05
Therefore, assuming 100% efficiency:
Power In = Power Out
Volts In * Amps In = Volts out * Amps out
Although MPPT controllers are not 100% efficient, they are very close at about 92-95% efficient.
Therefore, when the user has a solar system whose Vmp is greater than the battery bank
voltage, then that potential difference is proportional to the current boost. The voltage generated
at the solar module needs to be stepped down to a rate that could charge the battery in a stable
fashion by which the amperage is boosted accordingly to the drop. It is entirely possible to have
a solar module generate 8 amps going into the charge controller and likewise have the charge
controller send 10 amps to the battery bank. This is the essence of the MPPT charge controllers
and their advantage over traditional charge controllers. In traditional charge controllers, that
stepped down voltage amount is wasted because the controller algorithm can only dissipate it
as heat. The following demonstrates a graphical point regarding the output of MPPT technology.
Temperature is a huge enemy of solar modules. As the environmental temperature
increases, the operating voltage (Vmp) is reduced and limits the power generation of the solar
module. Despite the effectiveness of MPPT technology, the charging algorithm will possibly
not have much to work with and therefore there is an inevitable decrease in performance.
In this scenario, it would be preferred to have modules with higher nominal voltage, so that
despite the drop in performance of the panel, the battery is still receiving a current boost
because of the proportional drop in module voltage.
Limiting Effectiveness
Maximum
Power Point
Traditional
Controller
Operating
Range
Maximum
Power Point
Current vs. Voltage (12V System)
Output Power(12V System)
Typical
Battery
Voltage Range
C
U
RRE
N
T
VOLTAGE
10
15 17
C
U
RRE
N
T
VOLTAGE
10
15 17
EN
Summary of Contents for Rover PG
Page 12: ...Remove Cover Battery 11 EN...
Page 13: ...Solar Panels Load optional 12 EN...
Page 18: ...Install the brackets using the provided components Using Mounting Brackets Step 1 EN...
Page 46: ...Decke entfernen Batterie 45 DE...
Page 47: ...Solarmodule Solarmodule 46 DE...
Page 70: ...69 ROVER MPPT ROVER 150 VDC Voc CN...
Page 71: ...70 AGM CN...
Page 72: ...71 LED Rover PG PV 72 76 76 77 78 87 95 97 98 98 99 99 99 100 100 101 102 CN...
Page 73: ...72 MPPT Rover PG LVD Rover PG V A 12V 24V 36V 48V MPPT 99 98 RS232 BT 1 DM 1 4G MPPT CN...
Page 74: ...73 100 MPPT 100 92 95 Vmp 8A 10A MPPT MPPT Vmp MPPT 12V 12V 10 15 17 10 15 17 CN...
Page 75: ...74 Rover PG MPPT 100 MPPT MPPT 2h A B C 3h 2h 10 180min CN...
Page 76: ...75 Rover PG Rover PG Rover PG Rover PG 28 Rover PG MPPT Rover PG CN...
Page 79: ...78 CN...
Page 80: ...79 CN...
Page 81: ...80 CN...
Page 82: ...81 CN...
Page 83: ...82 1 2 150mm 3 4 5 150mm 150mm CN...
Page 84: ...Rover 4 Step 1 Rover Step 2 CN 83...
Page 85: ...Step 3 CN 84...
Page 86: ...Step 1 CN 85...
Page 87: ...Step 2 Step 3 CN 86...
Page 88: ...87 Rover LCD 4 SOC ROVERPG 60 ROVERPG 60 CN...
Page 89: ...88 37 26 8V 11 6V 0W 0A OFF 0A CN...
Page 90: ...89 0 100 0 100 CN...
Page 96: ...95 Model ROVERPG 60 HW ver 00 02 07 SW ver 00 00 04 Serial 123456789 1 LED PV CN...
Page 97: ...96 LCD PV CN...
Page 98: ...97 Rover PG 150Vdc 150Vdc 1 05 65 85 PV 5 CN...