1
Einar V Larsen, Robert W Delmerico: Battery energy storage power conditioning system. General Electric Company, Enrique J Mora, August 25, 1998: US05798633 (59 worldwide citation)

A method and apparatus for controlling a battery energy storage system of the type in which an inverter is coupled to convert direct current power from a DC source to a controlled frequency AC power suitable for supplementing utility power or for replacing utility power includes a control mechanism ...


2
Einar V Larsen, Nicholas W Miller: Phase-shifting transformer system. Electric Power Research Institute, Klarquist Sparkman Campbell Leigh & Whinston, November 24, 1992: US05166597 (37 worldwide citation)

A faster, more controllable phase-shifting transformer system is provided, along with a method of retrofitting and upgrading a preexisting system for faster operation, and a method of applying a desired phase shift to the voltage on a polyphase transmission line. A phase-shifting transformer set has ...


3
Einar V Larsen: Voltage control for wind generators. General Electric Company, Blakely Sokoloff Taylor & Zafman, January 23, 2007: US07166928 (36 worldwide citation)

A wind turbine generator control system includes relatively fast regulation of voltage near the individual generators with relatively slower overall reactive power regulation at a substation or wind farm level. The setpoint of the relatively fast voltage regulator is adjusted by the relatively slow ...


4
Einar V Larsen: Voltage control for wind generators. General Electric Company, Blakely Sokoloff Taylor & Zafman, May 29, 2007: US07224081 (27 worldwide citation)

A wind turbine generator control system includes relatively fast regulation of voltage near the individual generators with relatively slower overall reactive power regulation at a substation or wind farm level. The setpoint of the relatively fast voltage regulator is adjusted by the relatively slow ...


5
Colin E J Bowler, Einar V Larsen, Daniel H Baker: Vernier control system for subsynchronous resonance mitigation. Electric Power Research Institute, Klarquist Sparkman Campbell Leigh & Whinston, July 13, 1993: US05227713 (27 worldwide citation)

A subsynchronous resonance mitigation system, including a method and apparatus, for damping undesirable subsynchronous resonance oscillations in a generator, which, if left unchecked, may damage the shafts of a turbine-generator set. A remote coupling apparatus, such as a thyristor controlled series ...


6
Einar V Larsen: Voltage control for wind generators. General Electric Company, Blakely Sokoloff Taylor & Zafman, October 10, 2006: US07119452 (27 worldwide citation)

A wind turbine generator control system includes relatively fast regulation of voltage near the individual generators with relatively slower overall reactive power regulation at a substation or wind farm level. The setpoint of the relatively fast voltage regulator is adjusted by the relatively slow ...


7
Einar V Larsen, Allen M Ritter: Apparatus for protection of power-electronics in series compensating systems. General Electric Company, Wayne O Travnham, February 1, 2000: US06021035 (24 worldwide citation)

An active power line compensation circuit for providing a power distribution network with a series compensation system that utilizes a transformer-coupled three-phase voltage-source inverter. A solid-state thyristor shorting ("crowbar") switch is provided on a third winding of a coupling series tran ...


8
Mark A Runkle, Donald Gordon McLaren, Glenn Henry Ardley, Einar V Larsen, Konrad Weeber: Asynchronous conversion method and apparatus for use with variable speed turbine hydroelectric generation. General Electric Co, Nixon & Vanderhye, April 21, 1998: US05742515 (22 worldwide citation)

A hydroelectric power generation system (20) generates electrical power for an electrical utilization system (72). A controller (42) obtains a requested output electrical power level from a hydro-turbine unit (70) by using a signal indicative of water head (h.sub.meas) to control speed of an asynchr ...


9
Einar V Larsen, Allen M Ritter: Apparatus for protection of power-electronics in series compensating systems. General Electric Company, Wayne O Traynham, Enrique J Mora, March 31, 1998: US05734256 (19 worldwide citation)

An active power line conditioner circuit having a series compensation system arrangement utilizes a transformer-coupled three-phase voltage-source inverter. A conventional metal oxide varistor (MOV) and bypass breaker combination are provided on the line side of the coupling transformer. A solid-sta ...


10
Einar V Larsen, Kara Clark: Thyristor controlled series capacitor vernier control system. Electric Power Research Institute, Klarquist Sparkman Campbell Leich & Whinston, April 13, 1993: US05202583 (16 worldwide citation)

A firing control scheme, including a method and apparatus, for secure vernier operation of a thyristor controlled series capacitor (TCSC) in series with a transmission line uses phase controlled firing based on monitored capacitor voltage and line current. The TCSC system has a thyristor switched in ...



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