KR101770129B1 - An automatic robust electric system against a failure of the hybrid electric ship for zero emission zone and the method thereof - Google Patents

An automatic robust electric system against a failure of the hybrid electric ship for zero emission zone and the method thereof Download PDF

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KR101770129B1
KR101770129B1 KR1020150142987A KR20150142987A KR101770129B1 KR 101770129 B1 KR101770129 B1 KR 101770129B1 KR 1020150142987 A KR1020150142987 A KR 1020150142987A KR 20150142987 A KR20150142987 A KR 20150142987A KR 101770129 B1 KR101770129 B1 KR 101770129B1
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South Korea
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converter
inverter
function
switching
failure
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KR1020150142987A
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Korean (ko)
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KR20170043721A (en
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김성회
구명완
김태완
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우리산업 주식회사
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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
    • 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
    • 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
    • H02J3/006—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • 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

Abstract

The present invention relates to a power system for responding to failure of a power conversion component in a ship of a ship operating a zero emission zone, and more particularly, to an electric system of a hybrid electric ship for improving system stability and efficiency of a hybrid electric ship, A control method thereof, comprising: a battery pack composed of at least one battery for supplying electric power; A motor drive inverter for generating an output for driving a propulsion motor of the ship with electric power supplied from a battery of an electric ship; A DC / DC converter for converting the DC power of the battery into a DC power suitable for the motor drive inverter; And an AC / DC converter for converting an AC power source of the diesel generator of the ship into a DC power source, wherein a connection structure of the inverter and the converter is determined by a failure condition of a part generated when the ship is operated, The switching circuit of the inverter is determined by the circuit of the inverter and the boosting topology of the converter is configured according to the structure of the inverter and the AC / DC converter, DC / DC converter, Mode connection switch unit.
By performing the functional sharing of the respective power conversion parts in the failure mode of the ship by the electrical system and the control method as described above, an optimized system connection of an appropriate vessel can be established according to each condition, Stability can be ensured, and efficient optimization of system management can be performed.

Description

[0001] The present invention relates to an electric system and a control method thereof for a hybrid electric ship operating at a zero emission zone,

The present invention relates to a small and medium-sized hybrid vehicle in which an electric generator using an engine is mounted on a ship, the motor is driven and the battery is charged using electric power from a generator, and a zero- The present invention relates to an electrical system for controlling failure of a hybrid electric vessel for operation of a zero-emissions Zero Emission Zone, and a control method thereof, for designing an electrical system of an electric ship.

As global warming by air pollution progresses rapidly, various countermeasures are being made to improve warming. In particular, countermeasures to control the generation of carbon dioxide, which causes air pollution, are being regulated in ships operating in the sea.

As one of the above countermeasures, vessels operating in the constant offshore waters of the sea are prohibited from using diesel generators. This regulated coastal zone is called the zero emission zone. 1 shows a zero emission zone set in the offshore sea.

Hybrid electric ship is a ship manufactured to be able to operate using electricity besides fossil raw materials such as petroleum. The hybrid electric vessel is charged by a charger, which is an external electric supply device, at the port in the zero emission zone, but charges the battery using power generated by the electric generator inside the vessel outside the zero emission zone.

On the other hand, the charged vessel passes through the zero emission zone to move from the charged place to the destination and can not use the diesel engine while passing through the zero emission zone. Therefore, a hybrid electric ship should always be designed to operate in a zero-emission region without using an engine [Patent Literatures 1 and 2]. In addition, in order to sufficiently pass the zero emission, a battery of sufficient capacity must be mounted on the rated reference of the ship motor.

Typical hybrid electric vessels are constructed with power conversion components such as generators, AC / DC converters, motor-driven inverters, and battery-powered DC / DC converters. Even if one of these parts is damaged, there is a serious problem in driving. However, the design is performed for each part without ensuring the integrated robustness against the problem.

Specifically, the ship can not perform the operation if any one of the drive-related core components of the inverter, the AC / DC coverer, and the DC / DC converter fails. If such a problem occurs during operation, the vessel shall be towed to the port by another vessel in order to resolve the failure of the problem, or the vessel shall be assisted by an external vessel or aircraft to resolve the failure.

