JP6339353B2 - Electric propulsion ship control device, electric propulsion ship control system, and electric propulsion ship - Google Patents

Description

  The present invention relates to a control device for an electric propulsion ship, an electric propulsion ship control system, and an electric propulsion ship.

In a conventional electric propulsion ship, a propeller-driven propulsion motor is connected to an inboard bus with a constant voltage and frequency, and the bus is kept constant at 60 Hz and 440 V by a generator driven by an engine. The rotation control of the propeller has been performed by a method of changing the rotation speed of the propulsion motor by frequency control by an inverter and a method of changing the propeller blade angle of a variable pitch.
By the way, in Patent Document 1, a variable speed engine, a synchronous generator generated by the variable speed engine, a pole conversion means connected to the synchronous generator, a synchronous motor or an induction motor connected to the pole conversion means, A marine electric propulsion system having a fixed pitch propeller driven by a synchronous motor or an induction motor is proposed.
Also, in Patent Document 2, in order to reduce the inrush current that flows at the time of startup, when the load current exceeds a reference value, the engine speed for driving the generator is temporarily reduced, and then the speed is reduced to the rated speed. A rising speed control is proposed.

JP 2010-241194 A JP-A-4-172980

In conventional electric propulsion ships, rotation control is simple, but inverters and variable pitch propellers are expensive, and there is a problem that they are difficult to spread in inexpensive ships such as coastal ships.
In Patent Document 1, although acceleration and deceleration can be performed even at extremely low speeds by the pole conversion means, it is not possible to effectively prevent an excessive start current from flowing when the motor is started.
In Patent Document 2, the induction motor can be started without excessive start current by controlling the load current as a reference. However, Patent Document 2 is an induction motor that is rated for operation after starting. The rotational speed is not controlled during the subsequent steady operation, and is not controlled based on the rotational speed.

  Therefore, the present invention can change the ship speed without using an inverter or a variable pitch propeller, and can control the electric propulsion ship, in particular, the control apparatus for the electric propulsion ship that can start the induction motor without excessive start current. The object is to provide a system and an electric propulsion ship.

In the control device for an electric propulsion ship according to the first aspect of the present invention, a synchronous generator driven by a prime mover whose rotation speed can be adjusted by the rotation speed control means, and an excitation voltage and / or excitation applied to the synchronous generator An excitation adjuster that adjusts the current and an induction motor that is driven by the electric power generated by the synchronous generator and that is connected to the propeller are further synchronized by adjusting the rotational speed of the prime mover with the rotational speed control means. a first power generation control mode for controlling the power generation voltage of the generator, by only adjusting the excitation voltage and / or the excitation current in the excitation regulator and a second power generation control mode for controlling the power generation voltage of the synchronous generator , it switches to determine whether the rotation speed or of the synchronous generator frequency of the prime mover, or generated voltage of the synchronous generator is higher or lower than a predetermined value, the switching control of the power generation voltage of the synchronous generator Characterized by comprising a power control mode switching means for cooperating instead. According to the first aspect of the present invention, the ship speed can be changed without changing the inverter or the variable pitch propeller blade angle by controlling the power generation voltage of the synchronous generator in the first power generation control mode. In addition, the induction motor can be started without excessive start current by the second power generation control mode. In addition, the first power generation control mode and the second power generation, for example, with a lower limit value of the motor speed or a predetermined power generation voltage with reference to the motor speed or the frequency of the synchronous generator or the power generation voltage of the synchronous generator, are used. By switching between the control modes, the start-up current of the induction motor can be suppressed to perform a soft start, and after the start, the generated voltage of the synchronous generator can be controlled by the number of revolutions of the prime mover.

The present invention 請 Motomeko 2 wherein, in the second power generation control mode, characterized by keeping the rotational speed of the prime mover to a predetermined constant value. According to the second aspect of the present invention, the prime mover can be controlled to rotate at a constant rotational speed, and the generated voltage of the synchronous generator can be gradually increased under the constant rotational speed of the prime mover.

According to a third aspect of the present invention, the rotational speed of the prime mover and the generated voltage of the synchronous generator are controlled in a predetermined relationship. According to the third aspect of the present invention, for example, the rotational speed of the induction motor can be controlled by controlling the rotational speed of the prime mover and the generated voltage of the synchronous generator by a proportional relationship.

In the control system for an electric propulsion ship using the electric propulsion ship control device corresponding to the present invention as set forth in claim 4 , the synchronous generator and the induction motor are connected to the bus, and the voltage of the bus is changed from 0 to a predetermined upper limit value. The frequency of the bus is changed from a predetermined lower limit value to a predetermined upper limit value. According to this invention of Claim 4 , the rotation speed of an induction motor can be controlled by controlling the frequency and voltage of the bus line which connected the synchronous generator.

The present invention according to claim 5 is characterized in that the voltage and frequency of the bus are changed while maintaining a predetermined relationship. According to the fifth aspect of the present invention, the induction motor can be controlled by a change that maintains a predetermined relationship between the voltage and frequency of the bus.

The present invention described in claim 6 is a synchronous generator in which at least a first synchronous generator and a second synchronous generator are connected to a bus, and the first synchronous generator and the second synchronous generator are connected. It has a synchronous operation switching means for separating. According to the sixth aspect of the present invention, the first synchronous generator and the second synchronous generator can be operated independently or synchronously by the synchronous operation switching means.

According to the seventh aspect of the present invention, there is provided an electric power for disconnecting the bus connected to the general load on the ship and connected to the general load on the ship and the bus connected to the synchronous generator and the induction motor. It has system switching means. According to the seventh aspect of the present invention, the power supply to the induction motor and the power supply to the ship general load can be shared, and the power supply to the induction motor can be changed from the power supply to the ship general load. It can also be done separately.

In the present invention according to claim 8 , when the first synchronous generator and the second synchronous generator cannot be operated in synchronization, the first synchronous generator and the second synchronous power generation are performed by the synchronous operation switching means. It is characterized by separating the machine. According to the present invention described in claim 8 , by performing the single operation, the rotational speed of the prime mover can be greatly varied, and even if the rotational speed varies, the engine can be operated without any problem.

According to the ninth aspect of the present invention, when the first synchronous generator and the second synchronous generator can be operated in synchronization, the first synchronous generator and the second synchronous power generation are performed by the synchronous operation switching means. It is characterized by connecting the machine. According to the present invention as set forth in claim 9, when the rotational speed fluctuation of the prime mover is small, a plurality of prime movers can be controlled in synchronization.

