CN112173140B - On-board contactless light-weight distributed power distribution structure and method - Google Patents
On-board contactless light-weight distributed power distribution structure and method Download PDFInfo
- Publication number
- CN112173140B CN112173140B CN201910599747.6A CN201910599747A CN112173140B CN 112173140 B CN112173140 B CN 112173140B CN 201910599747 A CN201910599747 A CN 201910599747A CN 112173140 B CN112173140 B CN 112173140B
- Authority
- CN
- China
- Prior art keywords
- power distribution
- tru
- bus bar
- sspc
- transformer rectifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D41/00—Power installations for auxiliary purposes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D2221/00—Electric power distribution systems onboard aircraft
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Abstract
The invention discloses a contactless light-weight distributed power distribution structure and a contactless light-weight distributed power distribution method on a power machine. The conventional transformer rectifier TRU, dc bus bar and coupling contactor for dc bus bar in the primary switchboard are eliminated. The TRU function is integrated inside the RPDU, the two RPDUs are configured in groups, and the middle uses the SSPC as a junction switch. When one TRU fails, power can be taken from the TRU output of the other RPDU, and the power supply reliability is improved. Meanwhile, on the input side of the TRU, the power input current is also reduced due to the distributed power distribution, and SSPC can be used instead. The current specification of the distribution device of the whole machine is smaller than 50A, the current specification of the distribution device of the whole machine can be reused with the mature SSPC technology in the industry, and technical risks cannot be brought under a new power grid architecture. The whole-machine contactless power distribution is realized, meanwhile, a distribution board box is omitted, and the whole weight of the aircraft is greatly reduced.
Description
Technical Field
The invention relates to the field of onboard power distribution, in particular to an onboard contactless lightweight distributed power distribution structure and method.
Background
Referring to FIG. 1, two TRUs (Transformer Rectifier Unit, TRU1 and TRU 2) are included for converting 115VAC/235VAC electricity from the generator to 28VDC for powering the corresponding bus bars 28VDC Bus1 and 28VDC Bus2. RPDUs (Remote Power Distribution Unit, 14 in total) distributed throughout the aircraft draw power from the two bus bars (via 50A long wires, i.e. power input feeders) respectively, powering the load by means of several SSPC (Solid State Power Controller). The source end of the input power feeder is provided with a breaker protection (50A breaker matched with the current specification of the protected wire). The two contactors coupling the two bus bars 28vdc Bus1 and 28vdc Bus2 are controlled by the BPCU, and in a normal case, the two contactors are in a normally closed state. When the BPCU detects that a certain TRU is overloaded, the two contactors are controlled to open to isolate the fault. The reason for selecting two contactors is to avoid a single point failure of the contactors, and when two bus bars need to be disconnected, if one contactor contact sticks and cannot be separated, only one contactor is disconnected, the two bus bars will be disconnected. TRU, 28VDC Bus, junction contactor, and protection circuit breaker for 50A power feeder are all arranged in the distribution panel box (power panel 1 and power panel 2).
The contactor is an electromechanical device with contacts, and the reliability is not high. In aircraft, contact breaking is not successful and power distribution faults occur.
While SSPCs have been in use for decades, current applications are limited to low current (less than 50A) applications, where contactors remain the dominant. For example, the aforementioned coupling contactor for the 28VDC bus is still currently used because of the large current output of the TRU at 350A. Another problem with the use of contactors is the need for a corresponding switchboard box to provide the structural fixing, power input, heat dissipation, etc. functions of the contactor, which in turn introduces additional weight overhead.
Disclosure of Invention
The invention aims to cancel contactor contacts with lower reliability on a machine and cancel a primary distribution board box. The novel on-board contactless light-weight distributed power distribution structure is provided while the power distribution reliability is improved and the overall weight of an airplane is reduced.
In order to achieve the purpose, the technical scheme of the invention is as follows: an on-board contactless lightweight distributed power distribution structure comprising,
an alternating current bus bar; the method comprises the steps of,
a plurality of secondary power distribution device groups distributed on the machine everywhere, wherein the secondary power distribution device RPDU group is provided with a first side secondary power distribution device RPDU and a second side secondary power distribution device RPDU;
the first side secondary power distribution device RPDU is provided with at least a first side microprocessor uP, a first side transformer rectifier TRU, a first side direct current bus bar and a first side solid state power controller SSPC, wherein the input end of the first side transformer rectifier TRU is connected with the output end of the alternating current bus bar, the output end of the first side transformer rectifier TRU is respectively connected with the input end of the first side direct current bus bar and the first end of the first side solid state power controller SSPC, and the control end of the first side solid state power controller SSPC is used for receiving a control signal from the first side microprocessor uP;
the second-side secondary power distribution device RPDU at least has a second-side microprocessor uP, a second-side transformer rectifier TRU, a second-side direct current bus bar and a second-side solid-state power controller SSPC, wherein an input end of the second-side transformer rectifier TRU is connected with an output end of the alternating current bus bar, an output end of the first-side transformer rectifier TRU is respectively connected with an input end of the second-side direct current bus bar and a first end of the second-side solid-state power controller SSPC, and a control end of the second-side solid-state power controller SSPC is used for receiving a control signal from the second-side microprocessor uP;
wherein the second end of the first side solid state power controller SSPC is terminated to the second end of the second side solid state power controller SSPC;
wherein the first side microprocessor uP is in communication with the second side microprocessor uP.
