Systems and methods for remote or local shut-off of a photovoltaic system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G05B-009/02
H01L-031/02
H02J-001/00
H02J-003/38
H02S-040/30
H02M-007/44
G06F-011/07
출원번호
US-0186330
(2016-06-17)
등록번호
US-10063056
(2018-08-28)
발명자
/ 주소
Makhota, Maxym
Eizips, Daniel
Kikinis, Dan
출원인 / 주소
TIGO ENERGY, INC.
대리인 / 주소
Greenberg Traurig, LLP
인용정보
피인용 횟수 :
1인용 특허 :
58
초록▼
Systems and methods for shut-down of a photovoltaic system. In one embodiment, a method implemented in a computer system includes: communicating, via a central controller, with a plurality of local management units (LMUs), each of the LMUs coupled to control a respective solar module; receiving, via
Systems and methods for shut-down of a photovoltaic system. In one embodiment, a method implemented in a computer system includes: communicating, via a central controller, with a plurality of local management units (LMUs), each of the LMUs coupled to control a respective solar module; receiving, via the central controller, a shut-down signal from a user device (e.g., a hand-held device, a computer, or a wireless switch unit); and in response to receiving the shut-down signal, shutting down operation of the respective solar module for each of the LMUs.
대표청구항▼
1. A solar module, comprising: a photovoltaic panel having an output;a local management unit connected to the photovoltaic panel to receive the output as input, the local management unit having: a communication module to receive a shut-down signal;a controller powered by the photovoltaic panel;a cir
1. A solar module, comprising: a photovoltaic panel having an output;a local management unit connected to the photovoltaic panel to receive the output as input, the local management unit having: a communication module to receive a shut-down signal;a controller powered by the photovoltaic panel;a circuit path connected to the output of the photovoltaic panel, the circuit path comprising a switch controlled by the controller anda diode connected in series with the switch;wherein before the shut-down signal is received in the communication module, the switch is in an open state to prevent the output of the photovoltaic panel from going through the circuit path; andwherein after the shut-down signal is received in the communication module, the controller places the switch in a closed state; andwherein when the switch is in the closed state: the output of the photovoltaic panel goes through the circuit path including the diode, andthe controller is powered by a voltage provided by the diode. 2. The solar module of claim 1, wherein the local management unit further comprises a second switch controlled by the controller and coupled between the output of the photovoltaic panel and an output of the local management unit; before the shut-down signal is received the second switch is in a closed state to provide a second circuit path for power generated by the photovoltaic panel to go from the output of the photovoltaic panel to the output of the local management unit; and after the shut-down signal is received in the communication module, the controller places the second switch in an open state to disconnect the second circuit path. 3. The solar module of claim 2, wherein the local management unit further comprises a third switch controlled by the controller and coupled between output terminals of the local management unit; after the shut-down signal is received in the communication module, the controller places the third switch in a closed state to provide a third circuit path that short circuits the output terminals; and before the shut-down signal is received the third switch is in an open state to disconnect the third circuit path. 4. The solar module of claim 1, wherein the local management unit further comprises a third switch controlled by the controller and coupled between output terminals of the local management unit; after the shut-down signal is received in the communication module, the controller places the third switch in a closed state to provide a third circuit path that short circuits the output terminals; and before the shut-down signal is received the third switch is in an open state to disconnect the third circuit path. 5. The solar module of claim 1, wherein the controller is configured to receive heartbeat signals from a central controller. 6. The solar module of claim 5, wherein the shut-down signal corresponds to time out of the heartbeat signals. 7. The solar module of claim 5, wherein the shut-down signal corresponds to a wireless signal transmitted from the central controller. 8. The solar module of claim 7, wherein the central controller includes a push-button which when pressed, causes the central controller to transmit the wireless signal. 9. The solar module of claim 7, wherein the central controller is controlled by a remote user device via a network connection to transmit the wireless signal. 10. A solar module, comprising: a photovoltaic panel having an output;a local management unit connected to the photovoltaic panel to receive the output as input, the local management unit having: a communication module to receive a shut-down signal;a controller;a first circuit path to provide power from the output of the photovoltaic panel to the controller before the shut-down signal is received in the communication module; anda second circuit path to provide power from the output of the photovoltaic panel to the controller after the shut-down signal is received in the communication module, wherein: the second circuit path includes a switch and a diode connected in series;the switch is controlled by the controller according to the shut-down signal to close the first circuit path; andwhen the switch is closed, a voltage across the diode powered by the output of the photovoltaic panel provides power to the controller. 11. The solar module of claim 10, wherein before the shut-down signal, the second circuit path is open; and after the shut-down signal, the second circuit path is closed. 12. The solar module of claim 10, wherein the first circuit path is coupled from the output of the photovoltaic panel to an output of the local management unit. 13. The solar module of claim 12, wherein the first circuit path includes a second switch controlled by the controller according to the shut-down signal to open the first circuit path. 14. A method implemented in a solar module, comprising: receiving, as input in a local management unit connected to the photovoltaic panel, an output from the photovoltaic panel, the local management unit having:a communication module;a controller;a first circuit path; anda second circuit path having a switch and a diode connected in series;providing, via the first circuit path, power from the output of the photovoltaic panel to the controller before a shut-down signal is received in the communication module;receiving, in the communication module, the shut-down signal; andproviding, via the second circuit path, power from the output of the photovoltaic panel to the controller after the shut-down signal is received in the communication module, by controlling, by the controller, according to the shut-down signal to close the switch, wherein when the switch is closed, a voltage across the diode powered by the output of the photovoltaic panel provides power to the controller. 15. The method of claim 14, further comprising: opening the switch before the shut-down signal is received in the communication module. 16. The method of claim 14, wherein the first circuit path is coupled from the output of the photovoltaic panel to an output of the local management unit. 17. The method of claim 16, further comprising: controlling, by the controller, according to the shut-down signal to open the first path.
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