CN113148093B - Power distribution method of parallel ship hybrid power system - Google Patents
Power distribution method of parallel ship hybrid power system Download PDFInfo
- Publication number
- CN113148093B CN113148093B CN202110436181.2A CN202110436181A CN113148093B CN 113148093 B CN113148093 B CN 113148093B CN 202110436181 A CN202110436181 A CN 202110436181A CN 113148093 B CN113148093 B CN 113148093B
- Authority
- CN
- China
- Prior art keywords
- natural gas
- gas engine
- power
- storage battery
- energy efficiency
- 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
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/20—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/21—Control means for engine or transmission, specially adapted for use on marine vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/20—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
- B63H2021/202—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units of hybrid electric type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/21—Control means for engine or transmission, specially adapted for use on marine vessels
- B63H2021/216—Control means for engine or transmission, specially adapted for use on marine vessels using electric control means
-
- 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
- Y02T70/00—Maritime or waterways transport
- Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
- Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels
-
- 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
- Y02T70/00—Maritime or waterways transport
- Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
- Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels
- Y02T70/5236—Renewable or hybrid-electric solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a power distribution method of a parallel ship hybrid power system, which is mainly applied to the field of power optimization distribution of the parallel ship hybrid power system. Firstly, determining the energy efficiency of a storage battery pack and a natural gas engine set when the storage battery pack and the natural gas engine set output different powers under respective important influence factors; secondly, determining the overall energy efficiency of the system under the conditions of different running states of the gas unit side and the storage battery pack side when the output end of the gear box outputs given power and rotating speed according to a given reduction gear box; and finally, adjusting the system operation state point to the system state point with the best energy efficiency of the output power, the rotating speed and the actual system state according to the expected output power, the rotating speed and the actual system state of the ship. The invention can always control the working operation point of the system to be the state point with the best energy efficiency according to the actual states of the storage battery, the natural gas engine and the whole system, thereby improving the energy efficiency of the hybrid power system and further achieving the purposes of saving energy and reducing the operation cost.
Description
Technical Field
The invention belongs to the technical field of hybrid power ships, and designs a control method for improving the energy efficiency of a power system by optimizing a power distribution method according to the actual running condition of a gas-electricity hybrid power ship in a parallel working mode.
Background
With the strict control of marine emissions, it is difficult to meet the increasingly strict emission regulations by means of advanced technologies such as EGR and SCR to reduce marine diesel emissions. The gas-electric hybrid power system of the ship utilizes the advantages of clean alternative energy of a gas engine and the characteristics of energy storage and quick dynamic response of the battery pack, has the advantages of high energy efficiency and low emission, and is an important strategic direction for the development of green ship power. In order to pursue higher fuel economy and improve the energy efficiency of the system, the actual running conditions of the ship need to be continuously combined in real time, each system is adjusted to the optimal running state from the perspective of the energy management optimization of the whole ship, the optimal running working condition point is continuously approached, the ship emission is reduced, and more energy-saving operation is carried out according to the actual running environment.
Fig. 1 is a schematic diagram showing the basic components of a parallel type ship hybrid power system. As shown in fig. 1, the parallel hybrid propulsion system for ships mainly comprises a natural gas engine, a storage battery pack, a permanent magnet synchronous reversible motor, a reduction gear box, a clutch a, a clutch b, a propeller, a shore power charging device and a current converter, wherein the power sources are the natural gas engine and the storage battery pack. Compared with the traditional fuel oil engine, the natural gas engine has obvious advantages in the aspects of reducing carbon emission and nitrogen emission, almost no emission of sulfur and PM, but has the defects of poor dynamic response and poor low-load performance, so that the wide use of the natural gas engine is severely limited, and the gas-electric hybrid power is an effective way for making up the two defects and conforms to the national development strategy.
The components such as the natural gas engine, the storage battery pack and the permanent magnet synchronous reversible motor have operating working points with the highest energy efficiency, but are influenced by multiple factors, and when the overall energy efficiency of the parallel ship hybrid propulsion system reaches the highest point, the energy efficiency of each component is not necessarily the highest point. Therefore, the invention is carried out in order to ensure that the parallel ship hybrid propulsion system operates at the working point with the highest overall energy efficiency.
Disclosure of Invention
The invention aims to provide a power distribution method of a parallel ship hybrid power system in order to improve the energy efficiency of the parallel ship hybrid power propulsion system and reduce the ship operation cost.
