At the time of the formation of the economy, there was a need for specialized devices. The main objective was the creation of non-contact switching methods and their implementation in the practical conditions of existing production. This became possible with the advent of semiconductor devices in power electrical
schemes. The thyristor power regulator has become widely used both in all industrial fields and in everyday life. With its help, smooth control over the
consumed electricity in household appliances and power plants was carried out. The scope of its application is huge - from well-known energy-saving devices, for example, for soldering irons, to temperature control in
induction furnaces.Thus, the thyristor power controller turned out to be effective when working with an active induction load. Its use in electric heating furnaces or appliances is extremely advisable. It significantly saves energy consumption and has a high efficiency. Nearly 99 percent is used in consumer installations. It should also be noted and high reliability in the operation of the device. To control the temperature there is no need to increase the speed of the control system. Smooth on / off power modules favorably affects their work and significantly extends their service life. Such a thyristor power controller has good performance.
The nature of the load should also be noted. Heating devices, as a rule, have low inductance. In such an electrical circuit, the thyristor power controller is not susceptible to adverse effects. They certainly arise when working with inductance. Reverse overvoltages are virtually eliminated here, which simplifies the design of the device and also extends the life of the power modules.
Good restoration properties of semiconductor devices are fully involved in the operation of such devices. With short-term overloads with their subsequent removal, the thyristor is restored and continues to work in the previous mode. But overloading in such circuits is an exception. In normal mode, thyristor power controllers work with correctly selected PV. Typically, the average current delivered to the load is less than the rated current of the power modules.
As a control system, innovative schemes are often applied. Using a PWM controller allowed us to get rid of high overloads when starting powerful devices. Such power controllers are not exposed to the harmful effects of extra large inrush currents. It also extends the life of the transducers and allows you to monitor all the necessary parameters in the tracking mode.
Despite the emergence of new elements, for example, IGBT modules, thyristor power controllers hold a strong position in all areas. In terms of a number of their operational characteristics, they are ahead of many innovative devices.