CN210416940U - Marine power system for water quality monitoring - Google Patents
Marine power system for water quality monitoring Download PDFInfo
- Publication number
- CN210416940U CN210416940U CN201921113233.7U CN201921113233U CN210416940U CN 210416940 U CN210416940 U CN 210416940U CN 201921113233 U CN201921113233 U CN 201921113233U CN 210416940 U CN210416940 U CN 210416940U
- Authority
- CN
- China
- Prior art keywords
- direct current
- daily
- ship
- inverter
- battery pack
- 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
Landscapes
- Inverter Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a marine power system of water quality monitoring, including the battery system, the battery system connects the direct current drive cabinet, the direct current drive cabinet connects the ship propulsion motor and the daily load of the ship, the battery system is also provided with the charging interface for connecting the bank electricity to charge; when the ship sails, the direct current converter and the propulsion inverter in the direct current driving cabinet provide electric energy for the ship propulsion motor, and meanwhile, the daily inverter and the daily transformer provide electric energy for daily loads. After the ship is landed, 2 sets of battery packs are charged through a shore power alternating current power supply, an AFE rectifier and a direct current converter. According to the scheme, the pure battery is used as a ship power source, zero emission and zero pollution are realized, and the environmental protection requirement is met. And an electric energy management system is arranged, so that the electric energy utilization rate is improved, and the energy-saving requirement is met.
Description
Technical Field
The utility model relates to a marine driving system of water quality monitoring adopts the battery as the only power supply of whole ship.
Background
The power system of a small vessel generally adopts the following modes: the propulsion system is driven by a diesel engine, and the daily electric equipment of the whole ship is supplied with power by a diesel generator set through alternating current distribution equipment. The diesel engine emission pollutes the environment, so a ship power system which takes electric drive as the only energy source needs to be specially designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the problem that exists among the prior art is overcome, a marine driving system of water quality monitoring is provided.
In order to solve the above problems, the technical solution of the present invention is as follows:
a power system for a water quality monitoring ship comprises a battery pack system, wherein the battery pack system is connected with a direct current driving cabinet, the direct current driving cabinet is connected with a ship propulsion motor and a daily load of the ship, and the battery pack system is also provided with a charging interface for connecting shore power for charging;
the direct current driving cabinet is provided with an LDC filter and a direct current converter which are sequentially connected with the battery pack system; the direct current converter and the LDC filter are used for controlling charging and discharging of the battery pack system;
the direct current driving cabinet is also provided with an LCL filter and an AFE rectifier which are sequentially connected with the charging interface; the AFE rectifier and the LCL filter are used for rectifying the shore power alternating current into direct current to charge the battery pack; the AFE rectifier is connected with the direct current converter through a circuit;
the direct current driving cabinet is also provided with a propulsion inverter and a daily inverter, and the propulsion inverter and the daily inverter are connected with the direct current converter through a circuit.
The battery pack system comprises 2 sets of direct current driving cabinets, 2 sets of direct current driving cabinets and 2 propelling motors, wherein the 2 sets of direct current driving cabinets are connected with each other through direct current cables.
The direct current converter, the AFE rectifier, the propulsion inverter and the daily inverter are provided with fuses for overload protection.
The daily inverter is connected with a daily transformer, and the daily transformer is connected with a daily distribution board.
Beneficial effect, the utility model discloses a this kind of clean energy of pure battery provides power for the propulsion system and other loads of small watercraft, can realize the requirement of small watercraft energy-conservation, environmental protection.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;
fig. 1 is a schematic diagram of a power system of a small ship according to the present invention.
LCL filter: the filter system is a third-order filter system and consists of a network side inductor (L), a filter capacitor (C) and a rectifier side inductor (L).
An AFE rectifier: active Front End rectifier. The AFE rectifier draws sine wave alternating current from a power grid, outputs direct current voltage after rectification, and keeps a required voltage value.
An LDC filter: a Direct current (Direct current) filter is a filter mainly used for blocking and short-circuiting alternating current signals, and can use an inductor (L) and a capacitor (C) for filtering to enable an output waveform to be more stable.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, the only power source for the present system is 2 battery packs. When the ship sails, the direct current converter and the propulsion inverter in the direct current driving cabinet provide electric energy for the ship propulsion motor, and meanwhile, the daily inverter and the daily transformer provide electric energy for daily loads. After the ship is landed, 2 sets of battery packs are charged through a shore power alternating current power supply, an AFE rectifier and a direct current converter.
