What are the advantages and disadvantages of parallel DC regulated power supplies?
Shunt DC regulated power supply is one of the more common class of DC power supply, because it has certain advantages and disadvantages, in the actual engineering applications, need to be selected according to the actual needs. The following is a detailed discussion of the advantages and disadvantages of parallel DC regulated power supply.
Advantages of parallel DC regulated power supply:
1. High power output: parallel DC regulated power supply can greatly improve the power output of the power supply by connecting multiple power supplies in parallel. This method can meet the needs of high-power circuits and equipment.
2. Stable power output: parallel DC regulated power supply using multiple power supply output in parallel, by adding a feedback control circuit in the circuit, it can realize the stable control of the power supply output voltage, ensure the stability and reliability of the output voltage, so as to ensure the normal operation of the equipment.
3. High reliability: the parallel DC power supply uses multiple power supplies in parallel, even if one of the power supply failure, the other power supply can continue to work, thus ensuring the normal and stable operation of the equipment, and improve the reliability of the power supply system.
4. Low cost: Because the parallel DC regulated power supply is composed of several small power supplies, the cost is relatively low compared to a single high-power power supply.
5. Space-saving: Since the parallel DC regulated power supply is composed of several small-power power supplies, it is more effective relative to a single high-power power supply, and it can be expanded according to the demand, thus saving space.
6. Easy to repair and maintain: As parallel DC regulated power supply is composed of multiple small power supplies in parallel, once one of the power supply failure, only need to replace the power supply can be, relative to the maintenance of high-power power supply is also very convenient.
Disadvantages of parallel DC regulated power supply:
1. parallel on the stability of the power supply requires high: due to parallel DC regulated power supply in a number of power supplies in common parallel output, the power supply transistor occurs when a sudden sudden change in current, may have an impact on the circuit of the other power supply, resulting in power supply failure, so the quality of the power supply requires high, increasing the difficulty and cost of development.
2. Overload problem: Since the parallel DC regulated power supply consists of several small power supplies, when one of the power supplies is overloaded, it is easy to affect the normal work of other power supplies, and may even lead to the collapse of the whole power supply system. Therefore, it is necessary to ensure that the maximum output current of each small power supply is limited to a certain range.
3. Need to cooperate with the feedback circuit: In order to ensure the stability and reliability of the parallel DC regulated power supply, it is necessary to add a feedback control circuit in the circuit, which will increase the difficulty and cost of circuit development.
4. Relatively high cost: Although the cost of parallel DC regulated power supply is relatively low compared to a single high-power power supply, but if you want to ensure the quality, reliability and stability of the power supply, the cost is also very large.
In summary, although there are some shortcomings of parallel DC regulated power supply, but in the application of high-power engineering, its advantages can significantly improve the power output, to ensure the normal operation of the equipment and the stability of the system, has a wide range of application prospects.
