CN213083463U - Electric ship power system with distributed structure - Google Patents
Electric ship power system with distributed structure Download PDFInfo
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- CN213083463U CN213083463U CN202022238940.8U CN202022238940U CN213083463U CN 213083463 U CN213083463 U CN 213083463U CN 202022238940 U CN202022238940 U CN 202022238940U CN 213083463 U CN213083463 U CN 213083463U
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Abstract
The utility model discloses an electric ship driving system of distributing type structure, include: an energy storage battery for providing an electric power source for the electric ship; the electric control unit sends out PWM signals and enable signals according to control actions provided by a controller; the distributed motors drive the electric ship to work; the distributed motor controller converts direct current provided by the energy storage battery into a control instruction of alternating current according to a PWM signal and an enabling signal provided by the electric control unit, and is respectively and electrically connected with the energy storage battery, the distributed motor and the electric control unit; the distributed motor controller includes: the control unit is electrically connected with the electric control unit; and the inversion unit is electrically connected with the energy storage battery, the distributed motor and the control unit respectively and converts direct current provided by the energy storage battery into alternating current according to a control instruction provided by the control unit. The utility model has the advantages of simple integral structure, less fault points which can occur.
Description
Technical Field
The utility model relates to an electric ship driving system of distributing type structure.
Background
The traditional ship is mainly a diesel engine power system no matter in inland rivers or offshore regions, and due to the fact that the technical grade of the traditional ship is low, a large amount of oily water, harmful gas and particles can be generated in the process of sailing and harboring, noise pollution is serious, and the ecological environment of a water area is seriously affected. Therefore, the electric ship with low energy consumption, zero emission, low noise and no pollution becomes an important path for realizing energy conservation and emission reduction and ship system transformation and upgrading, and is valued by various social circles.
In the face of increasing pressure of energy conservation and emission reduction of the shipping industry, ports of many countries in the world have implemented strict ship emission standards, and the direction of ship manufacturing to electromotion is driven to change. Up to now, some regions have even come out of relevant policies to promote the motorization of ships.
However, because of the large water resistance encountered by a ship during navigation, the power system of the ship generally requires high power and high torque, but has low requirements on the speed. Therefore, many solutions have been developed based on vehicle transmission technology. However, this solution has the following disadvantages:
1, the structure is relatively complex, the number of fault points is more, and the potential cost is higher due to the fact that ship rescue is more complex and higher in cost than vehicle rescue;
2, although the gearbox solution can reduce the power of the motor and reduce the size of the motor, the added mechanical system and control system basically offset the total cost of the system;
3, because of the particularity of the system structure, the customization is mainly used, and the universality of the technology is reduced;
4, the power part of the system is a centralized structure, and if the power system fails, the power of the whole ship is lost.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electric ship driving system of distributed architecture that overall structure is simple, the fault point that probably appears is few.
An electric boat power system of a distributed architecture comprising:
an energy storage battery for providing an electric power source for the electric ship;
the electric control unit sends out PWM signals and enable signals according to control actions provided by a controller;
the distributed motors drive the electric ship to work;
the distributed motor controller converts direct current provided by the energy storage battery into a control instruction of alternating current according to a PWM signal and an enabling signal provided by the electric control unit, and is respectively and electrically connected with the energy storage battery, the distributed motor and the electric control unit;
the distributed motor controller includes:
the control unit is electrically connected with the electric control unit;
and the inversion unit is electrically connected with the energy storage battery, the distributed motor and the control unit respectively and converts direct current provided by the energy storage battery into alternating current according to a control instruction provided by the control unit.
The utility model has the advantages that:
1. the whole structure is simple, and possible fault points are fewer;
2. and a universal motor and a universal controller are selected, so that the cost is reduced, and the after-sale service difficulty is reduced. Due to the adoption of a universal product, the cost provided by the dual-power system is lower than that provided by the concentration of the same parameters;
3. because the double systems are completely independent, even if one system fails, the other system can output half of the total power, which is enough for emergency use.
Drawings
FIG. 1 is a block diagram of an electric marine power system in a distributed configuration;
FIG. 2 is a block diagram of the connection of the distributed motor controller to other units;
FIG. 3 is a schematic diagram of the connection of the distributed motor controller to other units;
FIG. 4 is an enlarged view of the portion P of FIG. 3;
fig. 5 is an enlarged view of a portion I in fig. 3.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
An electric ship power system with a distributed structure comprises an energy storage battery 1, an electric control unit 2, a distributed motor 3 and a distributed motor controller 4, and the following parts and the relationship among the parts are explained in detail:
the energy storage battery 1 provides a power source for the electric ship, and based on the safety problem of the ship, the energy storage battery 1 in the embodiment preferentially adopts a lithium iron phosphate battery to provide a high-voltage direct-current power supply for the distributed motor controller.
