Integrated motor drive and battery charging system

Abstract

In one possible embodiment, a motor charging system for connection with a battery is provided having a rotor and a stator. The stator has delta H-bridge connected windings. The delta H-bridge includes an inverter at one side and a switching means at another side with each winding being connected between inverter pole switches and switching means pole switches. An A/C power port is connected to the windings such that when the switching means is off the A/C power port is connected to the battery bus via the windings and the inverter.

What is claimed is: 
     
         1 . An integrated power conversion system for a vehicle, the integrated power conversion system comprising:
 a) a rotor;   b) a stator comprising a delta H-bridge connected windings comprising:
 i) an inverter comprising a first set of pairs of switches connected across a battery bus, a first end of each winding being connected between a respective pair of switches; and 
 ii) a second set of pairs of switches connected across the battery bus in parallel with the first set of switches, a second end of each winding being connected between a respective pair of switches; and 
   c) an A/C power port connected to the second end of each winding.   
     
     
         2 . The system of  claim 1  further comprising interphase transformers connected between the windings and the inverter. 
     
     
         3 . The system of  claim 1  further comprising a DC power port connected to the battery bus. 
     
     
         4 . An integrated motor and battery charging system, the integrated motor and battery charging system comprising:
 a) a rotor;   b) a stator comprising a delta H-bridge connected windings comprising:
 i) an inverter; 
 ii) a switching means connected across the battery bus in parallel with the inverter; and 
 iii) the windings being connected between the inverter and the switching means; and 
   c) an A/C power port connected to the windings such that when the switching means is open circuited the A/C power port is connected to the battery bus via the windings and the inverter.   
     
     
         5 . The system of  claim 4  further comprising interphase transformers connected between the windings and the inverter. 
     
     
         6 . The system of  claim 4  further comprising a DC power port connected to the battery bus. 
     
     
         7 . The system of  claim 4  wherein each winding is connected between pole switches of the inverter and pole switches of the switching means.