KR20160082945A - wireless charging monorail system - Google Patents

Abstract

The present invention relates to a wireless charging monorail system. More particularly, the present invention relates to a wireless charging monorail system which charges a battery by using wireless charge and regenerative breaking after a vehicle driving on a monorail is stopped to charge or drives along the monorail circulation route. According to the present invention, because a monorail battery can be charged by the wireless charge and the regenerative breaking, the battery charging time and battery capacity of an existing method can be reduced. So, economic feasibility can be secured with an operational method.

Description

[0001] The present invention relates to a wireless charging monorail system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless rechargeable monorail system of a steep slope in a mountainous area, and more particularly, to a monorail system in which a motor vehicle traveling on a monorail uses the capacity of a battery that is wirelessly charged during an uphill operation, The present invention relates to a wireless rechargeable monorail system for charging a battery capable of shortening the charging time required by a wired system using a power regeneration device.

The existing mountainous area monorail is divided into two types: an engine using fuel and an electric type using trolley wire. Engine type is used for cargo transportation and electric type is used for passenger transportation. However, the engine type is not suitable for transportation because of the noise and engine capacity limit, and electric type is not limited to open space of short section (about 500M or so) or along the side of the road. However, The trolley is disturbed by the seasonal temperature change and the trouble is caused by the temperature change. When the fallen leaves and the windy twigs fall from time to time, they become insulated and become insulated. The machine stops and the climate is sensitive to the lightning. have. However, the previous battery was very limited in terms of battery capacity, in terms of travel distance, charging time, battery purchase cost, battery maintenance cost, safety, and so on.

That is, there is a disadvantage in that the battery capacity is increased and the battery charging time is prolonged due to the increase in the vehicle cost by mounting the battery capacity in a vehicle with a usable capacity all day.

KR 10-2012-0016818 A

The present invention has been developed to solve such a problem. The present invention introduces a wireless rechargeable monorail system to convert it into an eco-friendly transportation means, and is independent of the battery capacity and combines an economical wireless charging and power regenerative device, The present invention provides a wireless rechargeable monorail system.

In addition, when the monorail which can operate the battery capacity only with the conventional battery is wired, the rapid charging is used during the stop or the running while the vehicle is running, the uphill section is operated by filling the insufficient capacity, and when the downhill section is operated from the normal, And to provide a wireless rechargeable monorail system capable of operating in a fully charged state when the battery is charged again by braking and then restarted from the starting point.

According to an aspect of the present invention, there is provided a wireless rechargeable monorail system comprising: a power feeding device installed at a loading and unloading station; A current collecting device installed at a lower portion of the vehicle and receiving power wirelessly to generate an induced voltage; A regulator for controlling an induced voltage generated in the current collector; A rectifier for converting an AC power of an induced voltage controlled by the regulator into a DC power; A motor for generating regenerative energy by regenerative braking of the vehicle traveling on the monorail; And

And a battery charged by the regenerative energy generated by regenerative braking of the motor, wherein the capacity of the battery is consumed up to 60% while climbing up the ascending section and consumed in the downward section The rechargeable battery is charged with the regenerative energy of 30 to 40% of the capacity, and is determined as the capacity to be fully charged by the electric power supplied from the power feeding device to the current collector wirelessly when waiting for 3 to 5 minutes.

Preferably, the power supply apparatus further includes a power supply device installed in an uphill interval to supply power to the current collector while the vehicle is in operation, when the determined capacity of the battery is insufficient to operate the specific section.

According to the present invention, since the monorail battery is charged using regenerative braking and wireless charging, economical efficiency can be ensured in a monorail operation mode in which the battery charging time and the battery capacity can be reduced.

In addition, since the electric monorail uses the trolley system, if the trolley has a foreign object (leaves, heavy snow, other electric power supply interfering substances), the electricity supply is stopped and the risk of the shutdown is high. However, Can be minimized.

