CN112467712A - Low-voltage power supply system of ultra-light helicopter - Google Patents
Low-voltage power supply system of ultra-light helicopter Download PDFInfo
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- CN112467712A CN112467712A CN202011213111.2A CN202011213111A CN112467712A CN 112467712 A CN112467712 A CN 112467712A CN 202011213111 A CN202011213111 A CN 202011213111A CN 112467712 A CN112467712 A CN 112467712A
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- Prior art keywords
- contactor
- storage battery
- generator
- bus bar
- unloading
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 30
- 238000010248 power generation Methods 0.000 claims description 10
- 239000007858 starting material Substances 0.000 claims description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims 2
- 229910001416 lithium ion Inorganic materials 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D47/00—Equipment not otherwise provided for
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D2221/00—Electric power distribution systems onboard aircraft
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Aviation & Aerospace Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention belongs to the technical field of aircraft power supply system design, and discloses an ultra-light helicopter low-voltage power supply system, which comprises: 1200VA alternating-current generator, power converter, lithium storage battery, 250VA alternating-current generator, rectifier, direct current distribution control box, distribution panel box; wherein, a generator contactor, a storage battery contactor and a connecting unloading contactor are arranged in the direct current distribution control box; a generator bus bar PP2, an unloading bus bar PP3, a storage battery bus bar PP1, a control switch and an alarm indicator lamp are arranged in the switchboard box; the atypical aviation power supply system (low voltage 28VDC and high voltage 270VDC) is adopted, the ground power supply system is eliminated, and the starting and control process of the engine is completed by the storage battery system.
Description
Technical Field
The invention belongs to the technical field of aircraft power supply system design, and particularly relates to a low-voltage power supply system of an ultra-light helicopter.
Background
The ultra-light helicopter is a 500 kg-grade ultra-light civil helicopter, the selected engine control system adopts a low-voltage 14V direct-current power system, and the aviation low-voltage power supply is generally a 28V direct-current power supply. If a typical aviation low-voltage 28V direct-current power supply system is adopted, a power generation system and a storage battery system with two different voltages need to be designed simultaneously, so that the configuration of the power supply system is complicated, and the weight of the whole helicopter is increased.
Disclosure of Invention
In view of the problems in the background art, the invention aims to provide a low-voltage power supply system of an ultra-light helicopter, which adopts atypical aviation power supply systems (low voltage 28VDC and high voltage 270VDC), cancels a ground power supply system, and completes the starting and control process of an engine by a storage battery system.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
A low voltage power supply system for an ultra-light helicopter, said system comprising: 1200VA AC generator 1, power converter 2, lithium battery 3, 250VA AC generator 4, rectifier 5, direct current distribution control box 6, distribution board box 10;
wherein, a generator contactor 7, a storage battery contactor 8 and a connecting unloading contactor 9 are arranged in the direct current distribution control box 6;
a generator bus bar PP2, an unloading bus bar PP3, a storage battery bus bar PP1, a control switch 11 and an alarm indicator lamp 12 are arranged in the switchboard box 10;
the 1200VA alternating-current generator 1 and the power converter 2 are used for rectifying and outputting 14V direct-current power to be used by electric equipment on a generator bus bar PP2 and an unloading bus bar PP 3;
the lithium storage battery pack 3 is used for outputting 14V direct-current power supply to be used by electric equipment on the storage battery bus bar PP 1;
a 250VA AC generator 4 and a rectifier 5, which is used for rectifying and outputting 14V DC power to charge the lithium storage battery 3.
