Power supply apparatus for light rail, using utility interactive photovoltaic generation
A technology of power supply device and photovoltaic power generation, applied in photovoltaic power generation, circuit device, AC network circuit, etc., can solve the problems of unstable electric power, low application efficiency, environmental pollution, etc., to reduce power consumption, cost, and pollution. Effect
Inactive Publication Date: 2012-12-19
DONGSAN ENG +1
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Problems solved by technology
[0008] The traditional electricity used for light rail operation is the electricity produced by the generator, which is supplied through multiple steps. In addition to the cost related to its generation and supply increase, there are many factors that cause environmental pollution.
[0009] In order to overcome these problems, solar cells have been used to generate electricity, but according to the actual environmental conditions, the power is unstable and there is a problem of low application efficiency
Method used
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[0052] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0053] figure 1 It is a schematic diagram of a light rail power supply device using grid-connected photovoltaic power generation according to the present invention. figure 2 It is a schematic diagram of a converter of a light rail power supply device using grid-connected photovoltaic power generation according to the present invention. image 3 It is a schematic diagram of another embodiment of the light rail power supply device utilizing grid-connected photovoltaic power generation according to the present invention. Figure 4 It is a schemati...
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The present invention relates to a power supply apparatus for light rail, using utility interactive photovoltaic generation. The a power supply apparatus for light rail comprises a power-converting apparatus which rectifies alternating current (AC) power, obtained by passing the voltage generated from a power-generating station through a substation, a circuit breaker, and a transformer, into direct current (DC) power; a converter which converts the voltage of the power from solar cells to be the same as the voltage of the power rectified by the power-converting apparatus; and a control board which controls the power-converting apparatus such that the control board compares the power supplied through the converter and the power required for operating a light rail system to check for electric power to be supplemented, and controls the duty ratio or firing angle of the power-converting apparatus so as to supplement the electric power.
Description
technical field [0001] The present invention relates to a power supply device, in particular to a light rail power supply device utilizing solar cells, which effectively utilizes the power generated from solar cells, reduces the power consumption of the grid, saves costs, and reduces environmental pollution. Background technique [0002] In general, direct current railways such as light rails operate using supplied electric power, and a plurality of substations are installed at regular intervals along the railway line in order to supply the electric power. [0003] The substation houses one or more banks of converters that convert alternating current to direct current. [0004] The converter receives alternating current (AC) power from the KEPCO substation, and the output side, namely direct current (DC) power, is connected to each electric car feeder cable through each circuit breaker. [0005] That is, multiple feeder cables equipped with pure power converters and high-sp...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60L9/18
CPCB60L2200/26Y04S10/126Y02E60/721B60L9/18Y02E10/563B60L9/04H02J3/383H02J2300/24H02J3/381Y02E10/56H02J2300/26
Inventor 金阳洙
Owner DONGSAN ENG