De-icing arrangement and method for de-icing a structural element
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64D-015/12
B64D-015/16
출원번호
US-0650012
(2012-12-06)
등록번호
US-9878795
(2018-01-30)
국제출원번호
PCT/SE2012/051351
(2012-12-06)
국제공개번호
WO2014/088481
(2014-06-12)
발명자
/ 주소
Hådén, Bertil
Bäckström, Mats
출원인 / 주소
SAAB AB
대리인 / 주소
Venable LLP
인용정보
피인용 횟수 :
0인용 특허 :
9
초록▼
A de-icing arrangement and method for de-icing a structural element. The arrangement includes at least one electromagnetic actuator, a capacitive storage bank, a control unit arranged to provide an excitation pulse to the at least one electromagnetic actuator, and a charging circuit arranged to char
A de-icing arrangement and method for de-icing a structural element. The arrangement includes at least one electromagnetic actuator, a capacitive storage bank, a control unit arranged to provide an excitation pulse to the at least one electromagnetic actuator, and a charging circuit arranged to charge the capacitive storage bank. The at least one electromagnetic actuator is arranged to expand in at least one direction when fed with the excitation pulse. The at least one electromagnetic actuator is placed in relation to the structural element so as to apply a mechanical force caused by the expansion on the structural element. The capacitive storage bank includes a plurality of selectable capacitors of different size. The control unit is arranged to select at least one capacitor for charging having a size such that current discharge of the capacitive storage bank into the at least one electromagnetic actuator generates a desired distribution between heat and mechanical power.
대표청구항▼
1. A de-icing arrangement for de-icing a structural element, the de-icing arrangement comprising: at least one electromagnetic actuator;a capacitive storage bank comprising a plurality of capacitors;a control unit arranged to provide an excitation pulse to the at least one electromagnetic actuator;
1. A de-icing arrangement for de-icing a structural element, the de-icing arrangement comprising: at least one electromagnetic actuator;a capacitive storage bank comprising a plurality of capacitors;a control unit arranged to provide an excitation pulse to the at least one electromagnetic actuator; anda charging circuit arranged to charge the capacitive storage bank,wherein the at least one electromagnetic actuator is arranged to expand in at least one direction when fed with the excitation pulse, wherein the at least one electromagnetic actuator is arranged in relation to the structural element so as to apply a mechanical force caused by the expansion on the structural element, wherein the capacitive storage bank comprises a plurality of selectable capacitors of different capacitance, and wherein the control unit is arranged to select at least one capacitor for charging having a total capacitance such that a current discharge of the capacitive storage bank into the at least one electromagnetic actuator generates a desired distribution between heating of the electromagnetic actuator and mechanical power. 2. The de-icing arrangement according to claim 1, wherein the control unit is arranged to determine an output voltage/current from the charging circuit based on the selected at least one capacitor so that the excitation pulse provided by the at least one selected capacitor has a predetermined maximum current/voltage peak and to control the charging circuit to output the determined output voltage/current. 3. The de-icing arrangement according to claim 1, wherein the control unit is arranged to control the charging of the capacitive storage bank for a plurality of consecutive excitation pulses provided during a predetermined time period so that the at least one electromagnetic actuator generates the desired distribution between heating of the electromagnetic actuator and mechanical power. 4. The de-icing arrangement according to claim 1, wherein the control unit is arranged to select capacitors based on at least one of the following parameters: temperature, humidity, ice thickness at the structural element, ice thickness growth, speed and altitude. 5. The de-icing arrangement according to claim 1, wherein the structural element comprises a base forming a support for the at least one electromagnetic actuator and a flexible skin, and wherein the at least one electromagnetic actuator is arranged in relation to the flexible skin so as to apply the force on the flexible skin at the expansion. 6. The de-icing arrangement according to claim 1, wherein the control unit is arranged to control current discharge of the capacitive storage bank into the at least one electromagnetic actuator so as to abort the excitation pulse at a predetermined timing after start of the excitation pulse. 7. The de-icing arrangement according to claim 6, wherein the predetermined timing is selected so as to substantially coincide with the timing for a change of direction of the excitation pulse current. 8. The de-icing arrangement according to claim 1, wherein the control unit is arranged to operate in at least two modes of operation, wherein a first operational mode comprises performing de-icing mainly mechanically utilizing the excitation pulse and a second operational mode comprises performing de-icing mechanically and thermally, wherein the second operational mode comprises heating the structural element utilizing the electromagnetic actuator. 