# US 12,119,766 B2 · Control device and control method for rotating electric machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,119,766 B2 - Document ID: US12119766B2 - Status: Granted - Kind: B2 - Application number: 17/611,285 - Filed: 2020-04-28 - Published: 2022-07-21 - Granted: 2024-10-15 - Earliest claimed: 2019-05-17 - Assignees: Hitachi Astemo, Ltd. - Applicants: Hitachi Astemo, Ltd. - Inventors: Katsuhiro Hoshino - Web page: https://patentgrep.com/patent/US12119766B2 ## CPC - H02P 25/22: Multiple windings; Windings for more than three phases - B60L 15/025: {using field orientation; Vector control; Direct Torque Control [DTC]} - B60L 58/13: Maintaining the SoC within a determined range - H02P 3/18: for stopping or slowing an AC motor - H02P 6/08: Arrangements for controlling the speed or torque of a single motor (H02P6/10, H02P6/28 take precedence) - H02P 23/28: Controlling the motor by varying the switching frequency of switches connected to a DC supply and the motor phases - B60L 7/14: for vehicles propelled by AC motors - B60L 15/2009: {for braking} - B60L 2240/425: Temperature - H02P 23/20: Controlling the acceleration or deceleration - H02P 27/06: using DC to AC converters or inverters (H02P27/05 takes precedence) - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES ## Abstract An object of the present invention is to control driving force and braking force of a motor while considering an SOC of a battery. A control device controlling a rotating electric machine including windings of a plurality of independent system. The rotating electric machine is controlled in: a first mode in which an AC current is energized to the windings of the plurality of systems to generate torque such that a combined magnetic field generated in the windings is greater than or equal to a predetermined value; and a second mode in which the AC current having a phase difference different from that in the first mode is energized to the windings of the plurality of systems, the combined magnetic field generated in the windings is made smaller than the predetermined value, and current greater than or equal to that in the first mode flows. ## Claims ### Claim 1 A control device controlling a rotating electric machine including windings of a plurality of independent systems, wherein the rotating electric machine is controlled in: a first mode in which an AC current is energized to the windings of the plurality of independent systems to generate torque such that a combined magnetic field generated in the windings of the plurality of independent systems is greater than or equal to a predetermined value; and a second mode in which the AC current having a phase difference different from that in the first mode is energized to the windings of the plurality of independent systems, the combined magnetic field generated in the windings of the plurality of independent systems is made smaller than the predetermined value, and current greater than or equal to that in the first mode flows, wherein power running control and regenerative control are switched by an operation amount of one pedal, and during the regenerative control, the first mode and the second mode are switched according to a charge amount of a battery. ### Claim 2 (depends on 1) The control device according to claim 1, wherein the rotating electric machine is controlled by a third mode in which an AC current having a different phase is energized to the windings of the plurality of independent systems, the combined magnetic field generated is set to zero, and electric power of at least one of a battery and a capacitor is consumed by the AC current flowing through the windings of the plurality of independent systems. ### Claim 3 A control method for controlling a rotating electric machine including windings of a plurality of independent systems, wherein the rotating electric machine is controlled in: a first mode in which a control device that controls the rotary electric machine energizes the windings of the plurality of independent systems with an AC current to generate driving torque such that a combined magnetic field generated in the windings of the plurality of independent systems is greater than or equal to a predetermined value; and a second mode in which the AC current having a phase difference different from that in the first mode is energized to the windings of the plurality of independent systems, the combined magnetic field generated in the windings of the plurality of independent systems is made smaller than the predetermined value, and current greater than or equal to that in the first mode flows, wherein the control device: switches between power running control and regenerative control by an operation amount of one pedal; and switches between the first mode and the second mode according to a charge amount of a battery during the regenerative control. ### Claim 4 (depends on 3) The control method according to claim 3, wherein the control device further controls the rotating electric machine in a third mode in which an AC current having a different phase is energized to the windings of the plurality of independent systems, the combined magnetic field generated is set to zero, and electric power of at least one of a battery and a capacitor is consumed by the AC current flowing through the windings of the plurality of independent systems.