High-frequency high-voltage power supply is a high-voltage switching power supply with a switching frequency of about 50kHz, an intermediate frequency of about 2kHz, and an operating frequency of 50/60Hz. Due to the high frequency, the transformer of high-frequency high-voltage power supply can be made very small.
Characteristics of high-frequency high-voltage power supply
The characteristics of high-frequency high-voltage power supply are small size, high precision, fast dynamic response, and high technical content. With the soaring prices of raw materials and technological development, high-frequency high-voltage power supply is becoming more and more advantageous in price.
Advantages
High-frequency power supply has high conversion efficiency
The conversion efficiency of the output power to input power ratio of a single-phase DC power supply is less than 70%, and the conversion efficiency of the output power to input power ratio of a three-phase high-frequency high-voltage DC power supply reaches 95%, which can increase the conversion efficiency by 25%, greatly reduce the load loss rate of power grid power supply, and is conducive to energy saving.
Input power supply balance
The input of the three-phase high-frequency DC power supply adopts three-phase power supply, and the current of each phase input is equal, the input power supply is balanced, and the input current is small; the single-phase high-voltage DC power supply adopts single-phase power supply, and the relative input current is large, and the balance of the three-phase power supply cannot be guaranteed. For example, taking a 800mA/72KV high-voltage power supply as an example:
The primary current of the three-phase is: 92A;
The primary current of the single-phase is: 248A;
Reduce the primary supply current: more than 50%.
High output DC average voltage
The voltage pulsation range of the single-phase power supply output is greater than 25%, with poor linearity, prone to impedance mismatch, and very easy to trigger spark discharge, resulting in low corona current, making it difficult to improve dust removal efficiency;
The voltage fluctuation of the three-phase high-frequency power supply output is less than 5%, and its DC average voltage is close to the peak voltage, with good linearity. The DC voltage applied to the electrostatic precipitator is much higher than that of the single-phase power supply, thereby improving dust removal efficiency.
High-voltage pulse power supply
The high-voltage pulse power supply is a high-voltage power supply that adds a switching circuit on the basis of the high-voltage DC power supply, so that the output pulse amplitude, pulse width, pulse frequency, and pulse output number can be set.
There are many types of high-voltage pulse power supplies. According to the implementation method of the high-voltage pulse power supply, it can be divided into mechanical switch type, high-voltage solid-state switch type, and Marx network (Marx generator). Among them, the high-voltage solid-state switch type and Marx network can achieve nanosecond narrow pulses and very high pulse frequencies.
High-voltage pulse power supplies can be widely used in air purification, discharge plasma sintering, high-voltage charging, high-voltage discharge, production of nanomaterials, treatment of dye wastewater and many other occasions.
In addition to pulse width and repetition frequency, the technical parameters of high-voltage pulse power supplies also include single discharge energy, which is a very important parameter in discharge occasions. For some special occasions, the leading and trailing edges of high-voltage pulse power supplies are required to be steep and reach the nanosecond level, which requires very advanced switching devices and effectively controlled energy storage circuits.
IDEALPLUSING sells various high-power power supplies and can also customize power supplies according to customer needs. At the same time, IDEALPLUSING's products also have the advantages of small size, simple use, multiple functions, complete varieties, perfect protection and flexible control.
