Application of military power supply
General weapons and equipment must have a power supply where there are electronic equipment. This power supply is very different from the AC-DC converters and batteries that everyone imagines. Today's military electronic equipment has extremely high intelligence and environmental requirements. As the first element of equipment stability requirements, the power supply requirements have also increased. In the past, our communication radio power supplies were generally made of separate components (capacitors, inductors), which were poorly adaptable to the environment. Capacitors were prone to failure at high temperatures above 70 degrees. Although high-end military capacitors are now used, they still do. Limitations, but unfortunately, two or three years ago, the newly installed radio stations of the army began to use power module power supplies to make radio power supplies. There are no separate components, mainly chips (not CPUs). The volume and reliability are greatly reduced, and the volume is only three times the original. Less than one part, even if you turn on the power of a radio on the back of a communicator, you will find that the entire core component is less than one-third of the entire volume, and the size is about the same as the volume of two flat 555 cigarette cases. In terms of reliability, the shock resistance exceeds 7G, and the temperature range is between minus 40 and minus 100 degrees. This is an ordinary standard, if it is adapted to the extremely cold northeast area, there is a dedicated power supply.
Avionics power supply requirements are somewhat different. Generally, avionics use 27V voltage, which requires no over-protection function or automatic recovery. The volume requirements are very strict, so the old separation components are completely eliminated, and now 600W is used. Both the power supply and the 300W power supply are the size of a check folder. Think about the charger you use. Similar to your charger, it only has a few watts of power, and how big is it. Generally speaking, avionics will not require too much low-temperature performance and high-temperature performance, because the heating process on the ground, the temperature in the sky is generally not high, unless it is a special part, the most important thing is the volume and weight. This part of the power supply We can make them in our country, but...hehe, the biggest family makes things that are not very impressive, and they are twice the size of imports. This part of the power supply generally requires good low-voltage performance and can work at 8V.
Aerospace power supply, the above radio communication power supply and avionics power supply are mostly like a device box, the aerospace power supply is much smaller, how to put it, imagine your graphics card, many are as big, but the power is about 200~300 , It can withstand high temperatures above 100 degrees, and can be waterproof and automatically heated for distillation. There is a joke that it’s okay to throw it in boiling water, but of course it doesn’t seem to work that much. Even if the power supply is not broken, the equipment behind it is hard to tell. And the structure is extremely solid. If you stand it upright, it’s okay to let the full-back stand and jump on it. If you use your graphics card to jump around, the price is not to say, just take a small piece of it. The lowest price of 2W is still the lowest. of. It’s a pity that many of these key chips cannot be made at all. Only the United States has them, but the United States will never export them to us.
Last time God 5 went to heaven, I don’t know where the General Staff came from, or what kind of local methods our lovely aerospace workers did. Now the Pentagon in the United States is forcing all companies in the world that have used such power supplies. When writing an end-user report, the heads of one are big. I don’t know how many thousands of companies like this, and checking is a painful thing. The power requirements of aerospace are rather strange, because a lot of equipment is installed in a small place, 5V for intelligent processing, 12V for single-chip computers and circuit boards, 27V for wireless communication equipment, and 48 for braking, which are quite complicated. It is designed to be dizzy, and the detection methods are also very demanding. A power quality tester alone costs about 400,000 US dollars. Each power supply must pass that level first, and then perform environmental experiments and aging experiments. Yes, testing alone will take dozens of hours. Generally, one instrument can only test one power board at a time. Everyone can think about how the spaceflight money is spent, saying that we only spent 20 billion yuan this time on the sky. I think it is really low.
The power supply for the destroyer. I can't give this thing, let's talk about the DC power supply method of the destroyer. The internal combustion engine on the destroyer can generate electricity, but the quality of the power provided is very unstable, fluctuates, and interferes greatly, and it is not enough to power demanding equipment. The power supply requirements of multiple systems such as command, radar, communications, and weapons are inconsistent. , The voltage is different. Therefore, the centralized conversion of multi-channel power supply is adopted. To put it simply, multiple AC-DC power supplies are connected in parallel. After the power provided by the generator is converted, it is divided into multiple voltages to provide, and each voltage has multiple channels. Just like the power grid used at home, the DC power grid is distributed on the entire ship. Friends who have studied locomotives must know a little about this, but the complexity is not a level.
On each device, there will be its own DC-DC converted into its own voltage and at the same time play a role in isolation. But the power supply design on each system is done by the respective manufacturing unit, not the overall design. The AC-DC made by Russia’s original separation device was as big as a box, heavy, and low in power utilization. When the famous destroyers were delivered, they were demoted to death by our navy personnel. It's not easy to drag the sailors down to change when it's broken. Later, the whole ship did the power supply replacement. If you can replace it with your own thing, you can replace it with your own. I can't say the cost of the replacement. At least it is more expensive than the two J-8s. Regarding the size of the power, a reference data is provided, which is much higher than 500,000 watts. It can not be said to be specific, because the working ability of many modern electronic devices can be calculated through this.