In the electric propulsion ship control system using the electric propulsion ship control device corresponding to the present invention as set forth in claim 10, the generated voltage setting means for setting the generated voltage of the synchronous generator, the generated voltage of the synchronous generator A power generation voltage detection means for detecting, and the power generation control of the synchronous generator is performed by comparing the set power generation voltage set by the power generation voltage setting means with the power generation voltage detected by the power generation voltage detection means. According to the tenth aspect of the present invention, the synchronous generator can be controlled to generate power so as to obtain a set power generation voltage set by the power generation voltage setting means by feeding back the power generation voltage detected by the power generation voltage detection means.

The present invention according to claim 11 includes a rotation speed setting means for setting the rotation speed of the propeller, and a conversion means for converting the set rotation speed set by the rotation speed setting means into a set power generation voltage of the power generation voltage setting means, The power generation control of the synchronous generator is performed according to the setting of the rotational speed of the rotational speed setting means. According to the eleventh aspect of the present invention, the power generation control can be performed by simply setting the power generation voltage in accordance with the set rotation speed of the propeller.

According to a twelfth aspect of the present invention, the generated voltage and the frequency are changed in a predetermined relationship according to the set generated voltage set by the generated voltage setting means. According to this invention of Claim 12 , the rotation speed of a propeller can be adjusted with the predetermined relationship of a generated voltage and a frequency.

According to a thirteenth aspect of the present invention, the rotational speed of the prime mover is adjusted by the rotational speed control means in accordance with the set power generation voltage set by the power generation voltage setting means. According to the present invention as set forth in claim 13 , the rotational speed of the prime mover can be adjusted and changed by the rotational speed control means in accordance with the set power generation voltage.

An electric propulsion ship control system using an electric propulsion ship control device corresponding to the present invention as set forth in claim 14 is characterized by comprising setting means for setting the operating state of the propeller accompanying the maneuvering. According to the present invention as set forth in claim 14 , for example, stop, start, acceleration, deceleration, reverse rotation, and crash astern can be performed by the setting means.

According to the fifteenth aspect of the present invention, the setting means is a start setting means, and when starting is set by the start setting means, the generated voltage of the synchronous generator is adjusted only by adjusting the excitation voltage and / or the excitation current with the excitation adjuster. The second power generation control mode for controlling the power generator is used, and the power generation voltage of the synchronous generator is gradually increased from 0 V and changed. According to the present invention as set forth in claim 15 , the induction motor is started without excessively increasing the starting current by gradually increasing the power generation voltage of the synchronous generator under an arbitrary constant starting rotational speed of the prime mover. be able to.

According to the sixteenth aspect of the present invention, the setting means is acceleration / deceleration setting means, and when the acceleration / deceleration setting means sets acceleration / deceleration, the rotational speed control means adjusts the rotational speed of the prime mover. Thus, the first power generation control mode for controlling the power generation voltage of the synchronous generator is used. According to the sixteenth aspect of the present invention, the speed can be increased or decreased by changing the rotational speed of the prime mover.

According to the seventeenth aspect of the present invention, the setting means is a reverse rotation setting means, and when the reverse rotation operation is set by the reverse rotation setting means, the electric power supplied to the induction motor is reversed in phase and the excitation voltage and / or by the excitation regulator. A second power generation control mode in which the power generation voltage of the synchronous generator is controlled only by adjusting the excitation current is used, and the power generation voltage of the synchronous generator is gradually increased from 0 V and changed. According to the present invention as set forth in claim 17 , the reverse rotation can be performed by applying a reverse phase voltage to the induction motor, and by gradually increasing the power generation voltage of the synchronous generator, the induction current is not excessively increased. The motor can be started.

The present invention of claim 18 Symbol mounting, the setting means is stopped setting means, when the set stop at the stop setting means is characterized by stopping the motor after stopping the supply of power to the induction motor. According to the 18th aspect of the present invention, the supply of electric power to the induction motor can be ensured, and for example, the engine after idling can be idle.

In the electric propulsion ship according to the nineteenth aspect of the present invention, a control system for these electric propulsion ships is mounted. According to the present invention as set forth in claim 19 , the ship speed can be changed without changing the inverter or the variable pitch propeller blade angle, and the starter current is not excessively increased by the second power generation control mode. An electric propulsion ship can be provided.

According to the control device for an electric propulsion ship of the present invention, the ship speed is changed without changing the inverter or the variable pitch propeller blade angle by controlling the power generation voltage of the synchronous generator in the first power generation control mode. In addition, the induction motor can be started without excessive start current by the second power generation control mode. In addition, the first power generation control mode and the second power generation, for example, with a lower limit value of the motor speed or a predetermined power generation voltage with reference to the motor speed or the frequency of the synchronous generator or the power generation voltage of the synchronous generator, are used. By switching between the control modes, the start-up current of the induction motor can be suppressed to perform a soft start, and after the start, the generated voltage of the synchronous generator can be controlled by the number of revolutions of the prime mover.

Also, in the second power generation control mode, when keeping the rotational speed of the prime mover at a predetermined constant value, it can be controlled so as to rotate the motor at a constant rotational speed, synchronized under a constant rotational speed of the prime mover The generated voltage of the generator can be gradually increased.

  In addition, when controlling the rotational speed of the prime mover and the generated voltage of the synchronous generator in a predetermined relationship, for example, the rotational speed of the induction motor is controlled by controlling the rotational speed of the prime mover and the generated voltage of the synchronous generator by a proportional relationship. You can control the number.

  According to the control system for an electric propulsion ship of the present invention, the rotation speed of the induction motor can be controlled by controlling the frequency and voltage of the bus connected to the synchronous generator.

  In addition, when the voltage and frequency of the bus are changed while maintaining a predetermined relationship, the induction motor can be controlled by a change that maintains the predetermined relationship between the voltage and frequency of the bus.

  In addition, as a synchronous generator, at least a first synchronous generator and a second synchronous generator are connected to a bus, and a synchronous operation switching means for disconnecting the first synchronous generator and the second synchronous generator is provided. In this case, the first synchronous generator and the second synchronous generator can be operated independently or synchronously by the synchronous operation switching means.

  In addition, when the inboard general load used on the ship is connected to the bus, and there is a power system switching means for separating the bus to which the inboard general load is connected and the bus to which the synchronous generator and the induction motor are connected The power supply to the induction motor and the power supply to the general ship load can be shared, and the power supply to the induction motor can be separated from the power supply to the general ship load.

  When the first synchronous generator and the second synchronous generator cannot be operated in synchronization with each other, and the first synchronous generator and the second synchronous generator are separated by the synchronous operation switching means, By performing the independent operation, the rotational speed of the prime mover can be greatly varied, and even if the rotational speed varies, the engine can be operated without any problem.

  In addition, when the first synchronous generator and the second synchronous generator can be operated in synchronization with each other, the first synchronous generator and the second synchronous generator are connected by the synchronous operation switching means. When the rotational speed fluctuation of the prime mover is small, a plurality of prime movers can be controlled in synchronization.