Therefore, in order to solve this problem, it is necessary to perform the system design so that the ship can be driven without stopping the operation even if the parts breakage occurs. In other words, ship parts design technology and control technology to enable additional functions of other parts other than the specific functions of the parts when power failure occurs in any of the power conversion parts of the hybrid electric ship operating in medium and small size emission zones need.

[Patent Document 1] Korean Patent Laid-Open No. 10-2013-0060801 (published on June 10, 2013) [Patent Document 2] Korean Published Patent Application No. 10-2013-0141766 (published Dec. 27, 2013)

It is an object of the present invention to provide a switching circuit structure of inverters and converters that enables power conversion parts mounted on a ship to be commonly used in association with each other in function, Which is designed to enable the function of each unique electric system to be changed in accordance with the failure situation of each electric power component in case of a failure occurring in the operation of the electric power system, And a control method thereof.

That is, in the present invention, the switching circuit structure of the power conversion parts for driving the small and small ships is designed with a common structure, and based on this, A connection (interface) structure is constructed.

Specifically, in the present invention, a DC / DC bi-directional converter for charging a battery is selected for a power conversion switching topology structure that can operate with an inverter and a common circuit structure. It also manages the navigation system so that when the inverter fails, the battery charging converter replaces the function of the inverter or the inverter replaces the converter if it fails.

It is also an object of the present invention to provide an AC / DC converter for changing the AC voltage from a generator to a DC voltage when the bidirectional DC / DC converter for charging the battery is malfunctioning during operation, as a DC / DC converter for battery charging AC / DC converter as a DC / DC converter function.

According to an aspect of the present invention, there is provided an electric power steering system comprising: a motor-driven inverter for generating an output for driving a propulsion motor of a ship with electric power supplied from a battery; a DC / DC converter for converting DC power of the battery into DC power suitable for the motor- DC converter, and an AC / DC converter for converting an AC power source of the diesel generator of the ship into a DC power source constitutes an electrical system of the hybrid electric ship.

That is, the present invention provides a motor drive inverter that generates a motor drive output for propelling a ship from a DC power output of an AC / DC converter or a power supplied from a battery through a DC / DC converter DC power output, A DC / DC bidirectional converter for converting the AC power of the ship's diesel generator to a DC power source, a DC / DC bidirectional converter for converting the DC voltage of the ship into a DC power suitable for the inverter and generating a voltage charging the battery by inputting an output voltage of the AC / To an electric system of a hybrid electric vessel for operation in a near-zero-emission-zone operation, which constitutes an electric system of a hybrid electric-powered ship including a hybrid electric-

(A) determining a switching circuit structure of the DC / DC converter according to an inverter switching structure to be operated by the ship; (b) designing a topology of the battery charging converter based on the determined switching structure; (c) designing a connection structure that allows the battery-charging DC / DC converter and the inverter's core switching circuitry to be used interchangeably; (d) Design a connection structure that allows the battery-charging DC / DC converter and the AC / DC converter to be used mutually. And (e) controlling the designed inverter, the AC / DC converter, and the DC / DC converter to automatically change according to the failure mode condition. It also diagnoses the failure of the ship's real-time power conversion part and controls to modify the real-time system connection.

That is, the present invention provides an AC / DC converter for converting three-phase AC power to DC, an AC / DC converter for converting an AC / DC output voltage into a DC voltage, Constitute a commonized core switching common circuit of these three power conversion parts (inverter, AC / DC converter, DC / DC converter) including a DC / DC converter for charging the battery after switching to an output voltage; (b) configuring an emergency switching module circuit in the switching common circuit to make the three switching circuits mutually changeable; (c) constructing a DC / DC bidirectional converter topology circuit by applying the switching circuit and the emergency switching module; (d) Configure the inverter and AC / DC converter link circuit for mutual function switching in the voltage conversion topology of the DC / DC bidirectional converter circuit.

