The free piston cooler transient temperature control system of the present invention eliminates collisions during the transient cool-down period in a free piston cooler upon start-up. The transient temperature control system incorporates a free piston cooler, having a cold head and a warm end, a cold head temperature sensor, a relational interface, and a temperature controller. The cold head temperature sensor senses the temperature of the cold head and generates a temperature signal. The relational interface is in communication with the temperature signal and contains a predetermined relationship between the cold head temperature and a maximum piston stroke during the transient cool-down temperature range. The relational interface generates a transient range maximum allowable stroke signal from the temperature signal and the predetermined relationship. The temperature controller is in communication with the relational interface and limits the piston stroke during the transient cool-down temperature range to prevent collisions.
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6.发明授权CONTROLLER COMPUTING A VIRTUAL TUNING CAPACITOR FOR CONTROLLING A FREE-PISTON STIRLING ENGINE DRIVING A LINEAR ALTERNATOR 有权控制器的虚拟调谐电容器用于控制自由活塞式斯特林发动机用于驱动线性转换计算
公开(公告)号：EP2156341B1
公开(公告)日：2013-05-22
申请号：EP08769084.8
申请日：2008-03-28
申请人： SUNPOWER, INC.
CPC分类号： F02G1/043 , F02D29/00 , F02G1/0435 , F02G2280/10 , H02P31/00
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公开(公告)号：EP2536982A1
公开(公告)日：2012-12-26
申请号：EP10846286.2
申请日：2010-10-12
申请人： Sunpower, Inc.
IPC分类号： F25B9/00
CPC分类号： G01M15/06
摘要： A sensor for sensing the position of a reciprocating free piston in a free piston Stirling machine. The sensor has a disk mounted to an end face of the power piston coaxially with its cylinder and reciprocating with the piston The disk includes a rim around its outer perimeter formed of an electrically conductive material A coil is wound coaxially with the cylinder, spaced outwardly from the outer perimeter of the disk and mounted in fixed position relative to the pressure vessel, preferably on the exterior of the pressure vessel wall.
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公开(公告)号：EP1735571B1
公开(公告)日：2009-09-02
申请号：EP05730812.4
申请日：2005-03-25
申请人： SUNPOWER, INC.
CPC分类号： F04B49/12 , F25B9/14 , F25B2309/001 , F25B2309/1428
摘要： A cryocooler having two operating modes so that its operating range is broadened, its gas bearing system is maintained in an operable state and it can utilize piston stroke modulation for energy efficiency. A piston stroke modulator modulates the piston stroke when the commanded piston stroke exceeds the minimum stroke and maintains the minimum stroke when the commanded stroke is less than the minimum stroke. A heater applies heater power to the thermal load when the commanded piston stroke is less than the minimum piston stroke. A closed loop feedback control system is used which has two branches of its dynamic leg. One branch controls the modulation of the cryocooler and the second, parallel branch controls the modulation of the heater.
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公开(公告)号：EP1735571A2
公开(公告)日：2006-12-27
申请号：EP05730812.4
申请日：2005-03-25
申请人： SUNPOWER, INC.
CPC分类号： F04B49/12 , F25B9/14 , F25B2309/001 , F25B2309/1428
摘要： A cryocooler having two operating modes so that its operating range is broadened, its gas bearing system is maintained in an operable state and it can utilize piston stroke modulation for energy efficiency. A piston stroke modulator modulates the piston stroke when the commanded piston stroke exceeds the minimum stroke and maintains the minimum stroke when the commanded stroke is less than the minimum stroke. A heater applies heater power to the thermal load when the commanded piston stroke is less than the minimum piston stroke. A closed loop feedback control system is used which has two branches of its dynamic leg. One branch controls the modulation of the cryocooler and the second, parallel branch controls the modulation of the heater.
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