KR101770125B1 - An automatic eletric system design method for the hybrid electric ship for zero emission zone and the system design method thereof - Google Patents

Abstract

The present invention relates to a design of a power system in a ship of a ship operating a zero emission zone, and to an electrical system of a hybrid electric ship for improving the system stability and efficiency of a hybrid electric ship and a designing method thereof Determining a size of the battery according to a zero emission condition to be operated by the ship; (b) configuring a first switching circuit of the motor-driven inverter and a first driver circuit outputting a control signal to the switching circuit based on the size of the battery; (c) structuring the switching circuit and the driver circuit in a laminated structure to constitute a single substrate; (d) configuring a second switching circuit and a second driver circuit of the DC / DC converter, the same as the first switching circuit and the first driver circuit; And (e) a third switching circuit and a third driver circuit of the AC / DC converter, wherein the third switching circuit and the first driver circuit are configured in the same manner as the first switching circuit and the first driver circuit.

Description

[0001] The present invention relates to an electric system for a hybrid electric vehicle and a method of designing the hybrid electric ship for a zero emission zone,

The present invention relates to a hybrid system for operating a zero-emission-zero emission zone in which a ship designs an electrical system of a small-sized hybrid electric-powered ship operating a zero-emission zone by driving a motor using only an electric battery without using an engine in a zero- To an electrical system of an electric ship and a design method thereof.

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 certain offshore seas are prohibited from using diesel generators, and the 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 area without using an engine. 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.

Conventional ships performed selection of batteries without including the concept of zero emission zone [Patent Literatures 1 and 2]. However, there is a need to vary the size of the battery according to the state of the zero emission zone. For example, when the operating distance of the zero emission zone is short and the operating environment is good, charging of the battery with a large capacity becomes longer than necessary and the efficiency of the battery is lowered. On the contrary, when the operating distance of the zero emission zone is long or the operating environment is bad, if the battery having a small capacity is installed, it may not pass the zero emission zone properly.

Therefore, there is a need for a technique for selecting the size of a battery of small and medium sized vessels as a variable size based on the zero emission existing in each region.

[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)

An object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to select the operating distance and operating environment of the zero emission zone to be operated by the ship, to select a suitable battery capacity in proportion to the selected criterion, And to design a switching control system of a suitable inverter, and to provide an electrical system of a hybrid electric vessel for operation in a zero-emission zone operation in the offshore area and a method for designing the same. That is, in the present invention, the size of a battery of a small-sized ship is selected as a zero-emission-based variable size existing in each region.

It is another object of the present invention to provide a switching control system for an AC / DC converter, a DC / DC converter, and a motor-driven inverter, in which the capacity of a battery is determined according to the size of a zero- The present invention provides an electric system of a hybrid electric vessel for operation in a zero-emission Zero Emission Zone and a method for designing the same. In other words, the driving structure of the battery charging converter and the switching modules are combined to constitute an electrical system of the ship as an integral system having a common structure. In such a common design, a structure common to three-phase switching is selected Through this, it is possible to secure the stability of the ship and optimize the efficiency through the modularized system management.

It is also an object of the present invention to provide a system and method for controlling the operation of a floating-point zero-emitter (EML) system, which is constituted by integrating a battery-related switching control system such as an AC / DC converter, a DC / DC converter, And to provide an electrical system and a method of designing a hybrid electric vessel for operating a seismic zone. In other words, each switching module of the ship is constructed by integrating IGBT and PCB, which are general switching elements, in face-to-face contact, and in particular, PCB and IGBT are connected without any shipment connection between signal input terminal of IGBT and gate drive board Bolt and nut structure.

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, which constitutes an electrical system of a hybrid electric ship, in a method for designing an electrical system for a hybrid electric vessel for operation in a near- (A) determining a size of the battery according to a zero emission condition to be operated by the ship; (b) configuring a first switching circuit of the motor-driven inverter and a first driver circuit outputting a control signal to the switching circuit based on the size of the battery; (c) structuring the switching circuit and the driver circuit in a laminated structure to constitute a single substrate; (d) configuring a second switching circuit and a second driver circuit of the DC / DC converter, the same as the first switching circuit and the first driver circuit; And (e) a third switching circuit and a third driver circuit of the AC / DC converter, wherein the third switching circuit and the first driver circuit are configured in the same manner as the first switching circuit and the first driver circuit.

In addition, the present invention is a method for designing an electrical system for a hybrid electric vessel for operation in a marine emissive zone, wherein, in the step (a), when the navigation route of the ship is an inland route, And the capacity of the battery is calculated by multiplying the distance of the zero emission zone by the battery capacity per unit distance and multiplying the adjustment factor value exceeding 1 by the distance of the zero emission zone when the navigation route is the sea route .

In addition, the present invention is a method for designing an electrical system for a hybrid electric vessel for marine emission-zero emission zone operation, wherein the adjustment element value is a value calculated by a magnitude of a motor torque with respect to a weight of a ship.