  According to the control system for an electric propulsion ship of the present invention, the synchronous generator can be controlled to generate power so as to obtain a set generated voltage set by the generated voltage setting means by feeding back the generated voltage detected by the generated voltage detecting means.

  The rotation speed setting means for setting the rotation speed of the propeller, and the conversion means for converting the set rotation speed set by the rotation speed setting means into the set power generation voltage of the power generation voltage setting means, the rotation speed of the rotation speed setting means. When the power generation control of the synchronous generator is performed according to the above setting, the power generation control can be performed by simply setting the power generation voltage according to the set rotation speed of the propeller.

  Further, when the generated voltage and the frequency are changed in a predetermined relationship according to the set generated voltage set by the generated voltage setting means, the rotation speed of the propeller can be adjusted by the predetermined relationship between the generated voltage and the frequency.

  In addition, when the rotational speed of the prime mover is adjusted by the rotational speed control means according to the set power generation voltage set by the generated voltage setting means, the generated voltage or frequency is changed by adjusting the rotational speed of the prime mover by the rotational speed control means. be able to.

  According to the control system for an electric propulsion ship of the present invention, for example, stop, start, acceleration, deceleration, reverse rotation, and crash astern can be performed by the setting means.

  The setting means is a start setting means. When the start is set by the start setting means, the second power generation control mode is used, and the excitation generator and the excitation current are adjusted only by adjusting the excitation voltage and / or the excitation current with the excitation adjuster. When the generated voltage is controlled and the generated voltage of the synchronous generator is gradually increased from 0V, the generated voltage of the synchronous generator is gradually increased under any constant starting rotational speed of the prime mover. The induction motor can be started without excessive start current.

  Further, the setting means is an acceleration / deceleration setting means. When acceleration / deceleration setting means is set by the acceleration / deceleration setting means, the generator voltage of the synchronous generator is adjusted by adjusting the number of revolutions of the prime mover by the revolution number control means. When controlling the speed, the speed can be increased or decreased by changing the rotational speed of the prime mover.

  Further, the setting means is a reverse rotation setting means, and when reverse rotation operation is set by the reverse rotation setting means, only the excitation voltage and / or the excitation current is adjusted by the excitation adjuster with the power supplied to the induction motor being in reverse phase. When the second power generation control mode for controlling the power generation voltage of the synchronous generator is used and when the power generation voltage of the synchronous generator is gradually increased from 0 V and changed, the reverse rotation is achieved by applying a reverse phase voltage to the induction motor. The induction motor can be started without excessively increasing the starting current by gradually increasing the power generation voltage of the synchronous generator.

  Further, the setting means is a stop setting means, and when stopping is set by the stop setting means, when stopping the prime mover after stopping the supply of power to the induction motor, the supply of power to the induction motor is secured. Above, for example, idling of the prime mover after stopping can be performed.

  According to the electric propulsion ship of the present invention, the ship speed can be changed without changing the inverter or the variable pitch propeller blade angle, and the induction motor can be started without excessive start current by the second power generation control mode. An electric propulsion ship can be provided.

The basic block diagram which shows the control system of the electric propulsion ship by one Embodiment of this invention Block diagram showing the control system of the electric propulsion ship Explanatory drawing which shows the control method of the 1st and 2nd electric power generation control mode in the control system of the same electric propulsion ship Control flow chart in the control system of the electric propulsion ship Conceptual diagram of setting means in the control system of the electric propulsion ship The block diagram which shows the control system of the electric propulsion ship by other embodiment of this invention. FIG. 6 is a block diagram illustrating a method for synchronizing an electric propulsion ship and a method for reverse switching according to still another embodiment of the present invention. A diagram showing the relationship between motor speed (frequency) and voltage

FIG. 1 is a basic configuration diagram showing an electric propulsion ship control system according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the electric propulsion ship control system.
As shown in FIG. 1, an electric propulsion ship according to an embodiment of the present invention includes a synchronous generator 20 driven by a prime mover 10 and an induction motor 30 driven by electric power generated by the synchronous generator 20. The propeller 40 is rotated by the induction motor 30. In the synchronous generator 20, the excitation voltage and / or the excitation current is adjusted by the excitation adjuster 62.
The motor 10, the synchronous generator 20, the induction motor 30, the propeller 40, and the excitation adjuster 62 mainly constitute an electric propulsion ship control device.
In FIG. 2, the control system of the electric propulsion ship of the 2 axis | shaft propeller provided with the propeller 40a and the propeller 40b is shown.

The induction motor 30a and the synchronous generator 20a (first synchronous generator) are connected by a power supply line 51a. The power supply line 51a may connect the induction motor 30a and the synchronous generator 20a via the bus 80a.
The induction motor 30a to which the propeller 40a is connected is driven by the electric power generated by the synchronous generator 20a. The synchronous generator 20a is driven by the prime mover 10a.
Propeller 40a is connected to induction motor 30a via reduction gear 52a.

The rotational speed of the prime mover 10a is adjusted by a rotational speed control means 61a such as a governor. In the synchronous generator 20a, the excitation voltage and / or the excitation current is adjusted by the excitation adjuster 62a.
The generated voltage setting means 63a sets the generated voltage of the electric power generated by the synchronous generator 20a.
The generated voltage that can be set by the generated voltage setting means 63a is determined in consideration of the predetermined performance of the prime mover 10a and the electrical performance of the synchronous generator 20a and the induction motor 30a, and the frequency (the number of revolutions of the prime mover 10a) and the generated voltage. Established in relation to
The rotation speed control means 61a determines the frequency corresponding to the set power generation voltage in the power generation voltage setting means 63a and controls the rotation speed of the prime mover 10a.
In the synchronous generator 20a, the generated voltage is set by the generated voltage setting means 63a. The generated voltage detection means 64a detects the generated voltage of the synchronous generator 20a.

The synchronous generator 20a feeds back and compares the set power generation voltage set by the power generation voltage setting means 63a and the power generation voltage detected by the power generation voltage detection means 64a to obtain the set power generation voltage set by the power generation voltage setting means 63a. In this way, power generation is controlled by adjusting the rotational speed of the prime mover 10a.
The rotation speed control means 61a and the excitation adjuster 62a operate by mode switching based on the rotation speed by the power generation control mode switching means 65a. It can be said that the mode switching based on the rotation speed is the mode switching based on the generated voltage. There are two cases of mode switching based on this power generation voltage: a case where the set power generation voltage is used as a reference and a case where the detected power generation voltage is used as a reference.

  The power generation control mode switching means 65a calculates the rotational speed of the prime mover 10a from the set power generation voltage set by the power generation voltage setting means 63a, and determines whether the rotational speed is lower or higher than a predetermined value. When the rotational speed is higher than a predetermined value, the power generation control mode switching means 65a enters the first power generation control mode, and the rotational speed control means 61a adjusts the rotational speed of the prime mover 10a. When the rotational speed is lower than the predetermined value, the power generation control mode switching means 65a enters the second power generation control mode, maintains the rotational speed of the prime mover 10a at a predetermined value (for example, lower limit value), and is excited by the excitation adjuster 62a. The generated voltage of the synchronous generator 20a is controlled only by adjusting the voltage and / or exciting current.

In the second power generation control mode, the power generation control mode switching means 65a uses the excitation regulator 62a to gradually increase the power generation voltage from 0V to the set power generation voltage according to the power generation voltage set by the power generation voltage setting means 63a. Adjust the excitation voltage.
Even in the first power generation control mode, the power generation control mode switching means 65a applies an excitation voltage in proportion to the set power generation voltage. The excitation voltage of the excitation adjuster 62a may be a quadratic curve proportional to the set power generation voltage, a fixed value, or a stepwise value.
The generated voltage of the synchronous generator 20a detected by the generated voltage detection means 64a is fed back, compared with the set generated voltage in the generated voltage setting means 63a, and the generated voltage is set to the set generated voltage via the rotation speed control means 61a. Finely adjusted to

  This electric propulsion ship control device adjusts the rotational speed of the prime mover 10a with the rotational speed control means 61a, and adjusts the excitation voltage and / or the excitation current with the excitation regulator 62a, thereby adjusting the generated voltage of the synchronous generator 20a. The power generation voltage of the synchronous generator 20a is controlled only by maintaining the first power generation control mode to be controlled and the rotational speed of the prime mover 10a at a predetermined value and adjusting the excitation voltage and / or the excitation current with the excitation adjuster 62a. A second power generation control mode. In the first power generation control mode and the second power generation control mode, the rotational speed of the prime mover 10a is switched at a predetermined value, but can be switched based on the power generation voltage.

The induction motor 30b and the synchronous generator 20b (second synchronous generator) are connected by a power supply line 51b. The power supply line 51b may connect the induction motor 30b and the synchronous generator 20b via the bus 80b.
The induction motor 30b to which the propeller 40b is connected is driven by the electric power generated by the synchronous generator 20b. The synchronous generator 20b is driven by the prime mover 10b.
Propeller 40b is connected to induction motor 30b via reduction gear 52b.

The rotational speed of the prime mover 10b is adjusted by a rotational speed control means 61b such as a governor. In the synchronous generator 20b, the excitation voltage and / or the excitation current is adjusted by the excitation adjuster 62b.
The generated voltage setting means 63b sets the generated voltage of the electric power generated by the synchronous motor 20b.
The rotation speed control means 61b determines the frequency corresponding to the set power generation voltage in the power generation voltage setting means 63b and controls the rotation speed of the prime mover 10b.
In the synchronous generator 20b, the generated voltage is set by the generated voltage setting means 63b. The generated voltage detection means 64b detects the generated voltage of the synchronous generator 20b.
The synchronous generator 20b feeds back and compares the set power generation voltage set by the power generation voltage setting means 63b and the power generation voltage detected by the power generation voltage detection means 64b to obtain the set power generation voltage set by the power generation voltage setting means 63b. In this way, power generation is controlled by adjusting the rotational speed of the prime mover 10b.
The rotation speed control means 61b and the excitation adjuster 62b operate by mode switching based on the rotation speed by the power generation control mode switching means 65b.

  The power generation control mode switching means 65b calculates the rotational speed of the prime mover 10b from the set power generation voltage in the power generation voltage setting means 63b, and determines whether the rotational speed is higher or lower than a predetermined value. When the rotational speed is higher than a predetermined value, the power generation control mode switching means 65b enters the first power generation control mode, and the rotational speed control means 61b adjusts the rotational speed of the prime mover 10b. When the rotational speed is lower than the predetermined value, the power generation control mode switching means 65b enters the second power generation control mode, maintains the rotational speed of the prime mover 10b at a predetermined value (for example, lower limit value), and is excited by the excitation adjuster 62b. The generated voltage of the synchronous generator 20b is controlled only by adjusting the voltage and / or exciting current.

In the second power generation control mode, the power generation control mode switching means 65b is excited by the excitation regulator 62b so as to gradually increase the power generation voltage from 0 V to the installation voltage according to the power generation voltage set by the power generation voltage setting means 63b. Adjust the voltage.
Even in the first power generation control mode, the power generation control mode switching means 65b applies the excitation voltage in proportion to the set power generation voltage. Further, the excitation voltage of the excitation adjuster 62b may be a proportional value or a fixed value proportional to the set power generation voltage, or may take a stepwise value.
The generated voltage of the synchronous generator 20b detected by the generated voltage detection means 64b is fed back, compared with the set generated voltage in the generated voltage setting means 63b, and the generated voltage is set to the set generated voltage via the rotation speed control means 61b. Finely adjusted to

  This electric propulsion ship control device adjusts the rotational speed of the prime mover 10b by the rotational speed control means 61b and the excitation voltage and / or the excitation current by the excitation adjuster 62b to adjust the generated voltage of the synchronous generator 20b. The power generation voltage of the synchronous generator 20b is controlled only by maintaining the first power generation control mode to be controlled and the rotational speed of the prime mover 10b at a predetermined value and adjusting the excitation voltage and / or the excitation current with the excitation adjuster 62b. A second power generation control mode. In the first power generation control mode and the second power generation control mode, the rotational speed of the prime mover 10b is switched at a predetermined value. However, as described above, it can be switched based on the power generation voltage.

In the description of the above embodiment, the power generation voltage setting means 63a and the power generation voltage setting means 63b are different from the prime movers 10a and 10b and the synchronous generators 20a and 20b. The prime movers 10a and 10b and the synchronous generators 20a and 20b may be set by the generated power generation voltage setting means.
For example, the set power generation voltage can be changed by the power generation voltage setting means having one handle, and the rotation speed of each of the prime movers 10a and 10b can be changed.
In this case, the generated voltage is set by the generated voltage setting means, and the setting of the generated voltage can be changed by the handle when the prime movers 10a and 10b are synchronized.

FIG. 7 shows a method for synchronizing a plurality of prime movers and a method for reverse rotation switching.
In FIG. 7, the power state detectors 68a and 68b detect the voltage, frequency, and phase of the power supply lines 51a and 51b, and the synchronization input device 69 calculates the difference between the detected voltage, frequency, and phase. Time is detected.
The conditions set in advance, for example, the voltage difference is within ± 0.03%, the frequency difference is within ± 0.8 Hz, the phase difference is within ± π / 18 rad, and the allowable elapsed time is within one minute are satisfied. In this case, it is determined that the synchronization input condition is satisfied, and the synchronous operation switching means 81 is instructed to connect the bus 80a and the bus 80b.
When the synchronous operation condition is satisfied, the set power generation voltage can be changed by the power generation voltage setting means having one handle, and the rotation speeds of the propellers 40a and 40b can be changed in conjunction with each other.

