The Role of Commutators in Electrical Engineering

by Yuvi K - December 17, 2023

What is a Commutator in Electrical Engineering?

A commutator is a device used in electrical engineering to switch the direction of an alternating current. In simple terms, it is a rotating switch which reverses the polarity of a DC current when rotated. It is the most important part of a dynamo, often found in electric motors, which is an electromechanical device that converts mechanical energy into electrical energy. (विद्युत अभियांत्रिकी में कम्युटेटर एक यूज़िंग डिवाइस है जो एल्टर्नेटिंग क्रियाली वर्गीकरण की दिशा को स्विच करने के लिए उपयोग किया जाता है। साधारण शब्दों में, यह एक घुमावदार स्विच है जो डीसी विद्युत के पॉलेटी तबाव को घूमने पर बदल देता है। यह एक डायनॉ मेंसी, जो आकाशीय ऊर्जा को तकनीकी ऊर्जा में रूपांतरित करती है, के सबसे महत्वपूर्ण हिस्से में से एक है।)

The Role of Commutators in Electrical Engineering

Commutators are used in many electrical engineering applications. In electric motors, for example, they are used to supply the current to the armature. This current is used to produce a rotating magnetic field which interacts with the stator’s field to create torque and drive the motor. Furthermore, commutators are also used to regulate the speed of DC motors, by controlling the current delivered to the armature.

Commutators are also used in some electrical generators, known as generator commutators. The purpose of these commutators is to convert the mechanical energy of a rotating shaft into electrical current. They are also used to convert AC current into DC current, by rectifying the current.

Commutators are also important components of a DC Contactor, a type of electric switch used to control large electrical currents. They are used to control the current and voltage levels by switching the current on and off. This allows the contactor to be used as a switch, enabling the user to start and stop the flow of electrical current.

Commutators are also used in the construction of copper brushes for the electric motors. This is due to their ability to transfer current with low resistance. They are also used as contact elements in electronic relays, where they are used to switch the AC voltage. This is important in electrical circuits, as AC voltage needs to be switched on and off to ensure that the circuit does not malfunction. (विद्युत अभियांत्रिकी के में कम्युटेटर्स का भूमिका बहुत उपयोगों में उपयोग किया जाता है। उदाहरण के लिए, इलेक्ट्रिक मोटरों में उन्हें आर्मेटर को विद्युत प्रदान करने के लिए उपयोग किया जाता है। इसके अतिरिक्त, डीसी मोटरों की गति को नियंत्रित करने के लिए भी कम्युटेटर्स का उपयोग किया जाता है।)

Advantages of Commutators

Commutators have several advantages in electrical engineering applications. Firstly, they enable motors to operate in different directions, as the current can be reversed depending on the direction of the armature. Secondly, they enable the speed of DC motors to be regulated, allowing the user to control the current supplied to the motor. The commutator also ensures that the current delivered to the motor is continuous, as opposed to an AC current which is switched on and off.

Finally, commutators have low internal resistance, thus allowing them to effectively transfer electrical current. This makes them ideal for use as contact elements in electronic relays, and also in the construction of copper brushes for motors. (कम्युटेटर्स में विद्युत अभियान्त्रिकी उपयोगों में कई फायदे हैं। पहले तो, वे मोटरों को विभिन्न दिशाओं में आचार्य के दिशा के अनुसार विद्युत रोका जा सकता है। दूसरा, डीसी मोटरों की गति को नियंत्रित करने के लिए भी कम्युटेटर्स का उपयोग किया जाता है, जिससे उपयोगकर्ता मोटर क