Inverter E Dc Converter

Magneti Marelli has been engaged for some years now in the development of power control systems for hybrid and electrical applications. In2009, the KERS system for the recovery of kinetic energy, developed by the motorsport sector, made its debut in Formula 1. At present, prototypes have been developed for experimental vehicles, and production is scheduled to start by the end of 2012.

Inverter

Description

• Up to 120 kW of peak power (expected to be extended to 200 kW)
• Galvanic insulation between high and low voltage, in order to ensure a proper level of safety for people and for the vehicle itself
• Liquid cooling, with water up to 85°C
• High integration, for the purpose of maximum volume reduction: the 4.5 litres represent a result in line with production standards of international excellence (with a power density of more than 26 kW/l)

DC/DC converter

The DC/DC converter is the electronic control unit connected to the two batteries fitted on the vehicle, with low voltage (12V conventional) and high voltage (up to 500V).

Description

• Two-way, in other words capable of transferring energy between the two batteries, in both directions (Step-Up and Step-Down).
• Up to  3.3 kW of peak power
• Efficiency between 90% and 95%, depending on the load and on vehicle conditions.

Power module

The power module contains the electronic power components in which the motor and DC/DC converter currents flow; this is the most innovative characteristic for automotive applications. The design and construction of the module are crucial phases in system development and production in order to achieve distinctive objectives on the market:

• Resistance to thermal and mechanical cycles requested by automotive applications, in order to guarantee 10 years of useful life 300,000 km.
• The operating currents (up to 1000 A) and voltages (up to 500V) represent an absolute innovation for automotive applications.