Sage-Tips

Which is better 2 pole or 4-pole generator?

A 2-pole generator is often used because this avoids the need for a gearbox, but in many cases a 4-pole generator with gearbox would have a lower investment cost and provide a better utilization factor. For systems running at 3600 rpm, 2-pole generators are the favored option because gearboxes are not needed.

Which type of alternator is used in thermal station?

plants is the salient pole type alternator. Turbo generators are basically turbines connected to electric generators to generate electricity and these turbo generators can also be used as auxilary power units.

What is a 2 pole alternator?

2 pole generators turn mechanical energy from turbines into alternating current electrical energy used by utilities and industries. 2-pole generators have a rotor that works like an electromagnet, with one north and one south pole. The stator coil is then connected to the generator terminals.

Which alternator is used in thermal power plant?

The speed of alternator used in thermal plants is 3000 rpm which means 2-pole alternators are used in such plants. In a hydel power station, water head is used to drive water turbine coupled to the generator.

What is the difference between 2 pole and 4 pole?

What is the difference between 2-Pole Motor and 4-Pole Motor? 2 pole motor has two poles (or a single pair of magnetic poles) while 4 pole motors have four magnetic poles in alternating order. 2 pole motors have twice the speed of a 4 pole motor.

How many RPM is a 2 pole motor?

3,600 rpm
A two-pole motor operates at 3,600 rpm (7,200 rpm ÷ 2) unloaded, and approximately 3,450 under load. Two-pole motors often are found in pump applications, such as sump pumps, swimming pool pumps, and water recirculating equipment.

What are the two types of alternators?

Automotive alternators – used in modern automobiles. Diesel-electric locomotive alternators – used in diesel-electric multiple units. Marine alternators – used in marine applications. Brushless alternators – used in electrical power generation plants as the main source of power.

What is the use of alternator?

The alternator supplies all of them with direct current (DC) power. Your alternator is also responsible for charging your car battery while driving. The alternator works by turning mechanical energy into electrical energy. When your engine is on, it powers a drive belt that rests on a pulley attached to the alternator.

What is 2 pole 4 pole and 6 pole motor?

On an induction motor, the number of poles determines the speed given the frequency of the power. For a 2 pole motor, at 60hz, it will spin 60 times a second, or 3600rpm. For a 4 pole motor, the speed is halved – 1800 rpm, 6 pole, 1200 rpm and so on.

What is alternator and types of alternator?

The five different types of alternators include: Automotive alternators – used in modern automobiles. Marine alternators – used in marine applications. Brushless alternators – used in electrical power generation plants as the main source of power. Radio alternators – used for low band radio frequency transmission.

What is the synchronous speed of two pole alternator?

That means synchronous speed of two pole alternators and motors is 3000 RPM for 50 Hz and 3600 RPM for 60 Hz devices. Four pole devices have synchronous speeds of 1500 RPM or 1800 RPM depending upon line frequency.

What is the difference between 2 pole and 4 pole generators?

In DC machines, two poles are generators having a northpole and a diametrically opposite south pole.4 pole machines have alternate north and south poles, each pole being 90 mechanically degrees from each other.

What is the use of alternator in power plant?

One of the primary uses of alternators is in the production of bulk ac power for commercial purposes. In thermal power plants, in hydel power plants, even in nuclear power plants, alternators only converts mechanical energy to electrical energy for supplying to the power system.

What are the different types of alternators?

Alternators can be also classified as : Based on output power 1. Single Phase 2. Three Phase Based on the working principle 1. Revolving armature type 2. Revolving field type Based on the speed on rotation 1. Turbo alternator 2. Low speed alternator Based on coiling 1. Air cooling 2.