The electric control unit 2 sends out a PWM signal and an enable signal according to a control action provided by an operator, the operator usually controls the accelerator handle through a rudder or a handle to realize the control, and the control is embodied in controlling the rotating speed, the torque and the power of the distributed motor 3, therefore, the electric control unit 2 sends out parameter instructions for controlling the rotating speed, the torque and the power of the distributed motor 3 after receiving the control action, and the instructions are output to the distributed motor controller 4 as the PWM signal and the enable signal, and are output to the distributed motor 3 after being processed by the distributed motor controller 4. In the present embodiment, an ECU (electronic control unit) is preferably used as the electric control unit 2.
The distributed motor 3 drives the electric ship to work, and the distributed motor 3 in the embodiment adopts an alternating current motor which drives the electric ship to work through a three-phase power supply. In this embodiment, there are two sets of distributed motors 3 with completely consistent parameters but independent from each other, and the electric ship is driven to operate according to the electric energy output by the corresponding distributed motor controller 4.
The distributed motor controller 4 converts direct current provided by the energy storage battery 1 into alternating current according to the PWM signal and the enabling signal provided by the electric control unit 2, and the distributed motor controller 4 is electrically connected with the energy storage battery 1, the distributed motor 3 and the electric control unit 2 respectively. In the present embodiment, there are two sets of distributed motor controllers 4 with completely consistent parameters but independent from each other, and electric energy is input to the corresponding distributed motors 3 according to the control command of the electric control unit 2, so that the present embodiment is a dual-power driving system.
The distributed motor controller 4 comprises a control unit 40 and an inverter unit 41, the control unit 40 is electrically connected with the electric control unit 2, the inverter unit 41 is electrically connected with the energy storage battery 1, the distributed motor 3 and the control unit 2 respectively, and the inverter unit 41 converts direct current provided by the energy storage battery 1 into alternating current according to a control instruction provided by the control unit 40. The control unit 40 is electrically connected to the inverter unit 41 through a first connector J1. The control unit 40 is a microcontroller, such as a single chip microcomputer, and the control unit 40 may also be a PLC. The inverter unit 41 is composed of a plurality of IGBTs, and the control unit 40 controls the switching or on-time of the IGBTs, not only converts direct current into alternating current, but also controls the magnitude of output current, thereby realizing the control of the rotational speed, torque and power of the distributed motor 3.
The electric ship power system of this embodiment further includes hall sensor 5 for collecting an alternating current signal, an input end of hall sensor 5 is connected with an output end of inverter unit 41, distributed motor controller 4 further includes an alternating current signal processing unit 42, an input end of alternating current signal processing unit 42 is electrically connected with an output end of hall sensor 5, and an output end of alternating current signal processing unit 42 is connected with an input end of control unit 40. The hall sensor 5 is electrically connected to the alternating current signal processing unit 42 through a fifth connector J5. In this embodiment, the hall sensor 5 preferably employs a hall current sensor to collect an electrical signal at the output end of the inverter unit 41, the alternating current signal processing unit 42 employs an analog-to-digital converter, an analog signal employed by the hall sensor 5 is converted into a digital signal by the analog-to-digital converter to be provided to the control unit 40, and the control unit 40 determines whether the voltage or current output by the inverter unit 41 is normal.
The electric ship power system of this embodiment also includes battery management unit 6, and battery management unit 6 is connected with the output of energy storage battery 1, and battery management unit 6 monitors each submodule piece of energy storage battery 1, prevents it from overcharging or overdischarging to according to monitoring information, send information to the electric control unit, in this embodiment, battery management unit 6 adopts BMS battery system preferentially. Under the condition that the battery management unit 6 does not report a fault to the control unit 40, after the electric control unit 2 obtains a signal provided by an accelerator handle to send out a PWM signal and an enable signal, the control unit 40 sends out a switching instruction to the inverter unit 41 according to the PWM signal and the enable signal to control parameter instructions of the rotating speed, the torque and the power of the distributed motor 3. The distributed motor controller 4 further includes a dc signal processing unit 43, an input end of the dc signal processing unit 43 is electrically connected to an output end of the battery management unit 6, and an output end of the dc signal processing unit 43 is connected to an input end of the control unit 40. The battery management unit 6 collects the direct current signal output by the energy storage battery 1 and provides the direct current signal to the direct current signal processing unit 43, the direct current signal processing unit 43 performs filtering processing and provides the filtered direct current signal to the control unit 40, and the control unit 40 judges whether the charging and discharging of the energy storage battery 1 are normal.
