Photovoltaic inverter having emergency stop function and emergency stop method for photovoltaic inverter

A photovoltaic inverter and emergency stop switch technology, applied in the field of emergency stop, can solve problems such as hidden dangers to the safety of on-site operators and maintenance personnel, secondary faults of photovoltaic inverters, and the inability to accurately judge the emergency stop function, etc., to avoid The effect of electric shock hazard, ensuring reliable and safe work, and increasing reliability

Active Publication Date: 2017-03-22
BEIJING ETECHWIN ELECTRIC
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, such an emergency stop function only disconnects the contactor in the AC circuit, which still poses a hidden danger to the safety of on-site operators and maintenance personnel. At the same time, the on-site operators and maintenance personnel cannot accurately determine whether the emergency stop function

Method used

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  • Photovoltaic inverter having emergency stop function and emergency stop method for photovoltaic inverter
  • Photovoltaic inverter having emergency stop function and emergency stop method for photovoltaic inverter
  • Photovoltaic inverter having emergency stop function and emergency stop method for photovoltaic inverter

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Embodiment Construction

[0029] The present invention may have various modifications and various embodiments, and it should be understood that the present invention is not limited to these embodiments, but includes all modifications, equivalents and replacements within the spirit and scope of the present invention.

[0030] In the present invention, expressions including ordinal numbers such as "first" and "second" can modify various elements. However, these elements are not limited by such expressions. A first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.

[0031] The terms used in the example embodiments of the present invention are for describing specific embodiments only, and are not intended to limit the example embodiments. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly dictates otherwise....

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Abstract

The invention provides a photovoltaic inverter having an emergency stop function and an emergency stop method for a photovoltaic inverter. The photovoltaic inverter comprises at least an inversion unit and an emergency stop switch, wherein each inversion unit comprises a DC input module, a DC circuit breaker, a power conversion module, a contactor module, an AC circuit breaker and an AC output module which are sequentially connected, the emergency stop switch is used for controlling power supply of a coil of a main contactor in a contactor module of each inversion unit and controlling operation states of the DC circuit breaker and the AC circuit breaker of each inversion unit and is triggered in response, and the emergency stop cuts off the power supply of the coil of the main contactor and controls the DC circuit breaker and the AC circuit breaker to be changed to a breaking state from a conduction state. By the photovoltaic inverter, the power supply of the coil of the main contactor can be cut off, the AC/DC circuit breaker can be cut off, the discharging of a support capacitor is accelerated, and emergency stop voltage state feedback information can be provided.

Description

technical field [0001] The following description relates to the field of photovoltaic power generation, specifically, a photovoltaic inverter with an emergency stop function, and an emergency stop method for the photovoltaic inverter. Background technique [0002] Photovoltaic power generation is a technology that directly converts solar energy into electrical energy. It has the advantages of safety, reliability, no noise, low pollution, no need to consume fuel, and a short construction period. Grid-connected photovoltaic power generation is to convert the DC power generated by solar modules into power-frequency AC power through a photovoltaic grid-connected inverter (photovoltaic inverter) and then directly connect it to the public grid. [0003] Photovoltaic inverters have high voltages that are fatal to the human body during work. Therefore, in case of abnormalities or emergencies in the photovoltaic inverter, the photovoltaic inverter has an emergency stop (emergency sto...

Claims

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Application Information

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IPC IPC(8): H02M1/36H02M7/48H02M1/32H02J3/38
CPCH02J3/383H02M1/32H02M1/36H02M7/48H02M1/322Y02E10/56
Inventor 李俊峰赵帅央刘炳
Owner BEIJING ETECHWIN ELECTRIC
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