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Solar street lights are a topic worth contemplating; high luminous efficiency ensures the high performance of street lights. Therefore, the design configuration of LED light sources requires high external standards, but more importantly, it is essential to determine which scheme is suitable for normal street lighting.
Currently, the commonly used configurations are single 1W LEDs. Clearly, to create such a semiconductor light, 50 light-emitting diodes are needed. When all 50 LEDs are connected in series or parallel, there are some issues. If connected in series, if one LED fails, the entire light will not work. Moreover, all 50 LEDs in series would require a driving voltage of at least 150V, which reduces safety. If connected in parallel, a short circuit or open circuit can lead to uneven current distribution, affecting the lifespan of the lighting fixture.
From the perspective of driving technology and the characteristics of light-emitting diodes, a group of multiple LEDs should ideally use a series arrangement. This way, as long as the current provided by the driver is adequate, all light-emitting diodes will have the same current. A common concern with using LEDs in series is that if one LED opens, the entire string will not light. We have conducted high-voltage tests and surge experiments on prototype lights. From practical applications, as long as the driver does not fail and the current to the LEDs is appropriate, open circuits are rarely encountered. Even if an LED itself malfunctions, it generally only fails to light but maintains a connection, allowing others to shine. Additionally, light-emitting diodes have a strong capability to withstand overcurrent. For instance, a 1W LED can endure a brief surge of 600mA without damage. Therefore, when using light-emitting diodes, a series connection should be prioritized, as it allows for stable and consistent current which benefits the lifespan of the lights.
Due to the large number of LEDs, a fully series connection would require a high driving voltage, necessitating a combination of series and parallel connections. Specialized LED drivers are typically current sources. Since LED drivers provide a constant current, when using multiple series and parallel arrangements, external current balancing measures are essential to evenly distribute the total current supplied by the driver to each series. The simplest method is to add a resistor in series with each string to balance the current. When using multiple series and parallel connections, it is vital to ensure that the total voltage drop across the LED strings is kept as uniform as possible, and then add resistors to mitigate current deviation. Excessive voltage drop in the circuit increases power consumption, and insufficient drop results in poor current balancing. Generally, a voltage drop of about 5% across the series LED strings can be taken as a guideline.
To learn more about the solar street light price list, feel free to inquire about street lights.
Bitpott solar street lights are produced by a manufacturer specializing in the research, production, and sales of solar and LED outdoor lighting. With years of production experience and advanced equipment, we guarantee quality at reasonable prices and configuration. For inquiries about LED solar street lights and their prices, please reach out to our online customer service or call our service hotline.
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