The electric ship power system of the embodiment further comprises an encoder 7 for collecting the angular displacement of the distributed motor, the distributed motor controller 4 further comprises an encoder electric signal processing unit 44, the output end of the encoder 7 is electrically connected with the input end of the encoder electric signal processing unit 44, and the output end of the encoder electric signal processing unit 44 is connected with the input end of the control unit 40. The encoder electrical signal processing unit 44 may be a transducer, and converts the electrical signal output by the encoder 7 into an electrical signal of 4-20mA and provides the electrical signal to the control unit 40, and the control unit 40 determines whether the angular displacement of the distributed motor 3 is normal.
The distributed motor controller 4 further includes an energy storage capacitor 45, and the energy storage capacitor 45 is electrically connected to the input end of the inverter unit 41. During normal operation, the energy storage capacitor 45 is charged by the energy storage battery 1, and when the energy storage battery 1 is powered off, the energy storage capacitor 45 discharges to provide electric energy for the inverter unit 41 and other units, so as to provide buffering for system power-off.
Claims (7)
1. An electric ship power system of a distributed structure, comprising:
an energy storage battery for providing an electric power source for the electric ship;
the electric control unit sends out PWM signals and enable signals according to control actions provided by a controller;
the distributed motors drive the electric ship to work;
the distributed motor controller converts direct current provided by the energy storage battery into a control instruction of alternating current according to a PWM signal and an enabling signal provided by the electric control unit, and is respectively and electrically connected with the energy storage battery, the distributed motor and the electric control unit;
the distributed motor controller includes:
the control unit is electrically connected with the electric control unit;
and the inversion unit is electrically connected with the energy storage battery, the distributed motor and the control unit respectively and converts direct current provided by the energy storage battery into alternating current according to a control instruction provided by the control unit.
2. The electric ship power system with the distributed structure according to claim 1, further comprising a hall sensor for collecting an alternating current signal, wherein an input end of the hall sensor is connected with an output end of the inverter unit;
the distributed motor controller further comprises an alternating current signal processing unit, the input end of the alternating current signal processing unit is electrically connected with the output end of the Hall sensor, and the output end of the alternating current signal processing unit is connected with the input end of the control unit.
3. The electric ship power system with the distributed structure according to claim 1, further comprising a battery management unit, wherein the battery management unit is connected with an output end of the energy storage battery;
the distributed motor controller further comprises a direct current signal processing unit, the input end of the direct current signal processing unit is electrically connected with the output end of the battery management unit, and the output end of the direct current signal processing unit is connected with the input end of the control unit.
4. The electric ship power system with a distributed structure as claimed in claim 1, further comprising an encoder for collecting the angular displacement of the distributed motors;
the distributed motor controller further comprises an encoder electric signal processing unit, the output end of the encoder is electrically connected with the input end of the encoder electric signal processing unit, and the output end of the encoder electric signal processing unit is connected with the input end of the control unit.
5. The electric ship power system with a distributed structure according to claim 1, wherein the distributed motor controller further comprises an energy storage capacitor, and the energy storage capacitor is electrically connected with the input end of the inverter unit.
6. The electric boat power system of a distributed architecture of claim 1, wherein the inverter unit is comprised of a plurality of IGBTs.
7. The electric ship power system with a distributed structure as claimed in claim 1, wherein the number of the distributed motors is two and the parameters are consistent, and the number of the distributed motor controllers is two and the parameters are consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022238940.8U CN213083463U (en) | 2020-10-10 | 2020-10-10 | Electric ship power system with distributed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022238940.8U CN213083463U (en) | 2020-10-10 | 2020-10-10 | Electric ship power system with distributed structure |
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| Publication Number | Publication Date |
|---|---|
| CN213083463U true CN213083463U (en) | 2021-04-30 |
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| CN202022238940.8U Active CN213083463U (en) | 2020-10-10 | 2020-10-10 | Electric ship power system with distributed structure |
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| CN (1) | CN213083463U (en) |
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- 2020-10-10 CN CN202022238940.8U patent/CN213083463U/en active Active
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