In the step (c), the output signal terminal of the driver circuit is aligned with the signal input terminal of the switching circuit to laminate the signal output terminal of the driver circuit, And is formed in a structure free from lines.

In addition, the present invention is a method for designing an electrical system for a hybrid electric vessel for operation of an off-shore zero emission zone, wherein the switching circuit is composed of six IGBT (Insulated Gate Bipolar Transistor) switching elements.

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, the size of the battery being determined according to a zero emission condition to be operated by the ship, and a first switching circuit And a first driver circuit for outputting a control signal to the switching circuit is constituted by the size of the battery, and the switching circuit and the driver circuit are constituted by a laminated structure, The second switching circuit and the second driver circuit of the converter or the third switching circuit and the third driver circuit of the AC / DC converter are configured in the same manner as the first switching circuit and the first driver circuit, respectively .

As described above, according to the electric system of the hybrid electric vessel for operation of the emissive zone in the emissive zone according to the present invention and the design method thereof, the size of the battery to be used in the zero emission zone is estimated by the current zero emission condition, By sharing the control module and independently optimizing the switching control module, it is possible to maximize the efficiency of the design by constructing an optimized system of an appropriate vessel according to each condition.

In addition, according to the electric system of the hybrid electric vessel for operation of the emissive zone of zero emissions according to the present invention and the method of designing thereof, the switching control system of the AC / DC converter, the DC / DC converter, It is possible to increase the efficiency and the stability of the management.

In addition, according to the electrical system of the hybrid electric vessel for the Emission Zone Emission Zone Operation according to the present invention and the method for designing the same, the switching control system is integrated with the integrated circuit board (PCB) and the same driving device IGBT circuit, Can be minimized, and the efficiency 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 flow chart illustrating a method of designing a system for a hybrid electric ship used in a zero emission zone according to an embodiment of the present invention.
4 is a view illustrating a coupling structure of an IGBT device and a driving PCB according to an embodiment of the present invention.
5 is a block diagram of a switching circuit of a motor drive inverter, an AC / DC converter, and a DC / DC converter 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 configuration 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)

The propulsion motor (10) is an electric motor for driving the propeller of the ship, and generates a rotational power capable of directly operating the ship. The motor drive 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, an electrical system of a hybrid electric vessel for operation of an off-shore zero emission zone and a design method thereof according to an embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 3, first, the size of the battery mounted on the ship is determined according to the characteristics of the zero emission zone (S31). To this end, it is confirmed whether the zero emission zone is an inland route or an ocean route (S31).

A battery mounted on a ship affects the selection of the capacity of the battery installed in the battery depending on whether the zero emission zone is inland or in the sea route condition. Inland routes are inland routes such as rivers or lakes, and generally operate under steady conditions without changing many environmental conditions. On the other hand, since there are various variable environments including waves in the sea area, it is necessary to design the battery with a slight adjustment margin.

If the navigation route is an inland route, the size of the battery is determined by multiplying the distance of the zero emission zone or the operating distance by the battery capacity per unit distance. Preferably, the battery capacity per unit distance is 16 kWH.

Next, when the navigation route is the sea route, the size of the battery is determined by multiplying the distance of the zero emission zone by the battery capacity per unit distance and multiplying the battery capacity by the factor of the adjustment factor (S33). When calibrating the battery capacity at sea, add a battery calibration function which takes as a factor the size of the motor torque relative to the weight of the ship. This is applied as an element for securing stability in a sea where many variables exist. That is, the adjustment factor value is a factor for the adjustment margin of the battery, taking into consideration various variables of the sea route, exceeding 1. Preferably, the adjustment factor is set within a value of 1.5 to 2. If the weight of the ship becomes heavier than the motor torque, if the wave or other external environmental factors suddenly change, it can not cope properly and the energy consumption can be increased accordingly. Therefore, the torque performance of the motor is designed to be linked to the consumption of the battery.

Next, when the battery capacity is determined and the battery design is finished, the design of the motor-driven inverter 20 for driving the motor (or the motor) is performed with reference to the capacity of the designed battery (S40). Preferably, the motor drive inverter 20 is designed by applying six switches of three phases. At this time, the type of IGBT (Insulated Gate Bipolar Transistor), which is a switching device, is determined (S41). The IGBT is designed in proportion to the motor capacity to be driven. Specifically, a field effect transistor (FET) is used when the battery is small, but the IGBT is used when the range exceeds 100 kW.

The configuration of the motor drive inverter 20 is constituted by an inverter control section, a switching driver circuit section, and a switching circuit as shown in FIG. 5A. At this time, the inverter control unit is disconnected, and the switching driver circuit unit and the switching circuit are integrally formed (S43). In particular, the switching driver circuit portion and the switching circuit are designed based on the capacity of the battery determined in advance.

The switching circuit is composed of six switching elements that are output or input in three phases. Preferably, each switching element is composed of an IGBT (Insulated Gate Bipolar Transistor) element. The switching driver circuit is a circuit for outputting a control signal for controlling each of the six switching elements. At this time, the inverter control unit and the switching driver circuit are configured separately.

