WO2018173469A1 - モータシステム - Google Patents
モータシステム Download PDFInfo
- Publication number
- WO2018173469A1 WO2018173469A1 PCT/JP2018/002234 JP2018002234W WO2018173469A1 WO 2018173469 A1 WO2018173469 A1 WO 2018173469A1 JP 2018002234 W JP2018002234 W JP 2018002234W WO 2018173469 A1 WO2018173469 A1 WO 2018173469A1
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- WIPO (PCT)
- Prior art keywords
- relay
- motor
- inverter
- solid state
- state relay
- Prior art date
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- 230000007935 neutral effect Effects 0.000 claims abstract description 22
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- 102100026229 Translocon-associated protein subunit beta Human genes 0.000 description 51
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/22—Multiple windings; Windings for more than three phases
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/0241—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an overvoltage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/046—Controlling the motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
- B62D5/0484—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures for reaction to failures, e.g. limp home
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/145—Stator cores with salient poles having an annular coil, e.g. of the claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/12—Monitoring commutation; Providing indication of commutation failure
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
Definitions
- the present invention relates to a motor system including a motor and a controller that controls energization of a plurality of stator coils of the motor.
- a motor system of an electric power steering device that generates a steering assist force by a motor is known.
- two power supply relays composed of semiconductor switching elements are provided in series between an in-vehicle battery and an inverter.
- the power relay on the inverter side is arranged with the parasitic diode as the forward direction from the in-vehicle battery to the inverter.
- the power relay on the in-vehicle battery side is arranged with the parasitic diode as the forward direction from the inverter toward the in-vehicle battery.
- the present invention has an object to provide a motor system with improved durability while enabling regeneration of a counter electromotive voltage generated in the motor due to rotation of the rotor caused by external force.
- a motor system is arranged in series from the inverter side in series between an inverter that controls energization of a plurality of stator coils of the motor and a battery that supplies power to the inverter.
- a first solid state relay and a second solid state relay wherein the first solid state relay has a first diode whose forward direction is from the battery toward the inverter, and the second solid state relay.
- the relay has a second diode whose forward direction is from the inverter toward the battery. Then, when the supply of power from the battery to the inverter is shut off, the first solid state relay is turned off after turning off the plurality of motor relays provided in each of the plurality of stator coils.
- the motor system of the present invention it is possible to improve the durability while enabling regeneration of the counter electromotive voltage generated in the motor due to rotation of the rotor caused by external force.
- FIG. 1 shows an example of an electric power steering apparatus to which a motor system according to a first embodiment of the present invention is applied.
- the electric power steering apparatus 10 of the vehicle 100 includes a steering wheel 11, a steering shaft 12, a pinion shaft 13, a pinion gear 14, and a rack gear 15.
- the steering wheel 11 receives a steering operation force of the driver, and the steering wheel 11 is connected to the steering shaft 12.
- the pinion shaft 13 is connected to the steering wheel 11 via the first universal joint J1, the intermediate shaft MS, the second universal joint J2, and the steering shaft 12.
- the pinion gear 14 is connected to the tip of the pinion shaft 13, and the rack gear 15 meshes with the pinion gear 14 to convert the rotational motion of the pinion gear 14 into linear motion.
- the electric power steering apparatus 10 includes a motor 16, a speed reducer 17, a steering torque sensor 18, a vehicle speed sensor 19, and a motor control device 20.
- the motor 16 is used as a generation source of the steering assist force, and the speed reducer 17 is connected to the rotating shaft 16a of the motor 16 to reduce the rotational speed of the rotating shaft 16a and transmit it to the rack gear 15.
- the steering torque sensor 18 detects the steering torque based on the twist angle of the pinion shaft 13 (or the steering shaft 12), and the vehicle speed sensor 19 detects the vehicle speed of the vehicle 100.
- the motor control device 20 is electrically connected to the steering torque sensor 18 and the vehicle speed sensor 19 and controls the rotational drive of the motor 16.
- the motor 16 and the motor control device 20 constitute a motor system 1.
- the rotational force of the steering wheel 11 is applied to the rack gear 15 via the steering shaft 12, the second universal joint J2, the intermediate shaft MS, the first universal joint J1, the pinion shaft 13, and the pinion gear 14.
- the rack gear 15 linearly moves in the vehicle width direction of the vehicle 100.
- Both ends of the rack gear 15 are connected to a pair of steering mechanisms 102a and 102b that steer the pair of steered wheels 101a and 101b, and the rack gear 15 linearly moves in the vehicle width direction so that the direction of the pair of steered wheels 101a and 101b is achieved. Can be changed.
- the motor control device 20 inputs the output signal ST from the steering torque sensor 18 and the output signal VSP from the vehicle speed sensor 19, and drives the motor 16 to rotate based on the output signal ST and the output signal VSP.
- a steering assist force corresponding to 100 driving conditions is generated.
- FIG. 2 shows an example of the internal configuration of the motor system 1.
- the motor 16 is a three-phase brushless motor, and has a stator (not shown) and a rotor 16R.
- the stator includes a first winding set (a plurality of stator coils) 161 composed of three-phase windings of a U-phase coil U1, a V-phase coil V1, and a W-phase coil W1, and a U-phase coil U2, a V-phase coil V2, and W.
- the second winding set 162 including the three-phase windings of the phase coil W3 includes two independent winding sets.
- the rotor 16R is a permanent magnet rotor that is rotatably provided at the center of the stator.
- the first winding set 161 and the second winding set 162 are wound around the stator while being insulated from each other, and share a magnetic circuit.
- each of the U-phase coil U1, the V-phase coil V1, and the W-phase coil W1 in the first winding set 161 is electrically connected at a neutral point N1 to form a Y connection.
- One end of each of the U-phase coil U2, the V-phase coil V2, and the W-phase coil W3 in the second winding set 162 is electrically connected at a neutral point N2, and a Y connection is made.
- the motor controller 20 includes a first controller 30 that receives power supply from the in-vehicle battery B and controls energization of the first winding set 161 of the motor 16, and a second winding set that receives power supply from the in-vehicle battery B. And a second controller 40 that controls energization 162.
- the first controller 30 and the second controller 40 include processors 31 and 41, respectively.
- the processors 31 and 41 receive the output signal ST from the steering torque sensor 18 and the output signal VSP from the vehicle speed sensor 19, respectively. Then, each of the processors 31 and 41 calculates a necessary steering assist force (target steering assist force) from the current steering torque and vehicle speed so that the motor 16 generates a rotational driving force corresponding to the target steering assist force.
- the energization of each winding set 161, 162 is controlled.
- the energization ratio which is the ratio between the energization amount from the first controller 30 to the first winding set 161 and the energization amount from the second controller 40 to the second winding set 162, is 50% to 50% in advance. Is set. Then, the processors 31 and 41 correspond to the winding sets 161 and 162 so that the motor 16 generates a rotational driving force corresponding to the target steering assist force based on the total energization amount from the first controller 30 and the second controller 40. Control energization.
- the processor 31 of the first controller 30 has an abnormality diagnosis function for diagnosing whether or not an abnormality (failure) has occurred in the first energization system including the first controller 30 and the first winding set 161. Yes.
- the processor 41 of the second controller 40 has an abnormality diagnosis function for diagnosing whether an abnormality has occurred in the second energization system including the second controller 40 and the second winding set 162.
- the processor 31 of the first controller 30 and the processor 41 of the second controller 40 are connected so as to be directly communicable via the communication line 20L.
- the processor diagnosed as having an abnormality is as follows. . That is, the processor diagnosed as having an abnormality performs control to stop energization of the corresponding winding set, and at the same time indicates an abnormality indicating the occurrence of abnormality to the other processor via the communication line 20L. Send a signal.