In addition, there is an effect that the monorail can be operated very stably with electrical stability secured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a configuration of a battery type monorail system according to an embodiment of the present invention; FIG.
2 is a view showing a configuration of a monorail system of a battery and a wireless charging system;
3 is a diagram showing a configuration of a wireless power transmission system according to the present invention;
4 is a view showing an example of a vehicle driving method in the environmentally friendly electric monorail driving system of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a block diagram of a battery type monorail system according to an embodiment of the present invention.

The battery type monorail 10 uses the battery 20 as the only power source and uses the plug-in charge A and the regenerative breaking B The battery 20 is charged.

Hereinafter, a method of operating the battery type monorail system will be described.

a) Motor capacity selection

In the battery type monorail system, the output calculation formula for selecting the motor capacity is expressed by Equation 1 below.

Table 1 below shows parameters related to motor output in a battery type monorail system.

variable Contents

The mass of the vehicle

Acceleration of the vehicle

Acceleration of free fall due to gravity

The coefficient of rolling resistance between tires and road surface

The density of the ambient air

The coefficient of drag of the vehicle in the direction of travel (the direction of travel of the vehicle)

The cross-sectional area of the vehicle

Speed in the direction of travel

In other words, considering the aerodynamic drag and rolling resistance, the total weight of the monorail takes into consideration the vehicle and the maximum number of passengers (12 persons) with 15% margin.

는 1.225kg/m³, 타이어와 도로면 사이의 주행저항의 계수

는 일반적인 자동차용 타이어의 값인 0.002~0.003을 적용한다. 운행 방향에서 차량의 항력 계수

는 일반적인 자동차의 값인 0.35~0.4를 적용한다.When the vehicle is traveling at a constant speed, the acceleration a of the vehicle is set to zero, and the density of the surrounding air

Is 1.225 kg / m ³ , the coefficient of running resistance between the tire and the road surface

Is 0.002 ~ 0.003 which is the value of general automobile tire. The vehicle's drag coefficient

Is applied to the value of 0.35 ~ 0.4, which is the value of general automobile.

b) Calculating energy consumption

The energy consumption calculation formula in the battery type monorail system is shown in Equation 2 below.

Table 2 below shows the parameters for battery capacity calculation in a battery type monorail system.

Motor output (kW)

Regenerative motor output (kW)

Travel distance (m)

Regenerative braking section (m)

Number of service

Average speed (m / min)

Charging speed (kW)

Charging time (h)

Number of Charges

Battery capacity

SOC lower limit value (%)

c) Calculation of energy regeneration

In the battery type monorail system, the energy regeneration amount calculation expression is expressed by Equation 3 below.

d) Calculation of charge

In the battery type monorail system, the charging amount calculating equation is expressed by Equation (4) below.

e) Calculating the battery capacity (considering the SOC lower limit)

The battery capacity calculation formula in the battery type monorail system is expressed by Equation (5) below.

2 is a view showing a configuration of a monorail system of a battery and a wireless charging system.

As shown in the figure, the monorail 10 of the battery and the wireless charging system uses the battery 20 as the only power source, and the plug-in charging A and the regenerative braking B by the motor 30, And the battery 20 is charged using the energy generated at the time of charging and the wireless charge C using the charge / collect system.

Hereinafter, a method of operating the battery and the wireless charging type monorail system will be described.

B) calculation of energy consumption, c) calculation of energy regeneration amount, and d) calculation of the total amount is the same as the operation method of the battery type monorail system described above Therefore, a description thereof will be omitted. In the following, e) calculation of the charge amount using the wireless power transmission and f) calculation of the battery capacity (considering the SOC lower limit value) will be described.

e) calculating the amount of charge using wireless power transmission

In the monaural system of the battery and the wireless charging system, the charging amount calculation formula using the wireless power transmission is expressed by Equation (6).

Table 3 below shows parameters for calculating the wireless charge amount in the battery and the monorail system of the wireless charging system.

Number of wireless charges

Wireless charging speed

Wireless charging time

f) Calculating the battery capacity (considering the SOC lower limit)

The battery capacity calculation formula in the battery and the wireless charging type monorail system is expressed by Equation (7) below.

