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1. 发明授权

US06850426B2 Synchronous and bi-directional variable frequency power conversion systems 失效
标题翻译：同步和双向变频电力转换系统
公开(公告)号：US06850426B2
公开(公告)日：2005-02-01
申请号：US10404513
申请日：2003-04-01
申请人： Hassan A. Kojori , Jack Daming Ma , Zheng Wang , George You Zhou
发明人： Hassan A. Kojori , Jack Daming Ma , Zheng Wang , George You Zhou
IPC分类号： H02M7/12 , H02M3/00 , H02M3/335 , H02M7/00 , H02M7/219
CPC分类号： H02M7/797 , H02P23/0004
摘要： A synchronous bi-directional active power conditioning system (11) suitable for wide variable frequency systems or active loads such as adjustable speed drives which require variable voltage variable frequency power management systems is disclosed. Common power electronics building blocks (100, 200) (both hardware and software modular blocks) are presented which can be used for AC-DC, DC-AC individually or cascaded together for AC-DC-AC power conversion suitable for variable voltage and/or wide variable frequency power management systems. A common control software building block (2, 5) includes a digital control strategy/algorithm and digital phase lock loop method and apparatus which are developed and implemented in a digital environment to provide gating patterns for the switching elements (3, 6) of the common power-pass modular power electronics building blocks (100, 200).
摘要翻译：公开了一种适用于宽变频系统或有源负载的同步双向有源功率调节系统（11），例如需要可变电压可变频率功率管理系统的可变速驱动器。提供了共同的电力电子构件（100,200）（硬件和软件模块化块），可以单独用于AC-DC，DC-AC或级联在一起用于适用于可变电压和/ 或宽变频电源管理系统。公共控制软件构建块（2,5）包括在数字环境中开发和实现的数字控制策略/算法和数字锁相环方法和装置，以提供开关元件（3,6）的门控模式公共电力通模块电力电子组件（100,200）。

2. 发明授权

US07116067B2 Power converter controlling apparatus and method providing ride through capability during power interruption in a motor drive system 失效
公开(公告)号：US07116067B2
公开(公告)日：2006-10-03
申请号：US10979348
申请日：2004-11-02
申请人： Jack Daming Ma , George You Zhou , Zheng Wang
发明人： Jack Daming Ma , George You Zhou , Zheng Wang
IPC分类号： H02P3/18 , H02P1/00
CPC分类号： H02P6/24 , H02P6/08 , H02P23/0004 , H02P29/025
摘要： A method of controlling a power converter (20) of a motor drive system (10)controls the power converter (20) during a first operating mode by applying a current control scheme, which sets power converter commands to control torque current flowing from the power converter (20) to the motor (30) to achieve desired motor speed; and initiates a second operating mode when power supply to the power converter (20) is interrupted. The second operating mode includes controlling negative torque current between the power converter (20) and the motor (30) so that mechanical energy from the motor (30) charges an element (58) on a power supply side of the power converter (20). The first operating mode is resumed when the input power recovers. Torque current between the power converter (20) and the motor (30) is also controlled to limit a maximum transient DC bus voltage.

3. 发明授权

US07375934B2 Power converter controlling apparatus and method applying a fault protection scheme in a motor drive system 失效
标题翻译：在电机驱动系统中应用故障保护方案的电力变换器控制装置和方法
公开(公告)号：US07375934B2
公开(公告)日：2008-05-20
申请号：US10944199
申请日：2004-09-20
申请人： Zheng Wang , Jack Daming Ma , George You Zhou
发明人： Zheng Wang , Jack Daming Ma , George You Zhou
IPC分类号： H02H5/04
CPC分类号： H02P29/02
摘要： A method and apparatus control a power converter (20) of a motor drive system. The power converter (20) is controlled during a first operating mode by applying a current control scheme, which sets power converter commands to control active and reactive current components flowing from the power converter (20) to the motor (30) to achieve desired motor speed; and a fault protection scheme is executed during a second operating mode. The fault protection scheme generates power converter commands to reduce the active current component flowing from the power converter (20) to the motor (30) is substantially zero. The first operating mode will be resumed upon receiving the restart command if the motor speed is above a pre-set shutdown threshold.
摘要翻译：一种控制电机驱动系统的功率转换器（20）的方法和装置。功率转换器（20）在第一操作模式期间通过施加电流控制方案来控制，该电流控制方案设置功率转换器命令以控制从功率转换器（20）流向电动机（30）的有功和无功电流分量，以实现期望的电动机速度; 并且在第二操作模式期间执行故障保护方案。故障保护方案产生功率转换器命令以减少从功率转换器（20）流向电机（30）的有效电流分量基本为零。如果电机转速高于预设的关机阈值，则在接收到重启命令后，第一个运行模式将被恢复。

4. 发明授权

US06965212B1 Method and apparatus for field weakening control in an AC motor drive system 失效
标题翻译：交流电机驱动系统中弱磁控制的方法和装置
公开(公告)号：US06965212B1
公开(公告)日：2005-11-15
申请号：US10998721
申请日：2004-11-30
申请人： Zheng Wang , Jack Daming Ma , George You Zhou
发明人： Zheng Wang , Jack Daming Ma , George You Zhou
IPC分类号： H02P21/00 , H02P21/06 , H02P5/28
CPC分类号： H02P21/06 , H02P21/22
摘要： A method and apparatus control a power converter (20) of an AC motor drive system (10). The method and apparatus: generate a field current regulating signal to control a field current component flowing from the power converter (20) to the AC motor (30), thereby achieving field current regulation; generate a torque current regulating signal to control a torque current component flowing from the power converter (20) to the AC motor (30), thereby achieving torque current regulation, the torque current regulation having lower priority than the field current regulation; and execute a close-loop field weakening control scheme, which generates a field weakening control command as a function of the difference between a torque current regulation voltage demand and voltage available for torque current regulation. The field current regulating signal is adjusted in accordance with the field weakening control signal to selectively reduce back EMF of the AC motor (30), thereby enabling the step of generating a toque current regulating signal to achieve a toque current component needed to drive the AC motor (30) at a desired speed despite a limitation on DC voltage available to the power converter (20).
摘要翻译：一种控制交流电动机驱动系统（10）的功率转换器（20）的方法和装置。该方法和装置：产生励磁电流调节信号，以控制从电力转换器（20）流向AC电动机（30）的励磁电流分量，从而实现励磁电流调节; 产生转矩电流调节信号，以控制从功率转换器（20）流向AC电动机（30）的转矩电流分量，从而实现转矩电流调节，转矩电流调节的优先级低于励磁电流调节; 并执行闭环弱磁控制方案，其产生弱磁控制指令作为转矩电流调节电压需求和可用于转矩电流调节的电压之间的差的函数。根据减弱弱磁控制信号调整励磁电流调节信号，以选择性地减小AC电动机（30）的反向EMF，从而使得能够产生变矩电流调节信号的步骤以实现驱动AC所需的转矩电流分量电动机（30）以期望的速度，尽管限制了可用于功率转换器（20）的直流电压。

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