The technical scheme of the invention has the characteristics and further improvements that:
(1) one end of the storage battery contactor 8 is connected to the positive end of the lithium storage battery pack 3, the other end of the storage battery contactor is connected to the control switch 11, and the storage battery contactor 8 is controlled to be switched on/off through the on/off of the control switch 11;
when the main contact of the storage battery contactor 8 is normally in an open position, when the storage battery contactor 8 acts and is attracted, one end of the main contact of the storage battery contactor 8 is connected with the lithium storage battery pack 3, and the other end of the main contact of the storage battery contactor 8 is connected with a 14V storage battery bus bar PP1, so that the lithium storage battery pack 3 is connected with a 14V storage battery bus bar PP 1;
when the auxiliary contact of the storage battery contactor 8 is normally connected with the ground at one end, and the alarm indicator lamp 12 is connected with the other end, when the storage battery contactor 8 acts and is attracted, the alarm indicator lamp 12 is disconnected with the ground.
(2) One end of the generator contactor 7 is grounded, the other end of the generator contactor is connected to the control end of the power converter 2, and a ground/on signal is output to the power converter 2 through the control switch 11, so that the output end of the power converter is controlled to control a signal, and the pull-in/pull-out of the generator contactor 7 is controlled;
the main contact of the generator contactor 7 is normally in an open position, when the generator contactor 7 acts and is attracted, one end of the main contact is connected to the power output end of the power converter 2, and the other end of the main contact is connected to the 14V generator bus bar PP2, so that the power output end of the power converter is connected with the 14V generator bus bar PP 2;
when the generator contactor 7 acts and is attracted, one end of the auxiliary contact is grounded, and the other end of the auxiliary contact is connected to the unloading contactor 9, so that the unloading contactor 9 is controlled to be connected.
(3) One end of the connected unloading contactor 9 is connected with the motor bus bar PP2, the other end of the connected unloading contactor is connected with the auxiliary contact of the motor contactor 7, when the generator contactor 7 is in a normal state, the connected unloading contactor 9 is in a normal state, and when the generator contactor 7 acts and is attracted, the auxiliary contact of the generator contactor 7 sends a ground signal to one end of the connected unloading contactor 9, so that the connected unloading contactor 9 is controlled to act and attract;
when the connecting and unloading contactor 9 is in a normal state, one end of a main contact of the connecting and unloading contactor 9 is connected with the generator bus bar PP2, the other end of the main contact of the connecting and unloading contactor 9 is connected with the 14V storage battery bus bar PP1, when the connecting and unloading contactor 9 acts and is attracted, one end of the main contact of the connecting and unloading contactor 9 is connected with the generator bus bar PP2, and the other end of the main contact of the connecting and unloading contactor is connected with the unloading bus bar PP 36;
when the connecting and unloading contactor 9 is in a normal state, one end of the auxiliary contact of the connecting and unloading contactor 9 is grounded, the other end of the auxiliary contact of the connecting and unloading contactor 9 is connected with the alarm indicator lamp 12, and when the connecting and unloading contactor 9 acts and is attracted, one end of the auxiliary contact of the connecting and unloading contactor 9 is grounded, and the other end of the auxiliary contact of the connecting and unloading contactor 9 is disconnected.
(4) The 1200VA alternator 1 is used to power the power converter 2.
(5) The 250VA alternating-current generator 4 is connected with the rectifier 5; and the starter motor and the rectifier 5 are connected to the output end of the lithium battery pack 3 in parallel.
(6) When the power supply system is in a normal power supply state, the control switch controls the generator contactor 7 and the storage battery contactor 8 to be attracted;
the 1200VA alternating-current generator 1 rectifies and outputs 14V direct-current power to a generator bus bar PP2 and an unloading bus bar PP3 through a power converter 2 to supply power, and the 250VA alternating-current generator 4 rectifies and outputs 14V direct-current power to a storage battery bus bar PP1 through a rectifier 5 to supply power and charges a 12V/15Ah lithium storage battery pack 3; the battery bus bar PP1 and the generator bus bar PP2 are independent of each other in a normal power supply state.
(7) When the power supply system is in an emergency power supply state, the generator contactor 7 is in a disconnection state;
when the 14V direct current power generation system formed by the 1200VA alternating current generator 1 and the power converter 2 has a fault, the connecting unloading contactor 9 is actuated to be closed, the load on the unloading bus bar PP3 stops supplying power, and the generator bus bar PP2 supplies emergency power from the storage battery bus bar PP1 through the normally closed contact of the connecting unloading contactor 9.
