Timeline of the electric motor

Long ago, people found a way to make things move. They used power from a battery. First, a scientist saw a compass needle move. This showed that power and magnets work together.

One man made a wheel that used this power. Later, another man made a motor for a boat. It could help a boat move through water.

Some inventors made motors for trains. Other people made motors for tools. These machines help us do many jobs.

Today, many motors are still like the old ones. They use magnets to turn wheels. They are very useful tools.

Electric motors turn power into motion. This began in the early 1800s. First, Hans Christian Ørsted saw a compass needle move near a battery. This showed that electricity and magnets work together. In 1822, Peter Barlow made Barlow's wheel. It was the first device powered by magnetism.

Later, Ányos Jedlik made a big change. He invented the commutator. This is a part that helps a motor turn. He also used a stator and a rotor. The stator stays still. The rotor is the part that spins.

In 1834, Moritz von Jacobi built a 15 watt motor. He used it to move a boat. This was a very useful motor. Later, Nikola Tesla made new types of motors. He made a motor that could start on its own. This is called an induction motor.

In 1889, Mikhail Dolivo-Dobrovolsky made a three-phase motor. This type of motor is still used today. Some motors even move in a straight line. These are called linear induction motors. They can drive trains or lifts.

Electric motors are amazing machines. They turn electrical energy into motion. This change makes many tools work. Many scientists worked to understand this. It all began with a link between electricity and magnets. In 1820, Hans Christian Ørsted saw a compass needle move near a battery. This showed that electricity and magnetism are related. This discovery was the first big step. Without this link, motors would not exist.

How does a motor actually work? Most motors use three main parts. First is the stator, which stays still. Second is the rotor, which is the part that spins. Third is the commutator, which helps the movement stay steady. Ányos Jedlik showed these parts working together in 1828. He was the first to use a commutator in a machine. This part helps the motor keep turning in one direction. It makes the energy flow correctly.

History shows many inventors helped build these machines. In 1822, Peter Barlow made the first device powered by electromagnetism. This was called Barlow's wheel. Later, Moritz von Jacobi built a 15 watt motor in 1834. He used it to move a boat. This was the first real useful rotary motor. In 1837, Thomas and Emily Davenport got the first US patent for a motor. These people turned small ideas into real tools.

As time passed, motors became much better. In 1860, Antonio Pacinotti made a practical DC machine. This gave a steady flow of power. Later, Zénobe Gramme made an anchor ring motor in 1871. This helped send power between a generator and a motor 1 km apart. Nikola Tesla later presented new types of motors in 1888. He made a motor that could start on its own. This was a huge leap for technology.

Today, we see these inventions everywhere. Some motors do not spin in a circle. Instead, they move in a straight line. These are called linear induction motors. Alfred Zehden described them for trains in 1905. Eric Laithwaite built a full-size model later on. You might see these motors in lifts or fast trains. They all trace back to those first experiments in the 1800s.

An electric motor is a machine that converts electrical energy into mechanical motion. This conversion allows electricity to perform physical work, such as spinning a wheel or moving a part. The history of the motor is a long journey of discovery. It began with the realization that electricity and magnetism are closely linked. This relationship is the foundation of all modern electric propulsion. Without this connection, we could not use power to drive our machines.

To understand how a motor works, we must look at its core components. Most practical direct-current (DC) motors rely on three main parts. The first is the stator, which is the part of the motor that remains stationary. The second is the rotor, which is the part that rotates or spins. The third is the commutator, which helps manage the electrical connections to keep the motion steady. In 1828, the physicist Ányos Jedlik demonstrated a device that contained all three of these essential parts. His work helped establish the basic blueprint for practical DC motors.

There are several different types of motors that use different electrical methods. Many early machines were DC motors, which use direct current to create motion. Later, inventors developed alternating current (AC) motors. These motors use currents that change direction periodically. Some motors are rotary, meaning they spin in a circle. Others are linear induction motors, which move in a straight line. For example, Alfred Zehden described a linear motor for trains in 1905. Eric Laithwaite later built a full-size working model of this type.

The path to the modern motor was paved by many scientists. In 1820, Hans Christian Ørsted noticed a compass needle move near a battery. This confirmed that electricity could influence magnetism. Shortly after, André-Marie Ampère invented the solenoid, which is a coil of wire that acts like a magnet. In 1821, Michael Faraday showed that continuous electromagnetic rotation could happen in an electric field. By 1822, Peter Barlow had invented Barlow's wheel. This was the very first device ever powered by electromagnetism.

As the 1800s progressed, engineers made motors more powerful and useful. In 1834, Moritz von Jacobi built a 15-watt motor. He used it to propel a boat, making it a very early example of a useful rotary motor. In 1837, Thomas and Emily Davenport obtained the first US patent for an electric motor. By 1860, Antonio Pacinotti developed a ring-armature dynamo. This machine produced a nearly continuous current rather than isolated pulses. This made it the first truly practical DC machine for industrial use.

Major breakthroughs occurred as scientists mastered the control of magnetic fields. In 1871, Zénobe Gramme developed the anchor ring motor. This design helped solve problems with pulsating current. He even demonstrated sending power between a generator and a motor 1 km apart. In 1885, Galileo Ferraris conceived of a continuous rotating magnetic field using phase-shifted AC. This idea was expanded upon by Nikola Tesla. In 1888, Tesla presented three different motor types to the AIEE. His designs included a self-starting induction motor and a true synchronous motor.

Today, the influence of these early inventors is seen in almost all technology. The work of Mikhail Dolivo-Dobrovolsky led to the three-phase induction motor. These motors are still widely used in industry today. Even the design of modern DC motors uses ideas from the 1800s. For instance, Auguste Pellerin introduced laminated magnetic cores in 1873. These cores use insulated steel sheets to reduce energy loss. From small household tools to massive industrial machines, the electric motor remains a vital part of our world.