9. The de-icing arrangement according to claim 8, wherein the first operational mode comprises selecting a set of capacitances having smaller total resulting capacitance than in the second operational mode. 10. A structural element, comprising: at least one de-icing arrangement comprising at least one electromagnetic actuator,a capacitive storage bank comprising a plurality of capacitors,a control unit arranged to provide an excitation pulse to the at least one electromagnetic actuator, anda charging circuit arranged to charge the capacitive storage bank,wherein the at least one electromagnetic actuator is arranged to expand in at least one direction when fed with the excitation pulse, wherein the at least one electromagnetic actuator is arranged in relation to the structural element so as to apply a mechanical force caused by the expansion on the structural element, wherein the capacitive storage bank comprises a plurality of selectable capacitors of different capacitance, and wherein the control unit is arranged to select at least one capacitor for charging having a total capacitance such that a current discharge of the capacitive storage bank into the at least one electromagnetic actuator generates a desired distribution between heating of the electromagnetic actuator and mechanical power. 11. The structural element according to claim 10, wherein the structural element comprises a base forming a support for the at least one electromagnetic actuator and a flexible skin, and wherein the at least one electromagnetic actuator is arranged in relation to the flexible skin so as to apply the force on the flexible skin at the expansion. 12. The structural element according to claim 10, wherein the structural element comprises part of an aircraft. 13. The structural element according to claim 10, wherein the structural element comprises part of a wind power turbine. 14. A method for de-icing a structural element, the method comprising: providing an excitation pulse to at least one electromagnetic actuator, whereby the at least one electromagnetic actuator is expanded in at least one direction in response to the received excitation pulse, and wherein the at least one electromagnetic actuator is arranged in an abutting relation to the structural element so as to, when expanded, apply a force on the structural element;selecting at least one capacitor from a capacitive storage bank comprising a plurality of selectable capacitors having different capacitance; andcharging the selected at least one capacitor,wherein providing an excitation pulse to at least one electromagnetic actuator comprises discharging the charged at least one capacitor into the at least one electromagnetic actuator, andwherein the selecting comprises selecting at least one electromagnetic capacitor having a total capacitance such that the subsequent current discharge to provide the excitation pulse generates a desired distribution between heating of the electromagnetic actuator and mechanical power. 15. The method for de-icing a structural element according to claim 14, further comprising: determining a charging current/voltage based on the selected at least one capacitor and based on information related to a desired peak current of the excitation pulse, wherein the charging of the selected at least one capacitor is performed with the determined charging current/voltage. 16. A computer program product, comprising: a non-transitory computer readable element; andcomputer program instructions recorded on the computer readable element and executable by a processor for carrying out a method for de-icing a structural element, the method comprising: providing an excitation pulse to at least one electromagnetic actuator, whereby the at least one electromagnetic actuator is expanded in at least one direction in response to the received excitation pulse, and wherein the at least one electromagnetic actuator is arranged in an abutting relation to the structural element so as to, when expanded, apply a force on the structural element;selecting at least one capacitor from a capacitive storage bank comprising a plurality of selectable capacitors having different capacitance; andcharging the selected at least one capacitor,wherein providing an excitation pulse to at least one electromagnetic actuator comprises discharging the charged at least one capacitor into the at least one electromagnetic actuator, andwherein the selecting comprises selecting at least one electromagnetic capacitor having a total capacitance such that the subsequent current discharge to provide the excitation pulse generates a desired distribution between heating of the electromagnetic actuator and mechanical power.
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이 특허에 인용된 특허 (9)
Adams Lowell J. (Dayton OH) Weisend ; Jr. Norbert A. (Cuyahoga Falls OH) Pisarski Nathan (Stow OH) Simshauser Steven C. (Akron OH), De-icer adapted for installment on the inner surface of a structural member.
Adams Lowell J. (North Canton OH) Simshauser Steven C. (Akron OH) Pisarski Nathan (Stow OH) Weisend ; Jr. Norbert A. (Cuyahoga Falls OH), Electro-repulsive separation system for deicing.
Zieve Peter B. (Seattle WA) Smith Samuel O. (Woodinville WA), Electromagnetic repulsion system for removing contaminants such as ice from the surfaces of aircraft and other objects.
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