The utility model discloses mainly constitute by following each unit:
the system comprises a battery system 1, a shore power box 2, a direct current converter 3, an AFE rectifier 4, a propulsion inverter 5, a daily inverter 6, a No. 1 direct current drive cabinet 7, a No. 2 direct current drive cabinet 8, a fuse 9, a propulsion motor 10, a No. 2 propulsion motor 10, a daily transformer 11 and a daily distribution board 12.
The utility model discloses the function explains as follows:
1) battery system
The utility model discloses a battery system 1 is by battery monomer, battery module, battery box, battery cluster, group battery and battery system step by step through the series-parallel connection constitution.
2) DC drive cabinet
The utility model discloses divide into No. 1 DC drive cabinet 7 and No. 2 DC drive cabinet 8, connect through DC cable between two DC drive cabinets, combine energy comprehensive management control can improve energy comprehensive utilization efficiency, improve the reliability and the redundancy of system.
Each direct current drive cabinet comprises 1 set of AFE rectifier 4, 1 set of direct current converter 3, 1 set of propulsion inverter 5 and 1 set of daily inverter 6.
The AFE rectifier 4 has the main function of rectifying the shore power ac power supply into the dc power required by the system in combination with the LCL filter 13 to supply the dc bus with power. The AFE rectifier 4 has the advantage of having little effect on the shore side grid, and has the functions of high power factor, low harmonic and lifting direct current voltage.
The dc converter 3 mainly functions to control charging and discharging of the battery pack. During charging, the direct current converter is combined with the LDC filter 14 to carry out voltage reduction chopping on the direct current to reach a voltage range required by charging of the battery pack, and constant current charging is carried out on the battery pack through a current instruction. During discharging, the direct current converter is combined with the LDC filter 14 to carry out boost chopper control on the low voltage of the battery side so as to raise the bus voltage, and the boost chopper control is used for providing direct current electric energy for the propulsion inverter 5 and the daily inverter 6. The direct current converter 3 has the advantages that the bidirectional charge and discharge control can be carried out on the high-power battery pack, and the characteristics of high charge and discharge current control precision, small direct current ripple, high redundancy and the like are achieved.
The propulsion inverter 5 has a main function of inverting the direct current on the direct current busbar into alternating current with variable frequency so as to drive the propulsion motor 10, and stepless speed regulation in the whole range of the propulsion motor 10 can be realized by an open-loop vector control method. By adopting a ship special control system program, the propulsion inverter 5 carries out rapid power limitation on the propulsion motor 10 according to the propulsion available power calculated by the propulsion control system in real time, and the reliability and the safety of the ship can be effectively improved.
The daily inverter 6 has the main function of inverting the direct current on the direct current busbar into three-phase alternating current which can be used by the daily distribution board 12, and is provided with a voltage acquisition card, and the acquired signal is used for voltage closed-loop control and can effectively control the stability of output voltage. By adopting the special control software for the micro-grid power supply and matching with the sine wave filter, perfect sine wave output can be ensured, the harmonic level of the power grid is strictly controlled within 5 percent, and the requirements of the classification society and the daily power consumption of the ship can be met. High-frequency common mode interference in the direct-current busbar system can be effectively isolated by the daily transformer 6 and conducted to a daily load side.
The direct current drive cabinet is provided with a fuse 9 for each frequency conversion module, and a fuse 9 (with a knife switch) is also arranged between connecting cables between the two sets of drive cabinets to complete the protection of system faults. Through reasonable fuse type selection, under the condition that a module has a short-circuit fault, a fuse closest to the fault module can be guaranteed to be firstly fused, the fault module is isolated, and the non-fault module recovers operation; under the condition that a bus or a connecting cable between two sets of driving cabinets has a fault, a fuse between the two sets of driving cabinets is firstly fused to isolate the fault bus, so that the whole ship is ensured not to lose power.
According to the scheme, the pure battery is used as a ship power source, zero emission and zero pollution are realized, and the environmental protection requirement is met. And an electric energy management system is arranged, so that the electric energy utilization rate is improved, and the energy-saving requirement is met.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A power system for a water quality monitoring ship comprises a battery pack system, wherein the battery pack system is connected with a direct current driving cabinet, the direct current driving cabinet is connected with a ship propulsion motor and a daily load of the ship, and the battery pack system is also provided with a charging interface for connecting shore power for charging; the method is characterized in that:
the direct current driving cabinet is provided with an LDC filter and a direct current converter which are sequentially connected with the battery pack system; the direct current converter and the LDC filter are used for controlling charging and discharging of the battery pack system;
the direct current driving cabinet is also provided with an LCL filter and an AFE rectifier which are sequentially connected with the charging interface; the AFE rectifier and the LCL filter are used for rectifying the shore power alternating current into direct current to charge the battery pack; the AFE rectifier is connected with the direct current converter through a circuit;
the direct current driving cabinet is also provided with a propulsion inverter and a daily inverter, and the propulsion inverter and the daily inverter are connected with the direct current converter through a circuit.
