SOLAR ENERGY CONTROLLERS (SEC). MPPT
EFFECTIVE CONTROL OF SOLAR POWER
- Effciency – 98%
- Record current – up to 100 A
- Charge control allowing AB capacity be lower
- Power addition without AB using
- Solar panels voltage at the input – up to 200/250 V
- Fast MPPT algorithm
Solar charging controller is the important component of solar power station. It provides the correct operating of the rest of equipment, particularly the correct AB charging.
SEC uses MPPT technology. It allows the considerable increasing of produced energy, by 25–30% in comparison with charging controllers with PDM.
SEC controllers work with any solar panels. The use of current sensors CS 325 (optionally) allows the controller “to know” complementary external charging/discharging currents from inverter and/or wind generator. It allows automatic decrease of charging current, if it passes simultaneously from wind generator and solar panels and exceeds AB maximum allowable current.
The use of this sensor for charging/discharging currents from inverter also allows, as appropriate, instantly adding the required current to the inverter (for charging) from solar panels. It is possible even when AB are charged and the controller has come to low charging current (high current in the end of charging is inadmissible).
It can be also achieved by connecting the controller SEC and the inverter MAC using I2C bus and a special cable.
Two modi cations of solar controllers are produced – SEC PRO and SEC DOMINATOR.
TECHNICAL DETAILS OF SOLAR CONTROLLERS SEC PRO AND SEC DOMINATOR
| Name | SEC Pro 200/60 | SEC DOMINATOR 200/100 | SEC DOMINATOR 250/60 |
|---|---|---|---|
| Technique | MPPT | MPPT | MPPT |
| Maximal voltage from solar panels, V | 200 | 200 | 250 |
| Maximal operating voltage from solar panels, V | 185 | 185 | 230 |
| Max. current to AB (40°C) | 60 | 60 | 60 |
| Accumulators voltage, V | 12 / 24 / 36 / 48 / 96V automatic detection |
12 / 24 / 36 / 48 / 96V automatic detection |
12 / 24 / 36 / 48 / 96V automatic detection |
| Type of accumulators | AB: GEL, AGM, closed, open, alkaline, LiFePO |
AB: GEL, AGM, closed, open, alkaline, LiFePO |
AB: GEL, AGM, closed, open, alkaline, LiFePO |
| Temperature sensor | External | External | External |
| Temperature compensation (by default) | -3mV/° per 2V battery cell | -3mV/° per 2V battery cell | -3mV/° per 2V battery cell |
| Efficency with full load | 12V: 95% / 24V: 96,5% 36V: 97% / 48V: 98% |
12V: 95% / 24V: 96,5% 36V: 97% / 48V: 98% |
12V: 95% / 24V: 96,5% 36V: 97% / 48V: 98% |
| Energy consumption in the idle mode | 1,9 W | 1,9 W | 1,9 W |
| Programmable relay | 3 pieces DPST AC: 240М / 16А | 3 pieces DPST AC: 240М / 16А | 3 pieces DPST AC: 240М / 16А |
| Inputs for current sensors(sensors are not included) | 2 pieces | 2 pieces | 2 pieces |
| Presence of I2C bus | + | + | + |
| Switching ports RS-232 and USB | + | + | + |
| Body material, colour | Aluminum/steel | Aluminum/steel | Aluminum/steel |
| Protection class | IP40 | IP40 | IP40 |
| Installation | Vertical wall mounting | Vertical wall mounting | Vertical wall mounting |
| Terminals size | 35mm |
35mm |
35mm |
| Humidity (without condensate) | 95% | 95% | 95% |
| Cooling | Passive | Passive | Passive |
| Dimensions [HxDxW], cm | 22x12x19 | 35x12x21 | 35x12x21 |
| Mass, kg | 3.7 | 5.0 | 5.0 |
| Protection | Protections from overheating and power loss with high temperature. PV panels short circuit and PVP protection from reversed polarity. In addition, protection from AB reversed polarity. | ||
| Operating temperature | From -40 °C up to 60 °C. With the inside temperature above 65 °C the output current is gradually reducing. | ||