Maintenance Methods of Controller

1, When the electric car controller does not output

1) Set the multimeter in the +20 (DC) gear, measurement of the gate to the output signal high and low potential.
2) If the brake gate, the brake signal has more than 4V potential changes, you can rule out the brake failure.
3) Then according to the brush controller commonly used on the foot function table, and the measured master logic chip logic circuit voltage analysis, and check the chip peripheral devices (resistors, capacitors, diodes), check whether the value of components The surface of the identity consistent.
4) Finally check the external device or integrated circuit, you can replace the same type of device to troubleshoot.

2, When the electric vehicle controller is completely no output

1) With reference to the motor controller check the main phase measurement diagram, with a multimeter DC voltage +50 V file to detect whether the six-way MOS tube gate voltage and the handlebar rotation angle of the corresponding relationship.
2) If there is no, that the controller in the PWM circuit or MOS tube driver circuit is faulty.
3) With reference to the main phase check diagram of the controller, whether the voltage of the input and output pins of the chip has a corresponding relationship with the rotation angle of the switch can determine which chips are faulty and replace the same type chip to eliminate the fault.

3, When the electric car brush control device control power supply is not normal

1) electric vehicle controller internal power supply generally used three-terminal regulator IC, general 7805,7806,7812,7815 three-terminal voltage regulator integrated circuits, their output voltage is 5V, 6V, 12V, 15V.
2) Set the multimeter at DC voltage + 20V (DC), and place the multimeter black and red test pen against the black line and red line of the switch. Observe whether the multimeter reading corresponds to the nominal voltage, and their voltage difference Should not exceed 0.2V.
3) Otherwise, the controller internal power failure, the general brush controller can be replaced by three-terminal regulator IC troubleshooting.

4, When the electric car without controller phase

Controller power supply and brake failure can refer to the brush controller troubleshooting methods to exclude the controller, there are unique fault phenomena, such as lack of phase. Electric vehicle controller phase failure phenomenon can be divided into the main phase loss and hall phase two cases.
1) The main phase detection method can refer to the electric car brush controller speed fault diagnosis method to detect whether the MOS tube breakdown, controller MOS tube breakdown is generally a phase of a pair of upper and lower MOS tube While the breakdown, to ensure replacement at the same time replacement. Check the measuring points.
2) electric car controller hall lack phase performance for the controller can't recognize the motor hall signal.

Influence of Power Quality on Photovoltaic Inverter

With the increasing depletion of non-renewable energy and the large-scale PV system in the power system, the interaction between PV system and power grid becomes closer and closer.

On the one hand, because the PV power generation is controlled by the maximum power point tracking strategy, the output power is directly related to the solar irradiance and the ambient temperature, and the solar irradiance is not a stable value with time, weather and many other factors. Therefore, the output of photovoltaic power generation in the day also has a greater volatility. Large volatility will lead to the PV system voltage fluctuations, voltage flicker, frequency fluctuations and a series of power quality problems.

Among them, the photovoltaic power generation system through the power electronic devices to achieve power conversion and grid operation. In this process, the inverter high-frequency characteristics and non-linear characteristics will have more harmonic and DC components, affecting the user power quality. Damage to user equipment, resulting in economic losses.

On the other hand, the existence of harmonic and unbalanced negative sequence components in the power grid will lead to the output of photovoltaic power system active power and output current distortion will affect the normal operation of photovoltaic grid-connected inverter.

Influenced by various factors, the output power of photovoltaic power generation system is characterized by discontinuity and uncertainty, among which meteorological conditions are the most significant.

The influence of harmonic and unbalanced negative sequence components on the output power and output current of PV system. Under the condition of different voltage distortion rate of power grid shows the contradictory harmonic and unbalanced negative sequence components in the grid will lead to the fluctuation of the active power output of the PV system. The higher the grid voltage distortion rate is, the lower the active power output of the PV system will be. The higher the distortion rate of the grid voltage, the PV system output current THD is bigger.

Daily Maintenance of the Inverter

Inverter bring a lot of convenience to the owner. It is equivalent of a small car power supply. But the knowledge about inverter maintenance may be a lot of owners are not to understand.

If it does not work, you have to check whether the line has been connected. If can't be activated, you just connect the line re-connected just fine.

You will note that under normal circumstances the light will light, because the car inverter circuit generally has a power-on soft-start function, so after the power to wait 5s-30s after the exchange of 220V output while LED indicator light. when the LED light does not shine, it indicates that the inverter circuit is not working, just wait for some time.

When you turn on the power for more than 30s, you also find that the LED light is not lit, it is recommended that you go to a professional shop for repair, because it may be internal problems. There is a complex circuit, if you disassemble at random, the worst may make your car inverter can no longer use, it is recommended that you do not operation casually.

You also wait for a period of time, and also find that the LED indicator is not lit. You need to measure the AC output voltage at the AC output socket, if the voltage is about 220V normal, it is only part of the LED indicator of the circuit failure. If measured by the AC output socket AC voltage value is 0, then the cause of the failure of the inverter circuit does not work, the chip internal protection circuit has been started.

The method to judge internal protection circuit is: with a multimeter DC voltage block chip 3 feet to DC voltage value. If the voltage is 1V or more then the chip internal protection circuit has been activated, otherwise is the non-protective circuit action.

