Buck/boost method of voltage regulation for a permanent magnet generator (PMG)
    91.
    发明申请
    Buck/boost method of voltage regulation for a permanent magnet generator (PMG) 失效
    永磁发电机(PMG)调压降压/升压方法

    公开(公告)号:US20070194762A1

    公开(公告)日:2007-08-23

    申请号:US11788953

    申请日:2007-04-23

    CPC classification number: H02P9/48 H02P2101/30 H02P2201/09 H02P2201/11

    Abstract: The output voltage generated by permanent magnet generator (PMG) is regulated by controlling a buck/boost voltage applied to selected sub-coils within the PMG. The PMG includes a number of stator coils that are each divided into a number of sub-coils. A buck/boost voltage source generates a buck/boost voltage, and a controller connected to monitor the output voltage generated by the PMG selectively applies the buck/boost voltage to selected sub-coils based on the monitored output voltage. In this way, the controller is able to regulate the output voltage by selectively controlling the buck/boost voltage applied to the selected sub-coils.

    Abstract translation: 由永磁发电机(PMG)产生的输出电压通过控制施加到PMG内选定子线圈的降压/升压电压来调节。 PMG包括多个定子线圈,每个定子线圈被分成多个子线圈。 降压/升压电压源产生降压/升压电压,并且连接以监视PMG产生的输出电压的控制器基于监视的输出电压选择性地将降压/升压电压施加到所选择的子线圈。 以这种方式,控制器能够通过选择性地控制施加到所选择的子线圈的降压/升压电压来调节输出电压。

    Variable speed drive for a chiller system
    92.
    发明授权
    Variable speed drive for a chiller system 有权
    冷却器系统的变速驱动

    公开(公告)号:US07208891B2

    公开(公告)日:2007-04-24

    申请号:US11123685

    申请日:2005-05-06

    CPC classification number: H02P27/08 B60H1/00428 H02P2201/09 Y02T10/88

    Abstract: A variable speed drive with a boost converter is provided for a chiller system driven by an induction motor. The boost converter can be a diode or thyristor rectifier followed by a boost DC/DC converter or a three-phase pulse width modulated boost converter. The boost converter provides a boosted voltage to the DC link, which results in a boosted voltage being applied to the induction motor by the inverter of the variable speed drive.

    Abstract translation: 具有升压转换器的变速驱动器用于由感应电动机驱动的冷却器系统。 升压转换器可以是二极管或晶闸管整流器,后面是升压型DC / DC转换器或三相脉宽调制升压转换器。 升压转换器为直流链路提供升压电压,这导致升压电压由变频驱动器的逆变器施加到感应电动机。

    Variable speed drive for a chiller system
    93.
    发明申请
    Variable speed drive for a chiller system 有权
    冷却器系统的变速驱动

    公开(公告)号:US20060250107A1

    公开(公告)日:2006-11-09

    申请号:US11123685

    申请日:2005-05-06

    CPC classification number: H02P27/08 B60H1/00428 H02P2201/09 Y02T10/88

    Abstract: A variable speed drive with a boost converter is provided for a chiller system driven by an induction motor. The boost converter can be a diode or thyristor rectifier followed by a boost DC/DC converter or a three-phase pulse width modulated boost converter. The boost converter provides a boosted voltage to the DC link, which results in a boosted voltage being applied to the induction motor by the inverter of the variable speed drive.

    Abstract translation: 具有升压转换器的变速驱动器用于由感应电动机驱动的冷却器系统。 升压转换器可以是二极管或晶闸管整流器,后面是升压型DC / DC转换器或三相脉宽调制升压转换器。 升压转换器为直流链路提供升压电压,这导致升压电压由变频驱动器的逆变器施加到感应电动机。

    Circuitry and related control method for an electric or hybrid vehicle with two direct current sources

