MPPT solar controller ET4415BND / ET6415BND

eTracer series controller is based on a multi-phase synchronous rectification high MPPT products for power level and below 3KW off-grid PV systems, improve efficiency and reduce costs. Based RS-232, RS-485 communication bus standard Modbus communication protocol, to maximize meet the communications needs of different occasions. Main features: · 12/24/36 / 48VDC system voltage automatic recognition or custom operating voltage · innovative maximum power point tracking, tracking efficiency of 99.7% - a multi-phase synchronous rectifier technology ensures peak conversion efficiency up to 98.7% * multi-phase power decentralized control technology enables the photovoltaic cells in low-power charging case also has a high conversion efficiency, improve the system of generating capacity and high-speed high-performance dual-processor architecture that improves system responsiveness, optimize the system Performance * multiphase control technology to optimize the charging current of smoothness, reduce ripple and improve system power efficiency * Has excellent thermal properties, with integrated full-cast aluminum heat sink casing, the controller can heat naturally cooling and simple man-machine interface, with 128 * 64 dot matrix LCD visual display data and status, more convenient combination key operation, Chinese and English interface options * based RS-232, RS-485 communication bus standard Modbus communication protocol, to maximize to meet the communication needs of different occasions · seal, colloids, opening ceremony and user-defined four types of battery charging procedure optional · current power calculation and real-time recording function has the power statistics, enabling users to view equipment daily, monthly, yearly and total rechargeable battery · with storage system performance data recording and random event recording function Support software upgrades to facilitate the after-sales maintenance protection functions: PV array PV array input is shorted input overvoltage protection · · · Solar PV array input overcurrent protection component polarity protection · battery overcharge protection · Battery over discharge protection * Battery reverse polarity protection · Over temperature protection MPPT technology eTracer-BND controller uses maximum power point tracking technology to obtain the maximum from the solar array power for battery charging. Maximum power point tracking mode is completely automatic and does not require user adjustment. When the array maximum power point with the environmental conditions change, eTracer-BND array controller automatically track the maximum power point, ensuring access to day maximum energy from the solar array. ? Improve under the current most cases, the maximum power point tracking technology to "improve" the solar power system charging current. For example, a system may have 8 Amps of current from the solar arrays flows into eTracer-BND controller with 10 amps of current from the controller to the battery eTracer-BND. eTracer-BND controller does not generate electricity! Enter eTracer-BND controller energy and energy output equal. Since the power voltage and current (amps × V) of the product, on the establishment of the following circumstances: (1) eTracer-BND controller input power = output energy eTracer-BND controller (2) Input voltage × output voltage × input current = Output current * Assuming 100% efficiency, ignored the wires and power loss during the conversion process. If the maximum power point voltage of the solar array (VMP) voltage is greater than the battery, battery charging current must be proportionally greater than the solar array output current, so in order to balance the input and output power. VMP voltage and the battery voltage difference between the larger, the greater the current enhancement. Current enhancements in the system is extremely important, because solar power system solar panel maximum power point voltage (VMP) is usually higher than the battery voltage. ? When compared to traditional controllers Superiority charge conventional controller directly to the solar array to the battery. This requires that the solar array is operating within the normal voltage range lower than VMP. In 12V systems, for example, the battery voltage range is usually 11 ~ 15 V, but the solar array open circuit voltage corresponding to the VMP voltage 23V is usually about 16 or 17V. VMP photovoltaic array of arrays as the temperature rises. In hot weather, VMP may be close to or even lower than the battery voltage. In this case, compared with the conventional controller, eTracer-BND controller little or hardly obtain energy. However, as long as the nominal voltage higher than PV system battery voltage, PV module VMP is always higher than the battery voltage. In addition, by reducing the current of the solar array, the wiring has been saved, allowing eTracer-BND controller even in the hot weather also has obvious advantages.