APPARATUS FOR ENERGY TRANSFER USING CONVERTER AND METHOD OF MANUFACTURING SAME

摘要

According to an aspect of the invention, a motor drive circuit includes a first energy storage device configured to supply electrical energy, a bi-directional DC-to-DC voltage converter coupled to the first energy storage device, a voltage inverter coupled to the bi-directional DC-to-DC voltage converter, and an input device configured to receive electrical energy from an external energy source. The motor drive circuit further includes a coupling system coupled to the input device, to the first energy storage device, and to the bi-directional DC-to-DC voltage converter. The coupling system has a first configuration configured to transfer electrical energy to the first energy storage device via the bi-directional DC-to-DC voltage converter, and has a second configuration configured to transfer electrical energy from the first energy storage device to the voltage inverter via the bi-directional DC-to-DC voltage converter.

主权项

1. A traction system comprising:
an electric motor configured to propel a vehicle; a voltage inverter configured to supply an AC power signal to the electric motor; and a motor drive circuit configured to supply a DC power signal to the voltage inverter, the motor drive circuit comprising:
a first battery;a second battery;a bi-directional buck/boost converter coupled to the first and second batteries, the bi-directional buck/boost converter having a first inductor and a first transistor;an input device configured to receive electrical energy from an external energy source; anda multi-position switch having a first position configured to couple the first battery to the voltage inverter via the bi-directional buck/boost converter, and having a second position configured to couple the second battery to the input device via the bi-directional buck/boost converter.