Electric generators are devices that create an electrical current by moving a magnet near a wire. These generators come in many forms, from hand cranks to steam engines to nuclear fission. Each type of generator is used for different applications. Learn more about these devices and how they work! This article covers induction, electrostatic, and trailer-mounted generators.
Electrostatic generators
Electrostatic generators use a small electrical charge to create a powerful electric current. They are common in science museums and education. One popular demonstration uses a person’s hair, which is charged with a high voltage. The charge causes the hair to stand up. While most electrostatic generators use the triboelectric effect to create the electric charge, others are directly powered by electric currents.
Since the 18th century, electrostatic generators have been used for scientific experiments. In 1783, Dutch scientist Martin van Marum created a giant electrostatic machine. It used five-foot glass discs to produce electricity of either polarity. The power generated by this machine was 330,000 volts. Ultimately, this technology helped lead to the development of batteries.
Induction generators
Induction generators are extremely efficient and can be operated at speeds that are 2 to 5 percent higher than synchronous speeds. However, operating above the breakaway torque limits the amount of real power generated. In addition, the power factor of the generator decreases rapidly. Because of these factors, the design of an induction generator focuses on maximizing efficiency and minimizing power factor loss. The 3500 watt generator coils are also supported by additional felt and winding ties.
The maximum output power of an induction generator is limited by the rated current of the generator’s windings. Reactive power is supplied by a capacitor bank connected to the machine or by the grid. In a grid-connected system, the frequency and voltage are regulated by the grid, while stand-alone generators are more complicated and have less control over their parameters.
Trailer-mounted electric generators are portable power solutions that can provide electrical power to a variety of devices. They are often equipped with a diesel engine. These generators are ideal for construction or contracting jobs. Many of these units are equipped with TPEM Tier 3 Flex or Tier 4F engines and feature power ratings ranging from 40 kW to 500 kW. They are also available with a range of custom-engineered features.
Trailer-mounted portable generators offer flexible portability and are ideal for work in remote locations. Some models are designed for use as standby power, while others are designed for more frequent use. These generators can also be used for emergency situations or short-term jobs where electricity is not readily available. They come in a wide variety of styles and models, and many of them are hitched to a truck or can be hoisted by crane. This allows them to be easily transported between different job sites.