The wireless charging system of the present invention will be described below with reference to FIG. 3 attached hereto. The system configuration of the power supply system of the wireless charging system is shown in Table 4 below.

Item Configuration
Remarks


Feeding system


a. Feeder line
Power (current magnetic field) b. Feeding inverter
Resonant frequency setting c. Ferrite core
Magnetic field shaping d. Transformer for insulation
Separation from power system

Collector system
e. pick up Winding Induced voltage generation
Ferrite core f. regulator Voltage control g. rectifier AD-DC

3 is a diagram showing a configuration of a wireless power transmission system according to the present invention.

As shown in the figure, the power supply system of the present invention comprises a feed inverter 50 for generating a high-frequency current and performing high-efficiency resonance control, a high-frequency current generator 50 disposed in the ferrite feed core, And a feed rail 60 for transmitting the magnetic field generated by the magnetic field to the current collecting system. In the case of the present invention, this power supply system is installed in a monorail that guides the running of the vehicle by a single line.

The current collecting system includes a current collecting device 70 composed of a ferrite core and a winding wound around the ferrite core to generate an induction voltage by being supplied with power wirelessly from the power feeding system and a regulator 70 for controlling an induced voltage generated in the current collecting device 70 And a rectifier (not shown) for converting the AC power of the induced voltage controlled by the regulator 80 and the regulator 80 into DC power to charge the battery.

4 is a view showing an example of a vehicle driving method in the environmentally friendly electric monorail driving system of the present invention.

As shown in the figure, the section D is a section where the capacity of the battery is 100% buffered for 3 to 5 minutes at the time of stopping the vehicle.

E section is designed to be used only within 60% of the total capacity as the discharge interval of the battery. When the amount of discharge is large and the capacity is insufficient, a wireless rapid charging device is installed so that the vehicle can be charged while traveling.

F and G sections are regenerative braking sections. From the destination, they are downward sections. Instead of using the battery capacity, the battery is charged by the power regeneration device.

That is, when the vehicle comes down from the normal destination, the battery is charged using the power regeneration device, and the insufficient capacity of the vehicle battery returned to the starting point is rapidly charged by the rapid charging facility, % The calculation formula is calculated when designing to maintain the cushioning state.

When the length of the rail is less than 2 km, rapid charging facilities capable of rapid charging by radio can be installed only at the departure point and at the wake-up and landing area in the vehicle traveling section running on the monorail. If the length of the rail is more than 2 km, the rapid charging equipment is additionally installed at the starting point, the wake-up area and the uphill area, so that the required capacity of the battery can be calculated while the vehicle is running.

That is, the present invention relates to a monorail system at a mountainous slope rather than a general road system, and assumes that a 100% charged vehicle at the origin of the vehicle consumes a maximum of 60% % With regenerative power, and the remaining capacity is 100% charged when waiting for 3 ~ 5 minutes from the departure point, so that 100% capacity can be maintained for every re-operation.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

10: Monorail
20: Battery
30: Motor

Claims (2)

As a wireless rechargeable monorail system,
A power feeding device installed at a bus depot;
A current collecting device installed at a lower portion of the vehicle and receiving power wirelessly to generate an induced voltage;
A regulator for controlling an induced voltage generated in the current collector;
A rectifier for converting an AC power of an induced voltage controlled by the regulator into a DC power;
A motor for generating regenerative energy by regenerative braking of the vehicle traveling on the monorail; And
A battery that is charged by the DC power converted by the rectifier or the regenerative energy generated by the regenerative braking of the motor
/ RTI >
The capacity of the battery is increased up to 60% while climbing up the uphill section, 30-40% of the capacity consumed in the downhill section is charged with the regenerative energy, and when waiting for 3-5 minutes in the landing depot, Wherein the power is determined by the capacity to be fully charged by power supplied wirelessly to the power collecting device. The method according to claim 1,
And a power supply device installed in an uphill section for supplying electric power to the current collector wirelessly while the vehicle is in operation, when the capacity of the battery is insufficient for operating the predetermined section
Lt; RTI ID = 0.0 > monaural < / RTI > system.

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