Catalog

Description

FNS-series automotive inverter drives are designed for use in electric vehicles: passenger cars (FNS-60) and trucks (FNS-70). They can also be used for boats and ships with the option of sensorless control of synchronous motors (PMSM), and other vehicles or machinery. FNS functions with both three-phase and six-phase PMSM motors. We can customize the drivers for laboratory use in research and development units.

The inverter is one of the main components of the drive system of an electric vehicle. It powers and controls the electric motor to achieve the desired torque and rotational frequency of the drive unit. The inverter converts electrical energy between the DC circuit (from the traction battery) and the AC circuit (from the electric motor), as well as  controls the operation of the electric motor: starting/stopping, forward/reverse rotation, selection and control of speed, modification or limitation of torque.

FNS-series automotive inverter drives, developed by TWERD ENERGO-PLUS, features an advanced control algorithm and a compact design. They are intended for powering and controlling the operation of synchronous motors with PMSM (Permanent Magnet Synchronous Motor) and brushless DC motors (BLDC). These motors are extensively used in the drives of passenger cars, trucks, buses, ships, as well as other vehicles and mechanisms.

 

Specifications:

• Nominal Power:

– FNS-60: 43 кВт, 75 кВт i 100 кВт;

– FNS-70: 150 кВт, 200 кВт.

• Battery Voltage:

– 300÷400 V DC for the 43 kW frequency converter;

– 500÷650 V DC for the 75 kW and 100 kW frequency converters;

– 500÷750 V DC for the 150 kW and 200 kW frequency converters.

• Rated Operating Current:

– 100 A for the 43 kW and 75 kW frequency converters;

– 150 A for the 100 kW frequency converter;

– 300 A for the 150 kW frequency converter;

– 400 A for the 200 kW frequency converter.

• Three-Phase and Six-Phase Variants:

– the six-phase drive ensures lower torque ripple and smaller dimensions compared to three-phase drives of the same power. It also allows operation in one-star configuration in case one of the transistor branches fails (emergency mode).

• Control:

– field-oriented control (FOC) with MTPA (maximum torque per ampere) for optimal torque at the lowest energy consumption;

– linear U/f control.

• Frequency manipulation (switching frequency): 6 kHz to 12 kHz
• Control circuit voltage: 12 V DC
• Position sensor: SSI protocol encoder, incremental encoder with RS422 standard, resolver, Hall effect sensors
• Digital inputs: 4 general-purpose and 1 fast input
• Digital outputs: 2 general-purpose and 1 special output
• Analog Inputs: 1
• Communication Protocol:

– CANOpen: CAN 2.0b 125 kbit/s;

– Modbus RS-485.

• Connectors: HVBI Amphenol Pcd
• Protection: against overload current, overvoltage, undervoltage, overheating of the frequency converter and connected motor
• Cooling: a mixture of 50% water and 50% ethylene glycol
• IP 67