All-electric propulsion is not a new concept.

In the past two or three decades, there have been many people who have tried and tested it repeatedly.

All-electric ships, commonly known as the integrated electric propulsion system of ships, refer to ships whose power system is dominated by electric transmission.

Up to now, all-electric propulsion has become the mainstream of naval development in developed countries. Among them, the DDG1000 destroyers and Burke Type 3 destroyers of a certain major country, the British Type 45 destroyers and the British Queen Elizabeth-class aircraft carriers, and the 25DD destroyers of Dongying all use this technology. Huaxia is also ready to catch up.

Compared to the old mechanical propulsion, all-electric propulsion does have many advantages. This is the trend of future ships.

And not just military ships. Even civilian ships will gradually adopt all-electric propulsion.

However, until today, all-electric propulsion technology has not been fully matured.

From time to time, there are still some drawbacks.

In other words, there are endless small problems and annoyance.

The DDG1000 destroyers of a certain large country are not yet in service because of various minor problems. It's still being improved.

The heart of all-electric propulsion is the ultra-high-power electric motor. Otherwise, the propeller cannot be pushed.

And the core of the core is the word "super power".

Extra-powerful generators.

Extra-high power electric motor.

Due to the very high power, there will be many minor problems.

High power and high current.

High power and high voltage.

Either way, it can have a huge impact on the entire circuit system.

The voltage of an ordinary household is 220 volts.

Ordinary industrial motors are 380 volts.

But when used on warships, this voltage is definitely not enough.

If the voltage is too low, there is not enough force to propel the heavy propeller to turn at high speed.

Especially when sailing at full speed, the output power of the electric motor is very large.

How many knots is full speed sailing?

At least 35 knots.

If it is for a special purpose, it may be more than 40 knots.

This is very demanding for the electric motor. Long-term high-load operation is definitely a severe test for the motor.

Motors of several thousand kilowatts, or even tens of thousands of kilowatts, are extremely demanding in all aspects.

The principle, everyone understands. But when you make it, it's just different.

There's a lot of tricks involved. The key is also the manufacturing process, the problem of raw materials.

Especially the issue of raw materials. If there is a slight flaw, the result is unimaginable.

Since the 80s, with the development of solid power components such as MOSFETs and IGBTs, high-power inverters have begun to be practical, and large international electromechanical enterprises such as ABB Group in Switzerland and Alstom Group in France have begun to introduce inverter motors into the field of ship propulsion (similar to household inverter air conditioners, which can efficiently adjust the output and reduce energy consumption).

ABB Group specializes in pod propulsion system, the motor is installed in the pod that can rotate freely at the bottom of the hull, which can greatly improve the maneuverability of the ship, and can even carry out difficult maneuvers such as in-situ steering, which is widely used in marine engineering ships, large drilling platforms and other fields. The world's largest electric propulsion vessel, the Ocean Oasis supertanker, is equipped with three 20 megawatt (20,000 K) ABB electric propulsion pods, enabling the 225,000-ton vessel to reach high speeds of 22.6 knots.

However, for a warship, a speed of 22.6 knots, is clearly not enough. At least 30 knots or more.

The maximum speed of modern destroyers and frigates is generally above 35 knots.

Alstom specializes in high-power propulsion motor technology in fixed propeller mode, and the Zumwalt-class destroyer of the United States uses Alstom's 36 MW (36,000 K) synchronous induction motors, while the British "Queen Elizabeth" uses two sets of Alstom's 40 MW (40,000 K) synchronous induction motors.

It can be seen that the power of the motor is very terrifying. It's tens of thousands of Ks at every turn.

In addition, the power variation range of the motor is also very large.

When cruising at low speeds, only a few hundred kilowatts of power output may be sufficient.

But when sailing at high speeds, the electric motor will burst out tens of thousands of K.

The gap between the two is likely to be more than a hundredfold.

This is definitely a great test for the power regulation of the motor!

"Are you in a hurry now?" Wang Bu'an asked.

"I'm not in a hurry. Pang Xihua was insincere.

"Actually, you really don't need to be in a hurry. ”

"Why?"

"The Panshi 600 is already very fuel-efficient. ”

"That's right. ”

Pang Xihua nodded.

One of the major advantages of all-electric propulsion is fuel savings.

Why are warships now so keen on all-electric propulsion?

The main thing is that the gas turbine, or the diesel engine, when sailing at low speed, the fuel consumption is too high. It's not cost-effective.

As a result, some warships adopt a combination of low-power diesel engines and high-power gas turbines. When sailing at low speeds, diesel engines are used as power. When traveling at high speeds, the gas turbine is turned on. This saves fuel. The problem is that this combination occupies too much space, and the layout distribution is also not ideal, which seriously affects the combat effectiveness.

However, the Panshi 600 engine does not need to consume fuel at all!

