A permanent magnet synchronous elevator traction machine is commonly known as a gearbox-less elevator drive. It is installed in the elevator machine room or in the elevator hoistway, generally on the top floor of the building or inside the hoistway, and is the power device of the elevator. A permanent magnet synchronous elevator traction machine is a new type of bearingless motor that applies bearingless technology to a permanent magnet synchronous traction machine.
The permanent magnet synchronous elevator traction machine with multi-pole low-speed direct drive does not need a huge worm gear and a worm reduction gearbox with a mechanical transmission efficiency of only about 70%; High factor; because there is no excitation winding and no excitation loss, the heat generation is small, so there is no need for a fan, no wind wear, and high efficiency; using field-oriented vector transformation control, it has the same excellent torque control characteristics as DC motors, and the starting braking current is obvious. Below induction motors, both the required motor power and the inverter capacity are reduced.
The permanent magnet synchronous elevator traction machine is directly driven at low speed, so the bearing noise is low, with no fan, and no worm gear noise. The noise is generally 5 to 10 decibels lower, reducing noise pollution to the environment.
The permanent magnet synchronous elevator traction machine has no huge reduction gearbox, no excitation winding, and uses high-performance NdFeB permanent magnet materials, so the motor is small in size and light in weight, which can reduce the machine room or eliminate the need for a machine room.
The permanent magnet synchronous elevator traction machine motor does not need brushes and collector rings, so it has a long service life, and there is no oil and gas in the gearbox, which has less environmental pollution.
The permanent magnet synchronous elevator traction machine has no gearbox and is easy to maintain.
The permanent magnet synchronous elevator traction machine has low energy consumption, low noise, and environmental protection, which is also the biggest feature of the permanent magnet synchronous elevator traction machine.