Mai samar da na'urar amsa makamashi don mai sauya mitar yana tunatar da ku cewa a cikin 1967, an sami nasarar haɓaka mai sauya mitar kuma an sanya shi cikin aiki na kasuwanci. Bayan fiye da shekaru 40 na haɓakawa, ƙayyadaddun tsarin saurin mitar AC ya zama babbar hanyar ceton wutar lantarki, haɓaka hanyoyin samarwa, haɓaka ingancin samfur, da haɓaka yanayin aiki. Masu amfani da na'urori masu saurin canzawa suna fifita su sosai saboda ingancinsu mai girma, babban ƙarfin ƙarfinsu, da ingantaccen tsarin saurin gudu da aikin birki. Suna taka muhimmiyar rawa guda uku a fagage da yawa:
(1) Aikin farawa mai laushi. Lokacin da motar ke da wuyar farawa, saurin farawa kai tsaye sau da yawa sau 3-5 ana kimanta halin yanzu. Haɓaka kwatsam a halin yanzu ba wai kawai yana ƙara wahalar ƙirar mota da samarwa ba, har ma yana da tasiri mai mahimmanci akan ƙarfin tsarin grid na wutar lantarki, watsawa da wuraren rarrabawa, kuma yana haifar da babbar lalacewa ga kayan aiki irin su baffles da bawuloli. Ayyukan mai sauya mitar shine canza mita da girman ƙarfin wutar lantarki na AC, ta haka canza lokacin filin maganadisu mai motsi da samun nasarar sarrafa saurin motar. Wannan yana haifar da farawa na yanzu na motar don farawa daga sifili kuma a hankali ya karu, tare da matsakaicin ƙimar da ba ta wuce ƙimar da aka ƙididdigewa ba, rage tasirin grid ɗin wutar lantarki da buƙatun ƙarfin samar da wutar lantarki, da tsawaita rayuwar sabis na kayan aiki.
（2） Optimize motor operation. In systems such as fans and central air conditioning, traditional water supply methods are achieved through facilities such as water towers, high-level water tanks, and pressure tanks. The water pressure at the outlet is often affected by factors such as the height and storage capacity of the water tank, and it often changes. It is not easy to truly achieve constant pressure. In addition, the traditional speed control method for equipment such as fans and pumps relies on adjusting the opening of inlet and outlet baffles and valves to regulate the air and water supply volume. When the input power is too high, a large amount of energy is consumed in the blocking process of the baffle and valve, resulting in waste. This is like people transporting bricks that greatly exceed the demand to high-rise buildings without accurately calculating the quantity of work, resulting in a waste of manpower and working hours. Nowadays, engineers combine frequency converters, PID regulators, microcontrollers, PLCs, etc. to form a control system that can regulate the output flow of water pumps and reduce ineffective labor. People only need to set the outlet pressure of the pump station main pipe, compare the set value with the actual feedback value, and after the difference is processed through calculation, the system will issue control instructions to control the number and speed of water pump motors in operation, thus achieving the goal of constant pressure in the water supply main pipe. Compared with regulating valves to control water pressure, this system reduces pipeline resistance, greatly reduces the efficiency of interception losses, and does not require frequent manual operation, reducing labor intensity. In central air conditioning, fan and other systems, frequency converters also perform well. China Inverter Network pointed out that central air conditioning is designed based on the maximum required cooling (heating) capacity plus 10-20%, with high power consumption and great energy-saving potential. By using a frequency converter to control the speed and energy efficiency of central air conditioning refrigeration compressors, refrigeration pumps, cooling pumps, cooling tower fans, return air devices, etc., it is possible to avoid excessive flow and pressure, ensure the normal and effective operation of the system, and save 20% to 50% of electricity. For example, during the construction of the Shanghai Yangtze River Tunnel, the builders need to ensure good ventilation inside the tunnel, which is approximately 8.9 kilometers long and has an inner diameter of 13.7 meters. For this purpose, this project uses a frequency converter to directly set the motor speed based on the air volume, accurately adjust the air volume, optimize the use of electrical facilities, and achieve energy savings of 20% -45%.
(3) Yana da aikin kariya ga tsarin. Bayan gano yanayi mara kyau a cikin tsarin, mai sauya mitar zai iya gyara aikin ta atomatik ko toshe siginar sarrafa PWM na na'urar semiconductor, yana haifar da tsayawar motar ta atomatik, kamar rigakafin kankara mai wuce gona da iri, yankewar wuce gona da iri, zafi mai zafi na semiconductor, da kariyar kashe wutar lantarki nan take.