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1. 发明授权

US5559686A Stepped waveform inverter control 失效
标题翻译：步进波形逆变器控制
公开(公告)号：US5559686A
公开(公告)日：1996-09-24
申请号：US273039
申请日：1994-07-08
申请人： Sunil Patel , Chai-Nam Ng , P. John Dhyanchand , Vietson M. Nguyen , Michael Teagardin
发明人： Sunil Patel , Chai-Nam Ng , P. John Dhyanchand , Vietson M. Nguyen , Michael Teagardin
IPC分类号： H02M7/48 , H02M7/49 , H02M7/539 , H02M1/12
CPC分类号： H02M7/49 , H02M7/539
摘要： A stepped waveform inverter and control therefor utilizes the inverter itself as a divide-by-N counter in a phase-locked loop to assure precise control over the output phase and frequency of the inverter.
摘要翻译：阶梯式波形逆变器及其控制在锁相环中利用逆变器本身作为N分频计数器，以确保对逆变器输出相位和频率的精确控制。

2. 发明授权

US5317299A Electromagnetic transformer 失效
标题翻译：电磁变压器
公开(公告)号：US5317299A
公开(公告)日：1994-05-31
申请号：US725487
申请日：1991-07-03
申请人： P. John Dhyanchand , Jayant Vaidya , Rajhunath Mokadam , Richard Arbanella
发明人： P. John Dhyanchand , Jayant Vaidya , Rajhunath Mokadam , Richard Arbanella
IPC分类号： H01F30/12 , H01F33/00 , H02J3/00
CPC分类号： H01F30/12 , Y10T307/266 , Y10T307/289
摘要： A summing transformer having a core structure, first primary and secondary windings wound on the core structure for establishing a rotating electromagnetic field when the first primary winding is energized, and second primary and secondary windings wound on the core structure for establishing a rotating electromagnetic field when the second primary winding is energized, and wherein the second first and second secondary windings are connected together so that voltages induced therein are added.
摘要翻译：一种具有芯结构的加法变压器，缠绕在所述芯结构上的第一初级和次级绕组，用于当所述第一初级绕组通电时建立旋转电磁场，以及缠绕在所述芯结构上的第二初级和次级绕组以建立旋转电磁场，所述第二初级绕组被通电，并且其中所述第二第一和第二次级绕组连接在一起，使得其中引入的电压被添加。

3. 发明授权

US5097241A Cooling apparatus for windings 失效
标题翻译：绕组冷却装置
公开(公告)号：US5097241A
公开(公告)日：1992-03-17
申请号：US459000
申请日：1989-12-29
申请人： Edward Smith , P. John Dhyanchand
发明人： Edward Smith , P. John Dhyanchand
IPC分类号： H01F27/10 , H01F27/28
CPC分类号： H01F27/10 , H01F27/2876 , Y10S174/25 , Y10S174/32
摘要： A cooling apparatus for windings provides the ability to cool transformer windings having many turns during high frequency use with most any coolant. The cooling apparatus comprises a thermally conductive, coolant-isolating conduit having a channel therethrough for the passage of coolant disposed between the turns of the winding in heat transfer relationship therewith.
摘要翻译：用于绕组的冷却装置提供了在大多数任何冷却剂的高频率使用期间冷却具有许多匝的变压器绕组的能力。冷却装置包括导热的冷却剂隔离导管，其具有穿过其的通道，用于使热交换关系中的冷却剂通过。

4. 发明授权

US5055700A Brushless generator having prime mover start capability 失效
标题翻译：具有原动机启动能力的无刷发电机
公开(公告)号：US5055700A
公开(公告)日：1991-10-08
申请号：US421640
申请日：1989-10-16
申请人： P. John Dhyanchand
发明人： P. John Dhyanchand
IPC分类号： F02N11/04
CPC分类号： F02N11/04
摘要： A brushless generator which is operable in a generating mode to convert motive power into electrical power, and in a starting mode to convert electrical power into motive power includes a set of electrically conductive bars disposed on a rotor of the generator and which are interconnected to form a squirrel cage winding whereby AC power may be provided to a main generator portion armature winding which induces currents in the bars and causes the generator to operate as an induction motor. Circuitry is provided for periodically shorting a main field winding of the generator during operation of the generator in the starting mode to prevent damage thereto.
摘要翻译：一种在发电模式下可操作以将动力转换为电力的无刷发电机，并且在将电力转换成动力的起动模式包括设置在发电机的转子上并且互连形成的一组导电棒鼠笼式绕组，由此可以向主发电机部分电枢绕组提供交流电力，该电枢绕组在线路中引起电流并使发电机作为感应电动机工作。提供电路，用于在起动模式下在发电机运行期间使发电机的主励磁绕组周期性短路，以防止其损坏。

