Speed control of multiple components in refrigerant systems
    93.
    发明授权
    Speed control of multiple components in refrigerant systems 有权
    制冷剂系统中多个部件的速度控制

    公开(公告)号:US07836713B2

    公开(公告)日:2010-11-23

    申请号:US11995117

    申请日:2005-07-29

    IPC分类号: F25D17/00 F25B49/00

    摘要: Variable speed drives are utilized in refrigerant systems to operate motors of the system components at varying speeds, typically for the purposes of capacity adjustment, efficiency enhancement, reliability improvement or power consumption limitation. However, variable speed controls are expensive. The present invention offers flexibility to utilize a variable speed drive to provide variable speed functionality between compressor and fans (or other rotating components having electric motors) within a refrigerant system depending on operational and environmental conditions and external load demands. The switching device switches the variable speed drive between component motors as indicated by a control for the refrigerant system.

    摘要翻译: 变速驱动器用于制冷系统中,以变化的速度运行系统组件的电动机,通常用于容量调整,效率提高,可靠性改进或功耗限制。 然而,变速控制是昂贵的。 本发明提供了灵活性,以利用变速驱动器来根据操作和环境条件和外部负载需求在压缩机和风扇(或具有电动机的其它旋转部件)之间提供变速功能。 开关装置如在制冷剂系统的控制器所指示的那样在组件电动机之间切换变速驱动器。

    System and method to extend synchronous operation of an active converter in a variable speed drive
    94.
    发明授权
    System and method to extend synchronous operation of an active converter in a variable speed drive 有权
    扩展变频器中有源转换器的同步运行的系统和方法

    公开(公告)号:US07764041B2

    公开(公告)日:2010-07-27

    申请号:US11932280

    申请日:2007-10-31

    IPC分类号: H02P27/04

    摘要: Systems and methods for synchronous operation of variable speed drives having active converters include extending the synchronous operation of an active converter to the AC mains voltage during complete line dropout. A phase angle control circuit includes a squaring amplifier, a first phase-lock loop circuit associated and a second phase-lock loop circuit. The squaring amplifier receives the AC power source and outputs a rectangular output signal to a pair of phase lock loop (PLL) circuits. The first PLL circuit with a first lag-lead filter is configured with a high cutoff frequency to provide the converter stage with a phase angle parameter; and the second phase-lock loop circuit including a second lag-lead filter configured to have a low cutoff frequency to provide the lag-lead filter the capability of storing the phase angle of the mains voltage during mains interruption.

    摘要翻译: 具有有源转换器的变速驱动器的同步操作的系统和方法包括在完整的线路断开期间将有源转换器的同步操作扩展到AC电源电压。 相位角控制电路包括平方放大器,相关的第一锁相环电路和第二锁相环电路。 平方放大器接收交流电源,并向一对锁相环(PLL)电路输出矩形输出信号。 具有第一滞后引线滤波器的第一PLL电路配置有高截止频率,以向转换器级提供相位角参数; 并且所述第二锁相环电路包括被配置为具有低截止频率的第二滞后引线滤波器,以提供所述滞后引线滤波器在电源中断期间存储所述电源电压的相位角的能力。

    Refrigerant system with multi-speed scroll compressor and economizer circuit
    96.
    发明授权
    Refrigerant system with multi-speed scroll compressor and economizer circuit 有权
    具有多速涡旋压缩机和节能器回路的制冷系统

    公开(公告)号:US07721562B2

    公开(公告)日:2010-05-25

    申请号:US11302909

    申请日:2005-12-14

    IPC分类号: F25B41/00 F25B49/00 F25B1/00

    摘要: A scroll compressor is provided with a multiple-speed motor. A control selects a speed for operating the motor, along with selecting between several available options for the system capacity adjustment to meet external load demands in a most efficient and reliable manner. The disclosed embodiment includes an economizer circuit, an unloader function, and an optional suction modulation valve. By utilizing each of these features in combination with the multi-speed motor for the compressor, the present invention is better able to tailor provided capacity to desired capacity.