The bus 80a to which the power supply line 51a is connected and the bus 80b to which the power supply line 51b is connected are connected to the bus 80 to which the inboard general load 71 is connected.
A general ship load 71 used on the ship is connected to the bus 80 via an inverter 72. The bus 80 is connected to a synchronous generator 20c that is driven by a prime mover 61c that can adjust the rotational speed.
The bus 80a to which the power supply line 51a is connected and the bus 80b to which the power supply line 51b is connected are connected by the synchronous operation switching means 81. Further, the bus 80b to which the power supply line 51b is connected and the bus 80 to which the inboard general load 71 is connected are connected by the power system switching means 82.

Therefore, the power supply line 51a and the power supply line 51b can be disconnected by the synchronous operation switching means 81, and the bus 80b to which the power supply line 51b is connected and the inboard general load 71 are connected by the power system switching means 82. It is possible to disconnect the bus 80 that is being connected.
That is, when the synchronous generator 20a and the synchronous generator 20b cannot be operated in synchronization, the synchronous operation switching means 81 disconnects the power supply line 51a and the power supply line 51b, and the power system switching means 82 causes the general load on the ship. By separating the bus 80 connected to 71 and the bus 80b connected to the power supply line 51b, the synchronous generator 20a and the synchronous generator 20b can be operated independently. By performing the independent operation, the rotational speeds of the prime mover 10a and the prime mover 10b can be greatly varied. Further, even if the rotational speed fluctuates for some reason and becomes out of synchronization, it can be operated without any problem.

  Further, when the synchronous generator 20a and the synchronous generator 20b can be operated in synchronization, the synchronous operation switching means 81 connects the power supply line 51a and the power supply line 51b via the buses 80a and 80b. When the rotational speed fluctuations of the prime mover 10a and the prime mover 10b are small, the synchronous generators 20a and 20b can be controlled in synchronization to supply power to the induction motors 30a and 30b in common.

Further, the synchronous generator 20a and the synchronous generator 20b can be operated in synchronization with each other, and when the load on the induction motors 30a and 30b is small, the bus 80 to which the inboard general load 71 is connected by the power system switching means 82, By connecting the bus 80b to which the power supply line 51b is connected, power can be supplied to the ship general load 71.
In this case, the rotational speed of the induction motors 30a and 30b can be controlled by controlling the frequency and voltage of the bus 80 while performing the synchronous operation of the synchronous generator 20a and the synchronous generator 20b. The voltage of the bus 80 can be changed from 0 to a predetermined upper limit value, and the frequency of the bus 80 can be changed from a predetermined lower limit value to a predetermined upper limit value. The change in voltage from 0 to a predetermined upper limit value may be a change having a discontinuous portion.
When the bus 80, the bus 80a, and the bus 80b are connected by the synchronous operation switching means 81 and the power system switching means 82, the general load on the ship is changed by changing the voltage and frequency of the bus 80 in a predetermined relationship. Power can be supplied to 71.

Further, even if there is a change in the voltage and frequency of the bus 80, the power to the inboard general load 71 can be adjusted by the inverter 72.
When connecting bus 80a and bus 80b, or when connecting bus 80, bus 80a, and bus 80b, the relationship between the voltage and frequency of bus 80a and bus 80b or bus 80, bus 80a, and bus 80b. Is a proportional relationship with a constant V / f, and the rotation speed of the induction motors 30a and 30b is changed only at the start by controlling the voltage with a constant frequency, and after the start, the induction motor 30a has a constant V / f relationship. , 30b is changed. The number of rotations of the induction motor 30 can be changed by voltage and frequency.

  When the bus 80, the bus 80a, and the bus 80b are connected, electric power can be supplied to the inboard general load 71 from the synchronous generators 20a and 20b driven by the prime movers 10a and 10b. To supply a predetermined frequency and a predetermined voltage.

  During steady operation, the bus 80, the bus 80a, and the bus 80b can be connected to operate the plurality of synchronous generators 20 in synchronization.

  When the power system switching means 82 disconnects the bus 80b to which the power supply line 51b is connected and the bus 80 to which the inboard general load 71 is connected, the inboard general load 71 is synchronized with the motor 61c. Electric power is supplied from the generator 20c. In this case, a predetermined frequency and a predetermined voltage can be supplied without using the inverter 72.

  When a plurality of synchronous generators 20 cannot be operated in synchronization, such as when the power generation voltage or frequency of the synchronous generator 20 is large at the time of starting, or when the synchronous generator 20 is not operated, the bus 80b is disconnected from the bus 80 and the bus 80a is connected to the bus 80b. The synchronous generator 20 is operated independently by separating from the above.

Thus, by having the power system switching means 82, the power supply to the induction motors 30a and 30b and the power supply to the inboard general load 71 can be shared, and the power supply to the induction motors 30a and 30b can be performed. It can also be performed separately from the power supply to the inboard general load 71.
In this embodiment, the induction motor 30 and the synchronous generator 20 are the same number, the induction motor 30a and the synchronous generator 20a are associated, and the induction motor 30b and the synchronous generator 20b are associated. 30 and the synchronous generator 20 may not be the same number. For example, two or three synchronous generators 20 for one induction motor 30 may be connected to buses 80a and 80b, and one synchronous generator 20 for two induction motors 30 may be connected to buses 80a and 80b. It may be connected to.

FIG. 3 is an explanatory diagram showing control methods in first and second power generation control modes in the control system for the electric propulsion ship.
FIG. 3A shows the relationship between the frequency (the number of revolutions) of the prime mover 10 and the voltage.
In FIG. 3A, the rotation speed is kept at a predetermined value at 30% of the rated frequency, a voltage of 30% of the rated voltage is obtained, and thereafter the frequency and the voltage are increased in a constant proportional relationship. . That is, when it exceeds 30% of the rated frequency, the rotational speed of the prime movers 10a and 10b is increased, and the rotational speed and the voltage are increased in a certain proportional relationship (first power generation control mode). In the first power generation control mode, the rotational speeds of the prime movers 10a and 10b are adjusted by the rotational speed control means 61a and 61b. Further, an excitation voltage and / or an excitation current proportional to the set power generation voltage is applied by the excitation adjusters 62a and 62b.
Further, up to 30% of the rated frequency, the number of revolutions of the prime mover 10 is kept constant, and the synchronous generator is obtained only by adjusting the excitation voltages of the excitation adjusters 62a and 62b as shown in FIG. The power generation voltages 20a and 20b are controlled (second power generation control mode).
In place of the excitation voltage of the excitation adjusters 62a and 62b, the excitation current may be controlled.

