FVA Variable Frequency Drive
Regenerative VFD with an Active Front End for asynchronous motor
HARSVERT-FVA series VFD operates smoothly in four quadrants. Energy can flow bi-directionally between power grid and the motor.
1. Characteristics
Input current harmonic: <3% (comply with standard IEEE519);
Input power factor: >0.95(>20% load);
Output current harmonic: <2.5%; output DC component: <1%;
Efficiency ≥96% at full load(including the phase-shifting transformer);
PWM rectifier technology. Energy can flow bi-directionally between power grid and the motor.
Selection of the motor control mode:speed-sensor less vector control; speed close loop vector control; V/F control;
Speed sensor-less vector control: speed-adjusting range: 100:1; static speed precision: 0.5%; start torque: 150% rated torque; the response time of dynamic torque: less than 200ms;
Speed close loop vector control: speed-adjusting range: 500:1; static speed precision: 0.1%; start torque:150% rated torque; the response time of dynamic torque: less than 150ms;
Auto re-start after the recovery of main medium voltage;
Fly-start at any rotating speed;
Bypass the faulty power cell automatically( OPTIONAL FUNCTION);
Auto-tuning of the parameters for asynchronous motor's stator and rotor;
VFD will continue running in light failure;

2. Application
HARSVERT -FVA series VFD are applicable to start the asynchronous motor with the load, big torque fluctuation, high precision of speed-adjustment, frequent acceleration and deceleration, or require the regenerative energy, such as:
(1) Regenerative energy: Lift, Rolling mill.
(2) Big load fluctuation: Compressor, Wind tunnel.
(3) Large start torque: Lift, Rolling mill, Mixer, Conveyor.

Leader & Harvest is a professional variable-frequency drive manufacturer in China. Our company is located in Beijing. We have convenient transportation infrastructures, such as international airport, railway, highway, etc. Therefore, you can largely reduce your international purchasing cost. We are mainly dedicated in manufacturing medium voltage variable frequency drives of different powers, such as 3kV, 6kV, 11kV, etc., sold at economical prices. Our VFDs have features of high precision, wide range of speed regulation, energy saving and environmental protection. Welcome customers to contact us!