As a preferred embodiment of the on-board contactless lightweight distributed power distribution structure, the AC bus bar is 115VAC/235VAC bus.
As a preferred scheme of the on-board contactless lightweight distributed power distribution structure, the first side direct current bus bar and the second side direct current bus bar are both 28VDC bus.
As a preferable scheme of the on-board contactless lightweight distributed power distribution structure, the number of the secondary power distribution device groups is 7.
As a preferable scheme of the on-board contactless lightweight distributed power distribution structure, the capacity of the first side transformer rectifier TRU and the second side transformer rectifier TRU is 1.4kW.
The invention also discloses a contactless light-weight distributed power distribution method on the power machine, which comprises the following steps,
step S1, canceling a transformer rectifier TRU, a direct current bus bar and a connecting contactor for the direct current bus bar in a primary distribution board box;
step S2, integrating a transformer rectifier TRU and a direct current bus bar into a secondary power distribution device RPDU; the method comprises the steps of,
step S3, using the solid state power controller SSPC as a junction contactor for the dc bus.
Compared with the prior art, the invention has the beneficial effects that: and the power supply reliability is improved. At the same time, on the input side of the TRU, the power input current is also reduced due to the distributed power distribution, and SSPCs can be used instead. The current specification of the distribution device of the whole machine is smaller than 50A, the current specification of the distribution device of the whole machine can be reused with the mature SSPC technology in the industry, and technical risks cannot be brought under a new power grid architecture.
In addition to the technical problems, features constituting the technical solutions and advantageous effects brought about by the technical features of the technical solutions described above, other technical problems that the present invention can solve, other technical features included in the technical solutions and advantageous effects brought about by the technical features, further detailed descriptions will be made in connection with the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of a prior art structure.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of another embodiment of the present invention.
Fig. 4 is a schematic diagram of a solid state power controller SSPC in accordance with another embodiment of the present invention.
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings of specific embodiments. The description of these embodiments is provided to assist understanding of the present invention, but is not to be construed as limiting the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 2, an on-board contactless lightweight distributed power distribution structure is shown. The conventional transformer rectifier TRU, dc bus bar and coupling contactor for dc bus bar in the primary switchboard are eliminated. The TRU function is integrated inside the RPDU, the two RPDUs are configured in groups, and the middle uses the SSPC as a junction switch. When one TRU fails, power can be taken from the TRU output of the other RPDU, and the power supply reliability is improved. Meanwhile, on the input side of the TRU, the power input current is also reduced due to the distributed power distribution, and SSPC can be used instead. The current specification of the distribution device of the whole machine is smaller than 50A, the current specification of the distribution device of the whole machine can be reused with the mature SSPC technology in the industry, and technical risks cannot be brought under a new power grid architecture. The whole-machine contactless power distribution is realized, meanwhile, a distribution board box is omitted, and the whole weight of the aircraft is greatly reduced.
Specifically, the on-board contactless lightweight distributed power distribution structure is mainly composed of an alternating current bus bar and a plurality of secondary power distribution device groups distributed at all positions on the on-board.
The secondary power distribution unit RPDU group has a first-side secondary power distribution unit RPDU2 and a second-side secondary power distribution unit RPDU3.
The first-side secondary power distribution device RPDU2 has at least one first-side microprocessor uP21, one first-side transformer rectifier TRU22, one first-side dc bus 23 and one first-side solid-state power controller SSPC24. An input of the first side transformer rectifier TRU22 is connected to an output of the ac bus. The output end of the first side transformer rectifier TRU22 is connected to the input end of the first side dc bus 23 and the first end of the first side solid state power controller SSPC24, respectively. The control end of the first side solid state power controller SSPC is configured to receive a control signal from the first side microprocessor uP 21.
The second-side secondary power distribution device RPDU3 has at least one second-side microprocessor uP31, one second-side transformer rectifier TRU32, one second-side dc bus 33, and one second-side solid-state power controller SSPC34. An input of the second side transformer rectifier TRU32 is connected to an output of the ac bus. The output end of the first side transformer rectifier TRU22 is connected to the input end of the second side dc bus 33 and the first end of the second side solid state power controller SSPC34, respectively. The control end of the second-side solid state power controller SSPC is configured to receive a control signal from the second-side microprocessor uP 31.
