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1. 发明授权

US4651267A Proportional base drive circuit for transistorized bridge inverter 失效
标题翻译：晶体管桥式逆变器的比例基极驱动电路
公开(公告)号：US4651267A
公开(公告)日：1987-03-17
申请号：US745403
申请日：1985-06-14
申请人： Vietson M. Nguyen , P. John Dhyanchand , Pierre S. Thollot
发明人： Vietson M. Nguyen , P. John Dhyanchand , Pierre S. Thollot
IPC分类号： H02H7/122 , H02M7/5383 , H02M7/53846 , H02M7/53862 , H02M7/5387
CPC分类号： H02M7/53862 , H02H7/1227 , H02M7/49 , H02M7/53846 , H03K17/0424
摘要： A proportional base drive circuit which overcomes the problems of the prior art relative to relatively long turn-off time of power switches in an inverter and the absence of protection circuitry therefor includes a current transformer having a primary winding coupled to a main current electrode of a pair of power switches and first and second secondary windings each of which develops regenerative currents proportional to load current. First and second auxiliary switches are coupled between the secondary windings and the control electrodes of the power switches. Means are included for operating the auxiliary switches in synchronism with the power switches so that the power switches operate in rapid fashion. Means are also included for disabling the power switches when an overcurrent condition is sensed.
摘要翻译：克服现有技术相对于逆变器中的功率开关的相对长的关断时间的问题的比例基极驱动电路以及不存在其保护电路的电流互感器包括电流互感器，其具有耦合到主电流电极一对电源开关和第一和第二次级绕组，每个绕组产生与负载电流成比例的再生电流。第一和第二辅助开关耦合在次级绕组和功率开关的控制电极之间。包括用于与电源开关同步操作辅助开关的装置，使得电源开关以快速方式操作。当检测到过电流条件时，还包括用于禁用电源开关的装置。

2. 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。

3. 发明授权

US5301098A Feedforward inverter phase control 失效
标题翻译：前馈逆变器相位控制
公开(公告)号：US5301098A
公开(公告)日：1994-04-05
申请号：US911549
申请日：1992-07-09
申请人： P. John Dhyanchand , Vietson M. Nguyen , Sunil Patel , Chai-Nam Ng
发明人： P. John Dhyanchand , Vietson M. Nguyen , Sunil Patel , Chai-Nam Ng
IPC分类号： H02M7/537
CPC分类号： H02M7/49 , H02M2001/0022
摘要： An inverter system for inverting variable input DC and providing therefrom controlled output AC including a feedforward sensor for sensing a variable parameter of the input DC, a feedback AC sensor for sensing the controlled output AC and an inverter controller responsive to the variable parameter of the input DC and to the controlled output AC for regulating the magnitude of the controlled output AC.
摘要翻译：一种逆变器系统，用于反转可变输入DC并从其提供受控输出AC，其包括用于感测输入DC的可变参数的前馈传感器，用于感测受控输出AC的反馈AC传感器和响应于输入的可变参数的逆变器控制器 DC和控制输出AC，用于调节受控输出AC的幅度。

4. 发明授权

US4695933A Multiphase DC-DC series-resonant converter 失效
标题翻译：多相DC-DC串联谐振变换器
公开(公告)号：US4695933A
公开(公告)日：1987-09-22
申请号：US700449
申请日：1985-02-11
申请人： Vietson M. Nguyen , P. John Dhyanchand , Pierre Thollot
发明人： Vietson M. Nguyen , P. John Dhyanchand , Pierre Thollot
IPC分类号： H02J1/10 , H02M3/28 , H02M3/335
CPC分类号： H02M3/285 , H02J1/102
摘要： Prior DC-DC converters of the resonant type often require the use of parallel-connected power switches to provide adequate current levels and further require large input and output filters. However, parallel operation of switching devices encounters the problem of current sharing and large filters are disadvantageous from a size and weight standpoint. Such problems are overcome by the DC-DC converter of the present invention which includes a plurality of subconverters having outputs which are combined to produce the output power. Each subconverter includes an inverter and a rectifier for developing a full wave rectified output having a ripple component therein. The subconverters are operated so that a phase displacement of 2.pi./N electrical degrees exists in the output current from one subconverter relative to the output current from other subconverters. The combined output therefore comprises a ripple component superimposed on a DC level, with the ripple component having a smaller amplitude and a greater frequency than the ripple component supplied by prior converters providing the same DC output level. The reduced ripple amplitude and increased frequency result in a reduction in size of the input and output filters. Further, since each subconverter handles only a portion of the total output power, parallel-connected switching devices need not be used.
摘要翻译：谐振型的先前的DC-DC转换器通常需要使用并联的功率开关来提供足够的电流水平，并且还需要大的输入和输出滤波器。然而，开关器件的并联操作遇到电流共享的问题，并且大尺寸和重量方面的大滤波器是不利的。本发明的DC-DC转换器克服了这些问题，该DC-DC转换器包括多个具有被组合以产生输出功率的输出的子转换器。每个子转换器包括逆变器和整流器，用于开发其中具有纹波分量的全波整流输出。子转换器被操作，使得来自一个子转换器的输出电流相对于来自其它次级转换器的输出电流存在2pI / N电度的相位偏移。因此，组合输出包括叠加在DC电平上的纹波分量，其中纹波分量具有比由提供相同DC输出电平的现有转换器提供的纹波分量更小的振幅和更大的频率。纹波幅度减小和频率增加导致输入和输出滤波器的尺寸减小。此外，由于每个子转换器仅处理总输出功率的一部分，因此不需要使用并联的开关装置。

