专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4563619A Electric power converter circuit 失效
标题翻译：电力转换电路
公开(公告)号：US4563619A
公开(公告)日：1986-01-07
申请号：US486954
申请日：1983-04-06
申请人： Rex M. Davis , William F. Ray
发明人： Rex M. Davis , William F. Ray
IPC分类号： H02M7/527 , H02P6/08 , H02P27/06 , H02P7/06
CPC分类号： H02M7/527
摘要： A multi-phase switched variable-reluctance motor having a number of phase windings (A, B, C) each connected in series with at least one main thyristor (1,2,3,4,5,6) across a D.C. supply (V.sub.5) has commutating means (23) responsive to the current in the different windings, the angular position of the rotor, the state of the main thyristors, the motor speed, and the desired operating condition, to control the firing and commutation of the main thyristors. Two modes of operation described in detail are a chopping mode in which chopping is controlled independently in two adjacent phases at the same time, and a single pulse mode with free-wheeling.
摘要翻译： PCT No.PCT / GB82 / 00262 Sec。 371日期：1983年4月6日 102（e）日期1983年4月6日PCT申请日1982年8月31日PCT公布。公开号WO83 / 00962 日期：1983年3月17日。具有多个相绕组（A，B，C）的多相开关可变磁阻电动机，每个相绕组与至少一个主晶闸管（1,2,3,4,5， 6）跨越DC电源（V5）具有响应于不同绕组中的电流，转子的角位置，主晶闸管的状态，电动机速度和期望的操作条件的换向装置（23），以控制主晶闸管的点火和换向。详细描述的两种操作模式是同时在两个相邻相位中独立地控制斩波的斩波模式和具有续流的单脉冲模式。

2. 发明授权

US4387326A Variable reluctance motor systems 失效
标题翻译：可变磁阻电机系统
公开(公告)号：US4387326A
公开(公告)日：1983-06-07
申请号：US187835
申请日：1980-01-10
申请人： William F. Ray , Rex M. Davis
发明人： William F. Ray , Rex M. Davis
IPC分类号： H02P23/00 , B60L11/18 , H02P25/08 , H02P27/06 , H02K29/02
CPC分类号： B60L11/1807 , H02P25/089 , Y02T10/646 , Y02T10/648 , Y02T10/7005
摘要： A variable reluctance electric motor system includes a variable reluctance motor having a main winding for each phase and a power converter circuit including a main thyristor in series with each main winding connected across a direct voltage source from which the main windings are supplied sequentially with uni-directional current pulses, characterized by a commutating thyristor (16) for starving the main thyristor (12) of the current flowing through one main winding (11) while charging a capacitor unit (51,52) in one sense, and a commutating thyristor (26) for starving the main thyristor (22) of the next phase winding (21) of the current flowing through the next main winding (21) while charging the capacitor unit in the other sense. The arrangement is such that commutation of a main thyristor initiated by firing a commutating thyristor and terminated when this commutating thyristor ceases to conduct, leaves the commutating capacitor unit charged with the correct polarity and adequate voltage for the commutation of the next main thyristor in the conducting sequence.
摘要翻译： PCT No.PCT / GB79 / 00078 Sec。 371日期1980年1月10日 102（e）日期1980年1月10日PCT申请日1979年5月24日PCT公布。出版物WO79 / 01132 日期：1979年12月27日。可变磁阻电动机系统包括具有每相的主绕组的可变磁阻电动机和电源转换器电路，电源转换器电路包括与跨过直流电压源连接的每个主绕组串联的主晶闸管，绕组以单向电流脉冲依次提供，其特征在于，一个换向晶闸管（16），用于使流过一个主绕组（11）的电流的主晶闸管（12）挨饿，同时在一个电容器单元（51,52）中充电感测和一个换向晶闸管（26），用于在另一方面对电容器单元进行充电，使流过下一个主绕组（21）的电流的下一个相绕组（21）的主晶闸管（22）挨饿。这种布置使得通过点火换向晶闸管引发的主晶闸管的换向，并且当该换向晶闸管停止导通时终止，使整流电容器单元充电正确的极性和足够的电压，用于导通下一个主晶闸管的换向序列。