Wherein a second end of the first side solid state power controller SSPC24 terminates a second end of the second side solid state power controller SSPC34.
Wherein the first side microprocessor uP21 is in communication with the second side microprocessor uP 31. In this embodiment, the first side microprocessor uP21 and the second side microprocessor uP31 are in communication connection through a CAN bus.
In this embodiment, the AC bus is 115VAC/235VAC bus.
In this embodiment, the first side dc bus 23 and the second side dc bus 33 are 28VDC bus.
In this embodiment, the number of secondary distribution device groups is 7 (14 RPDUs are equipped with 14 TRUs). The capacity of each TRU is only 1.4kW. Therefore, the bidirectional throughput of the first side solid state power controller SSPC (the second side solid state power controller SSPC) is 50A, and the mature technology of the present in-service aircraft can be reused.
In a normal state, the first side solid state power controller SSPC24 and the second side solid state power controller SSPC34 are both in a closed state. When the first side microprocessor uP21 (the second side microprocessor uP 31) detects that the first side transformer rectifier TRU22 (the second side transformer rectifier TRU 32) is overloaded, the first side microprocessor uP21 (the second side microprocessor uP 31) controls the first side solid state power controller SSPC (the second side solid state power controller SSPC) to be turned off and simultaneously sends a trip message to the second side microprocessor uP31 (the first side microprocessor uP 21) through a CAN bus, and the opposite side switch is tripped.
It should be noted that the positional shifting of the first side transformer rectifier TRU22, the second side transformer rectifier TRU32, the first side dc bus bar 23, the second side dc bus bar 33, the first side solid state power controller SSPC24, the second side solid state power controller SSPC34 is not a simple redistribution of the aircraft overall weight, but rather a smart design of the weight-reduced aircraft overall weight by means of distributed power distribution.
The first weight loss route: in the original centralized power distribution architecture, the capacity of one TRU is 10kW, and forced air cooling is required. As described above, TRUs (14 RPDUs are equipped with 14 TRUs) are distributed in the prior art, and each TRU has a capacity of only 1.4kW, generates less heat, and can use natural heat dissipation, so that facilities such as fans and ventilation pipes in the original switchboard box are omitted, and the weight reduction effect is achieved.
The second weight loss pathway: the first side dc bus bar 23 (the second side dc bus bar 33) is distributed into the first side secondary power distribution device RPDU2 (the second side secondary power distribution device RPDU 3). At this time, since the power feeder line is shortened (unlike in the conventional scheme, a 50A long wire is required), a protection circuit breaker is no longer required between the first side dc bus bar 23 (the second side dc bus bar 33) and the first side solid state power controller SSPC (the second side solid state power controller SSPC), thereby saving this part of weight.
The third weight loss pathway: the power input feeder voltage from the alternating current bus bar to the first side secondary power distribution device RPDU2 (the second side secondary power distribution device RPDU 3) is increased from 28VDC to 115VAC/235VAC, so that the current required for transmitting the same power is reduced, the original 50A is reduced to 15A/7.5A, and the wire diameter is reduced, so that the weight is reduced.
In other embodiments, referring to fig. 3, the ac bus input feed also employs SSPCs as the switch, multiplexing with a conventional SSPC design (see fig. 4).
While only embodiments of the invention have been shown and described in detail, it is not intended that the scope of the invention be limited thereby. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (5)
1. The on-board contactless light-weight distributed power distribution structure is characterized by comprising,
an alternating current bus bar; the method comprises the steps of,
a plurality of secondary power distribution device groups distributed on the machine everywhere, wherein the secondary power distribution device groups are provided with a first side secondary power distribution device RPDU and a second side secondary power distribution device RPDU;
the first side secondary power distribution device RPDU is provided with at least a first side microprocessor uP, a first side transformer rectifier TRU, a first side direct current bus bar and a first side solid state power controller SSPC, wherein the input end of the first side transformer rectifier TRU is connected with the output end of the alternating current bus bar, the output end of the first side transformer rectifier TRU is respectively connected with the input end of the first side direct current bus bar and the first end of the first side solid state power controller SSPC, and the control end of the first side solid state power controller SSPC is used for receiving a control signal from the first side microprocessor uP;
the second-side secondary power distribution device RPDU at least has a second-side microprocessor uP, a second-side transformer rectifier TRU, a second-side direct current bus bar and a second-side solid-state power controller SSPC, wherein an input end of the second-side transformer rectifier TRU is connected with an output end of the alternating current bus bar, an output end of the first-side transformer rectifier TRU is respectively connected with an input end of the second-side direct current bus bar and a first end of the second-side solid-state power controller SSPC, and a control end of the second-side solid-state power controller SSPC is used for receiving a control signal from the second-side microprocessor uP;
wherein the second end of the first side solid state power controller SSPC is terminated to the second end of the second side solid state power controller SSPC;
wherein the first side microprocessor uP is in communication with the second side microprocessor uP.