The purpose of the invention is realized as follows:
firstly, determining the energy efficiency of a storage battery pack and a natural gas engine unit when the storage battery pack and the natural gas engine unit output different powers under respective important influence factors, wherein the method comprises the following steps:
(1) And obtaining the energy efficiency of the storage battery pack side system when the storage battery pack outputs different powers under different SOC conditions. The storage battery pack side refers to a shore power charging device, the storage battery pack, a permanent magnet synchronous reversible motor and a clutch b. Energy source of storage battery pack is divided into shore power E 1 With electric energy E provided by natural gas engine 2 (ii) a The ratio of the source energy is shore power E 1 = n% and electric energy E provided by natural gas engine 2 = 1-n%, the source energy efficiency is the shore power efficiency η an And the electric energy efficiency eta provided by the natural gas engine fan ＝η gen ×η cfca ×η jiansuab ×η motd (ii) a Wherein eta gen Natural gas engine efficiency; eta cfca Is the energy efficiency of clutch a; eta jiansuab Is the energy efficiency between a and b of the reduction gearbox; eta motd The energy efficiency of the permanent magnet synchronous reversible motor in the power generation mode is shown; energy source efficiency of accumulator is eta bat ＝E 1 ×η an +E 2 ×η fan (ii) a Side energy efficiency of the battery pack is eta batce ＝η bat ×η ch ×η disch ×η mot ×η cfcb ×η jiansubc Wherein eta ch Charging efficiency for the battery pack; eta disch The discharge efficiency of the storage battery pack is obtained; eta mot Energy efficiency for a permanent magnet synchronous reversible motor in a motor mode; eta cfcb Is the energy efficiency of clutch b; eta jiansubc Is the energy efficiency of the reduction gearboxes b, c.
(2) Obtaining the energy efficiency of a natural gas engine side system when the natural gas engine outputs different powers under different rotating speeds; the side of the natural gas engine refers to the natural gas engine and the clutch a. Side energy efficiency of natural gas engine is eta gence ＝η gen ×η cfca ×η jiansuac (ii) a Wherein eta jiansuac To reduce the energy efficiency of the gearboxes a, c.
Secondly, according to a given reduction gear box, determining the integral energy efficiency of the system under the conditions of different running states of a natural gas engine group side and a storage battery pack side when the output end of the reduction gear box outputs given power and rotating speed, wherein the method comprises the following steps:
(1) And determining the type of the connection mode of the input ends A and B and the output end C of the reduction gear box according to the given reduction gear box. Wherein the reduction ratio of the side input end A and the output end C of the natural gas engine is i 1 1 or i =1 2 1, = 2; the reduction ratio of the input end B and the output end C at the side of the natural gas engine of the storage battery is i 3 1 or i =1 4 ＝2:1。
(2) And (3) giving the output power and the rotating speed of the output end C, determining the connection mode of the input end and the reduction gear box, and calculating the integral energy efficiency of the system under the condition that each connection mode has different mixing degrees under H when the given output power is given. Degree of mixing H, i.e. the side output power P of the natural gas engine genc And total output power P zong Ratio of occupation;
the output given power and the rotating speed, namely the output power and the rotating speed of the output end C are determined, the input end and the output end have 4 connecting modes in total, wherein each power distribution has different mixing degrees, and the different mixing degrees correspond to different operation modes.
(3) And calculating to obtain the power matching condition and the running state of the natural gas engine side and the storage battery side when the output power and the rotating speed of the output end C are given according to the principle of optimal energy efficiency.
Finally, according to the expected output power, the rotating speed and the actual state of the system of the ship, the system operating point is adjusted to the operating state point of the system when the energy efficiency is optimal, and the method comprises the following steps:
(1) According to the actual running state of the ship, various parameters of the ship parallel hybrid power system are obtained, and the system parameters comprise: the rotating speed and the power of the output end of the reduction gear box, the running state and the feeding parameters of the natural gas engine the voltage and current of the storage battery, the SOC state, the output power and the rotating speed of the permanent magnet synchronous reversible motor and the overall energy efficiency of the system.
(2) And (4) deducing the expected running state of the ship according to the actual working environment and state of the ship, and determining the expected output power and the rotating speed of the output end C.
(3) Adjusting the working point of the ship hybrid power system to a system state point with the best energy efficiency of the output power, the rotating speed and the energy efficiency according to the expected output power and the rotating speed of the output end C and the actual state of each system;
the operation modes are divided into an electric propulsion mode, a hybrid propulsion mode, a mechanical propulsion mode and a charging propulsion mode;
the electric propulsion mode is that the clutch a is separated and the clutch b is engaged; the natural gas engine is in a stop state or an idle state, the permanent magnet synchronous reversible motor is in a motor mode and provides power required by ship propulsion, and the storage battery pack is in an energy release state and provides energy for the permanent magnet synchronous reversible motor.
