CN108988621A - Power inverter - Google Patents
Power inverter Download PDFInfo
- Publication number
- CN108988621A CN108988621A CN201810563180.2A CN201810563180A CN108988621A CN 108988621 A CN108988621 A CN 108988621A CN 201810563180 A CN201810563180 A CN 201810563180A CN 108988621 A CN108988621 A CN 108988621A
- Authority
- CN
- China
- Prior art keywords
- switch element
- phase
- power inverter
- branch
- protective switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- 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
- H02H7/10—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 converters; for rectifiers
- H02H7/12—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 converters; for rectifiers for static converters or rectifiers
- H02H7/122—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 converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
- H02H7/1225—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 converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to internal faults, e.g. shoot-through
-
- 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
-
- 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
-
- 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
- H02P29/0241—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an overvoltage
-
- 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
- H02P29/027—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an over-current
-
- 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
- H02H7/10—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 converters; for rectifiers
- H02H7/12—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 converters; for rectifiers for static converters or rectifiers
- H02H7/122—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 converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
- H02H7/1227—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 converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to abnormalities in the output circuit, e.g. short circuit
-
- 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
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/008—Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Power inverter includes branch, protective switch element and control unit.Branch includes multiple switch element, which is connected in series between plus end and negative terminal.Protective switch element is connected in series to the branch between plus end and negative terminal.Protective switch element has rated current more higher than switch element.When short circuit has occurred for the circuit for including switch element, control unit disconnects protective switch element.
Description
Technical field
This disclosure relates to power inverter.
Background technique
As described in WO2011/129263, it is known to a kind of inverter circuit for being made of power switch component it is short
Road guard method.
As described above, the inverter circuit in WO2011/129263 is made of power switch component.Power switch component
Rated current is short circuit current or higher electric current.Therefore, even if short circuit and short circuit electricity occur in certain power switch components
Stream therefore temporal currency, can also execute short-circuit protection by cutting off the grid in another power switch component.However, due to
The rated current of all power switch components of inverter circuit (power inverter) be short circuit current or higher electric current, because
The increase of this physical size becomes a problem.
Summary of the invention
Accordingly, it is desired to provide a kind of increased power inverter of inhibition physical size.
The exemplary embodiment of the disclosure provides a kind of power inverter, comprising: branch, the branch include that series connection connects
Connect the multiple switch element between plus end and negative terminal；Protective switch element, the protective switch element are connected in series to just
Branch between terminal and negative terminal, and there is rated current more higher than switch element；And control unit, when including opening
When short circuit has occurred for the circuit of pass element, which disconnect protective switch element.
As a result, protective switch element remains off when short circuit occurs in switch element.It therefore, there is no need to
Remain off other switch elements.Whereby, it can be held in the case where not increasing the rated current of multiple switch element
Row short-circuit protection.Therefore, compared with increasing the structure of rated current of all switch elements, the physical size of power inverter
Increase is inhibited.
Protective switch element is connected in series to branch.Therefore, it when short circuit occurs in switch element, circulates during short circuit
Current direction protective switch element.However, as described above, protective switch element has specified electricity more higher than switch element
Stream.Therefore, it is inhibited as caused by the current electrifying to circulate during short circuit to the damage of protective switch.Therefore, as described above
Unstable operation of the protective switch element during switching element short-circuits be inhibited.
The appended drawing reference in bracket is assigned to element cited in claims.Appended drawing reference in bracket is for simple
It indicates the corresponding relationship with the element according to embodiment, and is not necessarily indicative to according to the element described in embodiment itself.It is right
The statement of appended drawing reference in bracket will not unnecessarily reduce the range of claims.
Detailed description of the invention
In the accompanying drawings:
Fig. 1 is the integrally-built block diagram of power inverter according to first embodiment；
Fig. 2 is the integrally-built top view of rotor inverter；
Fig. 3 be short circuit during electric current block diagram；
Fig. 4 is the top view of the modified example of rotor inverter.
Specific embodiment
Below in reference to attached drawing, to the reality that the power inverter of the disclosure is applied to for motor vehicle controller for motor
Example is applied to be described.
(first embodiment)
It will be described referring to figs. 1 to Fig. 3 to according to the controller for motor 100 of the present embodiment.Controller for motor
100 based on from high-order electronic control unit (ECU；Be not shown) request command control motor 200.Controller for motor
100 and motor 200 constitute so-called integrated actuating electric generator (ISG).
Made of controller for motor 100 and motor 200 are integrated.That is, controller for motor 100 and the formation of motor 200
So-called electromechanics integrated morphology.
Motor 200 is connected to the crankshaft by its belt between the crankshaft of internal combustion engine.Internal combustion engine is installed on vehicle.Cause
This, motor 200 and crankshaft-synchronous rotate.When motor 200 is driven by controller for motor 100 to be rotated, rotation is transmitted to crankshaft.
As a result, crankshaft rotates.On the contrary, rotation is transmitted to motor 200 when crankshaft is driven to rotate.As a result, motor
200 rotations.Motor 200 is driven and automatically rotated by controller for motor 100.As a result, starting or the vehicle of internal combustion engine
The assistance of traveling is carried out.In addition, rotation of the motor 200 based on crankshaft and rotate.As a result, motor 200 generates electric power.
Hereinafter, it will be briefly described motor 200, and will then describe controller for motor 100.
As shown in Figure 1, motor 200 includes rotor 201 and stator 202.In addition, motor 200 includes that axis and pulley (do not show
Out).Axis is rotationally arranged at the shell 300 of controller for motor 100.Expose to 300 outside of shell on the top of axis.Pulley is set
Set the top end in axis.Above-mentioned belt is connected to pulley.As a result, the rotation of crankshaft is transmitted to pulley via belt.On the contrary
The rotation on ground, axis is transmitted to crankshaft via belt.Motor 200 is equivalent to rotating electric machine.