The present invention is characterized in that the switching circuit is constituted by six IGBTs (Insulated Gate Bipolar Transistors) or switching elements such as TRs. That is, in the step (a), the components of the emergency switch module that performs the shared switching parts IGBT and TR and the on / off function of the power supply line are connected to the rated output of the motor and the capacity of the rechargeable battery The components inside the switching module in the step (b) are selected by the switching part performance criteria of the common switching circuit, and the boosting structure and parts of the DC / DC converter are determined in the step (c). In addition, in step (c), inverter-converter mutual function switching is performed except for DC / DC boosting components (inductors, reverse power prevention switches).

The present invention also relates to an electrical system of a hybrid electric vessel for operation of an off-shore zero emission zone, comprising: a battery pack composed of at least one battery for supplying electric power; A motor drive inverter for generating an output for driving a propulsion motor of the ship with electric power supplied from a battery of an electric ship; A DC / DC converter for converting the DC power of the battery into a DC power suitable for the motor drive inverter; And an AC / DC converter for converting an AC power source of the diesel generator of the ship into a DC power source, wherein a connection structure of the inverter and the converter is determined by a failure condition of a part generated when the ship is operated, The switching circuit of the inverter is determined by the circuit of the inverter and the boosting topology of the converter is configured according to the structure of the inverter and the AC / DC converter, DC / DC converter, And a mode connection switch unit.

The present invention also relates to an AC / DC converter having a replaceable switching circuit of a DC / DC converter function when the three-phase AC power source is changed from DC to DC and the battery charging bidirectional DC / DC converter is in a fault state; An inverter for charging the battery using the AC / DC power source and supplying power from the battery to the inverter; And a bi-directional DC / DC converter having an inverter and a converter capable of replacing the switching function when the AC / DC converter is in a failure state; Inverter having a switching circuit capable of replacing a DC / DC converter when the motor is driven and malfunctioning, and if the ship is in error during operation, it is checked whether each power conversion part is faulty, And a control device for performing function substitution of the parts.

The present invention also relates to an electrical system for responding to a failure of a hybrid electric ship for operation of a marine flare emission zone zone comprising a generator, a battery, and a ship driving motor, AC / DC converter; A motor control inverter for generating an output for driving the ship driving motor from the battery or the power supplied from the AC / DC converter; A DC / DC converter for converting input DC power into DC power suitable for the motor control inverter; And a control device for controlling a power conversion component including the AC / DC converter, the motor control inverter, and the DC / DC converter, wherein the AC / DC converter, the motor control inverter, and the DC / DC converter is configured to have a switching module including at least six switching elements, and to connect the output of the switching module to at least two of the generator, the battery, and the ship-driving motor, And a changeover switch for selectively connecting any one of the two power conversion parts, wherein the control device controls the power conversion part of at least one of the AC / DC converter, the motor control inverter, and the DC / And if it fails, is replaced with another power conversion component that has not failed.

Further, the present invention is an electrical system for responding to a failure of a hybrid electric ship for navigation in a zero-emission zero emission zone, wherein the switching device is at least six IGBTs (Insulated Gate Bipolar Transistors) or TR switching devices.

Further, the present invention is an electrical system for responding to failure of a hybrid electric vessel for navigation in a zero-emission zero emission zone, wherein the changeover switch is located between the generator or the ship drive motor and the switching module, An emergency switch module controlled to be off or off; And a reverse current prevention switch located between the battery and the switching module and being controlled to be on or off.

In addition, the present invention provides an electrical system for responding to failure of a hybrid electric vessel for navigation in a zero-emission zero emission zone, wherein the controller controls the function of the AC / DC converter when the failure of the AC / DC converter, and when the failure of the DC / DC converter is detected, the function of the DC / DC converter is switched to the AC / DC converter or the inverter. If the inverter detects a failure And the function of the DC / DC converter is switched to the inverter.

Further, the present invention is an electrical system for responding to a failure of a hybrid electric ship for navigation in a zero-emission zero emission zone, wherein the control device detects a failure of the first power conversion component, which is one of the power conversion components, When performing the function switching to the second power conversion part different from the power conversion part, it is checked whether the second power conversion part is in the operation mode, and if it is not the operation mode, the function switching is performed. The function switching is performed if it is possible to stop the function, and the function switching is stopped if the stopping is not possible.