3. 发明授权

US4360770A Variable reluctance motor systems 失效
标题翻译：可变磁阻电机系统
公开(公告)号：US4360770A
公开(公告)日：1982-11-23
申请号：US187837
申请日：1980-06-10
申请人： William F. Ray , Rex M. Davis
发明人： William F. Ray , Rex M. Davis
IPC分类号： H02P27/06 , B60L11/18 , H02P25/08 , H02P5/16
CPC分类号： B60L11/1807 , H02P25/092 , H02P25/0925 , Y02T10/642 , Y02T10/7005
摘要： A variable reluctance motor control system has for each main phase winding (11) a power converter circuit including a main thyristor (12) across a D.V. source (50) and a commutating circuit including a capacitor (51,52) and a commutating thristor (16), arranged to resonantly reverse the charge on the capacitor in preparation for energizing the next main phase winding (21) by passing a current through the other main phase winding.
摘要翻译： PCT No.PCT / GB79 / 00079 Sec。 371日期1980年1月10日 102（e）日期1980年1月10日PCT申请日1979年5月24日PCT公布。出版物WO79 / 01133 日期为1979年12月27日。可变磁阻电动机控制系统具有用于每个主相绕组（11）的功率转换器电路，其包括跨越D.V的主晶闸管（12）。源极（50）和包括电容器（51,52）和换向旋转器（16）的整流电路，其布置成使电容器上的电荷谐振地反向，以准备通过使电流通过电流来激励下一个主相绕组（21）另一主相绕组。

4. 发明授权

US4835408A Power conversion circuit 失效
标题翻译：电源转换电路
公开(公告)号：US4835408A
公开(公告)日：1989-05-30
申请号：US488547
申请日：1983-04-06
申请人： William F. Ray , Rex M. Davis
发明人： William F. Ray , Rex M. Davis
IPC分类号： H02M7/515 , H02M7/525 , H02P25/08
CPC分类号： H02M7/525 , H02M7/5155 , H02P25/0925 , H02M2007/4811 , Y10T307/352 , Y10T307/43 , Y10T307/461
摘要： A multi-phase switched reluctance motor is driven from a tow-point d.v. supply (11) in which capacitors (12) and (13) are provided across the supply with their common point (14) constituting a third power supply point. The load windings W.sub.1, W.sub.3, W.sub.5 and W.sub.2, W.sub.4, W.sub.6 are connected in two different load circuits connected across the different capacitors. In order to prevent the voltage of the third point wandering because the currents in the the two load circuits are not the same, control means (21) can control the distribution of current between the various load windings by appropriate control of semi-conductor switches in the various load circuits.
摘要翻译： PCT No.PCT / GB82 / 00261 Sec。 371日期：1983年4月6日 102（e）日期1983年4月6日PCT申请日1982年8月31日PCT公布。第WO83 / 00961号公报日期：1983年3月17日。多相开关磁阻电机由牵引点d.v驱动。电源（12）和（13）的电源（11）跨越电源提供有构成第三电源点的公共点（14）。负载绕组W1，W3，W5和W2，W4，W6连接在跨不同电容器连接的两个不同的负载电路中。为了防止第三点的电压由于两个负载电路中的电流不相同而流动，控制装置（21）可以通过适当地控制半导体开关的控制来控制各种负载绕组之间的电流分布各种负载电路。

5. 发明授权

US5563487A Control circuit for an inductive load 失效
标题翻译：用于感性负载的控制电路
公开(公告)号：US5563487A
公开(公告)日：1996-10-08
申请号：US426158
申请日：1995-04-21
申请人： Rex M. Davis
发明人： Rex M. Davis
IPC分类号： H02M7/217 , H02M7/12 , H02P25/08 , H02P7/05 , H02K19/06
CPC分类号： H02M7/12 , H02M1/4225 , H02M7/217 , H02P23/26 , H02P25/08 , H02M1/12 , H02M7/06
摘要： A control circuit for an inductive load, such as a phase winding of a reluctance motor, includes a boost flyback converter. The controller includes a dc link capacitor switchable across the load by means of a control switch and a suppressor switch for controlling the application of rectified current to the dc link capacitor. The suppressor switch is operated independently of the control switch in order to control the rectified current so that it follows the sinusoidal input voltage waveform. By this technique, the harmonics generated by switching the rectified input current are substantially suppressed.
摘要翻译：用于感性负载的控制电路，例如磁阻电动机的相绕组，包括升压反激转换器。该控制器包括一个直流链路电容器，可通过一个控制开关和一个用于控制直流链路电容器整流电流的控制开关的负载开关。抑制器开关独立于控制开关运行，以控制整流电流，使其符合正弦输入电压波形。通过这种技术，基本上抑制了通过切换整流输入电流而产生的谐波。