(8) When the 14V DC power generation system composed of the 250VA AC generator 4 and a rectifier 5 is in failure, the storage battery bus bar PP1 is supplied with emergency power by the 12V/15Ah lithium storage battery 3.
(9) When the power supply system is in a starting power supply state, the control switch controls the storage battery contactor 8 to suck; when the engine is started, the 12V/15Ah lithium storage battery 3 supplies power to the storage battery bus bar PP1 and the generator bus bar PP2 at the same time, the engine control system supplies power to the storage battery bus bar PP1, and the rest emergency loads are supplied with power to the generator bus bar PP 2; and after the starting is finished, switching on a direct current power generation system on the machine, and thus, switching into a normal power supply state.
The invention provides a low-voltage power supply system of an ultra-light helicopter, which adopts an atypical aviation power supply system (low voltage 28VDC and high voltage 270VDC), cancels a ground power supply system, and completes the starting and control process of an engine by a storage battery system.
Drawings
Fig. 1 is a schematic block diagram of a low-voltage power supply system of an ultra-light helicopter according to an embodiment of the present invention.
Detailed Description
An embodiment of the present invention provides an ultra-light helicopter low-voltage power supply system, as shown in fig. 1, the system includes: 1200VA AC generator 1, power converter 2, lithium battery group 3, 250VA AC generator 4, rectifier 5, DC distribution control box 6, distribution board box 10.
Wherein, a generator contactor 7, a storage battery contactor 8 and a connecting unloading contactor 9 are arranged in the direct current distribution control box 6;
a generator bus bar PP2, an unloading bus bar PP3, a storage battery bus bar PP1, a control switch 11 and an alarm indicator lamp 12 are arranged in the switchboard box 10;
the 1200VA alternating-current generator 1 and the power converter 2 are used for rectifying and outputting 14V direct-current power to be used by electric equipment on a generator bus bar PP2 and an unloading bus bar PP 3;
the lithium storage battery pack 3 is used for outputting 14V direct-current power supply to be used by electric equipment on the storage battery bus bar PP 1;
a 250VA AC generator 4 and a rectifier 5, which is used for rectifying and outputting 14V DC power to charge the lithium storage battery 3.
In particular, the method comprises the following steps of,
(1) one end of the storage battery contactor 8 is connected to the positive end of the lithium storage battery pack 3, the other end of the storage battery contactor is connected to the control switch 11, and the storage battery contactor 8 is controlled to be switched on/off through the on/off of the control switch 11;
when the main contact of the storage battery contactor 8 is normally in an open position, when the storage battery contactor 8 acts and is attracted, one end of the main contact of the storage battery contactor 8 is connected with the lithium storage battery pack 3, and the other end of the main contact of the storage battery contactor 8 is connected with a 14V storage battery bus bar PP1, so that the lithium storage battery pack 3 is connected with a 14V storage battery bus bar PP 1;
when the auxiliary contact of the storage battery contactor 8 is normally connected with the ground at one end, and the alarm indicator lamp 12 is connected with the other end, when the storage battery contactor 8 acts and is attracted, the alarm indicator lamp 12 is disconnected with the ground.
(2) One end of the generator contactor 7 is grounded, the other end of the generator contactor is connected to the control end of the power converter 2, and a ground/on signal is output to the power converter 2 through the control switch 11, so that the output end of the power converter is controlled to control a signal, and the pull-in/pull-out of the generator contactor 7 is controlled;
the main contact of the generator contactor 7 is normally in an open position, when the generator contactor 7 acts and is attracted, one end of the main contact is connected to the power output end of the power converter 2, and the other end of the main contact is connected to the 14V generator bus bar PP2, so that the power output end of the power converter is connected with the 14V generator bus bar PP 2;
when the generator contactor 7 acts and is attracted, one end of the auxiliary contact is grounded, and the other end of the auxiliary contact is connected to the unloading contactor 9, so that the unloading contactor 9 is controlled to be connected.
