| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Medium Voltage Land Connection for Marine Vessels | US11814992 | 2006-01-25 | US20090302687A1 | 2009-12-10 | Hans-Erhard Schmidt; Manfred Steinke; Dieter Wieck |
| A device for electrically connecting a polyphase ship distribution network to a polyphase land supply network includes a connection unit for connecting the land supply network. The connection unit is connected to a back-to-back link by way of an input transformer, the link having current converters that are interconnected via at least one direct current voltage circuit. An output transformer is connected downstream of the back-to-back link. The output voltage of the transformer lies between 5 and 50 kV. The output transformer can be connected to the ship distribution network via a single multi-phase interconnecting cable. | ||||||
| 122 | Static converter | US12320759 | 2009-02-04 | US20090196078A1 | 2009-08-06 | Rainer Gruber; Ulrich Halfmann; Marc Hiller; Wolfgang Recker |
| A static converter includes a current converter on the three-phase side and a current converter on the single-phase side, which are electrically conductively linked to one another on the DC voltage side, and which are respectively electrically conductively connected on the AC voltage side to a feeding three-phase network and a single-phase receiving network. According to an embodiment of the invention, one network-commutated current converter is provided as the current converter on the three-phase side, wherein the current converter on the single-phase side has two phase modules which are connected in parallel on the DC voltage side and whose current converter branches each have at least one two-pole subsystem. This results in a static converter which is simpler and costs less than a known static converter. | ||||||
| 123 | Method and system for producing controlled frequency power from a variable frequency power source | US10996678 | 2004-11-24 | US07369417B2 | 2008-05-06 | Nicolae A. Morcov; Cristian E. Anghel |
| A circuit producing power with controlled frequency from a variable frequency power source (14) includes an AC bus (20) connected to the variable frequency power source (14) and a plurality of load circuits, each load circuit including an AC input (24) and an AC output (26), an AC contactor (30) between the input (24) and output (26), a rectifier (32) between the AC contactor (30) and the output (26) and an inverter (34) between the rectifier (32) and the output (26). A method of producing power with controlled frequency is also disclosed. | ||||||
| 124 | Distributed system and methodology of electrical power regulation, conditioning and distribution on an aircraft | US10324632 | 2002-12-20 | US06778414B2 | 2004-08-17 | Jie Chang; Charles H. LeMond; Anhua Wang |
| A novel system and methodology of electrical power regulation, conditioning and distribution on an aircraft is disclosed. The system comprises an alternator adapted to directly connect to an engine on the aircraft and generate variable frequency AC power, a variable frequency AC bus coupled directly to the alternator, and at least one variable frequency AC load at low performance, coupled to the variable frequency AC bus. At least one bi-directional power converter may be coupled directly to the variable frequency AC bus and adapted to convert the variable frequency AC raw power to a fully regulated adjustable-frequency and adjustable-voltage power to control AC motors and other high performance variable frequency AC loads. A bi-directional power converter is coupled directly to the variable frequency AC bus and adapted to convert the variable frequency AC power generated by the alternator into constant frequency AC power. At least one constant frequency AC load is coupled to a constant frequency AC bus which is in turn coupled between the constant frequency AC load and the bi-directional power converter. A first bi-directional power bus controller is coupled between the bi-directional power converter and the constant frequency AC bus. The system further comprises an AC/DC bi-directional power converter coupled to a DC bus and at least one DC load coupled thereto. A second bi-directional power bus controller is coupled between the AC/DC power converter and the DC bus. The first and second bi-directional controllers provide for the selective and automatic reconfiguration of the flow of power through the system. A novel high-level subsystem interconnection architecture is also disclosed. | ||||||
| 125 | Interconnection system for transmitting power between electrical systems | US08828502 | 1997-03-31 | US06741485B1 | 2004-05-25 | Mark A. Runkle; Einar V. Larsen |
| An electrical interconnection system (100) comprises a variable frequency rotary transformer (102) and a control system (104). The control system (104) adjusts an angular position of the rotary transformer (102) so that measured power (P1) transferred from a first electrical system (22) to a second electrical system (24) matches an inputted order power (P0). The rotary transformer (102) comprises a rotor assembly (110) and a stator (112), with the control system (104) adjusting a time integral of rotor speed over time. The control system (104) includes a first control unit (107) and a second control unit (108). The first control unit (107) compares the input order power P0 to the measured power P1 to generate a requested angular velocity signal &ohgr;0. The second control unit (108) compares the requested angular velocity signal &ohgr;0 to a measured angular velocity signal &ohgr;r of the rotary transformer to generate a converter drive signal T0 to a torque control unit (106), thereby controlling the angular positioning (&thgr;r) of the rotor assembly (110) relative to the stator (112). In various embodiments, the torque control unit (106) is integrated in the rotor assembly (110) and stator (112) of the rotary transformer (102). | ||||||
| 126 | Envelope for slip-ring contacting members in high-power rotary current collector system | US09731879 | 2000-12-08 | US06472791B1 | 2002-10-29 | Robert Henry Rehder; Richard Kenneth Barton; James Harold Ferguson; Melvin George Johnson |