6. 发明授权

US4253053A Reluctance electric motor drive systems 失效
标题翻译：磁阻电动机驱动系统
公开(公告)号：US4253053A
公开(公告)日：1981-02-24
申请号：US890946
申请日：1978-03-28
申请人： William F. Ray , Rex M. Davis
发明人： William F. Ray , Rex M. Davis
IPC分类号： H02P27/02 , H02P7/00 , H02P25/08 , H02P27/06 , H02P7/36
CPC分类号： H02P25/08 , H02P7/03
摘要： In a variable reluctance electric drive system motor the fractions of a cycle during which the winding inductance of a phase increases with movement in either direction are such that the motor is self starting in either direction. The timing of the power converter in relation to the cycle of inductance is such that the current increases from its minimum value to substantially its maximum value while the winding inductance is substantially at its minimum value and thereafter substantially decreases before the power converter disconnects the winding from the supply. This can be achieved by making the switch-on and commutation of current occur at predetermined positions so related to the variation of inductance that the peak current ip at maximum power and maximum speed, is greater than I, where I=E/(R+dL/dt), E is the supply voltage, R the winding resistance and dL/dt is the maximum rate of increase of inductance before the commutation point.
摘要翻译：在可变磁阻电动驱动系统电动机中，相位的绕组电感随着任一方向的运动而增加的周期的一部分使得电动机在任一方向上是自启动的。功率转换器相对于电感周期的定时使得电流从其最小值增加到其最大值，同时绕组电感基本上处于其最小值，然后在功率转换器断开绕组之前基本上减小供应。这可以通过使电流的接通和换向在与最大功率和最大速度下的峰值电流ip大于I的电感变化相关的预定位置处实现，其中I = E /（R + dL / dt），E是电源电压，R是绕组电阻，dL / dt是换向点前电感的最大增加速率。

7. 发明授权

US5705918A Switched reluctance generators 失效
标题翻译：开关磁阻发电机
公开(公告)号：US5705918A
公开(公告)日：1998-01-06
申请号：US511352
申请日：1995-08-04
申请人： Rex M. Davis
发明人： Rex M. Davis
IPC分类号： H02P9/30 , H02P9/40 , H02P9/00
CPC分类号： H02P9/40
摘要： A switched reluctance generator is controlled such that flux growth in a phase winding occurs at a faster rate during the initial part of the phase inductance cycle and at a second, slower rate during the subsequent part of the phase inductance cycle. The difference between flux growth and decay may be achieved either by applying different voltages during the two parts of the phase inductance cycle or by applying the same voltage over only part of the phase winding during the initial part of the phase inductance cycle and then applying that voltage across the phase winding thereafter. It is advantageous to make the increase in flux more rapid than its decay because minimizing the length of time that the flux is present while the phase inductance is rising will minimize the production of unwanted (motoring) torque.
摘要翻译：控制开关磁阻发生器，使得在相电感周期的初始部分期间相绕组中的通量增长以更快的速率发生，并且在相电感周期的后续部分期间以第二较慢的速率发生。通量增长和衰减之间的差异可以通过在相电感周期的两个部分期间施加不同的电压或者在相电感周期的初始部分期间通过在相绕组的一部分上施加相同的电压来实现，之后的相绕组电压。使通量增加比其衰减更快是有利的，因为在相电感上升时最小化通量存在的时间长度将最小化不希望（驱动）转矩的产生。

8. 发明授权

US5449993A Regenerative ac to dc converter 失效
标题翻译：再生交流直流转换器
公开(公告)号：US5449993A
公开(公告)日：1995-09-12
申请号：US255698
申请日：1994-06-07
申请人： Rex M. Davis
发明人： Rex M. Davis
IPC分类号： H02M3/158 , H02M5/45 , H02P3/06 , H02P3/14 , H02P6/00
CPC分类号： H02M5/45 , H02M3/158 , H02P3/065
摘要： A regenerative ac to dc convertor includes a thyristor bridge invertor and a rectifier having a dc link capacitor. A second capacitor is connected across the invertor. In a regenerative braking mode of the motor the invertor is arranged to return energy from the second capacitor to the ac supply. Circulating currents are inhibited by diodes connecting the dc link and second capacitor. A first diode is arrange to conduct from the positive terminal of the second capacitor to the positive terminal of the dc link capacitor. A second diode is arranged so that it conducts from the negative terminal of the dc link capacitor to the negative terminal of the second capacitor.
摘要翻译：再生交流直流转换器包括晶闸管桥式逆变器和具有直流链路电容器的整流器。第二电容器连接在逆变器上。在电动机的再生制动模式中，逆变器被布置成将能量从第二电容器返回到交流电源。循环电流由连接直流母线和第二电容器的二极管抑制。第一二极管被布置成从第二电容器的正端子传导到直流链路电容器的正端子。第二二极管被布置成使得其从直流链路电容器的负端子传导到第二电容器的负极端子。

