WO2014141902A1 - 船舶 - Google Patents
船舶 Download PDFInfo
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- WO2014141902A1 WO2014141902A1 PCT/JP2014/055030 JP2014055030W WO2014141902A1 WO 2014141902 A1 WO2014141902 A1 WO 2014141902A1 JP 2014055030 W JP2014055030 W JP 2014055030W WO 2014141902 A1 WO2014141902 A1 WO 2014141902A1
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- WO
- WIPO (PCT)
- Prior art keywords
- output
- electric motor
- internal combustion
- combustion engine
- ship
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H3/00—Propeller-blade pitch changing
- B63H3/10—Propeller-blade pitch changing characterised by having pitch control conjoint with propulsion plant control
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- 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
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/14—Use of propulsion power plant or units on vessels the vessels being motor-driven relating to internal-combustion engines
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- 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
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
- B63H23/10—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from more than one propulsion power unit
- B63H23/12—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from more than one propulsion power unit allowing combined use of the propulsion power units
- B63H23/14—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from more than one propulsion power unit allowing combined use of the propulsion power units with unidirectional drive or where reversal is immaterial
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- 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
- B63H2021/205—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 the second power unit being of the internal combustion engine type, or the like, e.g. a Diesel engine
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- 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
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- 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
Definitions
- the present invention relates to a ship. Specifically, the present invention relates to a ship having an internal combustion engine and an electric motor as propulsion power.
- a ship including an internal combustion engine such as a diesel engine and an electric motor as a power source for propulsion is known.
- the output from the internal combustion engine is transmitted to the propeller.
- the output from the electric motor is combined with the output from the internal combustion engine and transmitted to the propeller.
- the present invention has been made to solve such a problem, and protects the electric motor without using a frequency converter, and promotes it by a combined output of the output from the internal combustion engine and the output from the electric motor.
- the purpose is to provide a ship that can be used. Moreover, it aims at providing the cheap ship which does not use a frequency converter.
- the target output of the motor is set, and the internal combustion engine is set so as to maintain the output from the motor at the target output.
- the rotation speed of the engine is controlled, and the load sharing ratio between the internal combustion engine and the electric motor is changed.
- the target rotational speed of the internal combustion engine is set, the output of the internal combustion engine is controlled so as to maintain the rotational speed of the internal combustion engine at the target rotational speed, and the output from the electric motor is maintained at the target output.
- the target rotational speed of the internal combustion engine is changed.
- the output from the motor is a target output, and when the output from the internal combustion engine reaches the rated output of the internal combustion engine, the pitch angle of the variable pitch propeller is controlled to decrease. .
- the output of the internal combustion engine is controlled so that the rotational speed of the motor is constant in a ship that drives the variable pitch propeller by interlockingly connecting the internal combustion engine and the electric motor by a power transmission device.
- the output of the internal combustion engine is controlled according to the load from the variable pitch propeller, and the ratio of load sharing between the internal combustion engine and the electric motor is changed.
- an internal combustion engine whose rotational speed is controlled by a speed control device and an electric motor whose rotational speed is determined by the frequency of supplied electric power are interlocked and connected by a power transmission device to drive a variable pitch propeller.
- the target rotational speed of the internal combustion engine and the target output of the electric motor are set, the output of the internal combustion engine is controlled by the speed control device so as to maintain the rotational speed of the internal combustion engine at the target rotational speed, and the output from the electric motor Is provided with an output control device for changing the target rotational speed of the internal combustion engine so as to maintain the engine at the target output.
- the motor since the load fluctuation is borne by the internal combustion engine to balance the load, the motor is not overloaded.
- the electric motor can be protected without using the frequency converter, and can be propelled by a combined output of the output from the internal combustion engine and the output from the electric motor.
- an inexpensive ship (hybrid system) that does not use a frequency converter can be provided.
- the load fluctuation is borne by the internal combustion engine to balance the load, so that the motor is not overloaded and the rotation speed of the motor is kept substantially constant.
- the electric motor can be protected without using the frequency converter, and can be propelled by a combined output of the output from the internal combustion engine and the output from the electric motor.
- an inexpensive ship that does not use a frequency converter can be provided.
- the main engine and the electric motor are protected by forcibly reducing the load even when the fluctuation of the load cannot be borne by the internal combustion engine.
- the electric motor can be protected without using the frequency converter, and can be propelled by a combined output of the output from the internal combustion engine and the output from the electric motor.
- an inexpensive ship that does not use a frequency converter can be provided.
- the power source is changed according to the use of the ship. Therefore, the cheap ship which does not use a frequency converter can be provided.
- the electric motor can be protected without using the frequency converter, and can be propelled by a combined output of the output from the internal combustion engine and the output from the electric motor.
- an inexpensive ship that does not use a frequency converter can be provided.
- the motor since the load fluctuation is borne by the internal combustion engine to balance the load, the motor is not overloaded.
- the electric motor can be protected without using the frequency converter, and can be propelled by a combined output of the output from the internal combustion engine and the output from the electric motor.
- an inexpensive ship that does not use a frequency converter can be provided.
- the motor since the load fluctuation is borne by the internal combustion engine to balance the load, the motor is not overloaded.
- the electric motor can be protected without using the frequency converter, and can be propelled by a combined output of the output from the internal combustion engine and the output from the electric motor.
- an inexpensive ship (hybrid system) that does not use a frequency converter can be provided.
- the ship 1 is a so-called biaxial propulsion type ship.
- the number of propulsion shafts is not limited to this.
- a ship 1 includes a main engine 2 that is a propulsion engine, an electric motor 4, a power transmission device 5, a variable pitch propeller 7, an auxiliary machine 8 that is a power generation engine, and a generator 9 as main components on a hull (not shown). .
- the main machine 2 mainly generates power for propulsion.
- the main engine 2 is composed of a diesel engine.
- the main machine 2 is connected to the input side of the power transmission device 5. That is, the output We from the main machine 2 is input to the power transmission device 5.
- the main machine 2 is configured such that the rotation speed Ve can be arbitrarily changed by the speed control device 3.
- the speed control device 3 is connected to a rotation speed detection sensor and a fuel injection device (not shown) of the main engine 2.
- the main engine 2 is configured to be capable of constant speed operation control in which the speed control device 3 maintains the rotational speed Ve at the target rotational speed Vet.
- the main machine 2 is configured to be able to perform inching control of the rotational speed Ve by the speed control device 3 based on an inching signal (pulse signal) from an output control device 10 (distribution panel) described later.
- the inching control refers to a control for increasing or decreasing the rotational speed Ve by a preset ⁇ Ve regardless of the input time of the inching signal.
- the electric motor 4 mainly generates propulsion power.
- the electric motor 4 is composed of, for example, a synchronous motor.
- the electric motor 4 is connected to the input side of the power transmission device 5. That is, the output Wm from the electric motor 4 is input to the power transmission device 5.
- the electric motor 4 outputs power corresponding to the supplied electric power (current).
- the electric motor 4 is connected to the inboard bus 1a, which is a power supply path, via a breaker 1b (ACB). That is, the start of the electric motor 4 is performed by a direct entry start in a state where it is directly connected to a power supply device (not shown).
- the electric motor 4 rotates at a speed proportional to the frequency of the supplied electric power. That is, when the frequency of the electric power supplied to the electric motor 4 is constant, the rotational speed Ve of the electric motor 4 is constant.
- the power transmission device 5 combines and outputs a plurality of input powers.
- the power transmission device 5 includes a gear mechanism.
- the main transmission 2 and the electric motor 4 are connected to the input side of the power transmission device 5.
- the electric motor 4 is connected to the power transmission device 5 without using a clutch or the like.
- the power transmission device 5 has a variable pitch propeller 7 connected to the output side of the power transmission device 5 via a propulsion shaft 6.
- the power transmission device 5 is configured to be able to output a combined output of the output We of the main machine 2 and the output Wm of the electric motor 4 input from the input side to the variable pitch propeller 7 via the propulsion shaft 6 from the output side.
- the power transmission device 5 shifts and outputs the rotational speed Ve of the main engine 2 so as to coincide with the target rotational speed Vpt of the variable pitch propeller 7. .
- the power transmission device 5 changes the rotational speed Vm of the electric motor 4 so as to coincide with the target rotational speed Vpt of the variable pitch propeller 7 when the input rotational speed Vm of the electric motor 4 is the target rotational speed Vmt. Output. That is, the main machine 2 and the electric motor 4 are configured to synchronize at a predetermined rotation speed ratio according to the gear ratio of the power transmission device 5.
- variable pitch propeller 7 (CPP) generates propulsive force.
- the variable pitch propeller 7 is connected to the output shaft side of the power transmission device 5 via the propulsion shaft 6.
- the variable pitch propeller 7 is connected to the pitch angle control device 11.
- the pitch angle control device 11 acquires a detection signal for the pitch angle ⁇ of the variable pitch propeller 7, and the pitch angle ⁇ (attack angle) via an actuator (not shown) controlled by the control signal from the pitch angle control device 11. Can be changed.
- variable pitch propeller 7 can arbitrarily change the drag from the water flow, that is, the propulsive force generated by the rotation of the variable pitch propeller 7 by changing the pitch angle ⁇ even if the rotational speed Vp is constant.
- the ship 1 provided with the variable pitch propeller 7 can change the speed V of the ship 1 by changing the pitch angle ⁇ while the rotational speed Vp of the variable pitch propeller 7 is constant.
- the auxiliary machine 8 mainly generates power for power generation.
- the auxiliary machine 8 is composed of a diesel engine.
- a generator 9 is connected to the auxiliary machine 8. That is, the output from the auxiliary machine 8 is input to the generator 9.
- the auxiliary machine 8 is configured to be able to output at a constant rotational speed in order to drive the generator 9.
- the generator 9 supplies power to the electrical equipment 12 and the motor 4 in the ship 1.
- the generator 9 generates power using the output from the connected auxiliary machine 8.
- the generator 9 is connected to the inboard bus 1a, and power is supplied to the electric equipment 12, the electric motor 4, and the like through the inboard bus 1a.
- the three generators 9 and the auxiliary machine 8 are connected to the inboard bus 1a, but the present invention is not limited to this.
- the output control device 10 (distribution panel) controls the rotational speed Ve of the main unit 2 by the speed control unit 3 of the main unit 2 based on a signal from a control unit (not shown), and by the pitch angle control unit 11.
- the pitch angle ⁇ of the variable pitch propeller 7 is controlled.
- the output control device 10 stores various programs and data for controlling the main machine 2 and the variable pitch propeller 7.
- the output control device 10 may be configured such that a CPU, ROM, RAM, HDD, or the like is connected by a bus, or may be configured by a one-chip LSI or the like.
- the output control device 10 is connected to a control device (not shown) and can acquire a control signal from the control device.
- the output control device 10 is connected to the main unit 2 and can acquire a detection signal for the output We of the main unit 2.
- the output control device 10 is connected to the speed control device 3 of the main machine 2 and can transmit a control signal (inching signal) for changing the rotation speed Ve of the main machine 2.
- the output control device 10 is connected to the electric motor 4 and can acquire a detection signal for the output Wm of the electric motor 4.
- the output control device 10 is connected to the pitch angle control device 11 and can transmit a control signal for the pitch angle ⁇ of the variable pitch propeller 7.
- the output control device 10 can change the target rotational speed Vet of the main machine 2 set in the speed control device 3 based on the acquired detection signal for the output Wm of the electric motor 4.
- the output control device 10 changes the pitch angle ⁇ of the variable pitch propeller 7 from the pitch angle control device 11 based on the acquired detection signal for the output We of the main machine 2 and the detection signal for the output Wm of the electric motor 4. Is possible.
- the marine vessel 1 performs engine independent operation control for transmitting only the output We from the main engine 2 to the variable pitch propeller 7, and parallel transmits the output Wm from the electric motor 4 to the output We from the main engine 2 and transmits it to the variable pitch propeller 7.
- the operation control can be switched according to the operation state.
- the engine single operation control is selected when the ship operates on the high seas at a normal speed.
- the parallel operation control is selected, for example, when an anchor that is a heavy object is pulled up from the seabed in an anchor handling tugboat.
- the speed of the ship 1 is changed by the rotational speed Ve of the main engine 2.
- the pitch angle ⁇ of the variable pitch propeller 7 is not changed.
- the output control device 10 controls the rotational speed Ve of the main engine 2 by the speed control device 3 based on a control signal from a control device (not shown). At this time, the output Wm from the electric motor 4 is not transmitted to the variable pitch propeller 7. That is, the main engine 2 shares all loads from the variable pitch propeller.
- the speed of the ship 1 is changed by the pitch angle ⁇ of the variable pitch propeller 7.
- the output control device 10 controls the pitch angle ⁇ of the variable pitch propeller 7 so that the speed V of the ship 1 becomes the target speed Vt by the pitch angle control device 11 based on a control signal from a control device (not shown).
- the rotational speed Vp of the variable pitch propeller 7 is maintained at the target rotational speed Vpt.
- the output We from the main machine 2 and the output Wm from the electric motor 4 are transmitted to the variable pitch propeller 7. That is, the load from the variable pitch propeller is shared between the main machine 2 and the electric motor 4.
- the output control device 10 performs constant speed operation control for controlling the output We from the main machine 2 so that the rotation speed Ve of the main machine 2 becomes the target rotation speed Vet by the speed control device 3.
- the electric motor 4 is supplied with electric power having a frequency at which the rotational speed Vm matches the target rotational speed Vmt.
- the output control device 10 changes the target rotational speed Vet of the main engine 2 in order to maintain the output Wm from the electric motor 4 at the target output Wmt set by a steering device (not shown). That is, the rotational speed Ve of the main machine 2 is controlled.
- the output control device 10 controls the main unit 2 to output the output We1.
- the boat maneuvering device (not shown) supplies power so that the electric motor 4 outputs the output Wm1 set as the target output Wmt. That is, the load A is shared between the main machine 2 and the electric motor 4 at a ratio of We1 to Wm1.
- the speed control device 3 increases the output We so that the rotational speed Ve of the main engine 2 maintains the target rotational speed Vet by constant speed operation control.
- the output Wm of the motor 4 increases.
- the output control device 10 transmits an inching signal for increasing the target rotational speed Vet of the main machine 2 to the speed control device 3 in order to maintain the output Wm1 from which the output Wm from the electric motor 4 is the target output Wmt.
- the rotational speed Ve of the main machine 2 increases, and the output We from the main machine 2 also increases from the output We1 to the output We2.
- the main machine 2 and the electric motor 4 share the load B at a ratio of We2 to Wm1.
- the main machine 2 and the electric motor 4 share the load B at a ratio of We3 to Wm1.
- the output Wm from the electric motor 4 increases from the output Wm1 to the output Wm2.
- the output control device 10 transmits an inching signal for decreasing the target rotational speed Vet of the main engine 2 to the speed control device 3 in order to maintain the output Wm2 from which the output Wm from the electric motor 4 is the target output Wmt. .
- the rotational speed Ve of the main machine 2 decreases, and the output We from the main machine 2 also decreases from the output We3 to the output We4.
- the main machine 2 and the electric motor 4 share the load C at a ratio of We4 to Wm2.
- step S ⁇ b> 110 the output control device 10 obtains an operation mode control signal from a control device (not shown) and the target speed Vt of the ship 1, and the step is step S ⁇ b> 120. To migrate.
- step S120 the output control device 10 determines whether or not engine single operation control is selected based on the acquired control signal for the operation mode. As a result, when it is determined that the engine independent operation control is selected, the output control device 10 shifts the step to step S130. On the other hand, when it is determined that the engine independent operation control is not selected, that is, when the parallel operation control is selected, the output control device 10 shifts the step to step S200.
- step S130 the output control device 10 stops the electric motor 4 and shifts the step to step S140.
- step S140 the output control device 10 starts engine single operation control for transmitting only the output We of the main engine 2 to the variable pitch propeller 7, and returns the step to step S110.
- step S200 the output control device 10 starts the parallel operation control set A and shifts the step to step S210 (see FIG. 5).
- step S210 the output control device 10 acquires the target output Wmt of the electric motor 4 from a control device (not shown), and shifts the step to step S220.
- step S220 the output control device 10 causes the pitch angle control device 11 to change the pitch angle ⁇ of the variable pitch propeller to a target pitch angle ⁇ t corresponding to the target speed Vt of the ship 1 based on a control signal from a control device (not shown). After setting, the process proceeds to step S230.
- step S230 the output control device 10 performs constant speed operation control by the speed control device 3 so that the rotational speed Ve of the main engine 2 maintains the target rotational speed Vet, and the step proceeds to step S240.
- electric power is supplied by a power supply device (not shown) so that the rotational speed Vm of the electric motor 4 maintains the target rotational speed Vmt. That is, electric power is supplied so that the rotation speed Vm of the electric motor 4 becomes constant at the target rotation speed Vmt.
- step S240 the output control apparatus 10 acquires detection signals for the output We of the main machine 2 and the output Wm of the electric motor 4, and shifts the step to step S250.
