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Solar Charge Controller

Longchi Technology is one of the leading China solar charge controller,solar panels charge controller,solar charge regulator,charge controller for solar panels manufacturers and suppliers, welcome to buy our discount and cheap solar charge controller or wholesale low price solar charge controller made in China from our factory.

A charge controller, charge regulator or battery regulator limits the speed at that current is adscititious to or drawn from electrical batteries.It prevents overcharging and should shield against overvoltage, which might cut back battery performance or life, and should create a security risk. it should conjointly stop fully debilitating ("deep discharging") battery, or perform controlled discharges, looking on the battery technology, to guard battery life. The terms "charge controller" or "charge regulator" could see either a complete device, or to regulate electronic equipment integrated inside battery pack, powered device, or device.

Stand-alone charge controllers

 

Charge controllers are sold to customers as separate devices, usually in conjunction with star or alternative energy generators, for uses like self-propelled vehicle, boat, and off-the-grid home battery storage systems.[1] In star applications, charge controllers may additionally be known as star regulators. Some charge controllers / star regulators have further options, like a coffee voltage disconnect (LVD), a separate circuit that powers down the load once the batteries become too discharged (some battery chemistries are specified over-discharge will ruin the battery).
A series charge controller or series regulator disables any current flow into batteries after they are full. A shunt charge controller or shunt regulator diverts excess electricity to AN auxiliary or "shunt" load, like an electrical warmer, once batteries are full.
Simple charge controllers stop charging battery after they exceed a collection high voltage level, and re-enable charging once battery voltage drops back below that level. Pulse breadth modulation (PWM) and most wall socket hunter (MPPT) technologies are a lot of electronically refined, adjusting charging rates looking on the battery's level, to permit charging nearer to its most capability.[citation needed]
A charge controller with MPPT capability frees the system designer from closely matching obtainable PV voltage to battery voltage. sizeable potency gains is achieved, notably once the PV array is found at far from the battery. By approach of example, a {150|one hundred fifty|a hundred ANd fifty} potential unit PV array connected to an MPPT charge controller is wont to charge a twenty four or forty eight volt battery. Higher array voltage means that lower array current, therefore the savings in wiring prices will over buy the controller.
Charge controllers may additionally monitor battery temperature to stop heating. Some charge controller systems conjointly show knowledge, transmit knowledge to remote displays, and knowledge work to trace electrical flow over time.

 

mppt solar charge controller

 

Maximum electric outlet trailing star Charge Controllers (MPPT) are completely different than the normal PWM solar charge controllers therein they're additional economical and in several cases more feature made. MPPT star charge controllers permit your solar panels to work at their optimum power output voltage, up their performance by the maximum amount as thirtieth. ancient star charge controllers scale back the potency of 1 a part of your system so as to create it work with another. browse our MPPT charge controller journal to find out additional concerning however you'll maximize your power output with MPPT star Charge Controllers!
Several MPPT star controllers will settle for high input voltages (up to 600 DC) from your solar panel and expeditiously down convert the DC voltage to it of your system (e.g. 12, 24, 48VDC, etc) which suggests you'ren't losing any generated power and you are ready to use what you generate additional expeditiously. to boot, employing a a lot of higher DC voltage on the input facet permits you to use dilutant wire, decreasing your wire price and creating installation easier.
We carry all of the most effective brands of MPPT charge controllers as well as wild blue yonder, Genasun, wine bottle Energy, Midnite star, Morningstar Corporation, Outback Power, Schneider electrical (Xantrex) and star Charge Converters. value ranges will run from simply over 100 bucks to over $1000 for larger units. though this could appear steep the come back on your investment can come back that way more quickly as your system performance are considerably improved.
Choosing a well created charge controller is integral to the long life and potency of your entire solar energy system. By optimizing the facility returning in from your star panels, you'll get that a lot of nearer to counteractive your use of ancient on grid power sources and by protective your battery provide you defend yourself from any unwanted and uncalled-for replacement prices. Your star charge controller is Associate in Nursing item well price investment in and researching as your customise your electrical device electrical system.
Make sure you select Associate in Nursing possibility that's climbable and applicable for your power load and ensure that you simply have sufficient battery cupboard space for the star panels you've chosen to put in. Use our learning resources to construct the correct solar energy electrical system for your home or alternate location. We'll advise you on everything from optimizing your current power load to however best to put in your star panels and on selecting the correct solar charge controller!

