Pulse power supply is a kind of power supply which can generate high voltage and short duration pulse current. It uses the principle of capacitors or supercapacitors and transformers to generate high-voltage pulsed current. During the charging phase of the power supply, a capacitor or supercapacitor is charged with a low voltage current.
When the charging reaches a certain level, the capacitor or supercapacitor is connected to the transformer through a switch, thereby generating a high-voltage pulse current. Pulse power supply usually has a variety of control methods, such as pulse width, pulse frequency, pulse voltage and other parameters to meet the needs of different application fields. Next, Shenzhen Kairui Energy Xiaobian will introduce the working principle and function of pulse power technology.
First, the basic working principle of pulse power technology
In the pulse electroplating process, when the current is switched on, the pulse (peak) current is equivalent to several times or even tens of times of the ordinary DC current, and it is this instantaneous high current density that the metal ions are reduced at extremely high overpotential, thus thinning the sediment grains.
When the current is turned off, the discharge ions near the cathode region return to the initial concentration, and the concentration polarization is eliminated, which is conducive to continuing to use high pulse (peak) current density during the next pulse period, and at the same time, there are also favorable phenomena such as recrystallization, absorption and desorption during the shutdown period.
Such a process synchronously runs through the entire plating process from beginning to end, which contains the mechanism constitutes the most basic principle of pulse plating. The practice has proved that pulse power supply has incomparable advantages over traditional DC electroplating in refining crystallization, improving physical and chemical properties of coating and saving precious metals.
Second, the pulse power supply has an important role in many application fields
1, provide the voltage, current, power and waveform shape required by high-speed switching devices. Fast and accurate energy transfer is achieved by precise driving of high-speed switching elements, thus ensuring reliable operation of high-performance electronic systems;
2, in the electrical transmission process to reduce loss and interference. At the same time, the pulse power supply can effectively control the load current, voltage and power to meet the requirements of high energy efficiency and high reliability in specific applications.
3, in the field of electroplating, the output of the pulse power supply is used to refine the metal coating, improve the physical and chemical properties of the coating, and save precious metals. For example, by slowly storing energy, the pulsed power supply is able to provide sufficient energy and take advantage of phenomena such as recrystallization, adsorption, desorption, etc. that favor the sedimentary layer during the shutdown.
In practical applications, the pulse power supply also has the functions of increasing pulse repetition rate, increasing power efficiency, reducing power consumption, and improving the reliability of the power supply system. Therefore, pulse power supplies are widely used in a variety of applications requiring precise energy control, such as power electronics, material handling and electroplating.