- step S250 the output control device 10 determines whether or not the output Wm of the motor 4 is not equal to the target output Wmt of the motor 4 based on the acquired detection signal for the output Wm of the motor 4. As a result, when it is determined that the output Wm of the electric motor 4 is not equal to the target output Wmt of the electric motor 4, the output control device 10 shifts the step to step S260. On the other hand, when it determines with the output Wm of the electric motor 4 being equal to the target output Wmt of the electric motor 4, the parallel operation control set A is complete
- step S ⁇ b> 260 the output control device 10 determines whether or not the output Wm of the electric motor 4 is greater than the target output Wmt of the electric motor 4 based on the acquired detection signal for the output Wm of the electric motor 4. As a result, when it is determined that the output Wm of the electric motor 4 is higher than the target output Wmt of the electric motor 4, the output control device 10 shifts the step to step S270. On the other hand, when it determines with the output Wm of the electric motor 4 not increasing from the target output Wmt of the electric motor 4, the output control apparatus 10 makes a step transfer to step S261.
- step S261 the output control device 10 transmits an inching signal to the speed control device 3, decreases the target rotational speed Vet of the main machine 2 by ⁇ Ve, and shifts the load of the main machine 2 to the electric motor 4, and the step proceeds to step S240.
- the output control device 10 finely adjusts the speed of the main machine 2 to perform load sharing between the main machine 2 and the electric motor 4 and controls the output Wm of the electric motor 4 to be a constant value.
- step S ⁇ b> 270 the output control device 10 determines whether or not the output We of the main machine 2 is greater than the rated output We of the main machine 2 based on the acquired detection signal for the output We of the main machine 2. As a result, when it is determined that the output We of the main machine 2 is higher than the rated output Wer of the main machine 2, the output control device 10 shifts the step to step S280. On the other hand, if it is determined that the output We of the main machine 2 has not increased from the rated output Wer of the main machine 2, the output control device 10 shifts the step to step S271.
- step S271 the output control device 10 transmits an inching signal to the speed control device 3, increases the target rotational speed Vet of the main machine 2 by ⁇ Ve, and shifts the load of the electric motor 4 to the main machine 2, and the step proceeds to step S240.
- the output control device 10 finely adjusts the speed of the main machine 2 to perform load sharing between the main machine 2 and the electric motor 4 and controls the output Wm of the electric motor 4 to be a constant value.
- step S280 the output control device 10 decreases the target pitch angle ⁇ t of the variable pitch propeller 7 set by the pitch angle control device 11 by ⁇ , and moves the step to step S290. If the main machine 2 is not inching controlled even if the output Wm of the electric motor 4 reaches the target output Wmt of the electric motor 4 due to equipment failure or the like, the output We of the main machine 2 has reached the rated output Wer of the main machine 2. Even if not, the target pitch angle ⁇ t of the variable pitch propeller 7 set by the pitch angle control device 11 is decreased by ⁇ .
- step S290 the output control device 10 reduces the output We of the main engine 2 to the rated output Wer, the output Wm of the electric motor 4 to the target output Wmt, and the pitch angle ⁇ of the variable pitch propeller by ⁇ .
- the parallel operation control set A is terminated, and the step returns to step S110 ( (See FIG. 4).
- the ship 1 according to the present invention is the target output Wmt of the electric motor 4 in the ship 1 in which the output Wm from the electric motor 4 is combined with the output We of the main engine 2 that is an internal combustion engine and transmitted to the variable pitch propeller 7.
- the target rotational speed Vet of the main machine 2 is controlled so as to maintain the output Wm from the electric motor 4 at the target output Wmt, and the load sharing ratio between the main machine 2 and the electric motor 4 is changed, thereby changing the load. It is intended to balance. With this configuration, the main machine 2 bears the load fluctuation and balances the load, so that the motor 4 is not overloaded.
- the electric motor 4 can be protected without using a frequency converter, and can be propelled by the combined output of the output We from the main machine 2 and the output Wm from the electric motor 4. Moreover, the cheap ship 1 which does not use a frequency converter can be provided.
- the target rotation speed Vet of the main machine 2 is set, the output We of the main machine 2 is controlled so as to maintain the rotation speed Ve of the main machine 2 at the target rotation speed Vet, and the output Wm from the electric motor 4 is set to the target output Wmt.
- the target rotational speed Vet of the main engine 2 is changed so as to be maintained.