The hybrid propulsion mode is with both clutches a, b engaged; the natural gas engine is in a working mode, the permanent magnet synchronous reversible motor is in a motor state, the natural gas engine and the permanent magnet synchronous reversible motor provide power required by ship propulsion together, and the storage battery is in an energy release state and provides energy for the permanent magnet synchronous motor.
The mechanical propulsion mode is that the clutch a is engaged and the clutch b is disengaged; the natural gas engine is in a working state and provides power required by ship propulsion, the permanent magnet synchronous reversible motor is in a shutdown state or an idling idle state, and the storage battery pack is in a rest state.
The charging propulsion mode is that the clutches a and b are both engaged; the natural gas engine is in a working state, the permanent magnet synchronous reversible motor is in a generator mode, the natural gas engine provides power required by ship propulsion and drives the permanent magnet synchronous reversible motor to rotate, so that the permanent magnet synchronous reversible motor converts mechanical energy into electric energy and stores the electric energy in the storage battery pack, and the storage battery pack is in a charging mode.
The operation mode and the mixing value range have a one-to-one correspondence relationship; wherein H =0 in the case of the electric propulsion mode, 0 < H < 1 in the case of the hybrid propulsion mode, H =1 in the case of the mechanical propulsion mode, and H >1 in the case of the charging propulsion mode.
Compared with the prior art, the invention has the beneficial effects that:
the invention can always control the working operation point of the system to be the state point with the best energy efficiency according to the actual states of the storage battery, the natural gas engine and the whole system, thereby improving the energy efficiency of the hybrid power system and further achieving the purposes of saving energy and reducing the operation cost.
Drawings
FIG. 1 is a schematic diagram of parallel marine hybrid propulsion system components;
FIG. 2 is a schematic energy flow diagram of an electric propulsion mode of the parallel hybrid propulsion system;
FIG. 3 is a hybrid propulsion mode energy flow schematic of the parallel hybrid propulsion system;
FIG. 4 is a schematic diagram of a parallel hybrid propulsion system charge propulsion mode energy flow;
FIG. 5 is a mechanical propulsion mode energy flow schematic of a parallel hybrid propulsion system;
FIG. 6 is a schematic view of a reduction gearbox;
FIG. 7 is a flow chart of a power distribution method of a parallel hybrid power system of a ship.
Detailed Description
The following description of several possible embodiments of the invention is intended to provide a basic understanding of the invention and is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. It is easily understood that according to the technical solution of the present invention, other implementations that can be substituted with each other can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.
The invention is designed for searching the optimal operation working condition point of the ship by combining the actual operation state of the ship and the parallel gas-electric hybrid propulsion system applied to the ship so as to improve the energy efficiency of the system.
In order to find the optimal operating condition point of the ship, the structure of the parallel ship hybrid propulsion system needs to be determined, which is described with reference to fig. 1 to 3.
Fig. 1 is a schematic diagram of components of a parallel hybrid propulsion system for a ship, where the system includes a natural gas engine, a clutch a, a shore power charging device, a current converter, a permanent magnet synchronous reversible motor, a clutch b, a reduction gear box, and a propeller, where the shore power charging device, a storage battery pack, the current converter, and the permanent magnet synchronous reversible motor are electrically connected, and the natural gas engine, the clutch a, the permanent magnet synchronous reversible motor, the clutch b, the reduction gear box, and the propeller are mechanically connected.
FIGS. 2-5 illustrate the energy flow path of the parallel hybrid propulsion system for each mode of operation, wherein FIG. 2 is a schematic diagram of the energy flow of the system in the electric propulsion mode; FIG. 3 is a schematic diagram of the energy flow of the system in a hybrid propulsion mode; FIG. 4 is a schematic diagram of the energy flow of the system in a mechanical propulsion mode; FIG. 5 is a schematic diagram of the energy flow of the system in the charging boost mode
FIG. 2 shows an electric propulsion mode with clutch a disengaged and clutch b engaged; the natural gas engine is in a shutdown state or an idling idle state, the permanent magnet synchronous reversible motor is in a motor mode and provides power required by ship propulsion, and the storage battery pack is in an energy release state and provides energy for the permanent magnet synchronous reversible motor.