(3) One end of the connected unloading contactor 9 is connected with the motor bus bar PP2, the other end of the connected unloading contactor is connected with the auxiliary contact of the motor contactor 7, when the generator contactor 7 is in a normal state, the connected unloading contactor 9 is in a normal state, and when the generator contactor 7 acts and is attracted, the auxiliary contact of the generator contactor 7 sends a ground signal to one end of the connected unloading contactor 9, so that the connected unloading contactor 9 is controlled to act and attract;
when the connecting and unloading contactor 9 is in a normal state, one end of a main contact of the connecting and unloading contactor 9 is connected with the generator bus bar PP2, the other end of the main contact of the connecting and unloading contactor 9 is connected with the 14V storage battery bus bar PP1, when the connecting and unloading contactor 9 acts and is attracted, one end of the main contact of the connecting and unloading contactor 9 is connected with the generator bus bar PP2, and the other end of the main contact of the connecting and unloading contactor is connected with the unloading bus bar PP 36;
when the connecting and unloading contactor 9 is in a normal state, one end of the auxiliary contact of the connecting and unloading contactor 9 is grounded, the other end of the auxiliary contact of the connecting and unloading contactor 9 is connected with the alarm indicator lamp 12, and when the connecting and unloading contactor 9 acts and is attracted, one end of the auxiliary contact of the connecting and unloading contactor 9 is grounded, and the other end of the auxiliary contact of the connecting and unloading contactor 9 is disconnected.
(4) The 1200VA alternator 1 is used to power the power converter 2.
(5) The 250VA alternating-current generator 4 is connected with the rectifier 5; and the starter motor and the rectifier 5 are connected to the output end of the lithium battery pack 3 in parallel.
(6) When the power supply system is in a normal power supply state, the control switch controls the generator contactor 7 and the storage battery contactor 8 to be attracted;
the 1200VA alternating-current generator 1 rectifies and outputs 14V direct-current power to a generator bus bar PP2 and an unloading bus bar PP3 through a power converter 2 to supply power, and the 250VA alternating-current generator 4 rectifies and outputs 14V direct-current power to a storage battery bus bar PP1 through a rectifier 5 to supply power and charges a 12V/15Ah lithium storage battery pack 3; the battery bus bar PP1 and the generator bus bar PP2 are independent of each other in a normal power supply state.
(7) When the power supply system is in an emergency power supply state, the generator contactor 7 is in a disconnection state;
when the 14V direct current power generation system formed by the 1200VA alternating current generator 1 and the power converter 2 has a fault, the connecting unloading contactor 9 is actuated to be closed, the load on the unloading bus bar PP3 stops supplying power, and the generator bus bar PP2 supplies emergency power from the storage battery bus bar PP1 through the normally closed contact of the connecting unloading contactor 9.
(8) When the 14V DC power generation system composed of the 250VA AC generator 4 and a rectifier 5 is in failure, the storage battery bus bar PP1 is supplied with emergency power by the 12V/15Ah lithium storage battery 3.
(9) When the power supply system is in a starting power supply state, the control switch controls the storage battery contactor 8 to suck; when the engine is started, the 12V/15Ah lithium storage battery 3 supplies power to the storage battery bus bar PP1 and the generator bus bar PP2 at the same time, the engine control system supplies power to the storage battery bus bar PP1, and the rest emergency loads are supplied with power to the generator bus bar PP 2; and after the starting is finished, switching on a direct current power generation system on the machine, and thus, switching into a normal power supply state.
The invention provides a low-voltage power supply system of an ultra-light helicopter, which adopts an atypical aviation power supply system (low voltage 28VDC and high voltage 270VDC), cancels a ground power supply system, and completes the starting and control process of an engine by a storage battery system.
