MV510 High-Voltage Inverter Design Principle

The MV510 series high-voltage inverter adopts an AC-DC-AC configuration. The main circuit switching element is IGBT. The MV510 inverter adopts a cascaded power unit topology, making full use of the mature technology of low-voltage inverters, and therefore has very high reliability.

Main circuit topology diagram

• 3 kV series: generally composed of 9 power modules, with every 3 power modules connected in series to form one phase, and the three phases connected in Y.

• 6 kV series: generally composed of 15 power modules, with every 5 power modules connected in series to form one phase, and the three phases connected in Y.

• 10 kV series: generally composed of 24 power modules, with every 8 power modules connected in series to form one phase, and the three phases connected in Y.

MV510 High-Voltage Inverter Product Parameters

• Inverter rated capacity: 250–10,000 kW / 315–12,500 kVA ※

• Rated voltage: 2.4 kV–13.8 kV (-20% to +10%) ※

• Rated frequency: 50 Hz / 60 Hz (customizable) ※

• Modulation technology: CPS-SPWM

• Control mode: V/f, VC, SLVC

• Control power supply: 380 VAC, ±10% AC three-phase four-wire

• Input power factor: ≥0.95 (above 20% load)

• Overall efficiency: ≥96%

• Output frequency range: 0 Hz–120 Hz ※

• Frequency resolution: 0.01 Hz

• Overload capacity: 120%, 2 minutes

• Current limiting protection: 10%–150% setting

• Analog input: 2 groups 4–20 mA (expandable)

• Analog output: 4 groups 4–20 mA (expandable)

• Host communication: isolated RS485 interface, ModBus RTU; Profibus DP; Industrial Ethernet, etc. (optional)

• Acceleration/deceleration time: 0.1 s–6,500 s (>6,500 s customizable)

• Digital input/output: 12 groups DI / 9 groups DO (output expandable)

• Operating ambient temperature: -10 to +40°C; derated use at +40 to +50°C; preheating required below -10°C ※

• Storage/transport temperature: -40 to +70°C ※

• Cooling method: forced air cooling

• Cable entry/exit: bottom entry/bottom exit / top entry/top exit; customizable for special applications

• Ambient humidity: <95%, non-condensing ※

• Installation altitude: <1,000 m; above 1,000 m, derate by 1% for every additional 100 m

• Dust: non-conductive, non-corrosive, <6.5 mg/dm³ ※

• Protection degree: IP30, IP31, IP42 (optional) ※

• Cabinet color: RAL7035 (or customized according to color sample provided by the user)

※ For detailed information, please consult our sales staff.

MV510 High-Voltage Inverter Product Advantages

• Achieve an ideal operating mode

  Easily achieve the ideal operating mode of directly controlling air volume (flow) according to the inverter speed without damper (air door) loss.

  The flying start function enables the fan to restart smoothly even in a freewheeling state.

  The minimum frequency setting function prevents the water pump from failing to discharge water, achieving stable water supply.

  Frequent start/stop can be achieved.

• Energy-saving operation

  By changing from the original commercial operation damper control method to inverter operation controlling motor speed, a large energy-saving effect can be achieved.

  Machinery in standby operation (light-load operation) has greater energy-saving advantages.

• Extend equipment service life

  During no-load operation, it runs at low speed, which can extend equipment service life.

  Using an inverter enables soft start and soft stop, with little impact on the machine.

• Stable operation

  When an instantaneous power failure occurs, the instantaneous stop auto-restart function can quickly restore normal operation.

• Reduce load on power supply equipment

  The inverter can arbitrarily set acceleration/deceleration time, greatly reducing starting current, thereby reducing the capacity of power supply equipment.