FIG. 3 illustrates a hybrid propulsion mode with both clutches a, b engaged; the natural gas engine is in a working mode, the permanent magnet synchronous reversible motor is in a motor state, the natural gas engine and the permanent magnet synchronous reversible motor provide power required by ship propulsion together, and the storage battery is in an energy release state and provides energy for the permanent magnet synchronous motor.
FIG. 4 shows the mechanical propulsion mode with clutch a engaged and clutch b disengaged; the natural gas engine is in a working state and provides power required by ship propulsion, the permanent magnet synchronous reversible motor is in a shutdown state or an idle state, and the storage battery pack is in a rest state.
FIG. 5 shows a charge propulsion mode with both clutches a, b engaged; the natural gas engine is in a working state, the permanent magnet synchronous reversible motor is in a generator mode, the natural gas engine provides power required by ship propulsion and drives the permanent magnet synchronous reversible motor to rotate, so that the permanent magnet synchronous reversible motor converts mechanical energy into electric energy and stores the electric energy in the storage battery pack, and the storage battery pack is in a charging mode.
Figure 6 shows a schematic view of a reduction gearbox. The reduction gear box is provided with an input end a, an input end b and an output end c, and the reduction ratio of the input end a to the output end c is i 1 1 or i =1 2 1, and the reduction ratio of the input end b to the output end c is i 3 1 or i =1 4 In the case of =2, the reduction gear box input/output coupling method is four in total, and an appropriate method can be selected according to actual conditions.
The flow chart of the power distribution method of the parallel ship hybrid power propulsion system is shown as the following concrete steps in the attached figure 7:
firstly, determining the energy efficiency of a storage battery pack and a natural gas engine set when the storage battery pack and the natural gas engine set output different powers under respective important influence factors, wherein the method comprises the following steps of:
(1) And obtaining the energy efficiency of the storage battery pack side system when the storage battery pack outputs different powers under different SOC conditions. The storage battery pack side refers to a shore power charging device, the storage battery pack, a permanent magnet synchronous reversible motor and a clutch b. The energy source of the storage battery pack is divided into shore power E 1 With electric energy E provided by natural gas engine 2 (ii) a The ratio of the source energy is shore power E 1 = n% and electric energy E provided by natural gas engine 2 = 1-n%, the source energy efficiency is the shore power efficiency η an And the electric energy efficiency eta provided by the natural gas engine fan ＝η gen ×η cfca ×η jiansuab ×η motd (ii) a Wherein eta gen Natural gas engine efficiency; eta cfca Being a clutch aEnergy efficiency; eta jiansuab Is the energy efficiency between a and b of the reduction gearbox; eta motd The energy efficiency of the permanent magnet synchronous reversible motor in a power generation mode is shown; energy source efficiency of accumulator is eta bat ＝E 1 ×η an +E 2 ×η fan (ii) a Side energy efficiency of accumulator battery is eta batce ＝η bat ×η ch ×η disch ×η mot ×η cfcb ×η jiansubc Wherein eta ch Charging efficiency for the battery pack; eta disch The discharge efficiency of the storage battery pack is obtained; eta mot Energy efficiency for a permanent magnet synchronous reversible motor in a motor mode; eta cfcb Is the energy efficiency of clutch b; eta jiansubc To reduce the energy efficiency of the gearboxes b, c.
(2) Obtaining the energy efficiency of a natural gas engine side system when the natural gas engine outputs different powers under different rotating speeds; the side of the natural gas engine refers to the natural gas engine and the clutch a. Side energy efficiency of natural gas engine is eta gence ＝η gen ×η cfca ×η jiansuac (ii) a Wherein eta jiansuac To reduce the energy efficiency of the gearboxes a, c.
Secondly, determining the integral energy efficiency of the system under the conditions of different running states of the natural gas engine set side and the storage battery pack side when the output end of the reduction gear box outputs given power and rotating speed according to the given reduction gear box, wherein the integral energy efficiency comprises the following steps:
(1) And determining the type of the coupling mode of the input ends A and B and the output end C of the reduction gearbox according to the given reduction gearbox. Wherein the reduction ratio of the side input end A and the output end C of the natural gas engine is i 1 1 or i =1 2 1, = 2; the reduction ratio of the input end B and the output end C on the side of the natural gas engine of the storage battery is i 3 1 or i =1 4 ＝2:1。
(2) And (3) giving the output power and the rotating speed of the output end C, determining the connection mode of the input end and the reduction gear box, and calculating the integral energy efficiency of the system under the condition that each connection mode has different mixing degrees under H when the given output power is given. Degree of mixing H, i.e. natural gas engine side output power P genc And total output power P zong Ratio of occupation;
the output given power and the rotating speed, namely the output power and the rotating speed of the output end C are determined, the input end and the output end have 4 connecting modes in total, wherein each power distribution has different mixing degrees, and the different mixing degrees correspond to different operation modes.
