High-power DC power supplies are the mainstay of power supply products and are used in various fields. So today we will learn more about them.
1. What is a high-power DC power supply?
A high-power DC power supply is an electronic measuring instrument used to provide high-precision current or voltage output, and has an automatic constant current/constant voltage switching function [1]. Multiple series of products manufactured by Beijing Dahua Radio Instrument Co., Ltd. are widely used in testing in the new energy industry [2-3]. Its maximum output capacity can reach 20kA/15V, with an error of less than 1%. It adopts multi-module parallel technology to achieve precise output.
2. Technical Features
High-power DC power supplies adopt advanced topology principles and control technology, and have the following features:
Wide voltage and current coverage, powerful functions
High-precision output, voltage and current resolution can reach 0.1mV/0.1mA
Suitable for tasks that basic power supplies cannot complete
3. Application Areas of High-Power DC Power Supplies
High-power DC power supplies are used in many fields: aging, testing, inspection, experimental power supplies, high-power high-voltage power supplies, water treatment power supplies, metal ore refining, electrolysis, electric heating, electrophoresis power supplies, electroplating power supplies, ion polishing power supplies, deburring power supplies, etc.
Different applications mainly differ in the internal components used.
(1) High-power high-voltage power supplies, voltage is generally 300V-3000V, current 0-1000A, with requirements for ripple and accuracy. (2) Aging, testing, and inspection; experimental power supply: voltage generally 0-1500V, current 0-5000A; ripple accuracy is required. (3) Water treatment power supply: 0-48V, 0-20kA. Requirements are not high.
(4) Metal ore refining, electrolysis, and electric heating: 0-80V, 0-80kA. Requirements are not high.
(5) Oxidation power supply: 0-24V, 0-20kA. Requirements are not high.
(6) Electrophoresis power supply: 0-300V, 0-800A. Certain requirements exist (below the test level).
(7) Electroplating power supply: 0-18V, 0-100kA (hard chrome plating). Requirements are generally moderate.
(8) Plasma polishing power supply, deburring power supply: 0-400V, 0-1000A. Requirements are relatively high.
(9) Pulse power supply: 0-750V, 0-500A. Requirements are very high, and the price is also very high.
Electrical Discharge Machining (EDM) industry: This involves the removal of anodic electrodes using electrochemical machining. It is generally used for machining workpieces with high hardness. Combined with electrical discharge machining (EDM), efficiency is greatly improved. It is a relatively new machining process.
In the electropolishing and deburring industry, pulsed power supplies are used primarily because ordinary DC power supplies cannot polish or deburr workpieces in hard-to-reach areas. Using a single-pulse power supply allows for a concentration reduction process between the workpiece surface and the solution, eliminating concentration polarization and facilitating the polishing of hard-to-reach areas.
4. Let's look at some high-power power supplies.
4.1. 30000A/20V High-Power DC Regulated Power Supply
Applications: Electrolytic copper foil, non-ferrous metal electrolysis, ore electrolytic extraction, rare earth electrolysis, water electrolysis, municipal sewage treatment, electrochemistry, seawater desalination, electrolytic polishing, electric heating…
4.2. 600A/32V DC Regulated Power Supply for Automotive Electronics Aging Tests
Applications: Aging testing of automotive braking systems, automotive electronic products, new energy vehicle components, DC motor aging testing, inverter aging testing, school laboratory teaching and experimental equipment, testing equipment for testing units or research units, aging testing of various electrical and electronic products.
Product Description:
* The product has an attractive appearance, a robust and sturdy structure, and a powder-coated outer shell for durability and corrosion resistance.
* This power supply uses the world's most advanced control system PWM technology and a stable and reliable circuit topology design, equipped with imported German Infineon IGBT modules for control. The main transformer uses a nanocrystalline magnetic core and pure copper wire winding, resulting in excellent heat dissipation, sufficient power, low power consumption, long durability, and stable performance. Key components such as the rectifier bridge and rectifier diodes are made from high-quality materials sourced from around the world, and the power supply incorporates an advanced LC filter design. It features low output ripple coefficient, good current distribution, a wide output voltage and current range, high voltage and current stability accuracy, and precise data detection.
* Voltage/current regulation is switchable; voltage and current are continuously adjustable from 0 to maximum value. The output adjustment knob uses an imported multi-turn potentiometer for fine-tuning of voltage and current. It features automatic protection against phase loss, overheating, overvoltage, overcurrent, and short circuit faults.
* The internal control circuit board is completely sealed and strictly isolated from the environment to prevent acid mist or dust contamination and short circuits caused by insects, greatly improving product safety and lifespan.
* The product uses high-quality materials, provides ample power, and has significant design margins for electronic components and critical parts, ensuring full-load and long-term continuous operation.
4.3 3000A/25V DC Programmable Power Supply with Touchscreen for Hard Anodizing
Applications: Anodizing, hard anodizing, water treatment, non-ferrous metal electrolysis, rare earth smelting, etc.
Product Description: * Compact size, lightweight, aesthetically pleasing, rationally structured, powder-coated casing for durability and corrosion resistance.
* Utilizes internationally advanced pulse width modulation technology. Internal components use imported German Infineon modules (IGBTs), and rectifier diodes and other key components are made from high-quality imported materials. Product quality is guaranteed, performance is stable, efficiency is greater than 90%, power factor is above 93%, and energy saving is achieved.
* Intelligent computer touchscreen display interface, accurate display, simple operation, and multiple function and parameter settings are available. It has a programming storage function, allowing multiple sets of different voltage, current, delay time, and running time settings to be executed simultaneously, and can be continuously cycled 99,999 times. Four sets of memory parameters are easily recalled.
* Equipped with an RS 485 communication data interface, it can be configured with computer, host computer, and other software for control and monitoring. Multiple units can be networked and controlled in parallel.
*The electronic components and critical parts have a large design margin, ensuring that the product can maintain full load and long-term continuous operation in various environments.
Share our interesting knowledge and stories on social media
