Elevator variable-frequency traction equipment energy saving system using bidirectional DC (direct current)-DC module
An energy-saving system and elevator technology, applied to elevators in buildings, electric energy storage systems, electrical components, etc., can solve problems such as unusable, power grid impact, thermal pollution, etc., and achieve safe, stable and reliable work
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[0020] Basic conditions:
[0021] 1 Elevator bus voltage (V1)
[0022] 2 Reference mains voltage (V2)
[0023] 3 supercapacitor module voltage (V3 working voltage range 90V-150V)
[0024] 4 Mains V4
[0025] When V1>V2, and V3<150; the elevator is in a state of potential energy, and V1 charges V3 through DC-DC. When V1<V2, and 110V<V3<150V; the elevator is in a non-potential energy state, and V3 sends electric energy back to V1 through DC-DC. At this time, when the power required by the elevator is greater than the power increased by the energy-saving system, the insufficient part is provided by the mains.
[0026] When V4=0; at this time, the ultra-capacity module provides three-phase 380V mains power to the elevator through DC-DC, DC / AC, and supplies the elevator for emergency use.
[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with th...
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