Electric motor modulation mode switching architecture
AssigneeSilicon Mobility SAS
InventorsEric MINIERE, Farid TAHIRI, Khaled DOUZANE
Life of this patent
Estimating the term…
Abstract
The invention relates to the field of (digitally controlled) electric motors, (digital) control system, (electric) motor based system including those (digital) control system and methods pertaining thereto. The invention addresses the complexity of dynamically switching between two or more different modulation algorithms such as SVPWM (Space Vector Pulse Width Modulation), SPWM (Sinusoidal Pulse Width Modulation), THIPWM (Third Harmonic Pulse Width Modulation), DPWM (Discontinuous Pulse Width Modulation), OPP (Optimized Pulse Pattern).
Claims19
A control system for regulating and modulating electric motors, comprising:
- a regulating device, adapted for receiving regulating parameters to align with the active modulating device sampling rate;
- a plurality of modulating devices, each with a different sampling rate, all inputting the signal from said regulating device;
- a selector for selecting one of the output signals provided by said modulating devices;
- and
- a controller for steering the selection by said selector and providing said regulating parameters to said regulating device.
A method for switching the regulating and modulating mode of an electric motor from a first mode to a second mode, comprising:
- receiving a switch request at a first appropriate time, changing the regulating device parameters to align with the modulating device sampling rate of said second mode and starting sampling in accordance with said sampling rate of said second mode;
- activating said free-wheel override device for inserting a free-wheel period and/or said dead-time insertion device for inserting a dead-time;
- and either simultaneously with or thereafter correspondingly de-activating said free-wheel override device and/or said dead-time insertion device.
(canceled)
(canceled)
Dependencies are inferred from the claim text.