Claims (10)
1. A low voltage power supply system for an ultra-light helicopter, said system comprising: the power supply comprises a 1200VA alternating-current generator (1), a power converter (2), a lithium storage battery pack (3), a 250VA alternating-current generator (4), a rectifier (5), a direct-current distribution control box (6) and a distribution board box (10);
wherein, a generator contactor (7), a storage battery contactor (8) and a connecting unloading contactor (9) are arranged in the direct current distribution control box (6);
a generator bus bar PP2, an unloading bus bar PP3, a storage battery bus bar PP1, a control switch (11) and an alarm indicator lamp (12) are arranged in the switchboard box (10);
the 1200VA alternating-current generator (1) and the power converter (2) are used for rectifying and outputting 14V direct-current power to be used by electric equipment on a generator bus bar PP2 and an unloading bus bar PP 3;
the lithium storage battery pack (3) is used for outputting 14V direct current power to be used by electric equipment on the storage battery bus bar PP 1;
the lithium ion battery pack comprises a 250VA alternating current generator (4) and a rectifier (5) which is used for rectifying and outputting a 14V direct current power supply to charge the lithium ion battery pack (3).
2. The low-voltage power supply system of the ultra-light helicopter of claim 1,
one end of the storage battery contactor (8) is connected to the positive end of the lithium storage battery pack (3), the other end of the storage battery contactor is connected to the control switch (11), and the storage battery contactor (8) is controlled to be closed/opened through the on/off of the control switch (11);
the main contact of the storage battery contactor (8) is normally in an open position, when the storage battery contactor (8) acts and is attracted, one end of the main contact of the storage battery contactor (8) is connected with the lithium storage battery pack (3), and the other end of the main contact of the storage battery contactor is connected with a 14V storage battery bus bar PP1, so that the lithium storage battery pack (3) is connected with a 14V storage battery bus bar PP 1;
when the auxiliary contact of the storage battery contactor (8) is normal, one end of the auxiliary contact is connected with the ground, the other end of the auxiliary contact is connected with the alarm indicating lamp (12), and when the storage battery contactor (8) acts and is attracted, the alarm indicating lamp (12) is disconnected with the ground.
3. The low-voltage power supply system of the ultra-light helicopter of claim 2,
one end of the generator contactor (7) is grounded, the other end of the generator contactor is connected to the control end of the power converter (2), and a ground/open signal is output to the power converter (2) through the control switch (11), so that the output end of the power converter is controlled to control a signal, and the pull-in/pull-out of the generator contactor (7) is controlled;
the main contact of the generator contactor (7) is normally in an open position, when the generator contactor (7) acts and is attracted, one end of the main contact is connected to the power output end of the power converter (2), and the other end of the main contact is connected to a 14V generator bus bar PP2, so that the power output end of the power converter is connected with a 14V generator bus bar PP 2;
when the auxiliary contact of the generator contactor (7) is normally connected with one end of the ground and the other end of the ground, the alarm indicator lamp is connected to one end of the auxiliary contact, and when the generator contactor (7) acts and is attracted, one end of the auxiliary contact is connected with the ground and the other end of the auxiliary contact is connected to the connected unloading contactor (9), so that the connected unloading contactor (9) is controlled.
4. A low-voltage power supply system for an ultra-light helicopter as claimed in claim 3,
one end of the connected unloading contactor (9) is connected with the motor bus bar PP2, the other end of the connected unloading contactor is connected with the auxiliary contact of the motor contactor (7), when the generator contactor (7) is in a normal state, the connected unloading contactor (9) is in a normal state, and when the generator contactor (7) acts and is attracted, the auxiliary contact of the generator contactor (7) sends a ground signal to one end of the connected unloading contactor (9), so that the connected unloading contactor (9) is controlled to act and attract;
when the connecting unloading contactor (9) is in a normal state, one end of a main contact of the connecting unloading contactor (9) is connected with the generator bus bar PP2, the other end of the main contact of the connecting unloading contactor is connected with the 14V storage battery bus bar PP1, when the connecting unloading contactor (9) acts and is attracted, one end of the main contact of the connecting unloading contactor (9) is connected with the generator bus bar PP2, and the other end of the main contact of the connecting unloading contactor is connected with the unloading bus bar PP 3;
when the connected unloading contactor (9) is in a normal state, one end of an auxiliary contact of the connected unloading contactor (9) is grounded, the other end of the auxiliary contact of the connected unloading contactor is connected with the alarm indicator lamp (12), and when the connected unloading contactor (9) acts and is attracted, one end of the auxiliary contact of the connected unloading contactor (9) is grounded, and the other end of the auxiliary contact of the connected unloading contactor is disconnected.