(3) And calculating to obtain the power matching condition and the running state of the natural gas engine side and the storage battery side when the output power and the rotating speed of the output end C are given according to the principle of optimal energy efficiency.
Finally, according to the expected output power, the rotating speed and the actual state of the system of the ship, the system operating point is adjusted to the operating state point of the system with the best energy efficiency, and the method comprises the following steps:
(1) According to the actual running state of the ship, various parameters of the ship parallel hybrid power system are obtained, and the system parameters comprise: the output end rotating speed and power of the reduction gear box, the running state and feeding parameters of the natural gas engine, the voltage, current and SOC state of the storage battery, the output power and rotating speed of the permanent magnet synchronous reversible motor and the overall energy efficiency of the system.
(2) And (4) deducing the expected running state of the ship according to the actual working environment and state of the ship, and determining the expected output power and the rotating speed of the output end C.
(3) Adjusting the working point of the ship hybrid power system to a system state point with the best energy efficiency of the output power, the rotating speed and the energy efficiency according to the expected output power and the rotating speed of the output end C and the actual state of each system;
the foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and scope of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.
In summary, the following steps: the invention provides a power distribution method of a parallel ship hybrid power system, which is mainly applied to the field of power optimization distribution of the parallel ship hybrid power system. The method is characterized in that energy efficiency of a storage battery pack and a natural gas engine unit when the storage battery pack and the natural gas engine unit output different powers under respective important influence factors is determined; secondly, determining the overall energy efficiency of the system under the conditions of different running states of the gas unit side and the storage battery pack side when the output end of the gear box outputs given power and rotating speed according to a given reduction gear box; and finally, adjusting the system operation state point to the system state point with the optimal energy efficiency of the output power, the rotating speed and the actual state of the system according to the expected output power, the rotating speed and the actual state of the system of the ship. The invention can always control the system working operation point to be the state point with the best energy efficiency according to the actual states of the storage battery, the natural gas engine and the whole system, thereby improving the energy efficiency of the hybrid power system and further achieving the purposes of saving energy and reducing the operation cost.
Claims (3)
1. A power distribution method of a ship parallel hybrid power system is characterized in that,
firstly, determining the energy efficiency of a storage battery pack and a natural gas engine unit when the storage battery pack and the natural gas engine unit output different powers under respective important influence factors, wherein the method comprises the following steps:
s11, obtaining the energy efficiency of a storage battery pack side system when the storage battery pack outputs different powers under different SOC conditions;
the storage battery pack side refers to a shore power charging device, a storage battery pack, a permanent magnet synchronous reversible motor and a clutch b;
the energy source of the storage battery pack is divided into shore power and electric energy provided by a natural gas engine; the ratio of the source energy is shore power E 1 = n% and electric energy E provided by natural gas engine 2 = 1-n%, the source energy efficiency is the shore power efficiency η an And the electric energy efficiency eta provided by the natural gas engine fan ＝η gen ×η cfca ×η jiansuab ×η motd Wherein eta gen Natural gas engine efficiency; eta cfca Is the energy efficiency of clutch a; eta jiansuab Is the energy efficiency between a and b of the reduction gear box; eta motd For permanent magnet synchronizationEnergy efficiency in the reversible motor generation mode;
the energy source efficiency of the storage battery is eta bat ＝E 1 ×η an +E 2 ×η fan ；
The side energy efficiency of the storage battery pack is eta batce ＝η bat ×η ch ×η disch ×η mot ×η cfcb ×η jiansubc Wherein eta ch Charging efficiency for the battery pack; eta disch The discharge efficiency of the storage battery pack is obtained; eta mot Energy efficiency for a permanent magnet synchronous reversible motor in a motor mode; eta cfcb Is the energy efficiency of clutch b; eta jiansubc Energy efficiency of the reduction gearboxes b, c;
s12, obtaining energy efficiency when the natural gas engine of the natural gas engine side system outputs different powers under different rotating speeds;
the side of the natural gas engine refers to the natural gas engine and a clutch a;
