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Four Quadrant Vector Control Inverter
Four Quadrant Vector Control Inverter
Four Quadrant Vector Control Inverter, CHA100 adopts PWM controlled rectification technology upon IGBT, can achieve bi-directional control over rectification and power feedback. The power factor is close to be 1. The main circuit consists of modular units, and various power rating inverters can be composed of unit modules by parallel connection.
- Port Crane machinery: Quayside Container Crane, Ship loading cranes and ship unloaded, etc.
- Mining machinery: mine hoist, Belt Conveyor, etc.
- Metallurgical machinery: Multi-motor drive rolling mill, etc.
- Foodstuff processing machinery and Pharmaceutical Machinery: Centrifuge, scouring machine, etc.
- Rectifier/regenerative unit can regenerative the energy back to gird via the sine wave. Compared to the classical braking unit plus braking resistance, this technology is more effective in energy saving and beneficial to surrounding.
- Excellent performance of close loop vector control: Output torque is up to 200% at zero speed.
- To simplify the system and maintain system conveniently, power unit of rectifier is the same with inverters in hardware configuration.
- To work together with common DC bus, rectifier and inverter adopt completely independent control solution.
- Power up logic control, brake control, over speed protection and start up torque previous compensation which ensure that the crane runs safely and reliably.
- Adopts profibus - DP and modbus communication protocol.
- Master-slave control function fulfills power balance and speed synchronisation of multi motor application.
- To control the system conveniently and decrease the costs, the 2nd control and switching function is available.
- Control mode: Sensor less vector control, vector control, V/F control.
- Double protection on system & units, time sequence control and guard protection control.
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