Patent ID: 9387766
Filing Date: 2016-07-12
CPC Classification: B60K,B60L,B60W,H02M,Y02T,Y10S

Claim Text:
1. A vehicle comprising: a transmission having a polyphase electric machine; an energy storage system (ESS) having a direct current (DC) battery pack with a DC battery voltage; a plurality of sensors operable to measure a voltage and a current at each phase winding of the polyphase electric machine, and a speed or position of a rotor of the electric machine; a power inverter module (PIM) that is electrically connected to the ESS and includes: a controller in communication with the sensors, the bypass switch, and with the first and second plurality of switches, wherein the controller is programmed to calculate a torque of the electric machine using the measured voltage, current, and speed, and to enable the DC boost converter by opening the bypass switch via a first switching control signal when the speed and the calculated torque of the electric machine are within a predetermined boost range, and to bypass the DC boost converter by transmitting a second switching signal closing the bypass switch when the speed and the calculated torque are not within the predetermined boost range, such that a voltage input to the power inverter is equal to the DC battery voltage whenever the DC boost converter is bypassed and exceeds the DC battery voltage whenever the DC boost converter is enabled.