- the other processor that has received the abnormal signal forcibly sets the energization ratio to any one of 50 to 100% so that the motor 16 generates a rotational driving force in accordance with the steering assist force that enables the steering operation. Is set to a predetermined value to control energization to the corresponding winding set.
- the motor system 1 has two designs, the first energization system and the second energization system, as the energization system for the motor 16, so that the redundant design is made. Since the configurations of the first energization system and the second energization system are the same, the first energization system including the first winding set 161 of the motor 16 and the first controller 30 in the motor system 1 will be described in detail below.
- FIG. 3 is a circuit diagram illustrating a configuration example of the first energization system in the motor system 1.
- the first energization system includes the first controller 30 and the first winding set 161.
- the first controller 30 includes an inverter 32 that controls energization of the first winding set 161 of the motor 16.
- the inverter 32 is connected to the positive electrode of the in-vehicle battery B through the positive-side power supply line BL1 and receives power supply, and is connected to the negative electrode of the in-vehicle battery B through the negative-side power supply line BL2 and is connected to the ground. Yes.
- a smoothing circuit 33a formed by connecting two capacitors C1, C2 connected to the ground at both ends of the coil L connecting the inverter 32 and the vehicle-mounted battery B is provided on the positive-side power supply line BL1 of the first controller 30. It has been. As a result, power is supplied to the inverter 32 in a state where the ripple voltage is reduced from the power supply voltage Vb of the in-vehicle battery B via the smoothing circuit 33a.
- a power supply circuit 33b that inputs the power supply voltage Vb of the in-vehicle battery B via the ignition switch IGN and outputs a necessary voltage in each part of the first controller 30 is connected to the positive power supply line BL1 of the first controller 30. Has been.
- the negative power supply line BL2 of the first controller 30 is provided with a current detection circuit 33c that connects both ends of the shunt resistor R that connects the inverter 32 and the ground and the two input terminals of the amplifier OP. Yes.
- the current detection circuit 33 c detects the current supplied from the in-vehicle battery B to the first winding set 161 of the motor 16.
- the amplifier OP outputs a voltage corresponding to the potential difference between both ends of the shunt resistor R as a detected current value from its output terminal.
- a U-phase arm, a V-phase arm, and a W-phase arm are connected in parallel between the positive-side power supply line BL1 and the negative-side power supply line BL2 of the in-vehicle battery B to form a three-phase bridge circuit.
- the U-phase arm is formed by connecting an upper arm side switching element U + and a lower arm side switching element U ⁇ in series.
- the V-phase arm is formed by connecting an upper arm side switching element V + and a lower arm side switching element V ⁇ in series.
- the W-phase arm is formed by connecting an upper arm side switching element W + and a lower arm side switching element W ⁇ in series.
- the inverter 32 the other end of the U-phase coil U1 of which one end is connected to a neutral point N1 is, U-phase arm switching elements U + and the switching element U - is connected between the.
- the other end of the W-phase coil W1 whose one end is connected to the neutral point N1 is connected between the switching element W + and the switching element W ⁇ of the W-phase arm.
- the switching elements U + , U ⁇ , V + , V ⁇ , W + , W ⁇ of the inverter 32 are semiconductor elements that are turned on / off by inputting a control signal to their control terminals.
- a free-wheeling diode D for regenerating the back electromotive voltage generated in the motor 16 to the in-vehicle battery B is connected in antiparallel. ing.
- an N-channel MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor
- the switching elements U + , U ⁇ , V + , V ⁇ , W + , W ⁇ used as the switching elements U + , U ⁇ , V + , V ⁇ , W + , W ⁇ .
- the back electromotive voltage generated in the motor 16 is regenerated to the in-vehicle battery B through the positive-side power supply line BL1 with the parasitic diode inevitably formed between the drain and source in the MOSFET manufacturing process as the freewheeling diode D.
- the ON state of the switching elements U + , U ⁇ , V + , V ⁇ , W + , W ⁇ of the inverter 32 refers to an energized state in which a current flows through these switching elements. Further, the OFF state of the switching elements U + , U ⁇ , V + , V ⁇ , W + , W ⁇ of the inverter 32 refers to an interrupted state in which the current flow through these switching elements is interrupted. . The same applies to switching elements such as a solid state relay and a motor relay described later.
- the first controller 30 includes a pre-driver 34 that drives and controls the inverter 32.
- the pre-driver 34 has an upper arm side push-pull circuit for turning on / off the upper arm side switching elements U + , V + , W + of the inverter 32 for each phase arm. Further, the pre-driver 34 has a lower arm side push-pull circuit for turning on and off the lower arm side switching elements U ⁇ , V ⁇ , W ⁇ of the inverter 32 for each phase arm. The output of each push-pull circuit is input to the gate electrode of the corresponding switching element.
- a configuration in which the U-phase arm switching elements U + and U ⁇ are turned on / off in the pre-driver 34 will be described as a representative example.
- the upper arm side push-pull circuit 341H has a high side switching element H + and a low side switching element H ⁇ connected in series with each other.
- Lower-arm push-pull circuit 341L is serially connected high-side switching elements L + and the low side switching element L - a has.
- P-channel MOSFETs are used as the high-side switching elements H + and L +
- N-channel MOSFETs are used as the low-side switching elements H ⁇ and L ⁇ .
- the high-side switching element H + of the drain electrode and the low-side switching element H - are interconnected with the gate electrode of the arm side switching elements U + on the drain electrode and the inverter 32.
- the lower-arm push-pull circuit 341L, the high-side switching element L + of the drain electrode and the low-side switching element L - drain electrode and the lower arm switching elements U of - and the gate electrode are connected to each other.
- the pre-driver 34 includes a booster circuit 342 that is connected to the positive-side power supply line BL1 and boosts the power supply voltage Vb of the in-vehicle battery B to generate a boost voltage that is higher than the power supply voltage Vb of the in-vehicle battery B.
- the booster circuit 342 is a charge pump circuit that includes, for example, a capacitor, a diode, and a switch.
- the source electrode of the high-side switching element H + is connected to the booster circuit 342, and the source voltage of the high-side switching element H + is used as the boosted voltage.
- the source electrode of the low-side switching element H ⁇ of the upper arm side push-pull circuit 341H is connected between the switching element U + and the switching element U ⁇ of the U-phase arm.
- the source electrode of the high side switching element L + is connected to the in-vehicle battery B instead of the booster circuit 342, and the source voltage of the high side switching element L + is connected to the in-vehicle battery B.
- the power supply voltage Vb is used.
- the source electrode of the low-side switching element L ⁇ of the lower arm side push-pull circuit 341L is connected to the source electrode of the lower arm side switching element U ⁇ in the U-phase arm.
- the reason why the source electrode of the high-side switching element H + of the upper arm side push-pull circuit 341H is connected to the booster circuit 342 is as follows. That is, suppose that the control signal output from the upper arm side push-pull circuit 341H to the gate electrode of the upper arm side switching element U + of the inverter 32 is equal to or lower than the power supply voltage Vb of the in-vehicle battery B. At this time, depending on the driving state of the motor 16 increases and the upper arm switching element U + source voltage, the gate of the upper arm switching elements U + - a source voltage upper arm switching elements U + threshold voltage of the This is because it may not be exceeded.
- the high side switching element on the upper arm side push-pull circuit 341H H + and low-side switching elements H - both gate terminals are connected to a drive circuit 343h. Further, both gate terminals of the low-side switching element L ⁇ and the low-side switching element L ⁇ of the lower arm side push-pull circuit 341L are connected to the drive circuit 343L. Further, in the pre-driver 34, the drive circuits 343H and 343L are connected to the logic circuit 344, and the logic circuit 344 controls the drive circuits 343H and 343L based on the motor control signal output from the processor 31. Is generated.
- the drive circuit 343H turns on either the high-side switching element H + or the low-side switching element H ⁇ of the upper arm side push-pull circuit 341H. Accordingly, the upper arm switching elements U + gate electrode from the upper arm side push-pull circuit 341H, the output boosted voltage, or the upper arm switching element U + source voltage of the upper arm switching elements U + ON ⁇ Off operation is controlled.
- the driving circuit 343L in response to a driving signal outputted from the logic circuit 344, the high-side switching element L +, or low-side switching element L of the lower arm side push-pull circuit 341L - to one of the ON state either .
- the lower arm switching elements U from the lower arm side push-pull circuit 341L - the gate electrode of the output power supply voltage Vb or the ground voltage of the battery B is lower-arm switching elements U - the on-off operation Is controlled.
- the first controller 30 has a power supply relay 35, a motor relay 36, and a self-cut-off relay 33d.
- the power relay 35 is provided on the positive-side power supply line BL1 between the in-vehicle battery B and the inverter 32, and is a first solid state that blocks a short-circuit current in a reverse connection state in which the in-vehicle battery B is erroneously connected with the polarity reversed.
- a relay hereinafter referred to as “SSR1”
- SSR2 second solid state relay that stops energization of the first winding set 161 when the first controller 30 is abnormal.
- SSR1 and SSR2 are arranged in this order from inverter 32 toward in-vehicle battery B and are connected in series.
- SSR1 and SSR2 are non-contact relays each having no movable contact portion, and are configured using semiconductor switching elements such as thyristors, triacs, diodes, transistors, and the like.
- N-channel MOSFETs can be used as SSR1 and SSR2.
- the source electrode of SSR1 and the source electrode of SSR2 are connected, the drain electrode of SSR1 is connected to inverter 32 via smoothing circuit 33a, and the drain electrode of SSR2 is connected to the positive electrode of in-vehicle battery B.
- the parasitic diode D1 of the SSR1 is a first diode whose forward direction is from the positive electrode of the in-vehicle battery B to the inverter 32, and the parasitic diode D2 of the SSR2 is a direction from the inverter 32 to the positive electrode of the in-vehicle battery B.
- the SSR1 and SSR2 are turned on.
- the SSR2 is turned off and the SSR1 is kept on. This is because, even when the first controller 30 does not energize the first winding set 161, the external rotational force applied to the motor 16 or the energization from the second controller 40 to the second winding set 162 (FIG. 2). This is because the back electromotive force generated in the motor 16 is regenerated to the in-vehicle battery B through the channel portion of the SSR1 and the parasitic diode D2 of the SSR2.
- the in-vehicle battery B when the in-vehicle battery B is in the reverse connection state and the power supply relay 35 is configured only by the SSR 2, the in-vehicle battery B, the ground, and the switching elements U + , U ⁇ , V + , V ⁇ , W of the inverter 32.
- a closed circuit is formed via the freewheeling diode D at + and W ⁇ and the parasitic diode D2 of SSR2, and a short-circuit current flows.
- SSR1 as the power relay 35 between the SSR2 and the inverter 32, the short circuit current in the reverse connection state of the in-vehicle battery B can be cut off.
- the motor relay 36 cuts off the energization to each phase coil of the motor 16 and is provided between the first winding set 161 and the inverter 32.
- the motor relay 36 in the motor 16 has three relays, a U-phase motor relay MRu, a V-phase motor relay MRv, and a W-phase motor relay MRw.
- U-phase motor relay MRu is provided between neutral point N1 and U-phase coil U1
- V-phase motor relay MRv is provided between neutral point N1 and V-phase coil V1
- W-phase motor relay MRw is It is provided between neutral point N1 and W-phase coil W1.
- the motor relay 36 is a non-contact relay that does not have a movable contact portion, similar to SSR1 and SSR2, and is configured using a semiconductor switching element.
- As the motor relay 36 an N-channel MOSFET can be used.
- the source electrodes of the relays are connected to each other at a neutral point N1. Therefore, the parasitic diode Du of the U-phase motor relay MRu, the parasitic diode Dv of the V-phase motor relay MRv, and the parasitic diode Dw of the W-phase motor relay MRw are respectively arranged at the neutral point N1 side and the neutral point N1.
- a third diode having a forward direction from each to the respective phase coil is formed.
- the self-interrupting relay 33d is configured to connect between the positive-side power supply line BL1 and the power supply circuit 33b in parallel with the ignition switch IGN, and to perform an on / off operation according to a control signal from the processor 31. .
- the self-interrupt relay 33d When the self-interrupt relay 33d is on, the power supply voltage Vb from the in-vehicle battery B is input to the power supply circuit 33b, while when the self-interrupt relay 33d is off, the power supply voltage Vb from the on-vehicle battery B is interrupted.
- the logic circuit 344 in the pre-driver 34 is connected to a processor 31 which is an arithmetic processing unit such as a CPU (Central Processing Unit) or an MPU (Micro-Processing Unit).
- the processor 31 operates using the output voltage from the power supply circuit 33b as a power supply.
- the processor 31 includes a pre-driver control unit 312 and a relay control unit 313 in addition to the abnormality diagnosis unit 311 that executes the above-described abnormality diagnosis function.
- the predriver control unit 312 calculates a motor control signal to be output to the logic circuit 344 of the predriver 34.
- the motor control signal is calculated based on various signals so as to generate a rotational driving force (driving current) corresponding to the target steering assist force calculated in the processor 31 as described above.
- the various signals include an output signal from the amplifier OP of the current detection circuit 33c and an output signal from the magnetic pole position sensor 33e that detects the magnetic pole position of the rotor 16R (see FIG. 2) of the motor 16.
- a PWM (Pulse Width Modulation) signal for modulating the pulse width is illustrated as the motor control signal. With this PWM signal, the duty defining the on / off time ratio of the switching elements U + , U ⁇ , V + , V ⁇ , W + , W ⁇ is changed to change the phase current of the motor 16.
- the relay control unit 313 controls the power supply relay 35, the motor relay 36, and the self shut-off relay 33d. More specifically, the relay control unit 313 outputs a control signal to the control terminals of the switching elements of the power relay 35 and the motor relay 36 via the relay driver 37.
- the relay driver 37 includes a first relay driver 371 that drives SSR 1 of the power relay 35, a second relay driver 372 that drives SSR 2 of the power relay 35, and a third relay driver 373 that drives the motor relay 36. Yes.
- the relay control unit 313 is configured to detect that the ignition switch IGN is turned off. As a result, the relay control unit 313 continues the ON state of the self-interruption relay 33d when detecting the OFF operation of the ignition switch IGN, and continues the power supply from the power supply circuit 33b to the processor 31 and the like. . Then, the relay control unit 313 turns off the self-interrupting relay 33d after a predetermined time Toff has elapsed after detecting the OFF operation of the ignition switch IGN.
- FIG. 4 shows an example of a relay control process executed in the processor 31 when the power supply from the power supply circuit 33b to the processor 31 is started by turning on the ignition switch IGN.
- the ignition switch IGN is turned on at time t0.
- the relay control process of FIG. 4 will be described with reference to the timing chart of FIG.
- step S1 (abbreviated as “S1” in the drawing, the same applies hereinafter), the relay control unit 313 outputs a control signal for turning on the SSR1 to the first relay driver 371 at time t1 in FIG. (SSR1 on control).