5. 发明授权

US5008797A Power converter utilizing line replaceable units 失效
标题翻译：电源转换器利用线路可更换单元
公开(公告)号：US5008797A
公开(公告)日：1991-04-16
申请号：US453974
申请日：1989-12-20
申请人： Sunil Patel , Robert Ligon , P. John Dhyanchand
发明人： Sunil Patel , Robert Ligon , P. John Dhyanchand
IPC分类号： H02M7/48 , H02M7/49
CPC分类号： H02M7/49
摘要： Prior power converters utilizing a plurality of switches operated by control circuitry include many components which are subject to failure. When such a failure occurs, it may prove difficult to isolate the problem and repair the power converter. In order to overcome this problem, a power converter is packaged as a plurality of identical line replaceable units each of which may be easily replaced in the event of a malfunction.
摘要翻译：利用由控制电路操作的多个开关的现有功率转换器包括许多被故障的部件。当发生这种故障时，可能难以将问题隔离并修复电源转换器。为了克服这个问题，功率转换器被封装为多个相同的线路可替换单元，每个可更换单元在故障的情况下可以容易地更换。

6. 发明授权

US4692671A Electrically-compensated constant speed drive 失效
标题翻译：电动补偿恒速驱动
公开(公告)号：US4692671A
公开(公告)日：1987-09-08
申请号：US893946
申请日：1986-08-06
申请人： Bryan W. Dishner , Richard D. Juarros , P. John Dhyanchand
发明人： Bryan W. Dishner , Richard D. Juarros , P. John Dhyanchand
IPC分类号： F02C7/32 , H02M5/27 , H02P29/00 , F01D15/10 , H02P9/00
CPC分类号： F02C7/32 , H02M5/272 , H02P29/0016 , Y02T50/671
摘要： An electrically-compensated constant speed drive according to the present invention includes a speed summer having first and second input shafts and an output shaft at which constant speed motive power is developed wherein the first input shaft is coupled to a prime mover output shaft. A speed-compensating permanent magnet machine includes a motive power shaft coupled to the second input shaft of the speed summer and electrical power windings. A control permanent magnet machine includes a motive power shaft coupled to the output shaft of the speed summer and also includes electrical power windings. A power converter interconnects the power windings of the permanent magnet machines and comprises a first bi-directional AC/DC converter coupled to the electrical power windings of one of the permanent magnet machines, a second bi-directional AC/DC converter coupled to the electrical power windings of the other of the permanent magnet machines, a bi-directional DC/DC converter coupled between the AC/DC converters and a circuit for controlling the converters whereby the speed compensating permanent magnet machine develops compensating speed of a magnitude and direction sufficient to maintain the speed summer output shaft at the desired speed.
摘要翻译：根据本发明的电动补偿恒速驱动器包括具有第一和第二输入轴的速度加速器和在其上产生恒定速度动力的输出轴，其中第一输入轴联接到原动机输出轴。速度补偿永磁电机包括耦合到速度夏季和电力绕组的第二输入轴的动力轴。控制永磁电机包括耦合到速度夏季的输出轴的动力轴，并且还包括电力绕组。功率转换器互连永磁体机器的功率绕组，并且包括耦合到永磁体机器中的一个的电功率绕组的第一双向AC / DC转换器，耦合到电气的第二双向AC / DC转换器永磁电机中的另一个的功率绕组，耦合在AC / DC转换器之间的双向DC / DC转换器和用于控制转换器的电路，由此速度补偿永磁体机器产生的幅度和方向的补偿速度足以将夏季输出轴的速度保持在所需的速度。

7. 发明授权

US5057808A Transformer with voltage balancing tertiary winding 失效
标题翻译：变压器与电压平衡中频
公开(公告)号：US5057808A
公开(公告)日：1991-10-15
申请号：US457944
申请日：1989-12-27
申请人： P. John Dhyanchand
发明人： P. John Dhyanchand
IPC分类号： H01F27/38 , H01F30/12 , H02M7/48 , H02M7/49
CPC分类号： H02M7/49 , H01F27/38 , H01F30/12
摘要： A summing transformer includes first and second sets of primary windings, first and second sets of secondary windings inductively linked with the first and second sets of primary windings and a set of tertiary windings inductively linked with one of the first and second sets of secondary windings wherein the tertiary windigs are connected together and permit zero sequence currents to flow during a period of unbalanced load currents in the sets of secondary windings whereby the output voltages produced thereby are maintained in a substantially balanced condition during such period.
摘要翻译：求和变压器包括第一和第二组初级绕组，与第一和第二组初级绕组感应地连接的第一和第二组次级绕组，以及与第一组和第二组次级绕组感应地连接的一组三级绕组，其中三级风格机连接在一起，并且允许零序电流在次级绕组组中的不平衡负载电流期间流动，由此在其产生的输出电压在这样的时间段期间保持在基本平衡的状态。

