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公开(公告)号：US07425806B2
公开(公告)日：2008-09-16
申请号：US10822489
申请日：2004-04-12
CPC分类号： H02M5/4585 , H02M2001/008
摘要： A variable speed drive is provided having a converter to convert an AC voltage to a DC voltage, a DC link to filter and store energy from the converter, and a plurality of inverters. Each inverter is configured to convert a DC voltage to an AC voltage and is electrically connected in parallel to the DC link. An interleaved pulse width modulation control technique is used to control the operation of the plurality of inverters and possibly the converter to lower the RMS ripple current in the DC link.
摘要翻译： 提供了一种变速驱动器，其具有将AC电压转换为DC电压的转换器，用于对来自转换器的能量进行滤波和存储的DC链路以及多个逆变器。 每个逆变器被配置为将DC电压转换为AC电压并且与DC链路并联电连接。 使用交错脉宽调制控制技术来控制多个逆变器的操作以及可能的转换器来降低DC链路中的RMS纹波电流。
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公开(公告)号：US08286439B2
公开(公告)日：2012-10-16
申请号：US12572883
申请日：2009-10-02
申请人： Zhiqiao Wu , Ivan Jadric , Michael S. Todd , Justin Drew Warner , Shreesha Adiga Manoor , Konstantin Borisov , Scott Victor Slothower , Kanishk Dubey , John C. Hansen
发明人： Zhiqiao Wu , Ivan Jadric , Michael S. Todd , Justin Drew Warner , Shreesha Adiga Manoor , Konstantin Borisov , Scott Victor Slothower , Kanishk Dubey , John C. Hansen
IPC分类号： F25B49/00
CPC分类号： H02P6/085 , F25B49/025 , F25B2600/0253 , Y02B30/741
摘要： A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive is arranged to receive an input AC power at a fixed AC input voltage and fixed input frequency and provide an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source providing the input AC voltage. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter. The DC link is arranged to filter and store the DC voltage from the converter. A first inverter and a second inverter are each connected to the DC link. A motor includes stator windings connected between the first inverter and the second inverter to power the motor by the output AC power from the first inverter and the second inverter. The motor is connectable to a compressor of the chiller system to power the compressor. The motor may be a permanent magnet synchronous motor.
摘要翻译： 用于冷却器系统的压缩机的驱动系统包括变速驱动器。 变速驱动器设置为以固定的AC输入电压和固定的输入频率接收输入AC电力，并以可变电压和可变频率提供输出AC电力。 变速驱动器包括连接到提供输入AC电压的AC电源的转换器。 该转换器被布置成将输入的AC电压转换成DC电压。 直流母线连接到转换器。 DC链路被布置为过滤和存储来自转换器的DC电压。 第一反相器和第二反相器各自连接到DC链路。 电动机包括连接在第一逆变器和第二逆变器之间的定子绕组，以通过来自第一逆变器和第二逆变器的输出AC电力为电动机供电。 电机可连接到冷却器系统的压缩机，为压缩机供电。 电动机可以是永磁同步电动机。
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公开(公告)号：US08258664B2
公开(公告)日：2012-09-04
申请号：US12572947
申请日：2009-10-02
申请人： Justin D. Warner , Ivan Jadric , Michael S. Todd , Zhiqiao Wu , Shreesha Adiga Manoor , Konstantin Borisov , Scott Victor Slothower , Kanishk Dubey , John C. Hansen
发明人： Justin D. Warner , Ivan Jadric , Michael S. Todd , Zhiqiao Wu , Shreesha Adiga Manoor , Konstantin Borisov , Scott Victor Slothower , Kanishk Dubey , John C. Hansen
IPC分类号： H02K21/00
CPC分类号： H02P6/085 , F25B49/025 , F25B2600/0253 , Y02B30/741
摘要： A hybrid motor for powering a compressor of a chiller system includes a first rotor portion and a first stator portion configured as a permanent magnet motor and a second rotor portion and a second stator portion configured as a reluctance motor. The second rotor portion includes a reluctance-type rotor, and the second stator portion includes electromagnetic windings capable of inducing a rotary magnetic field. The first rotor portion and the second rotor portion are attached to a common drive shaft. The reluctance motor is arranged to generate start-up torque and initiate rotation of the drive shaft until the drive shaft achieves a predetermined rotational speed. The permanent magnet motor is arranged to power the drive shaft between the predetermined rotational speed and a maximum rotational speed.
摘要翻译： 用于为制冷机系统的压缩机供电的混合式电动机包括第一转子部分和构造为永磁电动机的第一定子部分和被构造为磁阻电动机的第二转子部分和第二定子部分。 第二转子部分包括磁阻型转子，第二定子部分包括能够引起旋转磁场的电磁绕组。 第一转子部分和第二转子部分附接到公共驱动轴。 磁阻马达被布置成产生启动扭矩并且启动驱动轴的旋转，直到驱动轴达到预定旋转速度。 永磁电动机被布置成在预定转速和最大转速之间为驱动轴提供动力。
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公开(公告)号：US08193756B2
公开(公告)日：2012-06-05
申请号：US12572864
申请日：2009-10-02
申请人： Ivan Jadric , Zhiqiao Wu , Michael S. Todd , Justin Drew Warner , Shreesha Adiga Manoor , Konstantin Borisov , Scott Victor Slothower , Kanishk Dubey , John C. Hansen
发明人： Ivan Jadric , Zhiqiao Wu , Michael S. Todd , Justin Drew Warner , Shreesha Adiga Manoor , Konstantin Borisov , Scott Victor Slothower , Kanishk Dubey , John C. Hansen
CPC分类号： H02P6/085 , F25B49/025 , F25B2600/0253 , Y02B30/741
摘要： A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive is arranged to receive an input AC voltage at a fixed AC input voltage and provide an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source providing the input AC voltage. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter. The DC link filters and stores the DC voltage from the converter. An inverter is connected to the DC link. A motor connectable to the compressor for powering the compressor. An active filter connected in parallel with the motor. The active filter is arranged to generate high frequency currents having a magnitude and opposite polarity, with respect to the output AC power of the variable speed drive. The high frequency currents generated by active filter substantially cancel out high frequency currents flowing into the motor.
摘要翻译： 用于冷却器系统的压缩机的驱动系统包括变速驱动器。 变速驱动器设置为以固定的AC输入电压接收输入AC电压，并以可变电压和可变频率提供输出AC电力。 变速驱动器包括连接到提供输入AC电压的AC电源的转换器。 该转换器被布置成将输入的AC电压转换成DC电压。 直流母线连接到转换器。 直流链路过滤并存储转换器的直流电压。 逆变器连接到直流链路。 可连接到压缩机的电机为压缩机供电。 与电机并联连接的有源滤波器。 有源滤波器被布置成产生相对于变速驱动器的输出AC功率具有幅度和相反极性的高频电流。 由有源滤波器产生的高频电流基本抵消流入电动机的高频电流。
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公开(公告)号：US08353174B1
公开(公告)日：2013-01-15
申请号：US12572975
申请日：2009-10-02
申请人： Ivan Jadric , Zhiqiao Wu , Michael S. Todd , Justin Drew Warner , Shreesha Adiga Manoor , Konstantin Borisov , Scott Victor Slothower , Kanishk Dubey , John C. Hansen
发明人： Ivan Jadric , Zhiqiao Wu , Michael S. Todd , Justin Drew Warner , Shreesha Adiga Manoor , Konstantin Borisov , Scott Victor Slothower , Kanishk Dubey , John C. Hansen
CPC分类号： H02P6/085 , F25B49/025 , F25B2600/0253 , Y02B30/741
摘要： A chiller system is provided with a compressor, a condenser, and an evaporator connected in a closed refrigerant loop. A motor is connected to the compressor to power the compressor. A variable speed drive is connected to the motor. The variable speed drive is arranged to receive an input AC power at a fixed input AC voltage and a fixed input frequency and provide an output power at a variable voltage and variable frequency to the motor. The variable voltage has a maximum voltage greater in magnitude than the fixed input AC voltage and the variable frequency has a maximum frequency greater than the fixed input frequency. The variable speed drive includes a converter connected to an AC power source providing the input AC voltage, the converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter. The DC link is arranged to filter and store the DC voltage from the converter. An inverter is connected to the DC link. A controller is arranged to reference a first operating map associated with the compressor, a second operating map associated with the motor, and a third operating map associated with the variable speed drive. The controller further is arranged to analyze the first operating map second operating map and third operating map concurrently to select an operating point for the chiller system.
