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US 9,853,570 B2Granted
Parallel inverter scheme for separating conduction and switching losses
AssigneeDeere & Company
InventorDoug Maly
Life of this patent
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AssigneeDeere & Company
InventorDoug Maly
Estimating the term…
In one example embodiment, a controller is coupled to a first inverter and a second inverter forming a parallel inverter scheme. The first inverter and the second inverter are configured to provide power to a load. The controller is configured to control the first inverter to operate according to a first operating state, while the second inverter is off, and turn off the first inverter before transition from the first operating state to a second operating state. The controller is further configured to control the second inverter to at least partially operate during the transition.
A controller coupled to a first inverter and a second inverter forming a parallel inverter scheme, the first inverter and the second inverter configured to provide power to a load, the controller configured to:
A voltage command generator coupled to a parallel inverter scheme including a first inverter and a second inverter, the voltage command generator configured to,
A parallel inverter scheme comprising:
Dependencies are inferred from the claim text.
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Electric propulsion with power supplied within the vehicle: using propulsion power supplied by batteries or fuel cells
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to inverters
Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters: for the…
Using discharge tubes with control electrode or semiconductor devices with control electrode: the static converters being arranged for operation…
About 9 years 9 months of term left · ends 14 Jul 2036 (estimated)
Example embodiments are related to electronic drive device systems and parallel inverter schemes used for driving and controlling alternating current (AC) devices such as Induction Machines or Interior Permanent Magnet (IPM) motors or machines.
Various applications of AC devices, for example in electric automobiles or off-highway heavy duty vehicles, demand the use of inverters (power electronic switching devices) that are capable of handling large current requirements for such applications.
Currently, one solution for meeting these demands is to design application-specific inverters for handling large currents. However, current handling capabilities of application-specific inverters may be extended up to a limit. Furthermore, the design of application-specific inverters may become cost-prohibitive depending on how large of a current they have to be able to handle.
Example embodiments will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings. FIGS. 1-5B represent non-limiting, example embodiments as described herein.
FIG. 1 is a block diagram of a system for controlling an electrical motor, according to an example embodiment;
FIG. 1A illustrates a first portion of the system of FIG. 1, according to an example embodiment;
Some example embodiments will now be described more fully with reference to the accompanying drawings in which some example embodiments are illustrated.
Accordingly, while example embodiments are capable of various modifications and alternative forms, embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that there is no intent to limit example embodiments to the particular forms disclosed, but on the contrary, example embodiments are to cover all modifications, equivalents, and alternatives falling within the scope of the claims. Like numbers refer to like elements throughout the description of the figures.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.