A centralized high power mppt off-grid photovoltaic controller

A photovoltaic controller, high-power technology, applied in the direction of photovoltaic modules, photovoltaic power generation, substation/switch layout details, etc., can solve the problems of slow battery charging, low conversion efficiency of photovoltaic controllers, large losses, etc., to achieve weight reduction, The effect of volume reduction and loss reduction
CN106452346BActive Publication Date: 2018-11-09合肥汇阳智科电气技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
合肥汇阳智科电气技术有限公司
Publication Date
2018-11-09

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Abstract

The invention discloses a centralized high-power MPPT off-grid photovoltaic controller, which characterized by comprising four sets of solar panel terminals S+ and terminals S-, and the solar panel terminals S+ are connected with the inverter through an anti-reverse diode module. The inverter is connected with one end of a DC circuit breaker and a driver respectively, and the other end of the DC circuit breaker is connected with an auxiliary power source through an emergency stop switch and a power source indicator lamp, and the auxiliary power supply provides a working power source for the controller and the DC high-speed fan respectively, and the controller is connected to the DC high-speed fan, the driver, the display screen and the matrix key, respectively. The centralized high-power MPPT off-grid photovoltaic controller adopts the four-phase staggered synchronous buck design based on the IGBT half-bridge module to reduce the size of the current in the conducting circuit so that the volume of the circuit is reduced, the weight is reduced, the switching power becomes larger, and the loss of the system is reduced. The battery charging speed is improved, while the battery life is prolonged.
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Description

technical field

[0001] The invention belongs to photovoltaic controllers, and relates to a centralized high-power MPPT off-grid photovoltaic controller. Background technique

[0002] With the increasingly serious energy crisis and environmental pollution in today's world, solar energy, as a new type of green renewable resource, has received more and more attention.

[0003] At present, the centralized high-power off-grid controllers on the market generally adopt the PWM control method, but the solar cell array is easily affected by the light intensity, ambient temperature, and load, which makes the output voltage and current constantly change. In order to make full use of solar energy and maximize the conversion efficiency of photovoltaic cells, measures must be taken to control the output power of photovoltaic cells to ensure that they work at the maximum power point, and at the same time increase the charging speed of the battery to ensure that the battery can work for a l...

Claims

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