2. The marine power system for monitoring water quality according to claim 1, characterized in that: the battery pack system comprises 2 sets of direct current driving cabinets, 2 sets of direct current driving cabinets and 2 propelling motors, wherein the 2 sets of direct current driving cabinets are connected with each other through direct current cables.
3. The marine power system for monitoring water quality according to claim 1, characterized in that: the direct current converter, the AFE rectifier, the propulsion inverter and the daily inverter are provided with fuses for overload protection.
4. The marine power system for monitoring water quality according to claim 1, characterized in that: the daily inverter is connected with a daily transformer, and the daily transformer is connected with a daily distribution board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921113233.7U CN210416940U (en) | 2019-07-16 | 2019-07-16 | Marine power system for water quality monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921113233.7U CN210416940U (en) | 2019-07-16 | 2019-07-16 | Marine power system for water quality monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210416940U true CN210416940U (en) | 2020-04-28 |
Family
ID=70380958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921113233.7U Active CN210416940U (en) | 2019-07-16 | 2019-07-16 | Marine power system for water quality monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210416940U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585270A (en) * | 2020-05-29 | 2020-08-25 | 西安中车永电电气有限公司 | Marine direct-current grid-connected system and short-circuit protection simulation method thereof |
| CN113644723A (en) * | 2021-08-24 | 2021-11-12 | 西安中车永电电气有限公司 | Shipborne power distribution system with electromagnetic interference suppression function |
| CN113998090A (en) * | 2021-12-06 | 2022-02-01 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Power configuration system of battery power ship and ship |
-
2019
- 2019-07-16 CN CN201921113233.7U patent/CN210416940U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585270A (en) * | 2020-05-29 | 2020-08-25 | 西安中车永电电气有限公司 | Marine direct-current grid-connected system and short-circuit protection simulation method thereof |
| CN111585270B (en) * | 2020-05-29 | 2024-03-26 | 西安中车永电电气有限公司 | Marine direct current grid-connected system and simulation method for short-circuit protection of marine direct current grid-connected system |
| CN113644723A (en) * | 2021-08-24 | 2021-11-12 | 西安中车永电电气有限公司 | Shipborne power distribution system with electromagnetic interference suppression function |
| CN113998090A (en) * | 2021-12-06 | 2022-02-01 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Power configuration system of battery power ship and ship |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104065157B (en) | Uninterruptible power supply with improved power supply reliability | |
| CN210416940U (en) | Marine power system for water quality monitoring | |
| CN207801570U (en) | Energy storage type power supply vehicle of meet an emergency | |
| CN111591424B (en) | Power system of pure electric business boat | |
| CN201247964Y (en) | Power supply for variable pitch system | |
| CN202841003U (en) | Novel three-phase photovoltaic grid-connected inverter system structure | |
| CN112072716A (en) | Power distribution network terminal electric energy router and control method thereof | |
| CN105391164B (en) | Micro-capacitance sensor type uninterruptible power system | |
| CN210971490U (en) | Range-extended pure lithium battery power ship propulsion system | |
| CN210882568U (en) | Electric propulsion system for new energy ship | |
| CN111409807A (en) | Diesel-electric hybrid electric propulsion system for ship alternating current-direct current networking | |
| CN112072781A (en) | Emergency seamless switching system and method for full-water-cooling permanent magnet synchronous diesel generator set | |
| CN113162455B (en) | Power supply conversion device and short-circuit protection method thereof | |
| CN211001772U (en) | Marine pure battery propulsion system | |
| CN113644718A (en) | Electrical architecture and control method of pure electric pleasure boat driving system | |
| CN217642740U (en) | Drilling platform power supply system based on energy storage support | |
| CN201319509Y (en) | Full digital control three-phase input and output power frequency online UPS power supply | |
| CN201390606Y (en) | Vehicle-mounted transfer device for rubber-tyred container gantry crane | |
| CN202712938U (en) | High frequency chopping boost charging circuit | |
| CN211352054U (en) | Main circuit of constant-frequency voltage-stabilized power supply for ship | |
| CN210761246U (en) | Marine electric propulsion system | |
| CN207910525U (en) | A kind of pure electric vehicle AC power output system device peculiar to vessel | |
| CN111446736A (en) | Inversion emergency power supply device of wind turbine generator control system | |
| CN115498622B (en) | Direct-current integrated power system of electric-electric hybrid ship and control method | |
| CN214479794U (en) | Bidirectional charge and discharge device for MW-level storage battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |