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    VARIABLE SPEED DRIVE WITH PULSE-WIDTH MODULATED SPEED CONTROL
    1.
    发明申请
    VARIABLE SPEED DRIVE WITH PULSE-WIDTH MODULATED SPEED CONTROL 有权
    具有脉冲宽度调制速度控制的变速驱动器

    公开(公告)号：US20100083693A1

    公开(公告)日：2010-04-08

    申请号：US12572915

    申请日：2009-10-02

    申请人： Michael S. Todd ,  Zhiqiao Wu ,  Kanishk Dubey ,  Justin Drew Warner ,  Konstantin Borisov ,  Scott V. Slothower ,  John C. Hansen ,  Ivan Jadric ,  Shreesha Adiga-Manoor

    发明人： Michael S. Todd ,  Zhiqiao Wu ,  Kanishk Dubey ,  Justin Drew Warner ,  Konstantin Borisov ,  Scott V. Slothower ,  John C. Hansen ,  Ivan Jadric ,  Shreesha Adiga-Manoor

    IPC分类号： F25B1/00 ,  H02P6/14 ,  H02K1/28

    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。

    Variable speed drive for permanent magnet motor
    2.
    发明授权
    Variable speed drive for permanent magnet motor 有权
    永磁电机变速驱动

    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。

    Variable speed drive with pulse-width modulated speed control
    3.
    发明授权
    Variable speed drive with pulse-width modulated speed control 有权
    具有脉宽调制速度控制的变速驱动

    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。

    Variable speed drive for permanent magnet motor
    4.
    发明授权
    Variable speed drive for permanent magnet motor 有权
    永磁电机变速驱动

    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

    IPC分类号： H02P7/00 ,  H02P27/00 ,  G05B5/01 ,  G05B11/01

    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。

    Control method for vapor compression system
    5.
    发明授权
    Control method for vapor compression system 有权
    蒸气压缩系统控制方法

    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

    IPC分类号： F25B1/00 ,  H02P25/00 ,  G05B13/02

    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。

    Permanent magnet synchronous motor and drive system
    6.
    发明授权
    Permanent magnet synchronous motor and drive system 有权
    永磁同步电机及驱动系统

    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。

    Medium voltage power controller
    7.
    发明授权
    Medium voltage power controller 有权
    中压电源控制器

    公开(公告)号：US08590329B2

    公开(公告)日：2013-11-26

    申请号：US13491120

    申请日：2012-06-07

    申请人： Dean K. Norbeck ,  John C. Hansen

    发明人： Dean K. Norbeck ,  John C. Hansen

    IPC分类号： F25B1/00

    CPC分类号： F25B49/025 ,  F25B2600/0253 ,  H02K5/225 ,  H02P1/28 ,  Y02B30/741

    摘要： A medium voltage power controller box is mounted on a chiller unit with the other components of the chiller system. The power controller box can be positioned on the chiller system unit to permit the power controller box to be close coupled to the motor, and specifically to the main motor lead exit hub without the need for any power conduit connections between the power controller box and the motor. In addition, the power controller box also does not require any control interface and receives controls from a control panel. A short conduit connection between the control panel and the power controller box is used to provide the necessary connections between the control panel and the power controller box.

    摘要翻译： 中压电源控制箱与冷却器系统的其他部件安装在冷却器单元上。 电源控制器盒可以位于冷却器系统单元上，以允许电源控制器盒与电机紧密耦合，特别是主电机引线出口集线器，而不需要电源控制器盒和电源控制器盒之间的任何电源管道连接 发动机。 此外，电源控制器盒也不需要任何控制接口并从控制面板接收控制。 控制面板和电源控制箱之间的短导管连接用于在控制面板和电源控制箱之间提供必要的连接。

    Control system for liquid chilled by an evaporator
    9.
    发明授权
    Control system for liquid chilled by an evaporator 失效
    由蒸发器冷却的液体控制系统

    公开(公告)号：US4584845A

    公开(公告)日：1986-04-29

    申请号：US750205

    申请日：1985-07-01

    申请人： John C. Hansen ,  Harold B. Ginder

    发明人： John C. Hansen ,  Harold B. Ginder

    IPC分类号： F25B49/02 ,  F25D17/02

    CPC分类号： F25B49/022

    摘要： To conserve energy in a large capacity refrigeration or air conditioning system, where liquid (usually water) is chilled by the system's evaporator and is then used to cool a building, the temperature setpoint of the chilled liquid leaving the evaporator may be reset upward from its desired level. Normally, if the temperature of the leaving chilled liquid falls below the setpoint by a fixed differential (such as 4.degree. F.) to a cut-out temperature, the system's compressor is shut down as a safety precaution to prevent freeze-ups. A nuisance compressor shutdown may be avoided when the setpoint is reset to a higher level (since the actual temperature of the leaving chilled liquid at that time may be at or below the desired setpoint and may be more than 4.degree. below the reset setpoint) by lowering the cut-out temperature to a fixed level substantially below the desired setpoint, such as down to 36.degree. F. By maintaining the cut-out temperature at its reset level for a limited time (for example, ten minutes), the refrigeration system will be allowed to stabilize at the higher reset setpoint, after which the cut-out temperature is re-established at its normal level of 4.degree. below the reset setpoint.

    摘要翻译： 为了节省大容量制冷或空调系统中的能源，其中液体（通常为水）被系统的蒸发器冷却，然后用于冷却建筑物，离开蒸发器的冷冻液体的温度设定点可以从其 期望水平。 通常，如果离开冷却液体的温度通过固定的差压（如4°F）下降到设定值以下，则系统的压缩机将作为安全预防措施进行关闭，以防止冻结。 当设定值重置到更高的水平时（由于此时离开的冷冻液体的实际温度可能处于或低于所需设定值，并且可能比复位设定值低4℃），可能会避免噪音压缩机停机 将切出的温度降低到基本上低于所需设定点（例如低至36°F）的固定水平。通过将切割温度保持在其复位水平有限的时间（例如十分钟），制冷系统 将允许在更高的复位设定值下稳定，此后，在其复位设定值以下4°的正常水平下重新建立切断温度。