| An electrical current collector system (20) comprises a rotatable shaft (28) having at least one and preferably plural electrically conductive slip rings (27) mounted thereon. For each phase, a slip ring is paired with a fixed conducting ring assembly (44). The fixed conducting ring assembly forms an envelope within which slip ring-contacting members are situated. The slip ring-contacting members can take many forms, including brushes (240) or rollers (404). The fixed conducting ring assembly comprises a first conducting plate (200T) and a second conducting plate (200B) positioned parallel to one another to form a conductive ring channel (220) therebetween. The slip ring-contacting members (240, 404) are mounted in the conductive ring channel. An at least partially transparent wall (200W) extends between the first conductive plate and the second conductive plate of the fixed conducting ring assembly to further define the conductive ring channel and permit visual inspection of the slip ring-contacting members. An air flow gap (48) exists is preferably provided between the slip ring and the fixed conducting ring assembly. The envelope acts as an electrostatic shield or Faraday cage. The envelope is a high voltage envelope which puts the slip ring-contacting members and other components within the envelope at a same high voltage as the fixed conducting ring assembly. Each pair of fixed conducting ring assembly and slip ring is substantially enclosed in its own grounded compartment (57) for providing electromagnetic shielding. | ||||||
| 127 | Rotating variable frequency transformer with high voltage cables | US09824904 | 2001-04-04 | US06456021B1 | 2002-09-24 | Donald Gordon McLaren; Konrad Roman Weeber |
| A system for transferring power between a first electrical system and a second electrical system comprises a rotary transformer (105) comprising a rotor (110) having rotor windings and a stator (112) having stator windings. The windings of at least one of the rotor and the stator are high power cables utilized to obviate employment of a transformer between the one of the rotor and the stator and one of the first electrical system and the second electrical system. | ||||||
| 128 | Interconnection system for transmitting power between electrical systems | US09679437 | 2000-10-03 | US06356472B1 | 2002-03-12 | Mark A. Runkle; Einar V. Larsen |
| An electrical interconnection system (100) comprises a variable frequency rotary transformer (201) and a control system (104). The control system (104) adjusts an angular position of the rotary transformer (102) so that measured power (P1) transferred from a first electrical system (22) to a second electrical system (24) matches an inputted order power signal (P0). The controller limits the power requested by the power order signal based on measured voltages, e.g., the controller has a power-limit function which overrides the order power signal when a measured power exceeds a limit computed from the measured voltages. The limit function is a fraction of maximum theoretical power. | ||||||
| 129 | Phase modulated, resonant power converting high frequency link inverter/converter | US782755 | 1985-10-01 | US4661897A | 1987-04-28 | Ira J. Pitel |
| The invention relates to a power processing technique and device wherein a tank circuit is excited at resonance, in association with two phase modulated high frequency link converters in an arrangement wherein control of the operation is easily achieved even with operation at resonance. The tank circuit is series resonant and is connected on the primary side of a transformer between two full bridge inverters and serves to control operation of the device even when operated at resonance. The technique finds special utility in power conversion applications. | ||||||
| 130 | Asynchronous tie | US540748 | 1975-01-13 | US3975646A | 1976-08-17 | Lee A. Kilgore; Gurney L. Godwin; Eugene C. Whitney |
| Two cascaded induction machines provide asynchronous power transmission between two independent generating networks. The shafts of the two induction machines are mechanically connected for concurrent rotation and the rotor windings of the two machines are electrically connected in a reverse phase sequence. The cascaded induction machines are geared to a relatively low power variable speed drive which accurately controls the position and rotation of the shafts. A control system supplies low frequency excitation current for the variable speed drive and is capable of continuous operation through zero frequency to reverse the direction of rotation. The control system determines the level of power flow within the induction machines and is unresponsive to the difference in frequency of generation of the two generating networks so that the power flow is controlled even under transient load conditions. | ||||||
| 131 | Rotary transformer for coupling multiphase systems having a small frequency difference | US3471708D | 1966-07-18 | US3471708A | 1969-10-07 | RAUHUT PAUL; GLAVITSCH JOHANN; CUNY ROBERT |
| 132 | Control of power transferring apparatus | US69864433 | 1933-11-18 | US1955539A | 1934-04-17 | DODGE JAMES W |
| 133 | Distribution system | US73303524 | 1924-08-20 | US1619337A | 1927-03-01 | EVANS ROBERT D |
| 134 | System for transmitting electrical power | US15027786 | 2013-10-07 | US10128657B2 | 2018-11-13 | Hartmut Huang; Peter Menke; Karlheinz Springer; Michael Weinhold |
| A system transmits electrical power between a first and a second alternating voltage network. A self-commutated converter can be connected to the second alternating voltage network, the converter being connected to an unregulated rectifier via a direct voltage connection. The unregulated rectifier can be connected to the first alternating voltage network on an alternating voltage side. The system has a network generation device, which can be connected to the first alternating voltage network and is provided for generating an alternating voltage in the first alternating voltage network. The network generation device is configured to exchange reactive power and active power with the first alternating voltage network. Furthermore, a method is provided which stabilizes a network frequency of the first alternating voltage network, in which the network frequency in the first alternating voltage network is regulated by changing a voltage at the direct voltage terminal of the self-commutated converter. | ||||||