摘要翻译： 冷却器系统设置有连接在闭合制冷剂回路中的压缩机，冷凝器和蒸发器。 电动机连接到压缩机以为压缩机供电。 变速驱动器连接到电机。 变速驱动器被设置为以固定的输入AC电压和固定的输入频率接收输入AC电力，并且向电动机提供可变电压和可变频率的输出功率。 可变电压具有比固定输入AC电压更大的最大电压，并且可变频率具有大于固定输入频率的最大频率。 变速驱动器包括连接到提供输入AC电压的AC电源的转换器，转换器被布置成将输入AC电压转换为DC电压。 直流母线连接到转换器。 DC链路被布置为过滤和存储来自转换器的DC电压。 逆变器连接到直流链路。 控制器被布置为引用与压缩机相关联的第一操作图，与电动机相关联的第二操作图和与变速驱动器相关联的第三操作图。 控制器还被配置成同时分析第一操作图第二操作图和第三操作图以选择冷却器系统的操作点。
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公开(公告)号：US08336323B2
公开(公告)日：2012-12-25
申请号：US12572915
申请日：2009-10-02
申请人： Konstantin Borisov , Zhiqiao Wu , Michael S. Todd , Justin Drew Warner , Shreesha Adiga Manoor , Ivan Jadric , Scott Victor Slothower , Kanishk Dubey , John C. Hansen
发明人： Konstantin Borisov , Zhiqiao Wu , Michael S. Todd , Justin Drew Warner , Shreesha Adiga Manoor , Ivan Jadric , Scott Victor Slothower , Kanishk Dubey , John C. Hansen
IPC分类号： F25B49/00
CPC分类号： H02P6/085 , F25B49/025 , F25B2600/0253 , Y02B30/741
摘要： A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive receives an input AC power at a fixed input AC voltage and a fixed input frequency, and provides an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter and configured to filter and store the DC voltage from the converter. An inverter is connected to the DC link. A motor is connectable to the compressor for powering the compressor. A controller is arranged to control switching in the converter and the inverter. The controller is arranged to apply randomized pulse width modulation to vary the switching frequency of transistors in the converter and the inverter at each switching cycle. The motor may be a permanent magnet synchronous motor.
摘要翻译： 用于冷却器系统的压缩机的驱动系统包括变速驱动器。 变速驱动器以固定的输入交流电压和固定的输入频率接收输入的交流电力，并提供可变电压和可变频率的输出AC电力。 变速驱动器包括连接到AC电源的转换器。 该转换器被布置成将输入的AC电压转换成DC电压。 直流链路连接到转换器，并配置为对转换器的直流电压进行滤波和存储。 逆变器连接到直流链路。 电动机可连接到压缩机以为压缩机供电。 控制器被设置为控制转换器和逆变器中的开关。 控制器被布置为在每个开关周期中应用随机脉冲宽度调制以改变转换器和逆变器中的晶体管的开关频率。 电动机可以是永磁同步电动机。
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公开(公告)号：US07193826B2
公开(公告)日：2007-03-20
申请号：US10789327
申请日：2004-02-27
CPC分类号： H02H7/0833
摘要： A motor disconnect arrangement is provided for a variable speed drive having a plurality of inverters electrically connected in parallel to a DC link to power a plurality of motors. The disconnect arrangement includes a contactor or other disconnect device connected in series between each inverter output of the variable speed drive and its corresponding motor. The contactor operates to disconnect, isolate or remove the motor from the variable speed drive in the event of a failure of the motor. By removing a failed motor from the variable speed drive, the other motors connected to the variable speed drive can continue to operate normally.
摘要翻译： 为具有多个逆变器的变速驱动器提供电动机断开装置，该多个逆变器与DC连接并联电连接以对多个电动机供电。 断开装置包括在变速驱动器的每个逆变器输出端与其对应的电动机之间串联连接的接触器或其它断开装置。 如果电机出现故障，接触器操作以断开马达与变速驱动器的隔离或拆卸。 通过从变速驱动器中取出故障电机，连接到变频器的其他电机可以继续正常运行。
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