    公开(公告)号:US20060226703A1

    公开(公告)日:2006-10-12

    申请号:US11399757

    申请日:2006-04-07

    Inventor: Dejan Schreiber

    Abstract: Proposed is a circuitry and a related control mechanism for a vehicle with electric drive only or for a vehicle with hybrid drive comprised of an electric and a combustion motor. This circuitry has a multi-phase machine and two direct current units. Furthermore, an arrangement of power semiconductor components, in two converters in bridge arrangement of two semiconductor switches whose respective alternating current connections are connected in phase direction and to the connections of the multi-phase machine. The negative polarity connections of the two direct current units and the two converters are also connected to each other, the positive polarity connection of the first direct current unit is connected to the positive connection of the first convert by means of a flow control valve and the positive polarity connection of the second direct current unit is connected to the positive connection of the second converter by means of a flow control valve. Furthermore, a method is described for quasi-simultaneously supplying a multi-phase machine in motor operation from both direct current units and for supplying a first direct current unit from a second direct current unit with lower output voltage than the first one.

    Compact electrical power supply for signal processing applications
    96.
    发明授权
    Compact electrical power supply for signal processing applications 失效
    用于信号处理应用的紧凑型电源

    公开(公告)号:US4533986A

    公开(公告)日:1985-08-06

    申请号:US547376

    申请日:1983-10-31

    Inventor: Dwight V. Jones

    Abstract: The present invention relates to a compact electrical power supply which derives electrical energy from a low frequency medium voltage source (e.g. a 120 V 60 Hz ac main), and converts the electrical energy to a low voltage format suitable for solid state signal processing equipment. The supply entails in succession bridge rectification means, a dc-dc boost converter, a capacitor storage bank, and a half bridge converter, either resonantly or non-resonantly operated. The converters operate at frequencies substantially above audible frequencies in the interests of compactness. The design provides a high input power factor (inductive) with minimum EMT, and provides a lengthened voltage hold up after loss of power.

    Abstract translation: 本发明涉及一种从低频中压电源(例如120V 60Hz交流主电源)获得电能并将电能转换成适合于固态信号处理设备的低电压格式的紧凑型电源。 供应需要串联整流装置,直流 - 直流升压转换器,电容器存储体和半桥转换器,可以共振或非共振操作。 为了紧凑性,转换器以大致高于可听频率的频率工作。 该设计提供了具有最小EMT的高输入功率因数(电感),并且在断电后提供延长的电压保持。

    Electric motor control device
    97.
    发明授权

    公开(公告)号:US11757395B2

    公开(公告)日:2023-09-12

    申请号:US17390384

    申请日:2021-07-30

    Abstract: An electric motor control device includes an electronic control unit configured to perform switching control of a switching element of an inverter in PWM control mode when a modulation degree is less than a first predetermined value, perform switching control of the switching element in square wave control mode when the modulation degree is greater than or equal to a second predetermined value, and perform switching control of the switching element in intermediate control mode when the modulation degree is greater than or equal to the first predetermined value and less than the second predetermined value. The intermediate control mode uses a switching pattern in which, in a pulse pattern in the square wave control mode, a slit or a short pulse having the same width as the slit is formed according to whether a pulse is present at the time when a phase current crosses zero.

    Variable speed motor drive with integrated motor heating systems and methods

    公开(公告)号:US11699972B2

    公开(公告)日:2023-07-11

    申请号:US16549181

    申请日:2019-08-23

    Abstract: The present disclosure includes techniques for implementing a variable speed drive (VSD) in an environmental conditioning system to facilitate mitigating or eliminating system faults. The variable speed drive drives a motor during on-cycles and heats motor windings of the motor during off-cycles. The variable speed motor drive includes a rectifier that converts alternative-current (AC) power input to a direct-current (DC) power output, a DC bus that is coupled to the rectifier and includes a DC bus transistor, and an inverter. The DC bus transistor pre-charges a DC capacitor of the DC bus to drive the motor during on-cycles and receives a gate pulse with a duty cycle based on a differential temperature, where the gate pulse heats the motor windings. The inverter receives the gate pulse applied to the DC bus transistor and transmits it a motor winding to prevent moisture on the motor winding.

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