5. The low-voltage power supply system of the ultra-light helicopter of claim 1,
a1200 VA alternator (1) is used to supply power to a power converter (2).
6. The low-voltage power supply system of the ultra-light helicopter of claim 1,
the 250VA alternating current generator (4) is connected with the rectifier (5); and the starter and the rectifier (5) are connected to the output end of the lithium storage battery pack (3) in parallel.
7. The low-voltage power supply system of the ultra-light helicopter of claim 4,
when the power supply system is in a normal power supply state, the control switch controls the generator contactor (7) and the storage battery contactor (8) to be attracted;
the 1200VA alternating-current generator (1) rectifies and outputs 14V direct-current power to supply power to the generator bus bar PP2 and the unloading bus bar PP3 through the power converter (2), and the 250VA alternating-current generator (4) rectifies and outputs 14V direct-current power to supply power to the storage battery bus bar PP1 through the rectifier (5) and charges the 12V/15Ah lithium storage battery pack (3); the battery bus bar PP1 and the generator bus bar PP2 are independent of each other in a normal power supply state.
8. The low-voltage power supply system of the ultra-light helicopter of claim 4,
when the power supply system is in an emergency power supply state, the generator contactor (7) is in a disconnection state;
when a 14V direct-current power generation system composed of the 1200VA alternating-current generator (1) and the power converter (2) has a fault, the connecting unloading contactor (9) acts to be closed, the load on the unloading bus bar PP3 stops supplying power, and the generator bus bar PP2 supplies emergency power through the normally closed contact of the connecting unloading contactor (9) and the storage battery bus bar PP 1.
9. The low-voltage power supply system of the ultra-light helicopter of claim 8,
when a 14V direct current power generation system consisting of a 250VA alternating current generator (4) and a rectifier (5) fails, the storage battery bus bar PP1 provides emergency power supply by a 12V/15Ah lithium storage battery pack (3).
10. The low-voltage power supply system of the ultra-light helicopter of claim 4,
when the power supply system is in a starting power supply state, the control switch controls the storage battery contactor (8) to be attracted; when the engine is started, the 12V/15Ah lithium storage battery pack (3) supplies power to the storage battery bus bar PP1 and the generator bus bar PP2 at the same time, the engine control system supplies power to the storage battery bus bar PP1, and the rest emergency loads are supplied with power to the generator bus bar PP 2; and after the starting is finished, switching on a direct current power generation system on the machine, and thus, switching into a normal power supply state.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114123475A (en) * | 2021-11-03 | 2022-03-01 | 哈尔滨哈飞航空工业有限责任公司 | Self-adaptive control power distribution system and method |
| CN114172251A (en) * | 2021-11-12 | 2022-03-11 | 天津航空机电有限公司 | Power distribution system of small and medium-sized unmanned helicopter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114123475A (en) * | 2021-11-03 | 2022-03-01 | 哈尔滨哈飞航空工业有限责任公司 | Self-adaptive control power distribution system and method |
| CN114123475B (en) * | 2021-11-03 | 2023-06-23 | 哈尔滨哈飞航空工业有限责任公司 | Self-adaptive control power distribution system and method |
| CN114172251A (en) * | 2021-11-12 | 2022-03-11 | 天津航空机电有限公司 | Power distribution system of small and medium-sized unmanned helicopter |
| CN114172251B (en) * | 2021-11-12 | 2023-11-21 | 天津航空机电有限公司 | Small and medium-sized unmanned helicopter power distribution system |
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