 

pwm solar charge controller

 

What follows may be a outline of our report with the identical title.
For the total report, see: that star charge controller: PWM or MPPT? within the White papers section of our web site.
1. What they are doing
The PWM controller is in essence a switch that connects a solar panel to electric battery. The result's that the voltage of the array are going to be force all the way down to close to that of the battery.
The MPPT controller is a lot of subtle (and more expensive): it'll change its input voltage to reap the most power from the solar panel and so remodel this power to provide the varied voltage demand, of the battery and load. Thus, it primarily decouples the array and battery voltages in order that there will be, for instance, a twelve potential unit battery on one facet of the MPPT charge controller and an oversized variety of cells wired asynchronous to supply thirty six volts on the opposite.
2. The resultant twin strengths of associate degree MPPT controller
a) most electric outlet following
The MPPT controller can harvest a lot of power from the solar panel. The performance advantage is substantial (10% to 40%) once the cell temperature is low (below 45°C), or terribly high (above 75°C), or once irradiance is incredibly low.
At warm temperature or low irradiance the output voltage of the array can drop dramatically. a lot of cells should then be connected asynchronous to form certain that the output voltage of the array exceeds battery voltage by a snug margin.
b) Lower cabling price and/or lower cabling losses
Ohm’s law tells North American nation that losses thanks to cable resistance are computer (Watt) = Rc x I2, wherever Rc is that the resistance of the cable. What this formula shows is that for a given cable loss, cable cross sectional space will be reduced by an element of 4 once doubling the array voltage.
In the case of a given nominal power, a lot of cells asynchronous can increase the output voltage and cut back the output current of the array (P = V x I, thus, if P doesn’t modification, then i need to decrease once V increases).
As array size will increase, linear unit can increase. the choice to wire a lot of panels asynchronous and thereby decrease the cable cross sectional space with a resultant call price, may be a compelling reason to put in associate degree MPPT controller as presently because the array power exceeds some hundred Watts (12 V battery), or many 100s of Watts (24 V or forty eight V battery).
3. Conclusion
PWM
The PWM charge controller may be a sensible low price resolution for little systems solely, once cell temperature is moderate to high (between 45°C and 75°C).
MPPT
To fully exploit the potential of the MPPT controller, the array voltage ought to be well above the battery voltage. The MPPT controller is that the resolution of selection for higher power systems (because of very cheap overall system price thanks to smaller cable cross sectional areas). The MPPT controller also will harvest well a lot of power once the cell temperature is low (below 45°C), or terribly high (above 75°C), or once irradiance is incredibly low.

 

how to use solar charge controller

 