- SSR1 on control a control signal for turning on the SSR1 to the first relay driver 371 at time t1 in FIG.
- SSR1 is first turned on among SSR1, SSR2, and motor relay 36 when the ignition switch IGN is turned on. That is, when the SSR 1 is not in the ON state, if the rotor 16R is rotated by an external force before the motor 16 is energized via the inverter 32, the counter electromotive voltage generated in the motor 16 is changed to the channel of the SSR 1. It is not regenerated by the in-vehicle battery B via the unit. For this reason, for example, the back electromotive voltage generated in the motor 16 may damage the pre-driver 34, such as the booster circuit 342 being damaged via the parasitic diode DH of the high-side switching elements H + and L + in the pre-driver 34. There is.
- the relay control unit 313 turns on the SSR 1 as quickly as possible, thereby changing the back electromotive voltage of the motor 16 to the free-wheeling diodes D and SSR 1 of the switching elements U + , V + and W + in the inverter 32.
- Regeneration to the in-vehicle battery B is enabled through the channel section and the parasitic diode D2 of the SSR2. Thereby, the possibility that the pre-driver 34 is damaged is reduced.
- the parasitic diodes Du, Dv, and Dw of the motor relay 36 substantially inhibit the motor 16 from operating as a generator.
- step S2 the relay control unit 313 determines whether or not a predetermined time T1 has elapsed from the ON control of the SSR1.
- the predetermined time T1 is longer than the time from the time t1 when the on-control of the SSR1 is performed to the time t2 when the SSR1 is actually turned on, and the back electromotive force of the motor 16 is connected to the vehicle-mounted battery B via the SSR1. This is an estimated time until the voltage is reduced to a voltage that does not damage the pre-driver 34 due to regeneration.
- the predetermined time T1 is stored in advance in a ROM (Read Only Memory) or the like.
- the voltage of the positive-side feeder line BL1 between the SSR1 and the inverter 32 is The power supply voltage Vb of the in-vehicle battery B is the same.
- step S2 determines in step S2 that the predetermined time T1 has elapsed from the ON control of SSR1 (YES)
- the process proceeds to step S3, while the predetermined time T1 has elapsed from the ON control of SSR1. If it is determined that it has not elapsed (NO), step S2 is performed again.
- step S3 the relay control unit 313 outputs a control signal for turning on the motor relay 36 to the third relay driver 373 at time t3 in FIG. 5 (MR on control). As a result, the motor relay 36 is turned on at time t5 due to a turn-on delay time or the like.
- a closed circuit is formed between the motor 16 and the in-vehicle battery B, starting from the first winding set 161 and returning to the first winding set 161 again.
- This closed circuit includes the parasitic diode D of the upper arm side switching elements U + , V + , W + , the channel portion of SSR1, the parasitic diode D2 of SSR2, the vehicle battery B, the ground and the lower arm side switching elements U ⁇ , V ⁇ . , W ⁇ through the parasitic diode D.
- the current generated by the power generation of the motor 16 includes the freewheeling diode D of the switching elements U + , U ⁇ , V + , V ⁇ , W + , W ⁇ , the parasitic diode D2 of the SSR 2, and the parasitic diodes Du and Dv of the motor relay 36. , Dw continuously. Therefore, heat generation is excessive due to the forward voltage of the freewheeling diode D, the parasitic diode D2, and the parasitic diodes Du, Dv, and Dw, and the switching elements U + , U ⁇ , V + , V ⁇ , W + , W ⁇ , The SSR 2 and the motor relay 36 may be damaged.
- the time t5 when the motor relay 36 is turned on is set to be the following timing after the time t2 when the SSR1 is turned on in order to shorten the time during which the motor 16 substantially operates as a generator. Is done. That is, the time t5 is set at the same time as or close to the timing at which energization of the first winding set 161 is started by the output of the motor control signal from the pre-driver control unit 312 (time t pwm in FIG. 5). Is set.
- step S4 the relay control unit 313 outputs a control signal for turning on the SSR2 to the second relay driver 372 at time t4 in FIG. 5 (ON control of the SSR2).
- SSR2 is turned on at time t6 due to a turn-on delay time or the like.
- the power supply voltage Vb of the in-vehicle battery B is applied to the inverter 32 (that is, the drain electrodes of the switching elements U + , V + , W + ).
- the time t4 when the relay control unit 313 outputs a control signal for turning on the SSR 2 will be described.
- the abnormality diagnosis unit 311 of the processor 31 diagnoses whether or not an abnormality has occurred in the first energization system. Execution of the diagnostic function is started. If the upper arm side switching element (for example, U + ) and the lower arm side switching element (for example, U ⁇ ) of the same phase are short-circuited and the SSR 2 is turned on, an excessive current is generated from the in-vehicle battery B. There is a risk of flowing to the ground via the first energization system.
- the pre-driver control unit 312 After the relay control unit 313 turns on the SSR 1, the motor relay 36, and the SSR 2 in steps S 1 to S 4, the pre-driver control unit 312 outputs a motor control signal to the pre-driver 34, so that the first motor 16 The energization to the winding set 161 is controlled.
- the motor control signal is, for example, a U-phase PWM signal as a U-phase motor control signal, a V-phase PWM signal as a V-phase motor control signal, and a W-phase PWM signal as a W-phase motor control signal. It is.
- step S5 the relay control unit 313 determines whether or not the abnormality diagnosis flag F indicates an abnormality.
- the abnormality diagnosis flag F is a state flag stored as the state of the first energized system as a result of diagnosis when the abnormality diagnosis unit 311 of the processor 31 executes the abnormality diagnosis function at a predetermined timing. Memory). For example, when the abnormality diagnosis unit 311 diagnoses that an abnormality has occurred in the first energized system, the value of the abnormality diagnosis flag F is set to 1, while when the first energized system is diagnosed as normal. Sets the value of the abnormality diagnosis flag F to zero.
- the relay control unit 313 determines that the abnormality diagnosis flag F is a value indicating abnormality (for example, 1) (YES)
- the process proceeds to step S6.
- the relay control unit 313 determines that the abnormality diagnosis flag F is a value indicating normality (for example, zero) (NO) (NO) (NO) (NO)
- step S5 When it is determined in step S5 that the abnormality diagnosis flag F is a value indicating abnormality, the pre-driver control unit 312 sends a motor control signal (U-phase PWM signal, V-phase PWM signal, W) to the pre-driver 34. The output of the phase PWM signal) is stopped. As a result, the switching elements U + , U ⁇ , V + , V ⁇ , W + , W ⁇ of the inverter 32 are turned off. The same applies to the case where it is determined in the later-described step that the ignition switch IGN is turned off.
- step S6 the relay control unit 313 outputs a control signal (OFF command) for turning off the SSR2 to the second relay driver 372 at time t7 in FIG. 5 (SSR2 off control).
- OFF command a control signal for turning off the SSR2 to the second relay driver 372 at time t7 in FIG. 5
- the SSR 2 is turned off at time t9 due to a delay time of turn-off or the like.
- the energization by the first energization system diagnosed as abnormal by the abnormality diagnosis unit 311 is stopped as quickly as possible, and an excessive current causes the inverter 32 to be turned off from the in-vehicle battery B. The flow to the ground is suppressed.
- step S7 the relay control unit 313 outputs a control signal (off command) for turning off the motor relay 36 to the third relay driver 373 at time t8 in FIG. 5 (MR off control).
- a control signal off command
- the motor relay 36 is turned off at time t10 due to a turn-off delay time or the like.
- the motor relay 36 When the motor relay 36 is in the on state, the above-described closed circuit is formed between the motor 16 and the in-vehicle battery B.
- the motor 16 When the rotor 16R of the motor 16 is rotated by an external force, the motor 16 substantially operates as a generator. To do.
- the current generated by the power generation of the motor 16 includes the freewheeling diode D of the switching elements U + , U ⁇ , V + , V ⁇ , W + , W ⁇ , the parasitic diode D2 of the SSR 2, and the parasitic diodes Du and Dv of the motor relay 36. , Dw continuously.
- the motor relay 36 After time t10, the motor relay 36 is turned off, but the SSR 1 is not yet turned off. For this reason, even if the rotor 16R is rotated by an external force, the back electromotive force voltage generated in the motor 16 is caused by the free-wheeling diode D of the switching elements U + , V + , W + , the channel portion of the SSR1 and the parasitic diode D2 of the SSR2. Through the vehicle battery B. Thereby, the possibility that the pre-driver 34 is damaged is reduced.
- the motor relay 36 when the motor relay 36 is in an off state after time t10, even if the rotor 16R is rotated by an external force, the parasitic of the motor relay 36 is the same as before the time t5 when the motor relay 36 is turned on.
- the diodes Du, Dv, and Dw substantially prevent the motor 16 from operating as a generator.
- the relay control unit 313 determines whether or not a predetermined time T2 has elapsed since the SSR2 OFF control.
- the predetermined time T2 is a time longer than the time from the time t7 when the SSR2 is turned off to the time t9 when the SSR2 is actually turned off.
- the predetermined time T2 is a time from time t7 when the SSR2 is turned off to time t11 when the back electromotive force of the motor 16 is estimated to decrease to a level at which the predriver 34 is not damaged.
- the predetermined time T2 is stored in advance in a ROM (Read Only Memory).
- the potential of the positive-side feeder line BL1 between the SSR1 and the inverter 32 is the power supply voltage Vb of the in-vehicle battery B.
- the power supplied to the first winding set 161 via the first controller 30 is cut off and the second controller 40 is used to cut off the power. It is assumed that power is supplied to the two-winding set 162 to generate a steering assist force. This means that the rotor 16R is continuously rotated. Even in this case, it is necessary to regenerate the back electromotive voltage generated in the motor 16 to the in-vehicle battery B through the channel portion of the SSR1.
- step S8 when executing step S8, if the value of the abnormality diagnosis flag F is a value indicating abnormality (for example, 1), it is determined whether or not a predetermined time T2 has elapsed since the ignition switch IGN was turned off. You may judge.
- a value indicating abnormality for example, 1
- step S8 when it is determined that the predetermined time T2 has elapsed (YES), the relay control unit 313 advances the process to step S9, whereas when it is determined that the predetermined time T2 has not elapsed. (NO), Step S8 is performed again.
- step S9 the relay control unit 313 outputs a control signal (OFF command) for turning off the SSR1 to the first relay driver 371 at time t11 in FIG. 5 (OFF control of the SSR1).
- OFF command a control signal for turning off the SSR1 to the first relay driver 371 at time t11 in FIG. 5
- SSR1 is turned off at time t12 due to a delay time of turn-off or the like.
- step S10 the relay control unit 313 determines whether or not the ignition switch IGN is turned off. If the relay control unit 313 determines that the ignition switch IGN is turned off (YES), the process proceeds to step S6. Then, the relay control unit 313 keeps the power supply from the power supply circuit 33b to the processor 31 and the pre-driver 34 by turning on the self-interruption relay 33d until a predetermined time Toff has elapsed after the ignition switch IGN is turned off. .
- the predetermined time Toff is a time sufficient for executing steps S6 to S9.
- the relay control unit 313 determines that the ignition switch IGN is not turned off (NO)
- the relay control unit 313 returns to step S5.
- the timing chart after determining that the ignition switch IGN is turned off is substantially the same as that after the occurrence of an abnormality in the timing chart of FIG.
- the SSR 2 when the power supply from the in-vehicle battery B to the inverter 32 is shut off, the SSR 2 is turned off while the SSR 1 is turned on. This is because even if a counter electromotive voltage is generated in the motor 16 due to the rotation of the rotor 16R caused by an external force, the current generated thereby can be regenerated to the in-vehicle battery B. Then, before the SSR 1 is turned off, the motor relay 36 is turned off. Thereby, the closed circuit formed between the motor 16 and the vehicle-mounted battery B is interrupted, and the time during which the motor 16 operates substantially as a generator is shortened.
- the current generated by the power generation of the motor 16 does not continuously flow through the parasitic diode D2 of the SSR 2 and the parasitic diode D of the switching elements U + , U ⁇ , V + , V ⁇ , W + , W ⁇ in the inverter 32. For this reason, it becomes difficult to affect the durability of the semiconductor switching elements of the SSR 1 and the inverter 32, and consequently the durability of the motor system 1 is improved.
- the motor brake 36 is turned off, and the closed circuit formed between the motor 16 and the in-vehicle battery B is cut off, so that the electric brake that inhibits the rotation of the rotor 16R does not operate. For this reason, when the power supply to the second winding set 162 is supplied and the steering assist force is generated while cutting off the power supplied to the first winding set 161 when the first energization system is abnormal, It is possible to suppress a decrease in assisting force and, in turn, a decrease in running stability.
- the SSR 1 is maintained in the on state until the predetermined time T2 elapses from the off control of the SSR 2 or from the off operation of the ignition switch IGN. For this reason, the counter electromotive voltage generated in the motor 16 is regenerated to the in-vehicle battery B via the channel portion of the SSR1 and the parasitic diode D2 of the SSR2. Therefore, the possibility that the back electromotive voltage generated in the motor 16 damages the pre-driver 34 can be reduced.
- FIG. 6 shows an example of a motor system according to the second embodiment.
- the first energization system includes the first winding set 161 and the first controller 30A, similarly to the motor system 1 of the first embodiment.
- the first controller 30A includes, as relay drivers 37A, a first relay driver 371 that drives the SSR1 of the power supply relay 35, and a second relay driver 372A that drives the SSR2 of the power supply relay 35 and the motor relay 36. .
- the common use of the relay driver that drives the SSR2 and the motor relay 36 is that the timing at which the SSR2 and the motor relay 36 are actually turned on / off even if the on / off control of the SSR2 and the motor relay 36 is performed simultaneously, This is effective in the case shown in FIG.
- FIG. 7 shows a different part from the relay control process according to the first embodiment of FIG.
- the relay control unit 313A of the processor 31A executes step S3A of FIG. 7A when the relay control unit 313A determines in step S2 that the predetermined time T1 has elapsed from the ON control of the SSR1. That is, in step S3A, relay control unit 313A outputs a control signal for turning on SSR2 and motor relay 36 to second relay driver 372A (SSR2 and MR on control). And relay control part 313A advances a process to step S5.
- Step S6A when the relay control unit 313A determines in step S5 that the abnormality diagnosis flag F is a value indicating abnormality, or in step S10, determines that the ignition switch IGN has been turned off, FIG. ) Step S6A. That is, in step 6A, relay control unit 313A outputs a control signal to turn on SSR2 and motor relay 36 to second relay driver 372A (SSR2 and MR on control). And relay control part 313A advances a process to step S7.
- the relay driver that drives the SSR2 of the power relay 35 and the motor relay 36 is shared by the second relay driver 372A. Therefore, according to the motor system 1A, not only the same effect as that of the first embodiment is achieved, but also the control signal output from the relay control unit 313A is reduced to simplify the control process, and the first controller 30A The board mounting area can be reduced.
- FIG. 8 shows an example of a motor system according to the third embodiment.
- the first energization system includes the first winding set 161 and the first controller 30B.
- the motor relay 36B is provided between the first winding set 161 and the inverter 32, unlike the motor relay 36 of the first embodiment.
- Motor relay 36B has three relays: U-phase motor relay MRuB, V-phase motor relay MRvB, and W-phase motor relay MRwB.
- U-phase motor relay MRuB is provided between U-phase coil U1 and inverter 32
- V-phase motor relay MRvB is provided between V-phase coil V1 and inverter 32
- W-phase motor relay MRwB is W-phase coil W1. And the inverter 32.
- a counter electromotive voltage is generated in each phase coil of the first winding set 161.
- the counter electromotive voltage of the U phase coil U1 is more positive on the inverter 32 side than the U phase coil U1
- the counter electromotive voltage of the V phase coil V1 is more negative on the inverter 32 side than the V phase coil V
- the W phase coil W1. Is negative on the inverter 32 side than the W-phase coil W1.
- the current from the ground toward the neutral point N1 via the parasitic diode D and the V-phase coil V1 due to the counter electromotive voltage is blocked by the parasitic diode DvB.
- the current from the ground toward the neutral point N1 via the parasitic diode D and the W-phase coil W1 is blocked by the parasitic diode DwB due to the back electromotive voltage.
- the motor 16 when the motor relay 36B is in the off state, the motor 16 is substantially driven by the parasitic diodes DuB, DvB, DwB of the motor relay 36B. It is impeded to operate as a generator.
- the pre-driver control unit 312 sends a motor control signal (U-phase PWM signal, V-phase PWM to the pre-driver 34 in a predetermined case. Signal, W-phase PWM signal) is stopped.
- the predetermined case is a case where it is determined in step S5 that the abnormality diagnosis flag F is a value indicating abnormality, or a case where it is determined in step S10 that the ignition switch IGN is turned off.
- the pre-driver control unit 312 can perform the following from the time when step S5 or step S10 is executed until the motor relay 36 is turned off.
- the pre-driver control unit 312 controls the pre-driver 34 so that the back electromotive force generated by the motor 16 does not exceed the supply power supplied from the in-vehicle battery B to the first winding set 161 of the motor 16.
- a motor control signal can be output. Thereby, it can suppress that the electric current by the counter electromotive force of the motor 16 flows into the pre-driver 34.
- the pre-driver control unit 312 is configured so that the current supplied from the in-vehicle battery B to the first winding set 161 of the motor 16 becomes zero amperes based on the output signal from the amplifier OP of the current detection circuit 33c.
- a motor control signal can be output to the pre-driver 34.
- the motor relay 36 when the motor relay 36 is turned on at time t3 in step S3, the motor relay 36 is actually turned on at time t5, and when SSR2 is turned on at time t4 in step S4. It is assumed that the device is actually turned on at time t6. However, considering the influence of the back electromotive voltage during the time when the motor 16 can operate substantially as a generator after the motor relay 36 is turned on, and the timing when the first diagnosis by the abnormality diagnosis unit 311 is completed. The following may be used. That is, the timing at which the motor relay 36 and the SSR 2 are turned on may be made simultaneously, or the order may be reversed.
- the turn-on delay time of the semiconductor switching elements of the motor relay 36 and SSR2, etc. may be performed. That is, the timing for performing the ON control of the motor relay 36 and the SSR 2 may be made simultaneously, or the order may be reversed.
- the motor relay 36 is actually turned off at time t9 when the SSR2 is turned off at time t9.
- time t10 it is assumed that the device is actually turned off.
- the timing at which the motor relay 36 and the SSR 2 are turned off may be made simultaneously, or the order may be reversed.
- the turn-off delay time of the semiconductor switching elements of the motor relay 36 and SSR2, and the like may be performed. That is, the timing for performing the off control of the motor relay 36 and the SSR 2 may be made simultaneously, or the order may be reversed.
- the abnormality diagnosis unit 311 When the abnormality diagnosis unit 311 is configured to be able to identify an abnormality occurrence location in the first energization system from the inverter 32, the pre-driver 34, and the motor 16 (first winding set 161), the following is performed. can do. That is, the abnormality diagnosis unit 311 can set the timing at which the SSR1, SSR2, and the motor relay 36 are turned on or off according to the location where the abnormality has occurred.
- the abnormality diagnosis unit 311 diagnoses that an abnormality has occurred in the inverter 32, as described above, the motor relay 36 is turned off in step S7, and then the SSR1 is turned off in step S9. .
- the in-vehicle battery B causes the upper arm side switching elements U + , V + , W + , the first winding set 161 and the lower arm side switching elements U ⁇ , V ⁇ , W to be connected. It is possible to improve safety by interrupting the through current that may flow to the ground through-.
- the motor relay 36 is turned off prior to SSR1 and SSR2. In a situation where the motor relay 36 can be reliably turned off, safety can be improved by turning the motor relay 36 off before SSR2.
- the timing at which the motor relay 36 is turned on in step S3 is determined by whether or not a predetermined time T1 has elapsed since the SSR1 was turned on (step S2). Instead, the timing at which the motor relay 36 is turned on can be determined according to the back electromotive voltage generated by the motor 16.
- the counter electromotive voltage generated by the motor 16 a detected value of the voltage in the positive-side power supply line BL1 between the inverter 32 and the SSR2 can be used.
- the rotational speed of the rotor 16R can be calculated from the output signal of the magnetic pole position sensor 33e, and the estimated counter electromotive voltage value estimated based on this rotational speed can be used.
- the timing at which the SSR1 is turned off in step S9 can be determined according to the back electromotive voltage generated by the motor 16 instead of determining whether or not the predetermined time T2 has elapsed in step S8.
- the motor systems 1, 1A and 1B applied to the electric power steering apparatus have been described as having two energization systems.
- the present invention is not limited to this, and one or three or more motor systems are used. You may have an electricity supply system.
- the motor systems 1, 1A, 1B do not exclude application to devices other than the electric power steering device.
- SYMBOLS 1 ... Motor system, 16 ... Motor, 161 ... 1st winding group, 31, 31A ... Processor, 311 ... Abnormality diagnosis part, 312 ... Pre-driver control part, 313, 313A ... Relay control part, 32 ... Inverter, 34 ... Pre-driver, 36, 36B ... motor relay, B ... vehicle battery, D1 ... first diode, D2 ... second diode, Du, Dv, Dw ... third diode, N1 ... neutral point, SSR1 ... first Solid State Relay, SSR2 ... Second Solid State Relay
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Abstract
Description
[第1実施形態]
図1は、本発明の第1実施形態に係るモータシステムを適用した電動パワーステアリング装置の一例を示す。
車両100の電動パワーステアリング装置10は、ステアリングホイール11と、ステアリングシャフト12と、ピニオンシャフト13と、ピニオンギア14と、ラックギア15と、を備えている。ステアリングホイール11には運転者の操舵操作力が入力され、ステアリングホイール11はステアリングシャフト12に接続されている。ピニオンシャフト13は、第1の自在継手J1、中間シャフトMS、第2の自在継手J2およびステアリングシャフト12を介してステアリングホイール11に接続されている。ピニオンギア14はピニオンシャフト13の先端に接続され、ラックギア15はピニオンギア14と噛合してピニオンギア14の回転運動を直線運動に変換する。
図2は、モータシステム1の内部構成の一例を示す。モータ16は、3相ブラシレスモータであり、ステータ(図示省略)と、ロータ16Rと、を有している。ステータは、U相コイルU1、V相コイルV1、W相コイルW1の3相巻線からなる第1巻線組(複数のステータコイル)161、および、U相コイルU2、V相コイルV2、W相コイルW3の3相巻線からなる第2巻線組162の互いに独立した2組の巻線組を含んでいる。ロータ16Rは、ステータの中央部に回転可能に備えられた永久磁石回転子である。第1巻線組161および第2巻線組162は、互いに絶縁された状態でステータに巻き回され、磁気回路を共有している。
図3は、モータシステム1における第1通電系統の構成例を示す回路図である。第1通電系統は、前述のように、第1コントローラ30および第1巻線組161を含んでいる。第1コントローラ30は、モータ16の第1巻線組161への通電を制御するインバータ32を有している。インバータ32は、正極側給電線BL1を介して車載バッテリBの正極と接続されて電力供給を受け、負極側給電線BL2を介して車載バッテリBの負極と接続されるとともに、グランド接続がなされている。
図4は、イグニッションスイッチIGNのオン操作により、電源回路33bからプロセッサ31に対して電源供給が開始されたことを契機として、プロセッサ31において実行されるリレー制御処理の一例を示す。なお、図5の例示的なタイミングチャートにおいて、イグニッションスイッチIGNのオン操作は時刻t0で行われる。以下、図5のタイミングチャートを参照しつつ、図4のリレー制御処理について説明する。
次に、本発明の第2実施形態に係るモータシステムのうち、第1実施形態と異なる構成について説明する。なお、第1実施形態と同一構成については、同一符号を付すことでその説明を省略又は簡潔にする。以下の実施形態においても同様である。
次に、本発明の第3実施形態に係るモータシステムのうち、第1実施形態と異なる構成について説明する。図8は、第3実施形態に係るモータシステムの一例を示す。第3実施形態に係るモータシステム1Bは、第1実施形態のモータシステム1と同様に、第1通電系統が、第1巻線組161および第1コントローラ30Bを含んでいる。
Claims (11)
- 複数のステータコイルを有するモータと、
前記複数のステータコイルへの通電を制御するインバータと、
前記インバータを駆動制御するプリドライバと、
前記インバータに電力を供給するバッテリと前記インバータとの間で、前記インバータ側から順に配置されて直列接続された第1のソリッドステートリレーおよび第2のソリッドステートリレーであって、前記第1のソリッドステートリレーは、第1のダイオードを有し、前記第1のダイオードは、前記バッテリから前記インバータへ向かう方向を順方向とし、前記第2のソリッドステートリレーは、第2のダイオードを有し、前記第2のダイオードは、前記インバータから前記バッテリへ向かう方向と順方向とする、第1のソリッドステートリレーおよび第2のソリッドステートリレーと、
前記複数のステータコイルの夫々に設けられ、前記複数のステータコイルの通電を遮断する複数のモータリレーと、
プロセッサであって、前記プロセッサは、前記プリドライバを駆動制御するプリドライバ制御部と、前記第1のソリッドステートリレー、前記第2のソリッドステートリレー、および前記モータリレーを制御するリレー制御部と、を備え、前記リレー制御部は、前記バッテリから前記インバータへの電力の供給を遮断するとき、前記モータリレーをオフ状態にした後、前記第1のソリッドステートリレーをオフ状態にするリレー制御部であるプロセッサと、
を有することを特徴とするモータシステム。 - 請求項1に記載のモータシステムにおいて、前記リレー制御部は、前記バッテリから前記インバータへの電力の供給を遮断するとき、前記第2のソリッドステートリレー、前記モータリレー、前記第1のソリッドステートリレーの順にオフ状態にし、または前記第2のソリッドステートリレーと前記モータリレーを同時にオフ状態にした後、前記第1のソリッドステートリレーをオフ状態にすることを特徴とするモータシステム。
- 請求項2に記載のモータシステムにおいて、前記リレー制御部は、前記バッテリから前記インバータへの電力の供給を遮断するとき、前記第2のソリッドステートリレーと前記モータリレーに対し、同時にオフ指令を出力することを特徴とするモータシステム。
- 請求項2に記載のモータシステムにおいて、前記リレー制御部は、前記バッテリから前記インバータへの電力の供給を開始するとき、前記第1のソリッドステートリレーをオン状態にした後、前記モータリレーをオン状態にすることを特徴とするモータシステム。
- 請求項4に記載のモータシステムにおいて、前記リレー制御部は、前記バッテリから前記インバータへの電力の供給を開始するとき、前記第1のソリッドステートリレー、前記モータリレー、前記第2のソリッドステートリレーの順にオン状態にし、または前記第1のソリッドステートリレーをオン状態にした後、前記モータリレーと前記第2のソリッドステートリレーをオン状態にすることを特徴とするモータシステム。
- 請求項1に記載のモータシステムにおいて、前記複数のステータコイル同士は、中性点においてスター結線されており、
前記複数のモータリレーの全ては、半導体スイッチング素子であって、
前記複数のモータリレーの夫々は、第3のダイオードを有し、
前記第3のダイオードの夫々は、アノードが前記中性点側に配置されていることを特徴とするモータシステム。 - 請求項1に記載のモータシステムにおいて、前記プロセッサは、前記モータ、前記インバータ、または前記プリドライバにおける異常の有無を診断する異常診断部を備え、
前記リレー制御部は、前記異常診断部が前記モータ、前記インバータ、または前記プリドライバに異常が発生したと診断したとき、前記モータリレーをオフ状態にした後、前記第1のソリッドステートリレーをオフ状態にすることを特徴とするモータシステム。 - 請求項7に記載のモータシステムにおいて、前記異常診断部は、前記インバータに異常が発生したと診断したとき、前記モータリレーをオフ状態にした後、前記第1のソリッドステートリレーをオフ状態にすることを特徴とするモータシステム。
- 請求項8に記載のモータシステムにおいて、前記異常診断部は、前記インバータ以外に異常が発生したと診断したとき、前記第1のソリッドステートリレーおよび前記第2のソリッドステートリレーよりも先に前記モータリレーをオフ状態にすることを特徴とするモータシステム。
- 請求項1に記載のモータシステムにおいて、前記プリドライバ制御部は、前記バッテリから前記インバータへの電力の供給を遮断するときに、前記リレー制御部が前記モータリレーをオフ状態にするまでの間、前記モータで発生する逆起電力が前記バッテリから前記複数のステータコイルへ供給される供給電力を上回らないように、前記プリドライバを駆動制御することを特徴とするモータシステム。
- 請求項10に記載のモータシステムにおいて、前記プリドライバ制御部は、前記バッテリから前記インバータへの電力の供給を遮断するとき、前記リレー制御部が前記モータリレーをオフ状態にするまでの間、前記複数のステータに流れる電流が0アンペアとなるように前記プリドライバを駆動制御することを特徴とするモータシステム。
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020090279A1 (ja) * | 2018-11-02 | 2020-05-07 | 日立オートモティブシステムズ株式会社 | 駆動システム及び制御方法 |
JP2020108327A (ja) * | 2018-12-27 | 2020-07-09 | 株式会社デンソー | 制御装置 |
WO2020162112A1 (ja) * | 2019-02-05 | 2020-08-13 | 日立オートモティブシステムズ株式会社 | 車両搭載機器用モータアクチュエータ |
WO2021059436A1 (ja) * | 2019-09-26 | 2021-04-01 | 三菱電機株式会社 | 交流回転機装置 |
WO2024095355A1 (ja) * | 2022-11-01 | 2024-05-10 | 三菱電機株式会社 | 電動パワーステアリング装置 |
WO2024134750A1 (ja) * | 2022-12-20 | 2024-06-27 | 三菱電機株式会社 | 電子制御装置および電動パワーステアリング装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018173469A1 (ja) * | 2017-03-23 | 2018-09-27 | 日立オートモティブシステムズ株式会社 | モータシステム |