the side energy efficiency of the natural gas engine is eta gence ＝η gen ×η cfca ×η jiansuac ，η jiansuac Is the energy efficiency of the reduction gearboxes a, c;
secondly, according to a given reduction gear box, determining the integral energy efficiency of the system under the conditions of different running states of a natural gas engine group side and a storage battery pack side when the output end of the reduction gear box outputs given power and rotating speed, wherein the method comprises the following steps:
s21, determining the connection mode types of the input ends A and B and the output end C of the reduction gear box according to the given reduction gear box, wherein the reduction ratio of the input end A and the output end C on the side of the natural gas engine is i 1 1 or i =1 2 1, = 2; the reduction ratio of the input end B and the output end C on the storage battery side is i 3 1 or i =1 4 ＝2:1；
S22, giving the output power and the rotating speed of the output end C, determining the connection mode of the input end and the reduction gear box, and calculating the overall energy efficiency of the system under different mixing degrees H in each connection mode when the given output power is given;
degree of mixingH is natural gas engine side output power P genc And total output power P zong Ratio of the components;
wherein P is batc The output power of the storage battery at the end C of the output end;
the given output power and the rotating speed, namely the output power and the rotating speed of the output end C are determined, 4 connection modes are provided for the input end and the output end, wherein each power distribution has different mixing degrees, and the different mixing degrees correspond to different operation modes;
s23, calculating to obtain the power matching condition and the running state of the natural gas engine side and the storage battery side when the output power and the rotating speed of the output end C are given according to the principle of optimal energy efficiency;
finally, according to the expected output power, the rotating speed and the actual state of the system of the ship, the system operating point is adjusted to the operating state point of the system with the best energy efficiency, and the method comprises the following steps:
s31, acquiring various parameters of the parallel hybrid power system of the ship according to the actual running state of the ship;
the various system parameters include: the output end rotating speed and power of the reduction gear box, the running state and feeding parameters of the natural gas engine, the voltage and current of the storage battery and the SOC state, the output power and rotating speed of the permanent magnet synchronous reversible motor and the overall energy efficiency of the system are calculated;
s32, deducing the expected running state of the ship according to the actual working environment and state of the ship, and determining the expected output power and the rotating speed of an output end C;
and S33, adjusting the working point of the ship hybrid power system to the system state point with the optimal energy efficiency of the output power, the rotating speed and the rotating speed according to the expected output power and the rotating speed of the output end C and the actual state of each system.
2. The power distribution method of a parallel hybrid power system of a ship according to claim 1, wherein the operation modes are classified into an electric propulsion mode, a hybrid propulsion mode, a mechanical propulsion mode, and a charging propulsion mode;
the electric propulsion mode is that the clutch a is separated and the clutch b is engaged; the natural gas engine is in a shutdown state or an idling idle state, the permanent magnet synchronous reversible motor is in a motor mode and provides power required by ship propulsion, and the storage battery pack is in an energy release state and provides energy for the permanent magnet synchronous reversible motor;
the hybrid propulsion mode is with both clutches a, b engaged; the natural gas engine is in a working mode, the permanent magnet synchronous reversible motor is in a motor state, the natural gas engine and the permanent magnet synchronous reversible motor jointly provide power required by ship propulsion, and the storage battery pack is in an energy releasing state and provides energy for the permanent magnet synchronous motor;
the mechanical propulsion mode is that the clutch a is engaged and the clutch b is disengaged; the natural gas engine is in a working state and provides power required by ship propulsion, the permanent magnet synchronous reversible motor is in a shutdown state or an idle state, and the storage battery pack is in a rest state;
the charging propulsion mode is that both clutches a and b are engaged; the natural gas engine is in a working state, the permanent magnet synchronous reversible motor is in a generator mode, the natural gas engine provides power required by ship propulsion and drives the permanent magnet synchronous reversible motor to rotate, so that the permanent magnet synchronous reversible motor converts mechanical energy into electric energy and stores the electric energy in the storage battery pack, and the storage battery pack is in a charging mode.