BLOCKING REVERSE CURRENT
Solar panels work by pumping current through your battery in one direction. At night, the panels might pass a small amount of current within the reverse direction, inflicting a small discharge from the battery. (Our term "battery" represents either one battery or bank of batteries.) The potential loss is minor, however it's simple to stop. Some kinds of wind and hydro generators conjointly draw reverse current once they stop (most don't except underneath fault conditions).
In most controllers, charge current passes through a semiconductor (a transistor) that acts sort of a valve to manage the present. it's known as a "semiconductor" as a result of it passes current solely in one direction. It prevents reverse current with none additional effort or value.
In some older controllers, an magnetism coil opens and closes a mechanical switch (called a relay - you'll be able to hear it click on and off.) The relay switches off at midnight, to dam reverse current. These controllers are typically remarked as decision shunt controllers.
If you're employing a solar battery array solely to trickle-charge electric battery (a terribly little array relative to the dimensions of the battery), then you will not want a charge controller. this is often a rare application. associate example may be a little maintenance module that forestalls battery discharge in a very put vehicle however won't support vital masses. you'll be able to install a straightforward diode in this case, to dam reverse current. A diode used for this purpose is termed a "blocking diode."
PREVENTING OVERCHARGE
When electric battery reaches full charge, it will now not store incoming energy. If energy continues to be applied at the total rate, the battery voltage gets too high. Water separates into chemical element and element and bubbles out apace. (It appears like it's boiling thus we tend to typically decision it that, though it's not really hot.) there's excessive loss of water, and an opportunity that the gasses will ignite and cause atiny low explosion. The battery also will degrade apace and should presumably overheat. Excessive voltage can even stress your masses (lights, appliances, etc.) or cause your electrical converter to shut off.
Preventing overcharge is just a matter of reducing the flow of energy to the battery once the battery reaches a selected voltage. once the voltage drops because of lower sun intensity or a rise in electrical usage, the controller once more permits the utmost attainable charge. this is often known as "voltage regulation." it's the foremost essential operate of all charge controllers. The controller "looks at" the voltage, and regulates the battery charging in response.
Some controllers regulate the flow of energy to the battery by shift the present totally on or fully off. this is often known as "on/off management." Others scale back the present step by step. this is often known as "pulse dimension modulation" (PWM). each ways work well once set properly for your variety of battery.
A PWM star Charge Controllers holds the voltage additional constant. If it's two-stage regulation, it'll 1st hold the voltage to a secure most for the battery to achieve full charge. Then, it'll drop the voltage lower, to sustain a "finish" or "trickle" charge. Two-stage regulation is vital for a system which will expertise several days or weeks of excess energy (or very little use of energy). It maintains a full charge however minimizes water loss and stress.
The voltages at that the controller changes the charge rate are known as set points. once determinative the perfect set points, there's some compromise between charging quickly before the sun goes down, and gently overcharging the battery. The determination of set points depends on the anticipated patterns of usage, the kind of battery, and to some extent, the expertise and philosophy of the system designer or operator. Some controllers have adjustable set points, whereas others don't.
CONTROL SET POINTS VS. TEMPERATURE
The ideal voltage set points for charge management vary with a battery's temperature. Some controllers have a feature known as "temperature compensation." once the controller senses a coffee battery temperature, it'll raise the set points. Otherwise once the battery is cold, it'll scale back the charge early on. If your batteries are exposed to temperature swings bigger than concerning 30° F (17° C), compensation is crucial.
Some controllers have a temperature device inbuilt. Such a controller should be mounted in a very place wherever the temperature is near that of the batteries. higher controllers have an overseas temperature probe, on atiny low cable. The probe ought to be connected on to electric battery so as to report its temperature to the controller.
An alternative to automatic temperature compensation is to manually modify the set points (if possible) in line with the seasons. it should be spare to try to to this solely double a year, in spring and fall.
CONTROL SET POINTS VS. BATTERY kind
The ideal set points for charge dominant rely on the planning of the battery. The overwhelming majority of renewable energy systems use deep-cycle lead-acid batteries of either the flooded kind or the sealed type. Flooded batteries are crammed with liquid. These are the quality, economical deep cycle batteries.
Sealed batteries use saturated pads between the plates. they're conjointly known as "valve-regulated" or "absorbed glass mat," or just "maintenance-free." they have to be regulated to a rather lower voltage than flooded batteries or they'll dry out and be ruined. Some controllers have a way to pick the kind of battery. ne'er use a controller that's not meant for your variety of battery.

 

 

longchi is a professional supplier (manufacturer/wholesaler) of solar charge controller. the main products through the quality supervision report of the SGS,CE certification,ROHS report and obtain the relevant certificate. The quality is excellent and the price is excellent. It has been unanimously recognized and praised by the majority of buyers.

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