- the main machine 2 bears load fluctuations and balances the load, so that the motor 4 is not overloaded and the rotational speed Vm of the motor 4 is kept substantially constant.
- the electric motor 4 can be protected without using a frequency converter, and can be propelled by the combined output of the output We from the main machine 2 and the output Wm from the electric motor 4.
- the cheap ship 1 which does not use a frequency converter can be provided.
- the output Wm from the electric motor 4 is the target output Wmt, and when the output We from the main machine 2 reaches the rated output We of the main machine 2, the pitch angle ⁇ of the variable pitch propeller 7 is controlled to decrease. is there.
- the main machine 2 and the electric motor 4 are protected by forcibly reducing the load even when the main machine 2 cannot bear the load fluctuation.
- the electric motor 4 can be protected without using a frequency converter, and can be propelled by the combined output of the output We from the main machine 2 and the output Wm from the electric motor 4.
- the cheap ship 1 which does not use a frequency converter can be provided.
- the main engine 2 and the electric motor 4 are interlocked and connected by the power transmission device 5, and in the ship 1 that drives the variable pitch propeller 7, the output We of the main engine 2 is controlled so that the rotational speed Vm of the electric motor 4 is constant. Is. With this configuration, it is not necessary to control the electric motor 4. As a result, the electric motor 4 can be protected without using a frequency converter, and can be propelled by the combined output of the output We from the main machine 2 and the output Wm from the electric motor 4. Moreover, the cheap ship 1 which does not use a frequency converter can be provided.
- the output We of the main machine 2 is controlled according to the load from the variable pitch propeller 7, and the load sharing ratio between the main machine 2 and the electric motor 4 is changed.
- the main machine 2 bears the load fluctuation and balances the load, so that the motor 4 is not overloaded.
- the electric motor 4 can be protected without using a frequency converter, and can be propelled by the combined output of the output We from the main machine 2 and the output Wm from the electric motor 4.
- the cheap ship 1 which does not use a frequency converter can be provided.
- the main engine 2 which is an internal combustion engine whose rotational speed Ve is controlled by the speed control device 3 and the motor 4 whose rotational speed Vm is determined by the frequency of the supplied electric power are interlocked and connected by a power transmission device 5 so as to have a variable pitch.
- the target rotational speed Vet of the main engine 2 and the target output Wm of the electric motor 4 are set, and the main engine is controlled by the speed control device 3 so as to maintain the rotational speed Ve of the main engine 2 at the target rotational speed Vet. 2, and an output control device 10 that changes the target rotational speed Vet of the main engine 2 so as to maintain the output Wm from the electric motor 4 at the target output Wmt.