9. 发明授权

US5008523A Current measuring circuit with means for nullifying the effects of current source and lead resistance 失效
标题翻译：电流测量电路，具有无效电流源和引线电阻效应的方法
公开(公告)号：US5008523A
公开(公告)日：1991-04-16
申请号：US412715
申请日：1989-09-26
申请人： Rex M. Davis , Mark E. Greiner
发明人： Rex M. Davis , Mark E. Greiner
IPC分类号： G01R19/00
CPC分类号： G01R19/0023
摘要： Current derived from an indium arsenide current generating photodetector is determined accurately, despite the presence of a variable resistance between terminals of the photodetector and the photodetector having leads with appreciable resistance connected to the detector terminals. Two leads are connected to each detector terminal. The two leads connected to one of the detector terminals are respectively connected to an inverting input terminal of an operational amplifier and to one terminal of a feedback resistor of the amplifier; the other terminal of the feedback resistor is connected to the amplifier output terminal. The two leads connected to the other terminal of the photodetector are respectively connected to the operational amplifier non-inverting input terminal and to ground. The operational amplifier derives an output voltage that accurately represents the output current of the photodetector, independently of the photodetector resistance and the lead wire resistance.
摘要翻译：尽管在光电检测器的端子和具有连接到检测器端子的明显电阻的引线的光电检测器之间存在可变电阻，但是准确地确定了来自砷化铟电流产生光电检测器的电流。两个引线连接到每个检测器端子。连接到检测器端子之一的两个引线分别连接到运算放大器的反相输入端子和放大器的反馈电阻器的一个端子; 反馈电阻的另一个端子连接到放大器输出端子。连接到光电检测器的另一端的两个引线分别连接到运算放大器的非反相输入端并接地。运算放大器独立于光检测器电阻和引线电阻，得出精确表示光电检测器的输出电流的输出电压。

10. 发明授权

US5504410A Switching circuit 失效
标题翻译：开关电路
公开(公告)号：US5504410A
公开(公告)日：1996-04-02
申请号：US180957
申请日：1994-01-13
申请人： Rex M. Davis
发明人： Rex M. Davis
IPC分类号： H02M7/48 , H02M7/487 , H02P9/00 , H02P25/08 , H02P1/46
CPC分类号： H02M7/487 , H02P25/092 , H02P9/00
摘要： A switching circuit for a switched reluctance motor or generator comprises positive and negative power lines, a string of smoothing capacitors serially connected between them and two pairs of gate turn-off thyristors connected to either end of a phase winding of the motor or generator. Circulating diodes are connected between the ends of the winding and the opposite power line and further circulating diodes are connected between each pair of thyristors. A mid-point between the capacitors is connected between the further diodes. At switch-off one of the outer GTO's is first opened so that one of the diodes conducts and current in the winding is routed via the mid-point. Then the other outer GTO is opened so that current now circulates through both of the diodes and substantially no voltage is dropped across the winding. The first inner GTO is then opened causing one of the diodes to conduct. Thereafter the second inner GTO can be opened. Turn-on requires a progressive reversal of the turn-off sequence if winding current continues to flow. Otherwise, all but one outer GTO are turned on together followed by the omitted GTO after a delay. The GTO to be omitted initially at turn-on is chosen to provide the desired correction to the voltage at the midpoint.
摘要翻译：用于开关磁阻电动机或发电机的开关电路包括正电源线和负电源线，串联连接在它们之间的平滑电容器串和连接到电动机或发电机的相绕组的任一端的两对栅极截止晶闸管。循环二极管连接在绕组的两端和相对的电源线之间，另外的循环二极管连接在每对晶闸管之间。电容器之间的中点连接在另外的二极管之间。在关闭时，外部GTO之一被首先打开，使得二极管中的一个导通，并且绕组中的电流经由中点路由。然后打开另一个外部GTO，使得电流现在通过两个二极管循环，并且基本上没有电压在绕组上下落。然后打开第一个内部GTO，导致二极管中的一个导通。此后可以打开第二内部GTO。如果绕组电流继续流动，导通需要逐渐反转关断序列。否则，除了一个外部GTO之外，除了一个延迟之后，所有除了GTO之外都被打开。选择在开启时最初省略的GTO可以为中点处的电压提供所需的校正。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式