  In the first power generation control mode, the excitation voltage and / or excitation current may be proportional to the rotation speed by the excitation adjusters 62a and 62b, but the excitation voltage and / or excitation current by the excitation adjusters 62a and 62b. May be proportional to a quadratic curve, set to a fixed value, or changed stepwise to adjust the rotational speed of the prime movers 10a and 10b.

Until the prime mover 10 reaches a predetermined rotational speed, the power generation voltage of the synchronous generator 20 is controlled in the second power generation control mode.
In the second power generation control mode, by maintaining the rotational speed of the prime mover 10 at a predetermined constant value, the prime mover 10 can be controlled to rotate at a constant rotational speed, and excitation adjustment is performed under the constant rotational speed of the prime mover 10. By adjusting the excitation voltage and / or the excitation current of the generator 62, the power generation voltage of the synchronous generator 20 can be gradually increased. The second power generation control mode is performed at the time of starting when the induction motor 30 is connected.

Switching from the second power generation control mode to the first power generation control mode is performed, for example, at the lower limit value of the rotational speed of the prime mover 10 when the power generation voltage reaches the set power generation voltage. In the linkage by switching between the first power generation control mode and the second power generation control mode, the set value can be made different between when the rotational speed of the prime mover 10 is increased and when it is decreased. It is also possible to make adjustments by alternately performing the power generation control mode. In addition, the lower limit value of the prime movers 10a and 10b is not necessarily fixed, but may be inclined with respect to the set power generation voltage in the vicinity of the lower limit value, or may be changed in a curve to link the switching.
In the present embodiment, the first power generation control mode and the second power generation control mode are linked by switching the rotational speed of the prime mover 10 at a predetermined value, thereby suppressing the starting current of the induction motor 30 and performing a soft start. In addition, the power generation voltage of the synchronous generator 20 can be controlled by the prime mover 10 after the start.

  The rotational speed of the prime mover 10 and the generated voltage of the synchronous generator 20 are preferably controlled in a predetermined relationship. The rotational speed of the induction motor 30 can be controlled by controlling the rotational speed of the prime mover 10 and the generated voltage of the synchronous generator 20 by a proportional relationship, for example. In this case, the proportional relationship need not be a constant proportional coefficient, and may be a different proportional coefficient, and may be a quadratic curve relationship instead of a proportional relationship.

FIG. 4 is a control flowchart in the control system of the electric propulsion ship.
The control system in the electric propulsion ship has setting means 90 for setting the operating state of the propeller accompanying the maneuvering, and the setting means 90 can perform stop, start, acceleration, deceleration, reverse rotation, and crash astern. it can. As will be described later, the setting means 90 is linked to the power generation voltage setting means 63a and 63b of the synchronous generators 20a and 20b, and performs power generation control of the synchronous generators 20a and 20b.
When the setting means 90 is the start setting means 91 and the start setting means 91 sets the start, the power generation control mode switching means 65a and 65b only adjust the excitation voltage and / or the excitation current with the excitation adjusters 62a and 62b. Thus, the generated voltage of the synchronous generators 20a, 20b is controlled, and the generated voltage of the synchronous generators 20a, 20b is gradually increased from 0V and changed. In this way, the induction motors 30a and 30b can be started without excessively increasing the starting current by gradually increasing the generated voltage of the synchronous generators 20a and 20b under an arbitrary constant starting rotational speed of the prime movers 10a and 10b. can do.

Note that after the start setting by the start setting means 91, the operation proceeds to the acceleration / deceleration setting means 92.
When the setting means 90 is the acceleration / deceleration setting means 92 and the acceleration / deceleration setting means 92 sets acceleration / deceleration, it is determined whether or not the synchronous generators 20a and 20b can be operated synchronously (step) 1).
In step 1, when it is determined that the synchronous generators 20a and 20b can be operated synchronously, the synchronous operation means simultaneously adjusts the rotational speeds of the prime movers 10a and 10b with the rotational speed control means 61a and 61b. The power generation voltage of the generators 20a and 20b is controlled. As described above, when the plurality of synchronous generators 20a and 20b can be operated synchronously, it is possible to increase or decrease the speed by simultaneously changing the rotational speeds of the prime movers 10a and 10b.
In step 1, when it is determined that the synchronous generators 20a and 20b cannot be operated synchronously, the synchronous generators 20a and 20b perform an independent operation.
The acceleration / deceleration setting means 92 is set in the first power generation control mode and the second power generation control in an electric propulsion ship having a low rotation speed region where the rotation speed of the propeller 40 is extremely low during normal operation. It is also possible to control across modes.

When the setting means 90 is the reverse rotation setting means 93 and the reverse rotation setting means 93 sets the reverse rotation operation, the electric power supplied to the induction motors 30a and 30b is reversed in phase and the excitation voltage and / or the excitation voltage is adjusted by the excitation regulators 62a and 62b. The generated voltage of the synchronous generators 20a and 20b is controlled only by adjusting the current, and the generated voltage of the synchronous generators 20a and 20b is gradually increased from 0V and changed. Thus, the reverse rotation can be performed by applying the reverse phase voltage to the induction motors 30a and 30b, and by gradually increasing the power generation voltage of the synchronous generators 20a and 20b, the induction motor is not excessively increased. 30a and 30b can be reversely started.
When the reverse rotation setting means 93 is a crash astern, the reverse phase voltage is applied to the induction motors 30a and 30b from the moment the brake is applied, and is continuously applied until the propellers 40a and 40b are reversed. The magnitude of the voltage is adjusted so that the magnitude of the current is about twice or less than the rated current.

  When the setting unit 90 is the stop setting unit 94 and the stop setting unit 94 sets the stop, the motors 10a and 10b are stopped after the supply of power to the induction motors 30a and 30b is stopped. It is possible to idle the prime movers 10a and 10b after stopping after ensuring the supply of power to 30b.

FIG. 5 is a conceptual diagram of setting means in the control system of the electric propulsion ship.
In the case of an actual electric propulsion ship, the setting means is realized by setting means 90 having a lever 70 as shown in FIG. When the lever 70 is vertically set to the “stop” position, the propellers 40a and 40b are stopped, the prime movers 10a and 10b are stopped, and the generated power is not supplied. The “stop” position of this setting means 90 and the lever 70 constitute stop setting means 94.