The present invention also relates to a control method of an electrical system for responding to a failure of a hybrid electric vessel for operation of a marine emission-based emission zone, which controls an electrical system, comprising the steps of: (a) Checking the converter, the DC / DC converter, the failure of the inverter in real time; (b) performing a function conversion of the AC / DC converter to the DC / DC converter by checking the failure of the AC / DC converter if the failure is detected; (c) checking whether the DC / DC converter is faulty and performing a function switching of the function of the DC / DC converter to the AC / DC converter or the inverter when a failure is detected; And (d) performing a function switching of the function of the DC / DC converter to the inverter when a failure is detected by checking whether the inverter is faulty.

In addition, the present invention is a control method of an electrical system for responding to failure of a hybrid electric ship for marine emission zero emission zone operation, wherein (b): (b1) checking whether the DC / step; (b2) performing the function switching from the DC / DC converter to the AC / DC converter if the mode is not the navigation mode; (b3) checking whether or not the vehicle can be stopped when the vehicle is in the navigation mode; (b4) performing the function switching from the DC / DC converter to the AC / DC converter if the stop is possible; And (b5) stopping the function of the AC / DC converter to the DC / DC converter if the stop is not possible.

According to another aspect of the present invention, there is provided a control method of an electrical system for responding to a failure of a hybrid electric ship for operation of a zero-emission zero emission zone, comprising the steps of: (c1) confirming whether the AC / DC converter is in a navigation mode; (c2) performing the function switching from the AC / DC converter to the DC / DC converter if the mode is not the navigation mode; (c3) checking whether or not the vehicle can be stopped when the vehicle is in the navigation mode; (c4) performing the function switching from the AC / DC converter to the DC / DC converter if it can be stopped; (c5) if it is not possible, confirming that the inverter is in the operating mode; (c6) performing the switching of the AC / DC converter to the inverter if the inverter is not in the navigation mode; (c7) checking whether the inverter can be stopped when the inverter is in the navigation mode; (c8) performing the function switching from the inverter to the DC / DC converter if the inverter can be stopped; (c9) stopping the function of the DC / DC converter to an AC / DC converter or an inverter if the inverter can not be stopped.

In addition, the present invention is a control method of an electrical system for responding to a failure of a hybrid electric ship for marine emission zero emission zone operation, wherein (d): (d1) confirming whether the DC / step; (d2) performing the function switching from the DC / DC converter to the inverter if the mode is not the navigation mode; (d3) checking whether or not the vehicle can be stopped when the vehicle is in the navigation mode; (d4) performing the function switching from the DC / DC converter to the inverter if the stop is possible; And (d5) stopping the function switching of the function of the AC / DC converter to the inverter if the stop is not possible.

As described above, according to the present invention, there is provided an electric system and a control method for a failure of a hybrid electric vessel for operation of an Emission Zone in Emission Zone according to the present invention, The circuit structure is determined, and the functional sharing of the respective power conversion parts is performed in the failure mode of the ship, whereby an optimized system connection of an appropriate ship can be established according to each condition. In addition, it is possible to secure the stability in the failure mode and efficiently perform system management optimization.

In addition, according to the present invention, there is provided an electrical system and a control method thereof for responding to failure of a hybrid electric ship for marine Emissionless Emission Zone operation, and a common control circuit of an AC / DC converter, a DC / DC converter, The control efficiency of the ship system can be increased even under conditions not in a failure state and the system management stability can be increased.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an example of a navigation condition of a zero emission zone used in the present invention. Fig.
2 is a block diagram showing a configuration of a hybrid electric ship according to an embodiment of the present invention;
3 is a power connection diagram of an electrical system of a hybrid electric ship used in a zero emission zone according to an embodiment of the present invention;
FIG. 4 is a block diagram of a common switching circuit for an electric motor drive inverter, an AC / DC converter, and a DC / DC converter constituted of an IGBT or TR according to an embodiment of the present invention.
5 is a diagram illustrating a common switching circuit of an inverter, an AC / DC converter, and a DC / DC converter including an IGBT or an TR and an emergency switch module according to an embodiment of the present invention
FIG. 6 is a block diagram of a mutual connection circuit of a motor-driven inverter and a DC / DC converter according to an embodiment of the present invention; FIG.
7 is a block diagram of a mutual connection circuit of an AC / DC converter and a DC / DC converter according to an embodiment of the present invention;
8 is a block diagram of a configuration for controlling an electrical system of a hybrid electric vehicle used in a zero emission zone according to an embodiment of the present invention;
9 is a control flowchart for switching a failure mode function according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings.