    摘要翻译: 涡旋压缩机设有多速电机。 控制器选择用于操作电机的速度,以及选择几个可用选项进行系统容量调整,以最有效和可靠的方式满足外部负载需求。 所公开的实施例包括节能器电路,卸载器功能和可选的抽吸调节阀。 通过将这些特征中的每一个与用于压缩机的多速电动机结合使用,本发明能够更好地定制提供的所需容量的容量。

    REFRIGERANT SYSTEM WITH MULTI-SPEED SCROLL COMPRESSOR AND ECONOMIZER CIRCUIT
    98.
    发明申请
    REFRIGERANT SYSTEM WITH MULTI-SPEED SCROLL COMPRESSOR AND ECONOMIZER CIRCUIT 有权
    具有多级滚动压缩机和经济型电路的制冷系统

    公开(公告)号:US20100003151A1

    公开(公告)日:2010-01-07

    申请号:US12560479

    申请日:2009-09-16

    IPC分类号: F01C1/04

    摘要: A scroll compressor is provided with a multiple-speed motor. A control selects a speed for operating the motor, along with selecting between several available options for the system capacity adjustment to meet external load demands in a most efficient and reliable manner. The disclosed embodiment includes an economizer circuit, an unloader function, and an optional suction modulation valve. By utilizing each of these features in combination with the multi-speed motor for the compressor, the present invention is better able to tailor provided capacity to desired capacity.

    摘要翻译: 涡旋压缩机设有多速电机。 控制器选择用于操作电机的速度,以及选择几个可用选项进行系统容量调整,以最有效和可靠的方式满足外部负载需求。 所公开的实施例包括节能器电路,卸载器功能和可选的抽吸调节阀。 通过将这些特征中的每一个与用于压缩机的多速电动机结合使用,本发明能够更好地定制提供的所需容量的容量。

    COMPRESSOR POWER CONTROL
    99.
    发明申请
    COMPRESSOR POWER CONTROL 审中-公开
    压缩机功率控制

    公开(公告)号:US20090314018A1

    公开(公告)日:2009-12-24

    申请号:US12303208

    申请日:2006-06-15

    摘要: Cooling is provided to the power electronics of a compressor speed control system by way of refrigerant that is routed from a refrigeration system, through the power electronics, and then back to the refrigeration system. The amount of refrigerant flowing to the power electronics is automatically regulated to that needed to cool the electronics since both are substantially proportional to compressor speed. The housing for the power electronics is mounted directly to the side of the compressor, and the compressor is resiliently mounted to a support to thereby provide shock protection to the power electronics.

    摘要翻译: 通过制冷剂从压缩机速度控制系统提供冷却,制冷剂通过制冷系统,电力电子设备,然后回到制冷系统。 流到电力电子设备的制冷剂的量自动调节到冷却电子设备所需的制冷剂量,因为它们都基本上与压缩机速度成比例。 用于电力电子设备的壳体直接安装在压缩机的侧面,并且压缩机弹性地安装到支撑件上,从而为电力电子设备提供冲击保护。

    System for precharging a DC link in a variable speed drive
    100.
    发明授权
    System for precharging a DC link in a variable speed drive 失效
    用于对变频驱动器中的直流母线进行预充电的系统

    公开(公告)号:US07555912B2

    公开(公告)日:2009-07-07

    申请号:US11073830

    申请日:2005-03-07

    IPC分类号: H02P27/04

    摘要: A variable speed drive with a converter that is controllable to precharge a DC link is provided. The variable speed drive also includes an inverter. The converter converts a fixed line frequency, fixed line voltage AC power from an AC power source into DC power. The DC link filters the DC power from the converter. Finally, the inverter is connected in parallel with the DC link and converts the DC power from the DC link into a variable frequency, variable voltage AC power. The converter includes a plurality of pairs of power switches, wherein each pair of power switches includes a reverse blocking power switch connected in anti-parallel to another reverse blocking power switch. Alternatively, each pair of power switches includes a reverse blocking power switch connected in anti-parallel with a silicon carbide controlled rectifier.

    摘要翻译: 提供了具有可控制以对DC链路进行预充电的转换器的变速驱动器。 变频器还包括一个逆变器。 该转换器将固定线路频率,交流电源的固定线路电压AC电源转换为直流电源。 直流链路过滤掉转换器的直流电源。 最后,逆变器与直流母线并联连接,将直流母线的直流电源转换成变频,可变电压交流电源。 该转换器包括多对电力开关,其中每对功率开关包括与另一个反向阻断功率开关反并联连接的反向阻断功率开关。 或者,每对功率开关包括与碳化硅控制的整流器反并联连接的反向阻断功率开关。