5. 发明授权

US4694383A Controller for a resonant converter 失效
标题翻译：谐振转换器的控制器
公开(公告)号：US4694383A
公开(公告)日：1987-09-15
申请号：US907581
申请日：1986-09-15
申请人： Vietson M. Nguyen , P. John Dhyanchand
发明人： Vietson M. Nguyen , P. John Dhyanchand
IPC分类号： H02M3/28 , H02M3/335 , H02M3/337
CPC分类号： H02M3/3376 , Y02B70/1433 , Y02P80/112
摘要： A controller for a resonant DC/DC converter having at least one power switch which is controlled to develop intermediate AC power in a resonant circuit includes means for developing a signal representing the current in the resonant circuit, an integrator having an input coupled to the developing means for integrating the signal developed thereby and a multiplier having a first input coupled to an output of the integrator and further having a second input and an output at which is developed a multiplied signal. A comparator is coupled to the output of the multiplier for comparing the multiplied signal at such output against a reference signal and a frequency-to-voltage converter is coupled between the output of the comparator and a second input of the multiplier for developing a feedback signal which is multiplied by the multiplier with the output of the integrator to derive the multiplied signal. The comparator develops signals which control the switch in the resonant converter so that static and dynamic stability is improved.
摘要翻译：一种用于谐振DC / DC转换器的控制器，具有被控制以在谐振电路中产生中间AC电力的至少一个电源开关包括用于开发表示谐振电路中的电流的信号的装置，具有耦合到显影用于对由此开发的信号进行积分的装置和具有耦合到积分器的输出的第一输入的乘法器，并且还具有第二输入和在其上产生相乘的信号的输出。比较器耦合到乘法器的输出端，用于将这种输出处的相乘信号与参考信号进行比较，并且频率 - 电压转换器耦合在比较器的输出端和乘法器的第二输入端之间，用于产生反馈信号其乘以乘法器与积分器的输出以导出相乘的信号。比较器产生控制谐振转换器中的开关的信号，从而提高静态和动态稳定性。

6. 发明授权

US5666278A High voltage inverter utilizing low voltage power switches 失效
标题翻译：高压变频器采用低压电源开关
公开(公告)号：US5666278A
公开(公告)日：1997-09-09
申请号：US299730
申请日：1994-09-01
申请人： Chai-Nam Ng , P. John Dhyanchand , Vietson M. Nguyen
发明人： Chai-Nam Ng , P. John Dhyanchand , Vietson M. Nguyen
IPC分类号： H02M7/48 , H02M7/49 , H02M7/00
CPC分类号： H02M7/49
摘要： An inverter includes first and second subinverters each having inputs connected in series with the input of the other subinverter across a DC voltage and each further having a switch coupled to an output. A summing circuit includes a first input coupled to the output of the first subinverter, a second input coupled to the output of second inverter and an output. A control circuit is coupled to the subinverters and operates the switches such that a summed AC waveform is produced at the output of the summing circuit. Each switch is subjected to only a portion of the DC voltage.
摘要翻译：逆变器包括第一和第二子变换器，每个子变换器具有跨越DC电压与另一个次级逆变器的输入串联连接的输入，并且每个还具有耦合到输出的开关。求和电路包括耦合到第一次级逆变器的输出的第一输入，耦合到第二反相器的输出的第二输入和输出。控制电路耦合到次级逆变器并操作开关，使得在求和电路的输出端产生总和的交流波形。每个开关仅受直流电压的一部分的影响。