As shown in FIG. 4, in order to maximize the safety and operation efficiency of the switching driver circuit with the IGBT, a switching circuit and an integrated structure without a signal line are formed. In the integrated structure, the driver terminal hole (or the driver output signal terminal) is aligned with the signal input terminal hole (or signal input terminal) of the IGBT to perform a structure without a line. That is, the switching driver circuit and the switching circuit are stacked facing each other.

The distance between the switching driver circuit and the switching element circuit can be minimized through the above-described laminated connection structure. Thus, the control of the switching system can be stably and effectively controlled.

FIG. 4 shows the combined state of the IGBT switching circuit PCB and the switching driver PCB. S101 shows one IGBT switching element, and S102 shows a driving signal input portion of the IGBT switching element. S103 denotes an IGBT driver board (or switching driver circuit), and S104 denotes a signal output portion of the driver circuit. The elements of the switching circuit S102 and the signal output portion S104 of the driver circuit are coupled to each other so as to face each other. By doing so, information transfer performs signal transfer without using a line for signal transfer.

Next, after the IGBT switching circuit configuration is determined, the AC / DC converter 52 and the DC / DC converter 51 are designed on the basis of the designed IGBT switching circuit configuration (S50). Preferably, the switching circuit is constituted by six switching elements for switching three phases. More preferably, the switching circuit and the switching driver circuit constituted by the DC / DC converter 51 and the AC / DC converter are constituted by the same switching circuit and switching driver circuit as the motor-driven inverter 20. [

By using this design method, the program platform and the hardware platform can be unified to enhance efficiency and stability, and the design can be facilitated.

That is, even if the control signal and the power supply signal of the switch are changed and used, the implantation is possible. That is, control can be performed without changing the program.

The invention made by the present inventors has been described concretely with reference to the embodiments. However, it is needless to say that the present invention is not limited to the embodiments, and that various changes can be made without departing from the gist of the present invention.

10: Propulsion 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 (6)

A DC / DC converter for converting the DC power of the battery into a DC power suitable for the motor-driven inverter; a DC / DC converter for converting the DC power of the battery into a DC power suitable for the motor-driven inverter; A method of designing an electrical system for a hybrid electric vessel for operation in a marine flare emission zone zone constituting an electrical system of a hybrid electric vessel including an AC / DC converter for converting an AC power source to a DC power source,
(a) determining the size of the battery according to a zero emission condition to be operated by the ship;
(b) configuring a first switching circuit of the motor-driven inverter and a first driver circuit outputting a control signal to the switching circuit based on the size of the battery;
(c) structuring the switching circuit and the driver circuit in a laminated structure to constitute a single substrate;
(d) configuring a second switching circuit and a second driver circuit of the DC / DC converter, the same as the first switching circuit and the first driver circuit; And
(e) constituting a third switching circuit and a third driver circuit of the AC / DC converter, and constituting the same as the first switching circuit and the first driver circuit,
DC / DC converter, the AC / DC converter, the switching circuit, and the driver circuit of the motor drive inverter, the DC / DC converter, and the AC / DC converter,
Wherein the output signal terminal of the driver circuit is aligned with the signal input terminal of the switching circuit in the step (c) so that the output signal terminal of the driver circuit is laminated to form a line-free structure. Electrical system design method.
The method according to claim 1,
In the step (a), when the navigation route of the ship is an inland route, the capacity of the battery is calculated by multiplying the distance of the zero emission zone by the battery capacity per unit distance, and when the navigation route is an ocean route, Wherein the capacity of the battery is calculated by multiplying the distance of the zone by the battery capacity per unit distance and multiplying by the adjustment factor value exceeding 1 again.
3. The method of claim 2,
Wherein the adjustment element value is a value calculated by the magnitude of the motor torque with respect to the weight of the ship.
delete The method according to claim 1,
Wherein the switching circuit is constituted by six IGBT (Insulated Gate Bipolar Transistor) switching elements. ≪ RTI ID = 0.0 > 11. < / RTI >
In an electrical system of a hybrid electric vessel for navigation in the Zero Emission Zone of the ROK,
A battery pack comprising 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,
The size of the battery is determined according to the zero emission condition to be operated by the ship,
A first switching circuit of the motor drive inverter and a first driver circuit for outputting a control signal to the switching circuit are configured by the size of the battery,
Wherein the switching circuit and the driver circuit are constituted by a laminated structure,
The second switching circuit and the second driver circuit of the DC / DC converter or the third switching circuit and the third driver circuit of the AC / DC converter are the same as the first switching circuit and the first driver circuit, respectively Lt; / RTI >
DC / DC converter, the AC / DC converter, the switching circuit, and the driver circuit of the motor drive inverter, the DC / DC converter, and the AC / DC converter,
Wherein an output signal terminal of the driver circuit is aligned with a signal input terminal of the switching circuit so as to be laminated so as to form a line-free structure.

Images