| 135 | CONTINUOUSLY BALANCING MULTIPLE PHASES OF A POWER GRID | US15912609 | 2018-03-06 | US20180198281A1 | 2018-07-12 | Mudi M. Fluman; Yaacov Frank; Igor Nabutovsky; Yehuda Shiran |
| Intermittently re-distributing power from three phases of a power grid connected to power consuming components of a data center by configuring power supply units (PSUs) which are integrated into each enclosure, two PSUs per enclosure. The distribution is determined by machine logic to: (i) meet the predicted power requirements of the power consuming components of the data center, and (ii) the use of first phase, second phase and third phase electrical powers is at least approximately in balance. | ||||||
| 136 | Peer-to-Peer: AC Power Grid Compensation Architecture | US15793909 | 2017-10-25 | US20180115160A1 | 2018-04-26 | Anil Tuladhar; Frederick Flett |
| A peer-to-peer power compensation architecture for utility power systems has a “ring-pathed” power transmission supply line with legs connecting a utility power source to a utility customer load, to a secondary power source, and to the utility customer load. A sinusoidal signal is injected on the first and third legs, with a predetermined amplitude, frequency and phase characteristics, wherein at least one of the characteristics being varied as function of a voltage level and a power factor of supplied power from the respective leg. A controllable power hub with an inverter is coupled to at least the first leg and the third leg, the inverter having at least one DC or AC-based power source. The injected signal's characteristics from the respective leg are evaluated to determine if the power hub's power should be introduced to the leg to compensate for under-voltage conditions. | ||||||
| 137 | Method and apparatus for obtaining electricity from offshore wind turbines | US14490311 | 2014-09-18 | US09859806B2 | 2018-01-02 | Debrup Das; Jiaqi Liang; Darren Tremelling; Jiuping Pan |
| According to one aspect of the teachings herein, a system for obtaining electricity from wind turbines provides advantageous operation with respect to offshore wind turbines where the size and weight of electricity generation and collection equipment are key considerations. The contemplated system includes an apparatus that is configured for collecting wind-generated electricity at a fixed low frequency and at a desired collection voltage, based on the advantageous configuration and use of a modular multilevel converter or MMC. | ||||||
| 138 | Station-building power supply device and method of controlling the same | US14423829 | 2012-08-29 | US09859715B2 | 2018-01-02 | Takeshi Tanaka; Yasushi Matsumura; Wataru Okuda; Syuji Ishikura |
| A station-building power supply device is provided in each station building and supplies low-voltage AC power to station building facilities of each station building. There are two mode therein: a regenerative mode in which, when regenerative power regenerated by a train to an overhead wire becomes surplus, the surplus regenerative power supplied from the overhead wire and power supplied from a high-voltage distribution line are used together to supply low-voltage AC power corresponding to an amount of normal power consumption of the station building; and a standby power supply mode in which, when a power outage of the high-voltage distribution line occurs, power supplied from the overhead wire is used to supply low-voltage AC power corresponding to an amount of emergency power of the station building. | ||||||
| 139 | ELECTRIC POWER GENERATING SYSTEM | US15522131 | 2015-10-08 | US20170338759A1 | 2017-11-23 | Klaus Vänskä; Pasi Pohjanheimo; Sami Kanerva; Mikko Kajava |
| An electric power generation system and a method in an electric power generation system. The system comprising one or more generators for producing electrical energy, each generator being arranged to be driven with a corresponding prime mover, wherein the generators are multiphase AC generators adapted to generate a multiphase voltage having a frequency and an amplitude, the phase outputs of the generators are connectable to a common multiphase bus for distributing the electrical energy generated by the AC generators, the system comprises further means for providing independent reference values for a rotational speed of the prime movers and for amplitude of the multiphase voltage, the rotational speed of the prime movers defining the frequency of the multiphase voltage, and the system is adapted to operate in at least three operation points on the basis of the provided independent reference values, an operation point being defined by a ratio of the amplitude of the multiphase voltage to the frequency of the multiphase voltage, wherein the at least three operation points are different. | ||||||
| 140 | Electricity distribution system, end user residence, and method | US14738569 | 2015-06-12 | US09780566B2 | 2017-10-03 | Martinus Johannes Maria Van Riet |
| An electricity distribution system, arranged to provide low voltage to end users and located at end user locations, includes a first medium voltage line for providing medium voltage and several end user electricity providers associated with respective several end user locations. Each end user electricity provider is couplable to an end user located at the respective end user location, and is arranged to provide low voltage to the end user. The first medium voltage line is provided with a number of branches and the end user electricity providers are each couplable to a respective branch of the medium voltage line via a respective second medium voltage line to receive medium voltage, and are arranged to convert the medium voltage to the low voltage to be provided to an end user. | ||||||
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