What Components Make Up an Elevator Inverter?
In modern elevator systems, the elevator inverter plays a critical role. It determines whether the elevator runs smoothly, efficiently, and safely. As a key part of the elevator drive system, the inverter precisely controls the motor speed by adjusting frequency and voltage, ensuring a comfortable riding experience for passengers.
So, what components make up an elevator inverter? What functions does each part perform? Next, the A-FLY elevator technology team provides a full explanation.
What Is an Elevator Inverter?
An elevator inverter is an electronic device that controls the speed of the traction machine by adjusting the frequency of the input three-phase power supply. It is widely used in machine-room-less elevators, passenger elevators, freight elevators, panoramic elevators, and escalator systems.
Common brands and models include INVT GD300L, STEP SVC series, Yaskawa L1000A, Fuji Frenic Lift, and Monarch NICE3000.
Core Components of an Elevator Inverter
Rectifier Unit
Converts three-phase AC power into DC power to supply the DC bus voltage for the entire inverter system.
Filter Circuit
Consisting of filter capacitors and reactors, it smooths the DC voltage and reduces voltage ripple.
IGBT Inverter Module
Uses IGBT power modules to convert DC power into variable-frequency AC output to control motor speed — the “power core” of the inverter.
Driver Board
Located between the control board and power module, it provides isolated drive signals for the IGBT module.
The “brain” of the inverter, responsible for speed control, PID regulation, SVC vector algorithms, and parameter settings.
Brake Unit + Brake Resistor
Consumes excess regenerative energy during operation to prevent DC bus overvoltage and ensure stable performance.
Encoder Interface
Receives feedback signals from the traction machine encoder to achieve precise closed-loop speed control.
Cooling System
Includes fans and heat sinks to ensure safe operation under high load or continuous working conditions.
Communication & Interface Module
Supports CANopen, RS485, Modbus, Profibus, and other communication protocols to connect with the elevator control system.
Elevator Inverter Solutions from A-FLY
As a professional elevator parts supplier, A-FLY offers a full range of elevator control and drive system components, including:
2.NICE3000 elevator control system
3.Elevator main control boards & door operator boards
4.Traction machine encoders & safety circuit modules
5.Brake resistors, reactors, filters for inverters
Application Areas: Elevator maintenance, modernization projects, and elevator system upgrades.
Why Choose A-FLY?
High-quality elevator components
Customization and bulk supply available
Professional technical support
Fast global delivery service
A-FLY — your reliable partner for elevator spare parts solutions.
