Ignition exciter system and ignition exciter circuit
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F23Q-003/00
F02P-003/08
출원번호
US-0220114
(2011-08-29)
등록번호
US-9013856
(2015-04-21)
발명자
/ 주소
Mahajan, Deepak
N, Renukaprasad
출원인 / 주소
Honeywell International Inc.
대리인 / 주소
Ingrassia Fisher & Lorenz, P.C.
인용정보
피인용 횟수 :
1인용 특허 :
4
초록▼
An ignition circuit is provided and may include a dc-dc converter having a positive terminal and a negative terminal, an igniter plug having a first terminal and a second terminal, a first capacitor coupled to the positive terminal, a first diode coupled between the first capacitor and the negative
An ignition circuit is provided and may include a dc-dc converter having a positive terminal and a negative terminal, an igniter plug having a first terminal and a second terminal, a first capacitor coupled to the positive terminal, a first diode coupled between the first capacitor and the negative terminal, a switching circuit coupled between the positive terminal, and the negative terminal, a second capacitor, a transformer having a primary and a secondary winding, the primary winding coupled between the negative terminal and the second capacitor and the secondary winding coupled between the negative terminal and the first terminal of igniter plug, and a second diode coupled between the first capacitor and the second terminal, wherein the second capacitor is coupled between the primary winding and the second diode, and wherein the first terminal is coupled to the secondary winding and the second terminal is connected to a ground.
대표청구항▼
1. An ignition circuit, comprising: a dc-dc converter having a positive terminal and a negative terminal and configured to be coupled to an input voltage source and electronically controlled to output an amplified voltage across the positive terminal and the negative terminal;an igniter plug having
1. An ignition circuit, comprising: a dc-dc converter having a positive terminal and a negative terminal and configured to be coupled to an input voltage source and electronically controlled to output an amplified voltage across the positive terminal and the negative terminal;an igniter plug having a first terminal and a second terminal;a first capacitor coupled to the positive terminal of the dc-dc converter;a first diode coupled between the first capacitor and the negative terminal of the dc-dc converter;a switching circuit electrically coupled between the positive terminal of the dc-dc converter and the negative terminal of the dc-dc converter;a second capacitor;a transformer having a primary and a secondary winding, the primary winding electrically coupled between the negative terminal of the dc-dc converter and the second capacitor and the secondary winding electrically coupled between the negative terminal of the dc-dc converter and the first terminal of igniter plug; anda second diode electrically coupled between the first capacitor and the second terminal of the igniter plug,wherein the second capacitor is electrically coupled between the primary winding of the transformer and the second diode, andwherein the first terminal of the igniter plug is electrically coupled to the secondary winding of the transformer and the second terminal of the igniter plug is connected to a ground. 2. The ignition circuit of claim 1, wherein the second diode is electrically coupled between the first diode and the primary winding of the transformer. 3. The ignition circuit of claim 1, wherein the second diode is electrically coupled between the first capacitor and the second capacitor. 4. The ignition circuit of claim 1, further comprising a controller electrically coupled to the dc-dc converter and the switching circuit, wherein the controller is configured to: open the switching circuit; andenable the dc-dc converter to charge the first capacitor. 5. The ignition circuit of claim 4, wherein after the first capacitor is charged to a predetermined voltage, the controller is further configured to: disable the dc-dc converter; andclose the switching circuit. 6. The ignition circuit of claim 1, wherein the transformer is a saturable core step-up transformer. 7. The ignition circuit of claim 1, wherein the switching circuit is a single insulated-gate bipolar transistor. 8. The ignition circuit of claim 1, wherein the switching circuit is an integrated discharge switch. 9. The ignition circuit of claim 1, wherein the switching circuit comprises a plurality of integrated discharge switches. 10. The ignition circuit of claim 1, wherein the switching circuit comprises a plurality of insulated-gate bipolar transistors. 11. The ignition circuit of claim 1, wherein the primary winding of the transformer and the second capacitor are configured to form a inductor-capacitor series resonant circuit. 12. An ignition system exciter circuit, comprising: a storage capacitor configured to receive a charge;a discharge circuit electrically connected to the storage capacitor;an igniter plug electrically connected to the discharge circuit;a switching circuit for controlling a discharge of the storage capacitor through the discharge circuit and igniter plug; anda first diode configured to provide a high impedance path when the storage capacitor is being charged to block energy loss through the said discharge circuit and the igniter plug,said discharge circuit comprising: a saturable core step-up transformer having a primary winding and a secondary winding wherein said secondary winding includes a first terminal connected to a first terminal of the primary winding and a second terminal of the secondary winding is connected to the igniter plug, and the first terminal of the primary winding receives energy from the storage capacitor by operation of the switching circuit; anda resonance capacitor electrically connected to a second terminal of the said primary winding. 13. The ignition system exciter circuit of claim 12, further comprising a dc-dc converter to selectively charge the storage capacitor. 14. The ignition system exciter circuit of claim 12, wherein the first diode is further configured to provide a low impedance path when the storage capacitor is being discharged. 15. The ignition system exciter circuit of claim 14, further comprising a second diode, where in the first diode and second diode are configured to provide a freewheeling energy path to the igniter plug while energy is stored in the primary winding of the transformer. 16. The ignition system exciter circuit of claim 12, wherein said switching circuit comprises a switch that provides a very low impedance path from the storage capacitor to the igniter plug when the storage capacitor is being discharged. 17. The ignition system exciter circuit of claim 12, wherein the ignition system is used in a gas turbine engine. 18. An engine ignition system, comprising: an amplifier configured to receive an input voltage and to selectively output an amplified voltage;a storage capacitor electrically coupled to the amplifier;a discharge circuit selectively coupled to the storage capacitor;an igniter plug coupled to the discharge circuit; anda diode configured to provide a high impedance path when the storage capacitor is being charged to block energy loss through the said discharge circuit and the igniter plug,wherein the discharge circuit further comprises: a transformer having a primary winding and a secondary winding; anda resonant capacitor coupled to the primary winding.
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이 특허에 인용된 특허 (4)
Phelon Russell D. (Longmeadow MA) Burson Bob O. (East Longmeadow MA), Capacitor discharge ignition system.
Wilmot Theodore Steven ; Driscoll John Cuervo ; Kempinski Steven John ; Berliner James R., Turbine engine ignition exciter circuit including low voltage lockout control.
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