MPPT with pwm advantages and disadvantages
Jan 25,2023 | Daxtromn power
Maximum Power Point Tracking (MPPT) and Pulse Width Modulation (PWM) are two of the most popular techniques used to charge batteries using solar energy. MPPT is a more advanced charging technique that can, in some cases, increase charging efficiency by as much as 30%.
First, let’s look at PWM charging. This method involves using a pulse width modulated signal to control the current applied to the solar array. The signal is typically generated using a specialized controller and can be designed to produce very specific pulses. PWM charging is often chosen for its simplicity, cost effectiveness and reliability. However, PWM charging does have some drawbacks, such as less efficient charging and a greater voltage drop across the load.
MPPT charging is a more advanced charging technique that uses an algorithm to constantly read and measure the input and output power at the solar panel, and then adjusts the charging current accordingly. This adds a level of sophistication to the charging process, as it is able to recognize and operate at the “maximum power point” of the solar panel, thereby maximizing the amount of power received from the solar panel. This is especially beneficial when dealing with non-ideal conditions, such as cloudy days or when using panels with different characteristics.
MPPT charging also offers some significant advantages over PWM charging. For example, it can increase charging efficiency by as much as 30%, which can lead to shorter charging times and lower electricity bills. MPPT charging is also better at recognizing and operating at the maximum power point of the solar array, and offers more flexibility in terms of overall system design.
When it comes to deciding between MPPT and PWM charging for your solar system, there are a few factors to consider. If you’re looking for a simple and cost-effective solution, and don’t need the added efficiency of MPPT charging, then PWM is probably the right choice. On the other hand, if you’re looking for maximum efficiency and flexibility then MPPT charging may be the better option. Ultimately, the choice between MPPT and PWM charging should be based on your specific needs and requirements.