When the lever 70 is tilted to the right, the “start” position is first reached. By bringing the lever 70 to the “start” position, the start setting means 91 described above is realized, and control at the time of start is also performed in terms of control (second power generation control mode).
When the lever 70 is fixed at the “start” position, the prime movers 10a and 10b are operated at the rotation speed of the lower limit value, and an output with a corresponding generated voltage is obtained.
By further tilting the lever 70 to the right, the state where the rotation speed of the propellers 40a and 40b is increased is set, the rotation speed of the prime movers 10a and 10b is increased, and the speed increase control is performed so as to gradually increase the generated voltage and frequency. Is done. Conversely, when the lever 70 is returned, a state is set in which the rotational speeds of the propellers 40a and 40b are lowered, and the speed reduction control is performed so that the rotational speeds of the prime movers 10a and 10b are lowered and the generated voltage and the frequency are gradually reduced (first operation). Power generation control mode).

The range for setting acceleration / deceleration in the setting means 90 and the lever 70 at this time constitute the acceleration / deceleration setting means 92.
In order to reversely rotate the propellers 40a and 40b, it is necessary to keep the lever 70 once at the “stop” position and issue a stop signal, and then further tilt the lever 70 to the left. When this reverse rotation is set, it starts from the start as in the normal rotation, the prime mover starts in the normal rotation and the synchronous generators 20a and 20b generate power in the second power generation control mode, but the power supply lines 51a and 51b As shown in FIG. 7, the three-phase line is switched to a state in which a reverse-phase voltage is applied by the reverse-phase selector switches 73a and 73b, and the rotation directions of the induction motors 30a and 30b are reversed. Similarly to the forward rotation, the control at the time of starting (second power generation control mode) and the control at the time of acceleration and deceleration (first power generation control mode) are also executed at the time of reverse rotation.

  The crash astern that causes the electric propulsion ship to stop urgently is control for switching the rotation of the propellers 40a and 40b from normal rotation to reverse rotation to urgently stop the ship. Setting can be made by moving the lever 70 from the forward rotation operation position (acceleration / deceleration position) to the left side of the crash astern position through the stop position. When this control is performed, the propellers 40a and 40b are initially driven in the forward direction by the hull, but when the normal rotation speed falls below a certain value, the prime mover 10 starts and the synchronous generator A so-called plugging brake is applied in which a reverse phase voltage is applied to the induction motors 30a and 30b so that the reverse phase voltage is applied to the induction motors 30a and 30b. If the reverse-phase voltage is continuously applied as it is, the rotation speed of the propellers 40a and 40b becomes 0, and if the reverse-phase voltage is further applied, the propellers 40a and 40b finally start reverse rotation. And it keeps rotating backward until the ship stops completely.

The setting range of the start, acceleration / deceleration, and crash astern on the left side of this setting means 90 and the lever 70 constitute a reverse rotation setting means 93.
For example, after processing a series of necessary controls that the lever 70 has passed, even if the lever 70 is fully swung to the left side as an emergency response from the state where the lever 70 with the propellers 40a and 40b rotating forward is present on the right side Crash astern driving. In other words, the vehicle enters the crash astern state after performing the shortest speed reduction from the forward rotation and starting the reverse rotation.
Further, as shown in FIG. 7, when stop, start, acceleration / deceleration, reverse rotation, and crash astern are set by the position setting of the lever 70 in the setting means 90, the set rotation speed of the propellers 40a and 40b is the generated voltage. Although it is transmitted to the setting means 63a and 63b and is transmitted to the rotational speed control means 61a and 61b of the prime movers 10a and 10b, some correction is performed because the induction motors 30a and 30b are slipped in the middle.

As is apparent from the above, even if the setting by the setting means 90 and the set power generation voltage by the power generation voltage setting means 63a and 63b are set immediately, the control system performs feedback control so that these setting conditions and the set power generation voltage can be obtained. To obtain the set condition and set power generation voltage over time.
In addition, the switching point in FIG. 5 shows an equivalent rotational speed position in the first power generation control mode and the second power generation control mode in both forward rotation and reverse rotation. This suggests that not only the second power generation control mode is necessarily started, but also the speed increase / deceleration speed range after the start may be partially performed in the second power generation control mode.

FIG. 6 is a block diagram showing a control system for an electric propulsion ship according to another embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same function structure as the said embodiment, and description is abbreviate | omitted.
As shown in FIG. 6, the electric propulsion ship according to the present embodiment generates the rotation speed setting means 66a and 66b for setting the rotation speed of the propellers 40a and 40b, and the set rotation speed set by the rotation speed setting means 66a and 66b. Conversion means 67a and 67b for converting into the set power generation voltage of the voltage setting means 63a and 63b are provided.
In the control system for an electric propulsion ship according to the present embodiment, power generation control of the synchronous generators 20a and 20b is performed in accordance with the rotation speed of the propeller 40 set by the rotation speed setting means 66a and 66b that is generally used when the ship is operated. According to the control system for an electric propulsion ship according to the present embodiment, power generation control can be performed in accordance with the set rotation speed of the propellers 40a and 40b.
The rotation speed conversion means 67a and 67b are preferably those that automatically convert the set rotation speed at the time of maneuvering into a set power generation voltage according to a predetermined table or a predetermined relational expression. Alternatively, auxiliary means such as a conversion table or a conversion graph that can read the set rotation speed and convert it into the set power generation voltage may be used.

  The rotation speed of the propellers 40a and 40b is adjusted by voltage and frequency. That is, as shown in FIG. 8, the frequency with respect to the prime movers 10a and 10b is changed according to the voltage while maintaining a predetermined relationship (V / f constant proportional relationship). FIG. 8 is a diagram corresponding to FIG.

  According to the power generation voltage set by the power generation voltage setting means 63a, 63b, the rotational speed control means 61a, 61b causes the rotational speed (frequency) of the prime movers 10a, 10b to have a predetermined relationship with the set power generation voltage (proportional relationship with a constant V / f) By changing while maintaining the rotation speed of the propellers 40a and 40b, the rotation speed of the propellers 40a and 40b can be adjusted.

The control system for an electric propulsion ship in each embodiment described above also has the following advantages that have not existed in the past.
That is, in the conventional electric propulsion ship control system, since the starting current of the induction motor at the time of starting is excessive, even if the propeller is propelled by one induction motor, two motors and synchronous generators are used. It was necessary. Also, a spare prime mover was necessary in case one of the prime movers failed (a total of 3 sets of prime movers and synchronous generators were required). However, in the control system of this electric propulsion ship, since the starting current is not excessive, even one set of the prime mover and the synchronous generator can be started, and the system can be constructed with two sets of the prime mover and the synchronous generator including the spare prime mover. Thereby, the installation space can be reduced and the cost can be rationalized.

  According to the present invention, the ship speed can be changed without changing the inverter and the variable pitch propeller blade angle, and the invention can be widely applied to electric propulsion ships.