7. 发明授权

US5282125A Power generation system with soft-start circuit 失效
标题翻译：具有软启动电路的发电系统
公开(公告)号：US5282125A
公开(公告)日：1994-01-25
申请号：US882391
申请日：1992-05-13
申请人： P. John Dhyanchand , Chai-Nam Ng , Sunil Patel , Vietson M. Nguyen
发明人： P. John Dhyanchand , Chai-Nam Ng , Sunil Patel , Vietson M. Nguyen
IPC分类号： H02M1/00 , H02M1/36 , H02M7/48 , H02M7/49 , H02M7/5375 , H02M7/5387
CPC分类号： H02M7/49 , H02M1/36 , Y10S323/908
摘要： Control pulses having a first frequency are supplied to the switches of an inverter by a controller. During initial operation of the inverter, however, a softstart circuit supplied pulses to the inverter switches of the inverter wherein the soft-start pulses have a second frequency. The second frequency is constant and higher than the first frequency.
摘要翻译：具有第一频率的控制脉冲由控制器提供给逆变器的开关。然而，在逆变器的初始操作期间，软启动电路向逆变器开关提供脉冲，其中软启动脉冲具有第二频率。第二频率恒定并高于第一频率。

8. 发明授权

US08427108B2 Method for controlling an electric accumulator unit 有权
标题翻译：蓄电装置的控制方法
公开(公告)号：US08427108B2
公开(公告)日：2013-04-23
申请号：US12859368
申请日：2010-08-19
申请人： Josh C. Swenson , Vietson M. Nguyen
发明人： Josh C. Swenson , Vietson M. Nguyen
IPC分类号： H02J7/00 , H02J9/06 , H01M10/44
CPC分类号： H02J7/34 , Y10T307/527
摘要： A power system has a generator, a variable load, and an electrical accumulator unit. The electrical accumulator unit stores power when the generator generates excess power, and supplements power from the generator when the generator generates insufficient power.
摘要翻译：电力系统具有发电机，可变负载和蓄电单元。当发电机产生过量电力时，蓄电单元存储电力，并且当发电机产生不足的电力时，补充发电机的电力。

9. 发明申请

US20100283415A1 Motor Drive System with Flux Regulated PM Generator 有权
标题翻译：带磁通调节型PM发电机的电机驱动系统
公开(公告)号：US20100283415A1
公开(公告)日：2010-11-11
申请号：US12437732
申请日：2009-05-08
申请人： Gregory I. Rozman , Vietson M. Nguyen , Jacek F. Gieras
发明人： Gregory I. Rozman , Vietson M. Nguyen , Jacek F. Gieras
IPC分类号： H02P31/00
CPC分类号： H02P9/30
摘要： A method of generating and controlling power for an alternating current (AC) motor by means of at least one controlled permanent magnet machine (PMM) with a permanent magnet (PM) rotor and a stator with a magnetic flux diverter circuit for controlling the output of the PMM, comprises the steps of: rotating the PM rotor at a velocity sufficient to develop a high frequency alternating current (HFAC) power output from the stator; transforming the HFAC output to produce a variable low frequency alternating current (AC) motor control output for the motor; sensing desired motor control parameters; generating a control signal responsive to the sensed parameters; and applying the control signal to the magnetic flux diverter circuit to control the motor control output.
摘要翻译：一种通过至少一个具有永磁（PM）转子的受控永久磁铁机（PMM）和具有磁通转向器电路的定子来产生和控制交流（AC）电动机的电力的方法，所述磁控转子电机用于控制输出 PMM包括以下步骤：以足以产生从定子输出的高频交流（HFAC）功率的速度旋转PM转子; 转换HFAC输出，为电机产生可变低频交流（AC）电机控制输出; 感测所需的电动机控制参数; 响应于所感测的参数产生控制信号; 并将控制信号施加到磁通转向器电路以控制电动机控制输出。

10. 发明授权

US07365511B2 Methods to control high speed electric machines having a front-end EMI filter attached 有权
标题翻译：控制带有前端EMI滤波器的高速电机的方法
公开(公告)号：US07365511B2
公开(公告)日：2008-04-29
申请号：US11519748
申请日：2006-09-12
申请人： Vietson M. Nguyen
发明人： Vietson M. Nguyen
IPC分类号： G05B5/01
CPC分类号： H02P21/14
摘要： A system and method for extracting estimated input voltage and input current values of an AC motor based on sensed power inverter output voltage and output current when the AC motor is connected to a front-end EMI filter and the EMI filter is connected to a power inverter. Where the system includes a current estimator portion, and a voltage estimator portion. The estimated input values are used by a feedback controller in the power inverter to control the motor. A second system and method for extracting estimated an input current of an AC motor based on the actual motor input voltage, and the output voltage of the power inverter.
摘要翻译：一种用于当交流电动机连接到前端EMI滤波器并且EMI滤波器连接到电力逆变器时，基于感测的功率逆变器输出电压和输出电流来提取AC电动机的估计输入电压和输入电流值的系统和方法。其中系统包括电流估计器部分和电压估计器部分。估计的输入值由电力逆变器中的反馈控制器用于控制电机。用于根据实际的电动机输入电压和电力逆变器的输出电压来提取AC电动机的输入电流的第二系统和方法。

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