The Role of Solar Controller

The solar controller protects the voltage

Some customers have encountered solar street light for some time after a period of time is not bright phenomenon, and this phenomenon occurs in continuous rainy weather, by detecting the election of batteries, lights, controller no problem. What is the reason for this? This phenomenon is because the voltage out of under voltage protection there is a problem, to avoid the occurrence of this problem requires you to choose a good performance of the solar controller.

The solar controller can control the current output

In the use of solar lights, solar street lights LED lights due to their own characteristics, must be through the solar controller for its constant current or current limiting to normal use, but the common solar LED lights are added by a drive power to achieve the lamp of the constant current, this will take up a large proportion of the total power of the lamp, the emergence of solar controllers undoubtedly solve this problem.

The solar controller can control the output period

Imagine if your solar lights in the daytime in the lighting, is not a waste? Solar controller will be able to control its lighting period to ensure that no lighting during the day and night lights. This saves maintenance costs and costs.

The solar controller can assist in heat dissipation

Many manufacturers of solar street lights and other products in order to save costs, the choice of solar controller will ignore the heat, this is actually a very wrong behavior, if you ignore the heat, it is undoubtedly the load current and charge current withstand capacity of the load, which will reduce the charging efficiency.

Using a digital LED display and settings, one-click operation to complete all settings, the use of extremely convenient and intuitive role is to control the working status of the entire system, and the battery played overcharge protection, over discharge protection. In the larger temperature difference, the qualified controller should also have the function of temperature compensation.

How to Connect Solar Panels and Batteries?

How to connect solar panels and batteries to produce a stable voltage can provide power? Can be directly connected? Is it feasible to charge the battery with a solar panel while the battery is supplying power to the external circuit?

Solar cells and batteries connected, it is best to use a photovoltaic charging controller. This can control the output voltage of solar cells, and can protect the battery is not overcharged, but also at night when the solar cells do not generate electricity to prevent the battery of the electricity back.

The connection is as follows: Solar battery ---- photovoltaic controller --- battery --- DC load.

In this case, the load of electricity will be given priority to the direct use of solar cell power, the remaining charge to the battery. On the contrary, if the solar battery power is not enough, in the case of solar power to the battery is fully charged at the same time, will also take power from the battery.

Solar Energy: Solar Energy generally refers to the sun's radiation energy, in the modern general for power generation. Radiation energy released by the high-temperature fusion reaction inside the sun about two billionth of which reach the Earth's atmosphere, is the source of light and heat for the Earth. Earth-forming organisms live mainly on the heat and light provided by the sun. Know how to sun dried objects, but reduced in fossil fuels, only interested in the further development of solar energy. The use of solar energy has passive use (light and heat conversion) and photoelectric conversion in two ways. Solar power is a new kind of renewable energy. The broad sense of solar energy is the source of many power on earth, such as wind energy, chemical energy, water potential energy and so on. Solar energy is generated by the fusion of internal hydrogen atoms produce a huge nuclear energy generated by the energy from the sun's radiation.

The Mainly Function of Solar Controller

Self-test: When the controller is affected by natural factors or man-made operation is not the time. You can let the controller self-test. Let the person know whether the solar controller is intact. Reducing the number of unnecessary work hours. In order to win the project quality and duration to create the conditions. (D series of these products have this feature, see here on the "Modifier Manual")

Anti-anti-charge protection: to prevent the black days, or cloudy day without sunlight. The battery of electricity on the solar cell discharge (often said to be anti-charge). So as not to waste energy and damage the system.

Overcharge protection: When the battery is full to stop charging the battery, if too much charge will make the battery inside the chemical composition of other reactions, NI battery will crystallize, which directly affect the battery capacity and life.

Over-discharge protection: When the battery power is low to stop the battery discharge, if too deep discharge will also affect the battery capacity and life.

Recovery Interval: The recovery interval for overcharge or over-discharge protection. In order to avoid the line resistance or battery self-recovery characteristics caused by the work load of the fight.

Temperature compensation: monitor the battery temperature, the charge and discharge value into the very correction, so that the battery work in the ideal state.

Light control: more for automatic lighting, when the environment is bright enough. The controller will automatically turn off the load output; and dark environment will automatically open after the load. To achieve the function of automatic control.

How to Choose the Models of Hanfong Solar Charge Controller?

How to choose the right model on lots of solar controller models? In a general way, basically to consider the bigger one between the ratio of solar panels power and the battery voltage with the ratio of load power and the battery voltage. For example, the load power is 60w, panels is 100w, battery voltage is 12v, 60w/12v=5A, 100W/12V=8.333A.So, to choose 12v 10A solar controller is the best.

Of course, you also need other functions, that is going to tell your demand. You can choose the utility complementary controller when the battery without electricity but you have to stay in work. You can choose the controller taking half power  when you need the light in full power before 5 hours, but the half power later. You can choose double time frame controller when you need the controller working from the black to 0'clock, and at 4 am. to the morning. You can choose dual controller when you want the system has two load power.

If you can't make a decision, you can seek professional technical service solution on Hanfong. Postbox is: market@hanfong.net Welcome your letters.