1. EEI MV Inverter
MEDIUM VOLTAGE
2Q & 4Q INVERTERS

2. New EEI MV 4Q Inverter
• Range of Voltage
• 3,3kV
• 6,6kV
• 2.160V – 4160V (USA)
• Range of Power
– from 200kW @3,3kV
– to 6,2MW @6,6kV
• Technology
– IGBT HV
– NPC 3 level

3. 8TM MV SS Catalog
Cabinet configuration IP31

4. 8TM MV SS Catalog
Cabinet configuration IP31
Module configuration IP00

5. 4Q Regenerative IGBT Inverter
• General data:
– Range of Power:
• 200‐3,1MVA 3,3kV
• 400‐6,2MVA 6,6kV
– Drive type: Regenerative (4Q)
– Power components: HV IGBT by Mitsubishi
– Line side grid connections:
• AFE (Active Front End)
• Three phases/three levels
– Available control types:
• Sensorless
• V/F
• Vector Control

6. Inverter Data
The grid side stage and motor/generator side is composed of
HV IGBT removable module stacks reduced MTTR.
• Robustness of the NPC 3 level solution
• HV IGBT technology:
– Availability of the components in the market
– The low impact of the inverter on the grid due
to the high commutation frequency (reduced harmonic
content, controlled power factor)

7. Solution A) double active rectifier

8. Solution B) 3 level NPC Input

9. General data:
• Transformer Primary Voltage: TBD
• Transformer secondary Voltage: (TBD)
• Transformer secondary Voltage: 3300 Vca
• Connection type: D/YD or D/Y11 (TBD)
• Supply voltage tolerance: +/‐ 10% (1)
• Mains frequency: 50/60Hz
• Supply frequency tolerance: +/‐ 3%
• Auxiliary voltage: 400Vca (3 phases) (2)
• Ambient temperature: 0°C to +40°C (3)
• Aux. circuit voltage: 110 V 50Hz
• Environment: TBD
• Signal. Circuit: 24 Vdc
• Altitude: < 1000 m a.s.l.
• Installation: Indoor
• Humidity: 5 to 95 % non condensing
• Options heaters
Notes:
(1) in case of LVRT request see the options
(2) in case of LVRT a UPS feeder is required
(3) solution available for different temperature range

10. Data sheet 3,3kV
• Cooling form: Water cooling
• Enclosure Class: IP 3X (STD)
• Finishing/colour supplied in RAL 7032 Epoxy powder painting (other
colours on request)
• Cabinet: is metal enclosed type built by sheets
20/10 mm thick, double side access,
water to air heat cooling system is
included into the cabinet dimension
• Dimension: W4400xH2200xD1000 (mm)

11. Manufacturing general features
EEI quality system comply with ISO 9001‐2008 (RINA certificate n° 3562/00 dated 27/10/2010)
All the equipment supplied from EEI comply with:
• Directive 2006/95/EC of the European Parliament and of the Council, dated 12 December 2006.
• CEI EN 60204‐11: Safety of machinery . Electrical equipment of machines.
• Part 11: Requirements for HV equipment for voltage above 1000 V a.c. or 1500 V d.c. and not
exceeding 36 kV.
• CEI EN 61800‐4: Adjustable speed electrical power drive systems.
• Part 4 :General requirements‐Rating specification for a.c. power systems above 1000 V a.c. and
not exceeding 35 kV.
• CEI EN 61800‐5‐1: Adjustable speed electrical power drive systems.
• Part 5‐1 :Safety requirements‐Electrical, thermal and energy.(It applies to systems working
voltage from 1 to 35 kV).

12. MV module 3,3kV 550A

13. Cabinet module

14. Cabinet assembling phase

15. Footprint and cabinet dimension

16. Data sheet
Functions:
• Over‐current
• Short circuit
• Ground fault
• Phase loss detection
• Over voltage
• Under voltage
• Over temperature
• Generator/grid sides overload
detection
• Others under request
Bus Interface and MMI:
• RS 485 (built in communication)
• Ethernet connection:
– Modbus TCP (Option)
– Web server (Option)
• CAN Bus (built in communication)
• Profibus DP ™ (Option)
• Front door Operator interface
complete of touch screen keypad 7”
• Others under request

17. Data sheet 4Q NPC Inverter
3,3kVAC
Model Code
Power Rated
Motor
Generator
(MVA)
Current (A) Std
sizes
Dimension (mm)
WxHxD
1.0 180 3700x2200x1000
1.3 230 3700x2200x1000
8HV330260 1.5 260 * 3700x2200x1000
1.8 315 3700x2200x1000
2.1 370 3700x2200x1000
8HV330400 2.3 400 * 4400x2200x1000
2.6 460 4400x2200x1000
2.9 510 4400x2200x1000
8HV330550 3.1 550 * 4400x2200x1000

18. Options
Additional components Option
•Grid MV breaker/interface N.A.
•Braking system Option
•Transformer Option
•dV/dt or sinus filters generator side Included
•LCL Filters grid side (option‐supplied with LC
filter)
Option
•Common mode filters Option
•Lightening protection Option
•Generator disconnector
Option

19. Application 2Q
Application 2Q
Water treatment Pumps
Oil and Gas Pumps, compressor
Cement Kiln, blowers, mills, Conveyor,
belt
Marine Blowers
Machine Builders constant torque drives
Paper Pumps, compressor
Sugar Centrifugal, pumps
Power generation Pumps, fans, compressor
Mining Conveyor, belt

20. Application 4Q
Application 4Q
Test benches Engines – Electrical
motor/generator: Asynchronous,
Synchronous, PM
Cement Conveyor machines, belt systems
Marine Propulsion drives
Machine Builders Constant torque drives
Excavators
Rolling Mill
Mill Drives
Daschle Pumps
Crasher
Pumps, compressor
Sugar Centrifugal
Power generation Wind turbine converter
Mining Conveyor belt

21. THANK YOU