- the main machine 2 bears load fluctuations and balances the load, so that the motor 4 is not overloaded.
- the electric motor 4 can be protected without using a frequency converter, and can be propelled by the combined output of the output We from the main machine 2 and the output Wm from the electric motor 4.
- the cheap ship 1 which does not use a frequency converter can be provided.
- the present invention can be used in the technology of a ship equipped with an internal combustion engine and an electric motor as propulsion power.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
その結果、エンジン単独運転制御が選択されていると判定した場合、出力制御装置10はステップをステップS130に移行させる。
一方、エンジン単独運転制御が選択されていないと判定した場合、すなわち、並列運転制御が選択されている場合、出力制御装置10はステップをステップS200に移行させる。
その結果、電動機4の出力Wmが電動機4の目標出力Wmtと等しくないと判定した場合、出力制御装置10はステップをステップS260に移行させる。
一方、電動機4の出力Wmが電動機4の目標出力Wmtと等しいと判定した場合、並列運転制御セットAを終了してステップをステップS110に戻す(図4参照)。
その結果、電動機4の出力Wmが電動機4の目標出力Wmtよりも増加していると判定した場合、出力制御装置10はステップをステップS270に移行させる。
一方、電動機4の出力Wmが電動機4の目標出力Wmtよりも増加していないと判定した場合、出力制御装置10はステップをステップS261に移行させる。
その結果、主機2の出力Weが主機2の定格出力Werよりも増加していると判定した場合、出力制御装置10はステップをステップS280に移行させる。
一方、主機2の出力Weが主機2の定格出力Werよりも増加していないと判定した場合、出力制御装置10はステップをステップS271に移行させる。
このように構成することで、負荷の変動を主機2が負担して負荷の平衡を図るので電動機4が過負荷になることがない。これにより、周波数変換機を用いずに電動機4を保護するとともに、主機2からの出力Weと電動機4からの出力Wmとの合成出力によって推進することができる。また、周波数変換機を用いない安価な船舶1を提供することができる。
このように構成することで、負荷の変動を主機2が負担して負荷の平衡を図るので電動機4が過負荷になることがなく、電動機4の回転速度Vmが略一定に保たれる。これにより、周波数変換機を用いずに電動機4を保護するとともに、主機2からの出力Weと電動機4からの出力Wmとの合成出力によって推進することができる。また、周波数変換機を用いない安価な船舶1を提供することができる。
このように構成することで、負荷の変動を主機2が負担できない状態になっても負荷を強制的に減少させることで主機2と電動機4とが保護される。これにより、周波数変換機を用いずに電動機4を保護するとともに、主機2からの出力Weと電動機4からの出力Wmとの合成出力によって推進することができる。また、周波数変換機を用いない安価な船舶1を提供することができる。
このように構成することで、船舶1の用途に合わせて動力源が変更される。これにより、周波数変換機を用いない安価な船舶1を提供することができる。
このように構成することで、電動機4を制御する必要がない。これにより、周波数変換機を用いずに電動機4を保護するとともに、主機2からの出力Weと電動機4からの出力Wmとの合成出力によって推進することができる。また、周波数変換機を用いない安価な船舶1を提供することができる。
このように構成することで、負荷の変動を主機2が負担して負荷の平衡を図るので電動機4が過負荷になることがない。これにより、周波数変換機を用いずに電動機4を保護するとともに、主機2からの出力Weと電動機4からの出力Wmとの合成出力によって推進することができる。また、周波数変換機を用いない安価な船舶1を提供することができる。
このように構成することで、負荷の変動を主機2が負担して負荷の平衡を図るので電動機4が過負荷になることがない。これにより、周波数変換機を用いずに電動機4を保護するとともに、主機2からの出力Weと電動機4からの出力Wmとの合成出力によって推進することができる。また、周波数変換機を用いない安価な船舶1を提供することができる。
2 主機
4 電動機
7 可変ピッチプロペラ
Ve 主機の回転速度
Vet 主機の目標回転速度
Wm 電動機の出力
Wmt 電動機の目標出力
Claims (8)
- 内燃機関からの出力に電動機からの出力が合成されて可変ピッチプロペラに伝達される船舶において、
電動機の目標出力が設定され、
電動機からの出力を目標出力に維持するように内燃機関の回転速度が制御されて、内燃機関と電動機との負荷分担の割合が変更される船舶。 - 前記内燃機関の目標回転速度が設定され、
内燃機関の回転速度を目標回転速度に維持するように内燃機関の出力が制御されるとともに、前記電動機からの出力を目標出力に維持するように内燃機関の目標回転速度が変更される請求項1に記載の船舶。 - 前記電動機からの出力が目標出力であって、前記内燃機関からの出力が内燃機関の定格出力に到達すると前記可変ピッチプロペラのピッチ角が減少するように制御される請求項1に記載の船舶。
- 前記電動機からの出力が目標出力であって、前記内燃機関からの出力が内燃機関の定格出力に到達すると前記可変ピッチプロペラのピッチ角が減少するように制御される請求項2に記載の船舶。
- 前記内燃機関からの出力のみが前記可変ピッチプロペラに伝達可能に構成される請求項1から請求項4のいずれか一項に記載の船舶。
- 内燃機関と電動機とが動力伝達装置によって連動連結され、可変ピッチプロペラを駆動する船舶において、
電動機の回転速度が一定になるように内燃機関の出力が制御される船舶。 - 前記可変ピッチプロペラからの負荷に応じて前記内燃機関の出力が制御され内燃機関と前記電動機との負荷分担の割合が変更される請求項6に記載の船舶。
- 速度制御装置によって回転速度が制御される内燃機関と供給される電力の周波数によって回転速度が決定される電動機とが動力伝達装置によって連動連結され、可変ピッチプロペラを駆動する船舶において、
前記内燃機関の目標回転速度と前記電動機の目標出力とが設定され、
内燃機関の回転速度を目標回転速度に維持するように速度制御装置によって内燃機関の出力を制御するとともに、電動機からの出力を目標出力に維持するように内燃機関の目標回転速度を変更する出力制御装置を具備する船舶。
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