JP7284671B2 (ja) * | 2019-09-12 | 2023-05-31 | 日立Astemo株式会社 | 巻線切替装置、並びにそれを用いる回転電機駆動システム |
JP7280796B2 (ja) * | 2019-10-04 | 2023-05-24 | 日立Astemo株式会社 | モータ駆動装置 |
US11183960B1 (en) * | 2020-08-27 | 2021-11-23 | Honeywell International Inc. | Fail-safe motor control architecture for open-end winding motors |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013183462A (ja) * | 2012-02-29 | 2013-09-12 | Denso Corp | 電動機駆動装置 |
JP2014045576A (ja) * | 2012-08-27 | 2014-03-13 | Denso Corp | 電動機駆動装置、および、これを用いた電動パワーステアリング装置 |
WO2014136166A1 (ja) * | 2013-03-08 | 2014-09-12 | 日本精工株式会社 | モータ制御装置、これを使用した電動パワーステアリング装置及び車両 |
WO2015019652A1 (ja) * | 2013-08-05 | 2015-02-12 | 日立オートモティブシステムズ株式会社 | 電動モータの駆動制御装置 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011244611A (ja) * | 2010-05-19 | 2011-12-01 | Omron Automotive Electronics Co Ltd | モータ駆動装置 |
JP5594312B2 (ja) | 2012-04-02 | 2014-09-24 | 株式会社デンソー | モータ駆動装置 |
JP5660090B2 (ja) * | 2012-08-27 | 2015-01-28 | 株式会社デンソー | 電動機駆動装置、および、これを用いた電動パワーステアリング装置 |
JP5569626B1 (ja) * | 2013-06-17 | 2014-08-13 | 日本精工株式会社 | モータ制御装置、これを使用した電動パワーステアリング装置及び車両 |
JP6286149B2 (ja) * | 2013-08-02 | 2018-02-28 | 日立オートモティブシステムズ株式会社 | 電力変換装置、電動パワーステアリングシステム、電気自動車、電子制御スロットル、電動ブレーキ |
JP6302727B2 (ja) * | 2014-04-10 | 2018-03-28 | 日立オートモティブシステムズ株式会社 | 電動モータの制御装置 |
WO2016135840A1 (ja) * | 2015-02-24 | 2016-09-01 | 三菱電機株式会社 | 電動駆動装置、及び電動パワーステアリング装置 |
JP2016208585A (ja) * | 2015-04-16 | 2016-12-08 | 株式会社ジェイテクト | モータ制御装置および電動パワーステアリング装置 |
JP6436012B2 (ja) * | 2015-08-03 | 2018-12-12 | トヨタ自動車株式会社 | 車両用電動モータ制御装置 |
JP6874758B2 (ja) * | 2016-03-04 | 2021-05-19 | 日本電産株式会社 | 電力変換装置、モータ駆動ユニット、電動パワーステアリング装置およびリレーモジュール |
CN108883787B (zh) * | 2016-04-08 | 2021-03-26 | 三菱电机株式会社 | 电动助力转向装置 |
JP6562871B2 (ja) * | 2016-05-12 | 2019-08-21 | オムロンオートモーティブエレクトロニクス株式会社 | モータ制御装置 |
DE112017004959T5 (de) * | 2016-09-30 | 2019-06-13 | Nidec Corporation | Leistungsumwandlungsvorrichtung, Motoransteuereinheit und elektrische Servolenkungsvorrichtung |
US20190267926A1 (en) * | 2016-11-10 | 2019-08-29 | Nsk Ltd. | Electric power steering apparatus |
JP6743687B2 (ja) * | 2016-12-26 | 2020-08-19 | 日本電産株式会社 | 電力変換装置、モータ駆動ユニット、および電動パワーステアリング装置 |
JP7014183B2 (ja) * | 2017-01-20 | 2022-02-01 | 日本電産株式会社 | 電力変換装置、モータ駆動ユニットおよび電動パワーステアリング装置 |
WO2018173469A1 (ja) * | 2017-03-23 | 2018-09-27 | 日立オートモティブシステムズ株式会社 | モータシステム |
US10864937B2 (en) * | 2017-03-30 | 2020-12-15 | Mitsubishi Electric Corporation | Electric power steering apparatus |
-
2018
- 2018-01-25 WO PCT/JP2018/002234 patent/WO2018173469A1/ja active Application Filing
- 2018-01-25 KR KR1020197026155A patent/KR20190111118A/ko not_active Application Discontinuation
- 2018-01-25 JP JP2019507392A patent/JP6709325B2/ja active Active
- 2018-01-25 DE DE112018001525.4T patent/DE112018001525T5/de active Pending
- 2018-01-25 US US16/490,741 patent/US11283389B2/en active Active
- 2018-01-25 CN CN201880011172.5A patent/CN110268622B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013183462A (ja) * | 2012-02-29 | 2013-09-12 | Denso Corp | 電動機駆動装置 |
JP2014045576A (ja) * | 2012-08-27 | 2014-03-13 | Denso Corp | 電動機駆動装置、および、これを用いた電動パワーステアリング装置 |
WO2014136166A1 (ja) * | 2013-03-08 | 2014-09-12 | 日本精工株式会社 | モータ制御装置、これを使用した電動パワーステアリング装置及び車両 |
WO2015019652A1 (ja) * | 2013-08-05 | 2015-02-12 | 日立オートモティブシステムズ株式会社 | 電動モータの駆動制御装置 |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2020090279A1 (ja) * | 2018-11-02 | 2021-09-24 | 日立Astemo株式会社 | 駆動システム及び制御方法 |
WO2020090279A1 (ja) * | 2018-11-02 | 2020-05-07 | 日立オートモティブシステムズ株式会社 | 駆動システム及び制御方法 |
JP7182641B2 (ja) | 2018-11-02 | 2022-12-02 | 日立Astemo株式会社 | 駆動システム及び制御方法 |
JP2020108327A (ja) * | 2018-12-27 | 2020-07-09 | 株式会社デンソー | 制御装置 |
JP7346993B2 (ja) | 2018-12-27 | 2023-09-20 | 株式会社デンソー | 制御装置 |
JP7202204B2 (ja) | 2019-02-05 | 2023-01-11 | 日立Astemo株式会社 | 車両搭載機器用モータアクチュエータ |
JP2020127290A (ja) * | 2019-02-05 | 2020-08-20 | 日立オートモティブシステムズ株式会社 | 車両搭載機器用モータアクチュエータ |
US11652433B2 (en) | 2019-02-05 | 2023-05-16 | Hitachi Astemo, Ltd. | Motor actuator for on-vehicle equipment |
WO2020162112A1 (ja) * | 2019-02-05 | 2020-08-13 | 日立オートモティブシステムズ株式会社 | 車両搭載機器用モータアクチュエータ |
JPWO2021059436A1 (ja) * | 2019-09-26 | 2021-11-25 | 三菱電機株式会社 | 交流回転機装置 |
JP7101902B2 (ja) | 2019-09-26 | 2022-07-15 | 三菱電機株式会社 | 交流回転機装置 |
WO2021059436A1 (ja) * | 2019-09-26 | 2021-04-01 | 三菱電機株式会社 | 交流回転機装置 |
WO2024095355A1 (ja) * | 2022-11-01 | 2024-05-10 | 三菱電機株式会社 | 電動パワーステアリング装置 |
WO2024134750A1 (ja) * | 2022-12-20 | 2024-06-27 | 三菱電機株式会社 | 電子制御装置および電動パワーステアリング装置 |
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