Energy -efficient frequency conversion actuator of 1140V

The utility model discloses an energy -efficient frequency conversion actuator of 1140V, including rectifier circuit, filtering and tank and dc -to -ac converter, rectifier circuit is three -phase full -bridge three -phase rectifier circuit, filtering inserts dc -to -ac converter front end dc circuit after parallelly connected with tank and three -phase full -bridge three -phase rectifier circuit in, inserts dc -to -ac converter front end dc circuit behind the parallelly connected sampling circuit in both ends of dc -to -ac converter direct -current input, and it has the regulation and control circuit to establish ties among the dc -to -ac converter front end dc circuit, regulates and control the tank 0 that the circuit is used for regulating and control the dc -to -ac converter. Silicon controlled rectifier in vogue switches on on the beam type beam -pumping unit, and the dc -to -ac converter gets to be exported three -phase alternating current after electric and satisfy motor heavy load operation, silicon controlled rectifier in vogue ends under the beam type beam -pumping unit, and the dc -to -ac converter loses the electricity, resistance R power supply this moment, and inverter output three -phase alternating current satisfies motor no -load running. Reach the power consumptive reduction of ton liquid 14.71% in 100 -meter dash after the use. Meritorious economize on electricity rate is 14.71%, and idle economize on electricity rate is 97.93%.