3. The power distribution method of a parallel hybrid power system of a ship according to claim 1 or 2, characterized in that the operation mode has a one-to-one correspondence relationship with a mixing degree value range; wherein H =0 in the case of the electric propulsion mode, 0 < H < 1 in the case of the hybrid propulsion mode, H =1 in the case of the mechanical propulsion mode, and H >1 in the case of the charging propulsion mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110436181.2A CN113148093B (en) | 2021-04-22 | 2021-04-22 | Power distribution method of parallel ship hybrid power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110436181.2A CN113148093B (en) | 2021-04-22 | 2021-04-22 | Power distribution method of parallel ship hybrid power system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113148093A CN113148093A (en) | 2021-07-23 |
| CN113148093B true CN113148093B (en) | 2022-10-28 |
Family
ID=76869461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110436181.2A Active CN113148093B (en) | 2021-04-22 | 2021-04-22 | Power distribution method of parallel ship hybrid power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113148093B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114771796A (en) * | 2022-03-01 | 2022-07-22 | 武汉理工大学 | Ship gas-electric hybrid power system with direct-current networking |
| CN114834622A (en) * | 2022-05-27 | 2022-08-02 | 哈尔滨工程大学 | Ship diesel-electric hybrid power propulsion system based on fuzzy control |
| CN115503926B (en) * | 2022-11-07 | 2023-02-28 | 烟台哈尔滨工程大学研究院 | Monitoring security system and method for ship gas-electricity hybrid power system and ship |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2176421A1 (en) * | 1996-05-13 | 1997-11-14 | Tai-Her Yang | Distributed differential mixing combined power system |
| CA2524543A1 (en) * | 2004-10-29 | 2006-04-29 | Tai-Her Yang | Split serial-parallel hybrid dual-power drive system |
| CN101244687A (en) * | 2008-03-20 | 2008-08-20 | 上海交通大学 | Series-parallel type hybrid power-driven system and drive method |
| CN101475057A (en) * | 2009-02-01 | 2009-07-08 | 肖鑫生 | 360-degree all-revolving shipping pairing rotating paddle propulsion unit |
| JP2012206598A (en) * | 2011-03-29 | 2012-10-25 | Tsuneishi Holdings Corp | Propulsion energizing device and ship |
| CN103917442A (en) * | 2011-11-14 | 2014-07-09 | 斯太尔动力有限责任公司 | Control method for a hybrid vessel drive means and hybrid drive system |
| CN105150825A (en) * | 2015-07-14 | 2015-12-16 | 中国人民解放军装甲兵技术学院 | Hybrid power device of multi-shaft driving heavy vehicle and control method for hybrid power device |
| CN108639299A (en) * | 2018-03-08 | 2018-10-12 | 哈尔滨工程大学 | A kind of pneumoelectric series parallel type ship hybrid power system of carrying fuel battery |
| CN108657405A (en) * | 2018-03-08 | 2018-10-16 | 哈尔滨工程大学 | A kind of single machine single-blade formula pneumoelectric mixing ship power system |
| CN108674625A (en) * | 2018-03-08 | 2018-10-19 | 哈尔滨工程大学 | A kind of parallel ship hybrid power system of the pneumoelectric of carrying fuel battery |
| CN112339963A (en) * | 2019-08-08 | 2021-02-09 | 株洲中车时代电气股份有限公司 | Direct-current networking ship electric propulsion system and method |
| CN112498329A (en) * | 2019-09-13 | 2021-03-16 | 福特全球技术公司 | Method and system for engine control during a hybrid electric vehicle shift |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2643878A1 (en) * | 2008-11-14 | 2010-05-14 | Pierre Caouette | An electronic method of controlling propulsion & regeneration for electric, hybrid-electric and diesel-electric marine crafts |
| CN101701550B (en) * | 2009-11-09 | 2012-02-01 | 哈尔滨工程大学 | Gas turbine-alkali metal thermal to electric converter generating device |
| KR101283039B1 (en) * | 2011-06-09 | 2013-07-05 | 현대자동차주식회사 | Power transmission system of hybrid electric vehicle |
| CN102616128A (en) * | 2012-03-02 | 2012-08-01 | 昆明船舶设备集团有限公司 | Multi-power unit-coupled hybrid power assembly and control method thereof |
| CN108860549A (en) * | 2018-03-08 | 2018-11-23 | 哈尔滨工程大学 | A kind of parallel ship hybrid power system of the bavin pneumoelectric of carrying fuel battery |
| CN108674626A (en) * | 2018-03-08 | 2018-10-19 | 哈尔滨工程大学 | A kind of double paddle pneumoelectric mixing ship power systems of two-shipper |
-
2021