10 prime mover 10a prime mover 10b prime mover 20 synchronous generator 20a synchronous generator (first synchronous generator)
20b Synchronous generator (second synchronous generator)
20c Synchronous generator 30 Induction motor 30a Induction motor 30b Induction motor 40 Propeller 40a Propeller 40b Propeller 51a Power supply line 51b Power supply line 52a Reduction gear 52b Reduction gear 61a Rotational speed control means 61b Rotational speed control means 61c Excitation motor 62a Excitation motor 62a Excitation adjuster 63a Generation voltage setting means 63b Generation voltage setting means 64a Generation voltage detection means 64b Generation voltage detection means 65a Generation control mode switching means 65b Generation control mode switching means 66a Rotation speed setting means 66b Rotation speed setting means 67a Conversion means 67b Conversion Means 71 Inboard general load 72 Inverter 80 Bus 80a Bus 80b Bus 81 Synchronous operation switching means 82 Power system switching means 90 Setting means 91 Start setting means 92 Acceleration / deceleration setting means 93 Reverse setting means 94 Stop setting means

Claims (19)

A synchronous generator driven by a prime mover capable of adjusting the rotational speed by the rotational speed control means;
An excitation regulator for adjusting the excitation voltage and / or excitation current applied to the synchronous generator;
An induction motor connected with a propeller, driven by the power generated by the synchronous generator,
Furthermore, a first power generation control mode for controlling the power generation voltage of the synchronous generator by adjusting the rotation speed of the prime mover with the rotation speed control means,
A second power generation control mode for controlling the generator voltage of the synchronous generator only by adjusting the excitation voltage and / or the excitation current in the excitation regulator,
Switching the number of revolutions of the prime mover or the frequency of the synchronous generator, or whether the generated voltage of the synchronous generator is higher or lower than a predetermined value, and switching the generated voltage of the synchronous generator A control device for an electric propulsion ship, comprising power generation control mode switching means for switching and linking . The control device for an electric propulsion ship according to claim 1 ,
In the second power generation control mode, the electric propulsion ship control device is characterized in that the rotational speed of the prime mover is maintained at a predetermined constant value. In the control device of the electric propulsion ship according to claim 1 or 2 ,
A control device for an electric propulsion ship that controls the rotational speed of the prime mover and the generated voltage of the synchronous generator in a predetermined relationship. An electric propulsion ship control system using the electric propulsion ship control device according to any one of claims 1 to 3 ,
Connecting the synchronous generator and the induction motor to a bus;
An electric propulsion ship control system, wherein the voltage of the bus bar is changed from 0 to a predetermined upper limit value, and the frequency of the bus bar is changed from a predetermined lower limit value to a predetermined upper limit value. A control system for an electric propulsion ship according to claim 4 ,
A control system for an electric propulsion ship, wherein the voltage and frequency of the bus are changed while maintaining a predetermined relationship. An electric propulsion ship control system according to claim 4 or 5 ,
As the synchronous generator, at least a first synchronous generator and a second synchronous generator are connected to the bus,
A control system for an electric propulsion ship, comprising: synchronous operation switching means for separating the first synchronous generator and the second synchronous generator. The control system for an electric propulsion ship according to any one of claims 4 to 6 ,
The bus is connected to a general ship load used on the ship,
An electric propulsion ship control system comprising power system switching means for separating the bus connected to the inboard general load from the bus connected to the synchronous generator and the induction motor. A control system for an electric propulsion ship according to claim 7 , which refers to claim 6 .
When the first synchronous generator and the second synchronous generator cannot be operated in synchronization,
A control system for an electric propulsion ship, characterized in that the first synchronous generator and the second synchronous generator are separated by the synchronous operation switching means. The control system for an electric propulsion ship according to claim 7 or 8 , which refers to claim 6 .
When the first synchronous generator and the second synchronous generator can be operated in synchronization with each other,
A control system for an electric propulsion ship, wherein the first synchronous generator and the second synchronous generator are connected by the synchronous operation switching means. An electric propulsion ship control system using the electric propulsion ship control device according to any one of claims 1 to 3 ,
Generated voltage setting means for setting the generated voltage of the synchronous generator;
Power generation voltage detection means for detecting the power generation voltage of the synchronous generator,
A control system for an electric propulsion ship, wherein power generation control of the synchronous generator is performed by comparing a set power generation voltage set by the power generation voltage setting means and a power generation voltage detected by the power generation voltage detection means. The control system for an electric propulsion ship according to claim 10 ,
A rotation speed setting means for setting the rotation speed of the propeller;
Conversion means for converting the set rotational speed set by the rotational speed setting means into the set power generation voltage of the power generation voltage setting means,
A control system for an electric propulsion ship, wherein power generation control of the synchronous generator is performed according to the setting of the rotation speed of the rotation speed setting means. The control system for an electric propulsion ship according to claim 10 or 11 ,
According to the set power generation voltage set by the power generation voltage setting means,
A control system for an electric propulsion ship, wherein the generated voltage and the frequency are changed while maintaining a predetermined relationship. The control system for an electric propulsion ship according to any one of claims 10 to 12 ,
According to the set power generation voltage set by the power generation voltage setting means,
A control system for an electric propulsion ship, wherein the rotational speed of the prime mover is adjusted by the rotational speed control means. An electric propulsion ship control system using the electric propulsion ship control device according to any one of claims 1 to 3 ,
A control system for an electric propulsion ship, comprising setting means for setting an operating state of the propeller associated with a ship maneuvering. A control system for an electric propulsion ship according to claim 14 ,
The setting means is start setting means,
When the start is set by the start setting means, the second power generation control mode for controlling the power generation voltage of the synchronous generator only by adjusting the excitation voltage and / or the excitation current with the excitation adjuster is used. ,
Furthermore, the electric propulsion ship control system is characterized in that the generated voltage of the synchronous generator is gradually increased from 0V. A control system for an electric propulsion ship according to claim 14 ,
The setting means is acceleration / deceleration setting means,
When acceleration / deceleration is set by the acceleration / deceleration setting means,
An electric propulsion ship control system using the first power generation control mode in which the rotational speed of the synchronous generator is controlled by adjusting the rotational speed of the prime mover with the rotational speed control means. A control system for an electric propulsion ship according to claim 14 ,
The setting means is a reverse rotation setting means;
When reverse rotation operation is set by the reverse rotation setting means,
The second power generation control for controlling the power generation voltage of the synchronous generator only by adjusting the excitation voltage and / or the excitation current with the excitation adjuster with the power supplied to the induction motor in reverse phase. Use the mode
Furthermore, the electric propulsion ship control system is characterized in that the generated voltage of the synchronous generator is gradually increased from 0V. A control system for an electric propulsion ship according to claim 14 ,
The setting means is a stop setting means;
When the stop is set by the stop setting means,
An electric propulsion ship control system, wherein the prime mover is stopped after the supply of electric power to the induction motor is stopped. An electric propulsion ship equipped with the control system for an electric propulsion ship according to any one of claims 4 to 18 .