From a fuel-saving point of view, all-electric propulsion is not very necessary.

If the technology is mature, of course it can be used.

But now the technology is not yet mature!

Even a superpower has not been able to do it, we can imagine.

"The destroyers and frigates that are now being built are ready to use the Rock 600 as power. Pang Xihua said, "For the time being, you can do without all-electric propulsion. However, in the future, all-electric propulsion will be the mainstream after all! The layout of warships can be better arranged, which is conducive to improving defense capabilities. ”

"Give it another five years. Wang Buan said calmly, "Five years later, it should be about the same." ”

"Good. Five years is five years. If, in five years' time, the technology is not yet mature, then we will definitely bother you again. Hope you won't mind. ”

"I believe that in five years, we will definitely be able to come up with mature all-electric propulsion technology. ”

"Good. Accept your words. Thank you. ”

"Goodbye. ”

Pang Xihua said goodbye and left.

Suddenly, he turned back again.

"By the way, did anyone from the 406 Institute look for you?" he said thoughtfully.

"Nope. Wang Buan shook his head.

"They should come to you. Why didn't they come to you?"

"What are you looking for me to do?"

"Vertical take-off and landing!"

"Oh. ”

Wang Buan said he understood.

The main subject of the 406 Research Institute is carrier-based aircraft.

Vertical take-off and landing has always been a key research direction of carrier-based aircraft. Especially when the ejection technology has not yet matured.

The 125 Penglai engine does not have the function of vertical take-off and landing.

That is, the 406 Institute could not directly use the 125 engine as a model.

Huaxia's vertical take-off and landing technology is mainly the Yak-141 single-seat, single-engine supersonic vertical take-off and landing fighter from the polar bear.

It was the world's first supersonic vertical take-off and landing fighter. It was designed with the guiding ideology of a carrier-based interceptor aircraft and a sea (ground) attack aircraft, and at the same time made it a shore-based air defense aircraft, which has broken many world records for vertical take-off and landing fighters. Better than the British Harrier fighter performance.

And the vertical take-off and landing technology of the F-35 fighter of the United States is mainly from the British Harrier fighter. That is, the product of Rolls-Royce.

Obviously, Rolls-Royce's heritage is stronger than that of the Yak 141, and the opportunities are also a little better.

Harrier fighters were once mass-equipped and participated in the Falklands War.

The Yak 141, on the other hand, only had a prototype and was never installed. Because it was born at the wrong time, the Soviet Union collapsed.

In terms of performance parameters, it is more advanced than the Harrier fighter.

However, the biggest problem with polar bears is the reliability and stability of the engine, and then there is the problem of longevity.

They have never paid much attention to the issue of longevity. I think it's pretty much it. Anyway, when there is a war, the survival time of an engine may be dozens of hours. It's a waste to design an engine that's tens of thousands of hours. The thinking of a fighting nation is difficult for others to understand.

"What do you mean?" asked Wang Bu'an knowingly.

"When you have time, look into VTOL. Pang Xihua said.

"Sorry, I don't have time for the time being. ”

"You have it. ”

Pang Xihua pinned his hopes on Wang Buan.

After all, the performance of the 125 Penglai engine is really outstanding. It simply caused a sensation in the entire aviation community.

Although Huaxia is very tightly sealed with relevant information, it is still detected by some major powers. They are currently trying to get their hands on the 125 manufacturing technology at all costs. Fortunately, Huaxia set up the barrier of the 220 Research Institute in advance. Fake a shot. Attracted the fire.

Otherwise, I am afraid that Wang Bu'an at this moment will already be a chicken flying and a dog jumping, and there will be no peace.

"I don't feel like it's necessary. Wang Buan shook his head and said.

"Why?" Pang Xihua frowned.

"125 can already guarantee the take-off of carrier-based aircraft within 50 meters. The advantages of VTOL are not outstanding. ”

"One more technical advantage, one more guarantee!"

"At the same time, it is more difficult to repair. ”

“……”

Pang Xihua wanted to speak and stopped.

Wang Buan's statement is not wrong.

No matter what kind of machinery and equipment it is, the most feared thing is complexity.

The more complex it is, the greater the chance of error.

The more complex it is, the more difficult it is to repair.

The 125 engine would have been very easy to maintain.

As long as there is no external damage caused by violence, it does not need to be disassembled and repaired at all.

Usually, it is just to wipe the dust and clean up the periphery.

If you want to force a vertical take-off and landing, it is tantamount to deliberately adding a lot of variables. Deliberately increase the chance of failure.

Wang Buan didn't want to waste this time and energy.

Anyway, there are already samples of the 125 Penglai engine.

Whoever wants to improve, do it yourself.

I, Wang Buan, will never continue to change. Unless you need more thrust.

Is a jet engine with more thrust needed?

It's ready to be released.