In the description of the present invention, the same parts are denoted by the same reference numerals, and repetitive description thereof will be omitted.

First, the overall configuration of an electric system of a hybrid electric ship for carrying out the present invention will be described with reference to Fig.

2, the hybrid electric ship according to the present invention includes a propulsion electric motor 10, a motor drive inverter 20, a battery pack 30, a diesel generator 40, a DC / DC converter 51, an AC / DC converter 52 as shown in Fig. In addition, it may further comprise a power management system (ES-PMS)

A propulsion motor or a ship drive motor (10) is an electric motor that drives a propeller of a ship and generates rotational power capable of directing the ship. The motor drive inverter or the motor control inverter 20 generates an output for driving the propulsion motor 10 by electric power supplied from the diesel generator 40 or the battery pack 30.

The DC / DC converter 51 is a converter for converting DC power of the battery pack 30 into DC power suitable for the motor drive inverter 20. The AC / DC converter 52 converts the AC power of the diesel generator 40 DC converter.

Next, the configuration of the electrical system of the hybrid electric vessel for operation of the off-shore zero emission zone according to the embodiment of the present invention and the power connection structure thereof will be described in more detail with reference to FIG.

As shown in FIG. 3, three-phase AC power is first input from the generator 100 to the AC / DC converter 102 through the power line 101. The input power is supplied to the inverter 104 via the power line 103 after the power conversion is performed in the AC / DC converter 102 or the DC / DC converter 108 is charged to charge the battery. . In the inverter 104, the output power is supplied to the motor 106 in three phases via the power supply line 105. In the DC / DC converter 108, the DC output converted by the AC / DC conversion is again supplied to the battery matching voltage And is supplied to the battery 110 through the power supply line 109.

Next, a configuration of a common switching circuit according to an embodiment of the present invention will be described in detail with reference to FIGS. 4 and 5. FIG.

 As shown in FIG. 4, the common switching circuit according to the present invention includes six switching elements 116. Preferably, the switching element is an IGBT (insulated gate bipolar transistor) or a transistor (TR) element. When the DC power is supplied from the DC power input terminals 111 and 112, the output voltage is transmitted to the output terminals 113, 114, and 115 through on / off operations of the six switching elements.

The common switching circuit refers to a circuit commonly included in both the AC / DC converter 102, the inverter 104, and the DC / DC converter 108. The common switch is configured identically to each of the power conversion parts 102, 104 and 108, and is controlled by changing the switching signal according to the function of each power conversion part. The AC / DC converter 102, the inverter 104, and the DC / DC converter 108 can commonly be replaced by a common switching circuit so that they can be interchanged between the power conversion parts in accordance with the connection and the switching signal of the input / .

On the other hand, the common switching circuit allows the output terminals to be dualized to operate with other power conversion parts.

5, the outputs of the output terminals 113, 114, and 115 are separated into an emergency switch module 117 and other connection terminal lines that turn on / off the power connection to the outside. The emergency switch module 117 performs on / off operations with the emergency switch terminals, which are the outputs of the emergency switch module, in order to use either the connection terminal or the emergency switch module in the dual connection with the outside .

On the other hand, if the AC / DC converter, the inverter, or the DC / DC converter fails, there is no on / off power off function for the DC connection or input terminal of each failed component. Power on / off (On / Off) by connecting emergency switch module.

Next, a configuration in which each of the power conversion parts 102, 104, and 108 are shared with each other according to an embodiment of the present invention will be described in detail with reference to Figs. 6 and 7. Fig.

First, a structure in which the inverter 104 and the switching modules of the DC / DC converter 108 are shared with each other will be described.