8. 发明授权

US5045991A Unity power factor AC/DC converter 失效
标题翻译： Unity功率因数AC / DC转换器
公开(公告)号：US5045991A
公开(公告)日：1991-09-03
申请号：US458440
申请日：1989-12-28
申请人： P. John Dhyanchand , Vietson Nbuyen
发明人： P. John Dhyanchand , Vietson Nbuyen
IPC分类号： H02M1/00 , H02M1/42 , H02M7/219
CPC分类号： H02M1/4233 , H02M7/219 , H02M1/4216 , Y02B70/126 , Y02P80/112
摘要： A control for an AC/DC power converter having first and second switches and which converts an AC voltage supplied by an AC source into a DC voltage on a DC output conductor includes circuitry for developing an error signal representing the deviation of the DC voltage from a desired level and a multiplier coupled to the developing circuitry and responsive to the AC voltage for deriving a reference signal representing a desired current magnitude from the AC source. A current sensor develops a current magnitude signal representing the magnitude of the current from the AC source and a circuitry having a hysteresis characteristic compares the current magnitude signal with the reference signal to obtain a comparison signal. Buffer and interface circuits operable the first and second switches in accordance with the comparison signal to in turn cause the DC voltage to approach the desired level and to cause the current from the AC power source to have a certain phase relationship with respect to the AC voltage supplied thereby.
摘要翻译：具有第一和第二开关并将由AC电源提供的AC电压转换成DC输出导体上的DC电压的AC / DC电力转换器的控制器包括用于产生表示DC电压偏离的误差信号的电路耦合到显影电路并响应于AC电压从AC源导出表示期望的电流幅度的参考信号。电流传感器产生表示来自AC源的电流幅度的电流幅度信号，并且具有滞后特性的电路将当前幅度信号与参考信号进行比较以获得比较信号。缓冲器和接口电路根据比较信号对第一和第二开关进行操作，从而使DC电压接近所需的电平，并使来自AC电源的电流相对于AC电压具有一定的相位关系由此提供。

9. 发明授权

US5040105A Stepped-waveform inverter with eight subinverters 失效
标题翻译：带八个次级换流器的步进波形逆变器
公开(公告)号：US5040105A
公开(公告)日：1991-08-13
申请号：US454434
申请日：1989-12-20
申请人： P. John Dhyanchand , Sunil Patel , Chai-Nam Ng , Vietson Nguyen
发明人： P. John Dhyanchand , Sunil Patel , Chai-Nam Ng , Vietson Nguyen
IPC分类号： H02M7/48 , H02M7/49
CPC分类号： H02M7/49
摘要： An inverter for use in a variable-speed, constant-frequency power conversion system of the type used in an aircraft, for example, includes a four subinverter pairs, each of which generates a respective set of waveforms. The four subinverter pairs are connected to a summing transformer having eight sets pairs of primary windings and eight sets of secondary windings coupled to the primary windings. A regulator is coupled to the output of the summing transformer and varies the phase angles between the waveforms generated by the four subinverter pairs based upon the voltage and current at the output of the summing transformer in order to regulate the voltage at the output of the summing transformer.
摘要翻译：例如，用于在飞机上使用的类型的变速恒定频率功率转换系统中的逆变器包括四个子逆变器对，每个子反相器产生相应的一组波形。四个副变换器对连接到具有八组初级绕组和八组次级绕组的求和变压器，该组绕组耦合到初级绕组。调节器耦合到求和变压器的输出，并且基于在求和变压器的输出处的电压和电流来改变由四个副变换器对产生的波形之间的相位角，以便调节在求和的输出处的电压变压器。

10. 发明授权

US5015941A Power conversion system with bi-directional power converter having prime mover start capability 失效
标题翻译：具有双向功率转换器的电力转换系统具有原动机启动功能
公开(公告)号：US5015941A
公开(公告)日：1991-05-14
申请号：US428969
申请日：1989-10-30
申请人： P. John Dhyanchand
发明人： P. John Dhyanchand
IPC分类号： F02N11/04 , H02P9/04
CPC分类号： H02P9/04 , F02N11/04 , H02P2101/30
摘要： A power conversion system utilizes a brushless generator driven by a prime mover when operating in a generating mode and drives the prime mover when operating in a starting mode. The system includes first and second bidirectional converter/inverter units, each of the bidirectional units being operable as either an AC to DC converter or a DC to AC inverter. A DC link couples the first and second bidirectional units. A transformer is connected to the second unit and the first unit is further connected to the armature windings, the transformer further being connected to the external power source. A control unit is connected to the first and second bidirectional units and causes the first bidirectional unit to operate as a converter and the second bidirectional unit to operate as an inverter when operating in the generating mode, and for causing the first bidirectional unit to operate as an inverter and the second bidirectional unit to operate as a converter when operating in the starting mode.
摘要翻译：电力转换系统在以发电模式工作时利用由原动机驱动的无刷发电机，并且在起动模式下工作时驱动原动机。该系统包括第一和第二双向转换器/逆变器单元，每个双向单元可操作为AC至DC转换器或DC至AC逆变器。 DC链路耦合第一和第二双向单元。变压器连接到第二单元，第一单元进一步连接到电枢绕组，变压器进一步连接到外部电源。控制单元连接到第一和第二双向单元，并且使得第一双向单元作为转换器工作，并且第二双向单元在以生成模式操作时用作逆变器，并且用于使第一双向单元作为逆变器和第二双向单元，以在起动模式下工作时作为转换器工作。

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