Abstract:
Embodiments of the present disclosure relate to methods, systems and apparatus for computing a voltage advance used in controlling operation of an electric machine.
Abstract:
Embodiments of the present disclosure relate to methods, systems and apparatus for implementing dithering in motor drive system for controlling operation of a multi-phase electric machine.
Abstract:
A hydrogen fuel cell system (100) for charging a battery (116) of an electric vehicle, includes at least one tank (102) for storing hydrogen under pressure. A combined heat exchanger and air engine (104) expands the pressurized hydrogen and converts the expanding hydrogen into mechanical energy. A plurality of fuel cells (106) receive the expanded hydrogen for supplying heat to the heat exchanger and air engine (104) and supplying a first current for charging the battery (116). A generator (108) generates a multi-phase voltage in response to the mechanical energy. A electrical power converter (110) responsive to the multi-phase voltage provides a second current for charging the battery (116).
Abstract:
Methods and systems for operating an inverter having a plurality of high switches and a plurality of low switches coupled to an electric motor are provided. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated or each of the plurality of low switches is activated and each of the plurality of high switches is deactivated. In the second mode of operation, each of the plurality of high switches is deactivated and each of the plurality of low switches is deactivated.
Abstract:
Methods and systems for operating an inverter coupled to an electric motor are provided. The inverter has a plurality of high switches and a plurality of low switches coupled to the electric motor. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated. In the second mode of operation, each of the plurality of low switches is activated and each of the plurality of high switches is deactivated.
Abstract:
Methods and systems for operating an inverter having a plurality of high switches and a plurality of low switches coupled to an electric motor are provided. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated or each of the plurality of low switches is activated and each of the plurality of high switches is deactivated. In the second mode of operation, each of the plurality of high switches is deactivated and each of the plurality of low switches is deactivated.
Abstract:
A hydrogen fuel cell system (100) for charging a battery (116) of an electric vehicle, includes at least one tank (102) for storing hydrogen under pressure. A combined heat exchanger and air engine (104) expands the pressurized hydrogen and converts the expanding hydrogen into mechanical energy. A plurality of fuel cells (106) receive the expanded hydrogen for supplying heat to the heat exchanger and air engine (104) and supplying a first current for charging the battery (116). A generator (108) generates a multi-phase voltage in response to the mechanical energy. A electrical power converter (110) responsive to the multi-phase voltage provides a second current for charging the battery (116).
Abstract:
Embodiments of the present disclosure relate to methods, systems and apparatus for implementing dithering in motor drive system for controlling operation of a multi-phase electric machine.
Abstract:
Embodiments of the present disclosure relate to methods, systems and apparatus for computing a voltage advance used in controlling operation of an electric machine.
Abstract:
Methods and systems for operating an inverter coupled to an electric motor are provided. The inverter has a plurality of high switches and a plurality of low switches coupled to the electric motor. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated. In the second mode of operation, each of the plurality of low switches is activated and each of the plurality of high switches is deactivated.