Load controller and method to enhance effective capacity of a photovotaic power supply using a dynamically determined expected peak loading
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06F-019/00
G05F-001/40
출원번호
US-0523682
(2000-03-10)
발명자
/ 주소
Perez, Richard
출원인 / 주소
The Research Foundation of State University of New York
대리인 / 주소
Radigan, Esq., Kevin P.Heslin Rothenberg Farley & Mesiti P.C.
인용정보
피인용 횟수 :
30인용 특허 :
21
초록▼
A load controller and method are provided for maximizing effective capacity of a non-controllable, renewable power supply coupled to a variable electrical load also coupled to a conventional power grid. Effective capacity is enhanced by monitoring power output of the renewable supply and loading, an
A load controller and method are provided for maximizing effective capacity of a non-controllable, renewable power supply coupled to a variable electrical load also coupled to a conventional power grid. Effective capacity is enhanced by monitoring power output of the renewable supply and loading, and comparing the loading against the power output and a load adjustment threshold determined from an expected peak loading. A value for a load adjustment parameter is calculated by subtracting the renewable supply output and the load adjustment parameter from the current load. This value is then employed to control the variable load in an amount proportional to the value of the load control parameter when the parameter is within a predefined range. By so controlling the load, the effective capacity of the non-controllable, renewable power supply is increased without any attempt at operational feedback control of the renewable supply. The expected peak loading of the variable load can be dynamically determined within a defined time interval with reference to variations in the variable load.
대표청구항▼
A load controller and method are provided for maximizing effective capacity of a non-controllable, renewable power supply coupled to a variable electrical load also coupled to a conventional power grid. Effective capacity is enhanced by monitoring power output of the renewable supply and loading, an
A load controller and method are provided for maximizing effective capacity of a non-controllable, renewable power supply coupled to a variable electrical load also coupled to a conventional power grid. Effective capacity is enhanced by monitoring power output of the renewable supply and loading, and comparing the loading against the power output and a load adjustment threshold determined from an expected peak loading. A value for a load adjustment parameter is calculated by subtracting the renewable supply output and the load adjustment parameter from the current load. This value is then employed to control the variable load in an amount proportional to the value of the load control parameter when the parameter is within a predefined range. By so controlling the load, the effective capacity of the non-controllable, renewable power supply is increased without any attempt at operational feedback control of the renewable supply. The expected peak loading of the variable load can be dynamically determined within a defined time interval with reference to variations in the variable load. y therefrom. 9. A probe as claimed in claim 1, wherein the helical structure includes a shape memory element that is biased to the expanded state. 10. A probe as claimed in claim 1, wherein the helical structure includes a shape memory element and the shape memory of the shape memory element is biased to the expanded state at temperatures above body temperature and is not biased to the expanded state at body temperature. 11. A probe, comprising: an elongate body defining a distal region, a proximal region and a longitudinal axis; a helical structure associated with the distal region of the elongate body including a longitudinal axis, a distal end, and a proximal end, the distal and proximal ends of the helical structure being located on the longitudinal axis of the helical structure; and at least one energy transmitting operative element supported on the helical structure. 12. A probe as claimed in claim 11, wherein the at least one energy transmitting operative element comprises a plurality of electrodes. 13. A probe as claimed in claim 11, wherein the distal region includes a longitudinally extending portion proximal to the helical structure that is substantially coaxial with the helical structure and a longitudinally extending portion distal to the helical structure that is substantially coaxial with the helical structure. 14. A probe, comprising: an elongate body defining a distal region, a proximal region and a longitudinal axis; a helical structure associated with the distal region of the elongate body, movable between a fully expanded state and an unexpanded state and defining a longitudinal axis and a size corresponding to a human pulmonary vein when in the fully expanded state; at least one energy transmitting operative element supported on the helical structure; and a longitudinally extending anchor member, associated with the distal region of the elongate body, located distally of the helical structure and defining a longitudinal axis that is substantially co-axial with the longitudinal axis of the helical structure. 15. A probe as claimed in claim 14, wherein the anchor member is at least one inch in length. 16. A probe as claimed in claim 14, wherein the helical structure comprises a continuous structure that completes at least approximately one revolution about the longitudinal axis. 17. A probe as claimed in claim 14, wherein the at least one energy transmitting operative element comprises a plurality of electrodes. 18. A probe, comprising: an elongate body defining an inner lumen, a distal region and a proximal region; a helical structure integral with the distal region of the elongate body including a proximal portion and a distal portion that is longitudinally and rotatably movable relative to the proximal portion; a control element extending through the inner lumen of the elongate body and associated with the distal portion of the helical structure; and a handle associated with the proximal region of the elongate body, the handle including a longitudinal movement device that moves the control element longitudinally relative to the proximal region of the elongate body, and a rotational movement device that rotates the control element relative to the proximal region of the elongate body. 19. A probe as claimed in claim 18, wherein the elongate body comprises a catheter body. 20. A probe as claimed in claim 18, wherein the control element comprises a stylet. 21. A probe as claimed in claim 18, wherein the longitudinal movement device comprises a rotatable knob. 22. A probe as claimed in claim 21, further comprising: a threaded spool associated with the rotatable knob. 23. A probe as claimed in claim 22, further comprising: a guide slot located distally of the threaded spool. 24. A probe as claimed in claim 18, wherein the handle includes a first handle portion fixedly secured to the elongate body and the rotational movement device comprises a second handle portion rotation
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