6, the switching module of the DC / DC converter 108 includes six switching elements, an inductor 115 connected in series to a connection terminal of each switching element, and a reverse current prevention switch 120 do. The switching module is connected to the battery 110 through a reverse current prevention switch 120. [ Therefore, the switching module is connected to or disconnected from the battery 110 in accordance with the ON or OFF state of the reverse current prevention switch 120.

An emergency switch module is connected to a connection terminal of each switching element of the switching module and is connected to the ship drive motor 106 through the emergency switch module. Accordingly, the switching module is connected to or disconnected from the ship drive motor 106 in accordance with the On or Off of the emergency switch module.

In addition, the switching module of the motor drive inverter 104 is also configured in the same structure as the switching module of the DC / DC converter 108. [

When the failure of the inverter 104 occurs during the operation, the battery charging DC / DC converter 108 can be used in common with the motor drive inverter 104. Conversely, if the DC / DC converter 108 fails, the inverter 104 can be used to perform the function of the DC / DC converter 108 for charging the battery.

Specifically, if the function of the inverter 104 fails, the DC / DC converter 108 stops the DC / DC conversion function for charging the battery for driving the motor, and after switching the function, outputs the switching connected through the emergency switch module To the motor (106). At this time, the power supply to the battery 110 is turned off by the reverse current prevention switch 120 and the interrupter in the battery. By the above operation, the inverter function is performed by the DC / DC converter 108.

Conversely, if the DC / DC converter 108 fails, the function of the inverter can be switched to stop the function of the inverter 104 and perform the DC / DC converter function.

Next, a structure in which the switching modules of the AC / DC converter 102 and the DC / DC converter 108 are mutually used will be described.

7, the switching module of the DC / DC converter 108 includes six switching elements, an inductor 115 connected in series to a connection terminal of each switching element, and a reverse current prevention switch 120 do. The switching module is connected to the battery 110 through a reverse current prevention switch 120. [ Therefore, the switching module is connected to or disconnected from the battery 110 in accordance with the ON or OFF state of the reverse current prevention switch 120.

An emergency switch module is connected to a connection terminal of each switching element of the switching module, and is connected to the generator 100 through the emergency switch module. Therefore, the switching module is connected to or disconnected from the generator 100 in accordance with the On or Off state of the emergency switch module.

Also, the switching module of the AC / DC converter 102 is configured in the same structure as the switching module of the DC / DC converter 108.

DC converter 108 in the event of a failure of the DC / DC converter 108. The DC / DC converter 108 performs the function of the DC / DC converter 108 by sharing the function of the AC / This function works the same as in the shared structure of the switching circuit of the inverter 104 and the DC / DC converter 108, and performs the function of converting. Since the DC / DC converter 108 is a bi-directional converter, it can supply power to the inverter 104 by converting power from the battery. In addition, when the AC / DC converter 102 fails, the DC / DC converter 108 is switched to use the AC / DC converter function.

Next, a configuration for controlling an electrical system for responding to a failure of a hybrid electric ship for operation of an off-road zero emission zone operation according to an embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 8, a control device 150 is additionally provided for controlling the electrical system of the electric ship according to the present invention. Further, electric power conversion parts such as the AC / DC converter 102, the inverter 104, and the DC / DC converter 108 are electrically connected to each other to drive other power conversion parts. Electrical connection is also established with the generator 100, the motor 106, and the battery 110.

On the other hand, the control device 150 transmits control signals to the power conversion parts such as the AC / DC converter 102, the inverter 104, and the DC / DC converter 108, And controls the functions or functions of other components. At this time, the control signal is a signal for controlling the emergency switch module or the reverse current prevention switch, or the switching signals for the switching module.

Next, a method of operating an electrical system for responding to a failure of a hybrid electric ship for operation of an off-shore zero emission zone navigation according to an embodiment of the present invention will be described in detail with reference to FIG. 9 shows a method for operating a ship by applying a sharing function of a switching module when a failure occurs in the converter and the inverter of the ship.

First, when the ship starts to operate, it enters a failure check mode for checking the failure of the converter and the inverter in real time (200). The AC / DC converter failure check step 201, the DC / DC converter failure check step 202, and the inverter failure check step 203 are sequentially performed after entering the failure check mode step 200.