- 2021-04-22 CN CN202110436181.2A patent/CN113148093B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2176421A1 (en) * | 1996-05-13 | 1997-11-14 | Tai-Her Yang | Distributed differential mixing combined power system |
| CA2524543A1 (en) * | 2004-10-29 | 2006-04-29 | Tai-Her Yang | Split serial-parallel hybrid dual-power drive system |
| CN101244687A (en) * | 2008-03-20 | 2008-08-20 | 上海交通大学 | Series-parallel type hybrid power-driven system and drive method |
| CN101475057A (en) * | 2009-02-01 | 2009-07-08 | 肖鑫生 | 360-degree all-revolving shipping pairing rotating paddle propulsion unit |
| JP2012206598A (en) * | 2011-03-29 | 2012-10-25 | Tsuneishi Holdings Corp | Propulsion energizing device and ship |
| CN103917442A (en) * | 2011-11-14 | 2014-07-09 | 斯太尔动力有限责任公司 | Control method for a hybrid vessel drive means and hybrid drive system |
| CN105150825A (en) * | 2015-07-14 | 2015-12-16 | 中国人民解放军装甲兵技术学院 | Hybrid power device of multi-shaft driving heavy vehicle and control method for hybrid power device |
| CN108639299A (en) * | 2018-03-08 | 2018-10-12 | 哈尔滨工程大学 | A kind of pneumoelectric series parallel type ship hybrid power system of carrying fuel battery |
| CN108657405A (en) * | 2018-03-08 | 2018-10-16 | 哈尔滨工程大学 | A kind of single machine single-blade formula pneumoelectric mixing ship power system |
| CN108674625A (en) * | 2018-03-08 | 2018-10-19 | 哈尔滨工程大学 | A kind of parallel ship hybrid power system of the pneumoelectric of carrying fuel battery |
| CN112339963A (en) * | 2019-08-08 | 2021-02-09 | 株洲中车时代电气股份有限公司 | Direct-current networking ship electric propulsion system and method |
| CN112498329A (en) * | 2019-09-13 | 2021-03-16 | 福特全球技术公司 | Method and system for engine control during a hybrid electric vehicle shift |
Non-Patent Citations (2)
| Title |
|---|
| 中大型客滚船的线型与推进***研究;张敏健;《船舶设计通讯》;20091215;全文 * |
| 动力定位船PMS功率再分配控制方法研究;孙为康;《工程科技Ⅱ辑》;20140430;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113148093A (en) | 2021-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113148093B (en) | Power distribution method of parallel ship hybrid power system | |
| CN108639299B (en) | Gas-electric series-parallel ship hybrid power system with fuel cell | |
| CN109941417B (en) | Gas-electric series-parallel ship hybrid power system with super capacitor | |
| US20130160722A1 (en) | Hybrid vehicle with exhaust powered turbo generator | |
| CN108438189B (en) | Double-shaft gas-electricity hybrid ship power system | |
| CN108674625A (en) | A kind of parallel ship hybrid power system of the pneumoelectric of carrying fuel battery | |
| Bejgam et al. | A brief study on hybrid electric vehicles | |
| CN108860549A (en) | A kind of parallel ship hybrid power system of the bavin pneumoelectric of carrying fuel battery | |
| Suh et al. | Powertrain system optimization for a heavy-duty hybrid electric bus | |
| CN109878675A (en) | A kind of bi-motor coaxial-type pneumoelectric mixing ship power system | |
| CN112319246A (en) | Range-extending type whole vehicle fuel-saving optimization method | |
| CN109911161A (en) | A kind of double paddle pneumoelectric mixing ship power systems of single machine | |
| JP7196738B2 (en) | hybrid vehicle | |
| CN113494350A (en) | Turbocharging system, turbocharger and control method | |
| Fan et al. | Energy efficiency analysis of parallel ship gas-battery hybrid power system | |
| CN109878684A (en) | A kind of pneumoelectric mixing ship power system with generating set and vehicle | |
| CN109878686B (en) | Double-engine single-propeller type gas-electricity hybrid ship power system | |
| CN109878687B (en) | Double-engine three-propeller type ship hybrid power system with composite energy storage function | |
| CN207892700U (en) | A kind of internal-combustion engine system | |
| CN111827402A (en) | Tandem type hybrid power system for loader | |
| CN113525656A (en) | Gas-electric hybrid power ship energy distribution method based on propeller rotating speed closed loop | |
| Jindo et al. | Power Generation Control Method of Fixed-power Parallel Resonant PMSG System for Series Hybrid Vehicle | |
| CN210970709U (en) | Ternary hybrid power driving system of engine, waste heat recovery system and battery system | |
| Jindo et al. | Power Generation Control Method of Parallel Resonant PMSG System for Series Hybrid Vehicle | |
| CN109878681B (en) | Three-engine double-paddle diesel-gas-electric hybrid ship power system with fuel cell |
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 |