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MVD 2000 Series

The MVD2000 series is a range of medium voltage variable speed drives for speed and torque control. They are based on advanced frequency-conversion, multilevel inverter technologies and advanced vector control algorithms. The MVD2000 is a cost-effective modular and configurable solution. It is efficient and reliable and can be used in many industrial applications. Simple installation requirements, easy operation and maintenance make the MVD2000 the drive of choice across industrial segments that require energy savings or speed control for constant torque loads over the operating speed range.

MVD2000 delivers high-performance control accuracy using vector control. It provides dynamic responses to load fluctuation and high torque at low speeds, including during motor start-up.

Offers encoder-less and sensor-less vector control options. Speed sensors are installed depending on actual application conditions. Even without speed sensors, the system provides fast dynamic responses and high output torque when the motor is running at low speed.

Product Introduction
Features & Benefits
Advanced Technologies

Advanced vector control algorithms with and without speed sensors to enhance motor control performance.
Advanced auto tuning of motor parameters to improve the stability of the vector control.
DC current braking injection.
Power loss ride through, and synchronous transfer for single or several motors.
Coordination and control of masterslave variable frequency inverters to meet load sharing application requirements.
Use of phase-shift multi-pulse input transformer to decrease the input grid current harmonics and meet the IEEE 519-1992 requirements.
Use of cascaded multilevel inverter technologies to deliver nearly sinusoidal output voltage waveforms, meeting motor drive requirements for long-distance cables.
Enhanced Process & Quality Control

Capability to produce large output torque at low speeds and during motor startup, increasing speed response and control accuracy within motor torque limits.
Integrated PID controller for precise control on flow, pressure or other process variable.
Control operation under temporary input power loss and capability to restart automatically after grid fault and recovery.
Advanced protection functions such as motor stall and output fault to ground.
Friendly customer interface for easy system integration with customer’s process.
Control and Monitoring Functions

Speed command (rpm)
Operating speed (rpm)
Input/output power, current, voltage
Accumulated running time
MVD status
System bypass switches and user breaker status
Programmable analog I/Os
Alarms and faults
Event recording
Lower Cost of Ownership

System efficiency is higher than 98%, which decreases system operating costs (excluding phaseshift transfomer).
Optimized blower and water pump operations to ensure energysaving and shorten the investment recovery period.
Integration of input transformer allows three-cable-in-three-cableout reduced installation engineering effort.
Smooth speed control decreases mechanical stress, elminates pipe-hammer effect and reduces maintenance costs.
Multilevel output voltage and controlled starting currents reduce motor stress.
Synchronous transfer switchgear cabinet for soft starter applications for single or multiple motors.
Protection Functions

Over-current protection
Over-load protection
Transformer high-temperature alarm & over-temperature protection
MVD over-temperature protection
Under-voltage & over-voltage protection
Motor over-load protection (external protection relay connection)
Cooling fan abormal alarm
Cabinet door open protection
Cabinet pressure alarm
Output short-circuit protection
Input/output phase loss protection
Communication failure protection
Output grounding protection
Motor stall alarm/protection
Motor reverse rotation alarm/ protection
Over-speed and under-speed alarm/protection

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