If the failure of the AC / DC converter is detected in the performed AC / DC failure check mode step 200, the function switching with the DC / DC converter is performed. First, it is confirmed that the DC / DC converter to be converted is the current operating mode (operating) (206). As a result, if the operation mode is not set, the DC / DC converter 209 performs the function switching 209 to the AC / DC converter.

Also, in the navigation mode, it is confirmed whether or not stopping is possible (207). If it is possible to stop the DC / DC converter, the DC / DC converter performs the function switching to the AC / DC converter (209). Otherwise, the function of the AC / DC converter is stopped to switch the function to the DC / DC converter (216).

The operating mode of each part is called the operating mode if the part is operating (operating).

Next, if the AC / DC converter fails in the AC / DC converter failure check mode step 200, a failure check of the DC / DC converter is performed (202). If a fault occurs in the fault check of the DC / DC converter, perform the function switching between the DC / DC converter and the AC / DC converter or the inverter.

First, it is determined whether the AC / DC converter is in operation mode (210). If it is not the navigation mode, the conversion of the AC / DC converter to the DC / DC converter is performed (215). In the case of the navigation mode, it is checked whether or not the vehicle can be stopped (211). If the mode is the stoppable mode, the AC / DC converter is switched to the DC / DC converter (215), and if not, the operation mode check of the inverter is performed (212). If it is not the navigation mode, the function switching to the DC / DC converter of the inverter is performed (214). In the case of the navigation mode, a check is made as to whether stopping is possible (213). If it is possible to stop the function, the function is switched to the DC / DC converter (214). If not, the function switching is stopped (216).

Next, if the AC / DC converter is not malfunctioning in the AC / DC converter failure check mode step 201 and the failure check step 202 of the DC / DC converter is not failed, the inverter failure check is performed (203). The function of the inverter is to convert the DC / DC converter to an inverter so as to confirm whether the DC / DC converter is in operation mode (Step 218). If it is not the navigation mode, the DC / DC converter performs the function conversion to the inverter (221). In the navigation mode, it is checked whether the function of the DC / DC converter can be stopped (219). If it is possible to stop the operation, the function is switched to the inverter (221) or the function conversion is stopped (220).

In the above description, the case where suspension is possible is as follows.

For example, if a ship is operating in a non-zero mission, the engine will travel to its destination and the battery will be charged and operated at the same time. If the inverter fails, stop charging the battery and use the DC / Move. That is, since the battery is being charged, it can be stopped even in the navigation mode.

As another example, if the ship is using the engine to enter the zero missions in a non-zero mission during operation and the battery is being charged and operated at the same time, if the battery charge fails during preparation for entering the zero mission Charge the battery first using an AC / DC converter.

Also, if other conditions permit approval of the change in the zero emmission zone.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

10: Propulsion motor (motor) 20: Motor drive inverter
30: Battery pack 40: Diesel generator
51: DC / DC converter 52: AC / DC converter
60: Power management system 70: Battery charger
80: General system of power use

Claims (9)