2. The on-board contactless lightweight distributed power distribution structure according to claim 1, wherein the ac bus bar is 115VAC/235VAC bus.
3. The on-board contactless lightweight distributed power distribution structure according to claim 1, wherein the first side dc bus bar and the second side dc bus bar are both 28VDC bus.
4. The on-board contactless lightweight distributed power distribution structure according to claim 1, wherein the number of secondary power distribution device groups is 7.
5. The on-board contactless lightweight distributed power distribution structure according to claim 4, wherein the capacity of the first side transformer rectifier TRU and the second side transformer rectifier TRU is 1.4kW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910599747.6A CN112173140B (en) | 2019-07-04 | 2019-07-04 | On-board contactless light-weight distributed power distribution structure and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910599747.6A CN112173140B (en) | 2019-07-04 | 2019-07-04 | On-board contactless light-weight distributed power distribution structure and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112173140A CN112173140A (en) | 2021-01-05 |
| CN112173140B true CN112173140B (en) | 2023-07-11 |
Family
ID=73915102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910599747.6A Active CN112173140B (en) | 2019-07-04 | 2019-07-04 | On-board contactless light-weight distributed power distribution structure and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112173140B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5815389A (en) * | 1996-10-03 | 1998-09-29 | Reltec Corporation | System level current limiting |
| CN101610005A (en) * | 2009-07-08 | 2009-12-23 | 浙江中控电子技术有限公司 | A kind of electrical control method and system |
| CN104079079A (en) * | 2014-07-14 | 2014-10-01 | 南京矽力杰半导体技术有限公司 | Resonance type non-contact power supply device, integrated circuit and constant voltage control method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002027892A1 (en) * | 2000-09-28 | 2002-04-04 | Youtility Inc | Local area grid for distributed power |
| US9325170B2 (en) * | 2013-02-01 | 2016-04-26 | Hamilton Sundstrand Corporation | Matrix-based power distribution architecture |
-
2019
- 2019-07-04 CN CN201910599747.6A patent/CN112173140B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5815389A (en) * | 1996-10-03 | 1998-09-29 | Reltec Corporation | System level current limiting |
| CN101610005A (en) * | 2009-07-08 | 2009-12-23 | 浙江中控电子技术有限公司 | A kind of electrical control method and system |
| CN104079079A (en) * | 2014-07-14 | 2014-10-01 | 南京矽力杰半导体技术有限公司 | Resonance type non-contact power supply device, integrated circuit and constant voltage control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112173140A (en) | 2021-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8723354B2 (en) | Electrical power control system for a vehicle | |
| US7800245B2 (en) | Method and architecture for reduction in vehicle wiring | |
| CN112600195B (en) | Bus bar power controller-based aircraft power distribution system control architecture | |
| RU2596046C1 (en) | Alternate current traction substation for supply of traction loads 25 kv | |
| CN112173140B (en) | On-board contactless light-weight distributed power distribution structure and method | |
| CN102931587A (en) | Security power supply and distribution truck | |
| EP3101750A1 (en) | High power solid state switches for aircraft | |
| CN211127291U (en) | Helicopter direct current distribution system | |
| CN202906202U (en) | Distribution vehicle for ensuring power supply | |
| CN103036304B (en) | Alternating current power supply system for substation | |
| CN101488667A (en) | Power supply method for large sponge titanium smelting total transforming plant | |
| CN106004448A (en) | High-voltage loop natural insulation and double-main-breaker redundant circuit system for electric locomotive | |
| CN114039426B (en) | Intelligent solid-state power distribution network and power distribution method based on aircraft | |
| CN205601632U (en) | Redundant circuit system of electric locomotive high pressure is kept apart to disconnected nature of two owners | |
| CN108899911B (en) | Direct current power transformation system | |
| CN210724305U (en) | Fault guiding safety device, power utilization safety system, multi-path power utilization safety system and automatic bus transfer interlocking control system | |
| CN110861539A (en) | Main wiring structure of hub traction substation | |
| CN112467715A (en) | Distributed power distribution and grounding method for spacecraft | |
| CN216086256U (en) | Automatic power switching system | |
| CN211223112U (en) | Main wiring structure of hub traction substation | |
| CN111890997B (en) | Main wiring of section station of electrified railway traction power supply system | |
| CN117439022B (en) | Distribution board box protection structure and protection method | |
| CN114348279A (en) | General aircraft distribution device | |
| CN106882084B (en) | Main wiring structure of high-speed rail transformer station based on three single-phase traction transformers | |
| CN110635480A (en) | Bus-tie interval capable of realizing interconnection of three buses and use method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |