Altenergy Power System, Inc.

Dongming Zhou

Yuhao Luo

Xuan Zhu

Fei Shen

Wenwei Li

Kaifeng Jin

Xiao Lu

Guowei Miao

A method and an apparatus for controlling a shutoff device, and a shutoff device. The method is applied to a processor of the shutoff device. The method includes: determining whether a heartbeat signal is received continuously during a first preset period; if so, controlling the N main switching transistors to be turned on, and determining whether the heartbeat signal is not received continuously during a second preset period; and if so, controlling the N main switching transistors to be turned off, and controlling the release circuit to be turned on to release a voltage on the bus. A release circuit is controlled to release voltage on the bus to the ground, thereby rapidly reducing the voltage on the bus, avoiding person danger and safety accidents caused by the long-term presence of the direct current high voltage on the bus, and improving the safety and reliability of a photovoltaic system.

Control method and apparatus for shut-off device and shut-off device

Provided is a detection apparatus for a photovoltaic component, including a detection device and a control device. An input terminal of the detection device is connected to an output terminal of the breaking device. The detection device is configured to detect, based on at least one of a voltage and a current outputted from the photovoltaic component, whether the photovoltaic component and a connection circuit for the photovoltaic component operate normally. The control device is connected with the breaking device and the detection device. The control device is configured to control to switch on the breaking device, to transmit the at least one of a voltage and a current outputted from the photovoltaic component to the detection device.

Detection device for photovoltaic assembly

A shutoff device, including a shutoff device control chip, where the shutoff device control chip includes a voltage output port, and a configuration module configured to adjust an output voltage of the voltage output port. Since the shutoff device control chip is provided in the shutoff device, and a voltage output port and a configuration module configured to adjust the output voltage of the voltage output port are provided in the shutoff device control chip, the shutoff device output can output different voltage values by configuring the configuration module. In this case, when a connection structure between the shutoff device and the photovoltaic module in the photovoltaic system changes, it is only necessary to reconfigure the configuration module to achieve the purpose of adjusting the output voltage of shutoff device.

Shutoff device and photovoltaic system

A method and a device for a current source to respond, and a computer-readable storage medium are provided. Parallel control for the current source and a voltage source is established, and a voltage across an alternating-current bus is acquired. When the voltage is lower than a first threshold, the current source outputs a current to increase the voltage across the alternating-current bus. Then, it is determined whether the voltage exceeds a second threshold. When the voltage exceeds the second threshold, the current source stops outputting the current. When the voltage does not exceed the second threshold, power is distributed between the current source and the voltage source after power synchronization. The current source directly outputs the current, and therefore unnecessarily wait for the power from the voltage source.

Current source response method and apparatus, and computer-readable storage medium

A module switchoff device and a security protection system of a photovoltaic power generation system. The module switchoff device comprises: a switch tube having a first end connected to a positive input end of the module switchoff device and a second end connected to a negative input end of the module switchoff device, the positive input end and the negative input end of the module switchoff device being connected to a photovoltaic module; a driving module connected to a control end of the switch tube; and a power supply module connected to the driving module and an output end of the module switchoff device, the output end of the module switchoff device being connected to a controller used for controlling the switch tube to be switched off when there is a need for the photovoltaic module to normally output a voltage and controlling the switch tube to be switched on when there is no need for the photovoltaic module to output a voltage, and the power supply module being used for converting a control signal of the controller.

Module switchoff device and security protection system of photovoltaic power generation system

The invention provides a solar photovoltaic three-phase micro-inverter system comprising a plurality of three-phase micro-inverters. Every three of the three-phase micro-inverters form a group and are coupled to a three-phase AC power grid. Each of the three-phase micro-inverters comprises 3 single-phase inverter circuits, each of the single-phase inverter circuits comprises 2 conversion circuits, and each of the conversion circuits corresponds to one phase of the three-phase AC power grid. AC outputs of the same conversion circuits of the three micro-inverters in one group are coupled to three-phase live wires of the three-phase AC power grid respectively. Accordingly, the invention provides a method for improving conversion efficiency of the solar photovoltaic three-phase micro-inverter system.

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Zhejiang, China

Dongming Zhou