1. An electrical system for responding to a failure of a hybrid electric ship for operation in an offshore zero emission zone zone comprising a generator, a battery, and a ship drive motor,
An AC / DC converter for converting AC power of the generator to DC power;
A motor control inverter for generating an output for driving the ship driving motor from the battery or the power supplied from the AC / DC converter;
A DC / DC converter for converting input DC power into DC power suitable for the motor control inverter; And
And a control device for controlling the AC / DC converter, the motor control inverter, and the power conversion part including the DC / DC converter,
The AC / DC converter, the motor control inverter, and the DC / DC converter commonly constitute a common switching circuit, and can be interchanged between the power conversion parts according to the switching signal,
Wherein the AC / DC converter, the motor control inverter, and the DC / DC converter have a switching module including at least six switching elements, and the output of the switching module is connected to the generator, the battery, And a changeover switch configured to be connectable to at least two power conversion parts and selectively connecting any one of the at least two power conversion parts,
The control device replaces and operates the other power conversion component that has not failed if the power conversion component of at least one of the AC / DC converter, the motor control inverter, and the DC / DC converter fails,
The controller controls the function of the AC / DC converter to function as the DC / DC converter when a failure of the AC / DC converter is detected. When the failure of the DC / DC converter is detected, DC converter or the inverter, and performs a function switching of the function of the inverter to the DC / DC converter when a failure is detected in the inverter. An electrical system for handling faults in hybrid electric vessels for navigation.
The method according to claim 1,
Wherein the switching device is at least six IGBTs (Insulated Gate Bipolar Transistors) or TR switching devices.
The apparatus according to claim 1,
An emergency switch module which is located between the generator or the ship driving motor and the switching module and is controlled to be on or off; And
And a reverse current blocking switch which is located between the battery and the switching module and is controlled to be on or off. The invention of claim 1, system.
delete The method according to claim 1,
When the first power conversion part, which is one of the power conversion parts, detects a failure and performs a function change to a second power conversion part other than the first power conversion part, the control device controls the second power conversion part If it is determined that the operation mode is not the operation mode, then the function switching is performed. If the operation mode is the navigation mode, the possibility of stopping is checked and if it is possible to stop, the function switching is performed. And an electric system for a failure of a hybrid electric ship for operation in a zero-emission Zero Emission Zone.
A control method of an electrical system for responding to a failure of a hybrid electric vessel for navigation in a maritime emission-zero emission zone, which controls the electrical system according to any one of claims 1 to 3 and 5,
(a) checking the failure of the AC / DC converter, the DC / DC converter, and the inverter in real time when the electric vessel starts the operation;
(b) performing a function conversion of the AC / DC converter to the DC / DC converter by checking the failure of the AC / DC converter if the failure is detected;
(c) checking whether the DC / DC converter is faulty and performing a function switching of the function of the DC / DC converter to the AC / DC converter or the inverter when a failure is detected; And
(d) checking whether the inverter is faulty and performing a function conversion of the function of the DC / DC converter to the inverter when a failure is detected. A control method of an electrical system for troubleshooting.
7. The method of claim 6, wherein, in step (b)
(b1) confirming that the DC / DC converter to be switched is in the operation mode;
(b2) performing the function switching from the DC / DC converter to the AC / DC converter if the mode is not the navigation mode;
(b3) checking whether or not the vehicle can be stopped when the vehicle is in the navigation mode;
(b4) performing the function switching from the DC / DC converter to the AC / DC converter if the stop is possible; And
(b5) stopping the function switching of the function of the AC / DC converter to the DC / DC converter if it is not possible to stop the operation of the hybrid electric vessel for operation of the offshore zero emission zone A method of controlling an electrical system for responding.
7. The method of claim 6, wherein in the step (c)
(c1) confirming that the AC / DC converter is in the operating mode;
(c2) performing the function switching from the AC / DC converter to the DC / DC converter if the mode is not the navigation mode;
(c3) checking whether or not the vehicle can be stopped when the vehicle is in the navigation mode;
(c4) performing the function switching from the AC / DC converter to the DC / DC converter if it can be stopped;
(c5) if it is not possible, confirming that the inverter is in the operating mode;
(c6) performing the switching of the AC / DC converter to the inverter if the inverter is not in the navigation mode;
(c7) checking whether the inverter can be stopped when the inverter is in the navigation mode;
(c8) performing the function switching from the inverter to the DC / DC converter if the inverter can be stopped;
(c9) stopping the function switching of the function of the DC / DC converter to an AC / DC converter or an inverter if the inverter can not be stopped. A control method of an electrical system for responding to failure of a hybrid electric ship.
7. The method of claim 6, wherein in the step (d)
(d1) confirming that the DC / DC converter to be switched is in the operation mode;
(d2) performing the function switching from the DC / DC converter to the inverter if the mode is not the navigation mode;
(d3) checking whether or not the vehicle can be stopped when the vehicle is in the navigation mode;
(d4) performing the function switching from the DC / DC converter to the inverter if the stop is possible; And
(d5) stopping the function switching of the function of the AC / DC converter to the inverter if it is not possible to stop the operation of the hybrid electric vehicle for the offshore zero emission zone operation. Control method of electrical system.
KR1020150142987A 2015-10-13 2015-10-13 An automatic robust electric system against a failure of the hybrid electric ship for zero emission zone and the method thereof KR101770129B1 (en)

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