The central part of axis is accommodated in shell 300.Rotor 201 is set to the central part of axis.In addition, stator 202 is set
It sets on the periphery of rotor 201.
Rotor 201 includes rotor coil 203.Rotor 201 further includes fixed part (not shown), and the fixed part is by rotor
Coil 203 is fixed to axis.Fixed part has circular cylindrical shape.Axis insertion fixed part in hollow portion and be fixed.
Rotor coil 203 is arranged in fixed part.Rotor coil 203 is electrically connected to the conducting wire (not shown) for being set to axis.Conducting wire electricity
The slip ring being connected on axis.Slip ring forms ring-type around the axis of axis.Annular slip ring and brush contact.Brush is electrically connected to motor control
Device 100 processed.Electric current from controller for motor 100 is supplied to brush.The electric current is supplied to via brush, slip ring and conducting wire
Rotor coil 203.As a result, generating magnetic field in rotor coil 203.Rotor 201 is equivalent to wound rotor.
Stator 202 includes stator coil 204.Stator 202 further includes stator core (not shown), and stator coil 204 is arranged
In the stator core.Stator core has circular cylindrical shape.Rotor 201 is set to hollow in stator core together with axis
Portion.Stator coil 204 includes U phase stator coil 205, V phase stator coil 206 and W phase stator coil 207.
U phase stator coil 205, V phase stator coil 206 and W phase stator coil 207 are integrated each by busbar therebetween
Ground is connected to controller for motor 100.Three-phase alternating current is supplied to U phase stator coil 205, V phase from controller for motor 100
Stator coil 206 and W phase stator coil 207.It is supplied to U phase stator coil 205, V phase stator coil 206 and W phase stator coil 207
It offsets one from another the alternating current of 120 degree of electrical angles to phase.As a result, by U phase stator coil 205, V phase stator coil 206 and W
Phase stator coil 207 generates the three phase rotating field for rotating rotor 201.Three phase rotating field and 203 phase of rotor coil
It hands over.
When each rotor coil 203 of current direction and stator coil 204, magnetic field is generated by each coil.As a result,
Rotation torque is generated in rotor coil 203.It is fixed when three-phase alternating current to be supplied to from controller for motor 100 as described above
When subcoil 204, the direction for generating rotation torque continuously changes.As a result, axis starts to rotate.Pulley is also revolved with axis together
Turn.Rotation is transmitted to crankshaft via belt.As a result, crankshaft also rotates.
On the contrary, when the burned driving of internal combustion engine, and when crankshaft automatically rotates, rotation is transmitted to cunning via belt
Wheel.In addition, rotation is transmitted to pulley via belt when crankshaft is rotated jointly by the rotation of wheel.As a result, axis with
Pulley rotates together.As a result, rotor coil 203 also rotates.From the magnetic field that rotor coil 203 emits and stator coil 204
Intersection.As a result, generating induced voltage in stator coil 204.As a result, current direction stator coil 204.By electric current
The battery 400 of vehicle is supplied to via controller for motor 100.Herein, the resistance in rotor coil 203 is substantially than stator line
High ten times of resistance in circle 204.
Then, controller for motor 100 will be described.As shown in Figure 1, controller for motor 100 includes for electricity
It is connected to the plus end 100a and negative terminal 100b of battery 400.Plus end 100a is connected to the anode of battery 400.Negative terminal
Sub- 100b is connected to the cathode of battery 400.Smoothing capacity device 100c is provided between plus end 100a and negative terminal 100b.
As shown in Figure 1, controller for motor 100 includes stator inverter 30 and rotor inverter 50.Stator inverter 30
It is connected in parallel between plus end 100a and negative terminal 100b with rotor inverter 50.In addition, controller for motor 100 includes
ISGECU 10 and current sensor 70.ISGECU 10 controls stator inverter 30 and rotor inverter 50.Current sensor 70
The electric current of stator inverter 30 and rotor inverter 50 is flowed through in detection.ISGECU 10 is equivalent to control unit.
ISGECU 10 is electrically connected to each stator inverter 30 and rotor inverter 50.ISGECU 10 can be via confluence
Item etc. is communicated with the high-order ECU for being installed on vehicle.Request command from high-order ECU is input into ISGECU 10.ISGECU
The generations such as 10 request commands based on input, the detection signal from current sensor 70 control signal to control stator inverter
30 and rotor inverter 50.ISGECU 10 controls signal to stator inverter 30 and the output of rotor inverter 50.As a result,
The driving of rotor inverter 30 and stator inverter 50 is controlled.
Stator inverter 30 includes U phase branch 31, V phase branch 32 and W phase branch 33.U phase branch 31, V phase branch 32 and W
Phase branch 33 is connected in parallel between plus end 100a and negative terminal 100b.
U phase branch 31, V phase branch 32 and W phase branch 33 respectively have high-side switch element and low side switch element.High side
Switch element and low side switch element are sequentially connected in series from plus end 100a to negative terminal 100b.Specifically, U phase branch 31
With U phase high-side switch element 34 and U phase low side switch element 35.V phase branch 32 has V phase high-side switch element 36 and V phase
Low side switch element 37.W phase branch 33 has W phase high-side switch element 38 and W phase low side switch element 39.
The switch element for constituting stator inverter 30 is MOS memory (MOSFET).Therefore, it switchs
Element respectively has parasitic diode.That is, U phase high-side switch element 34 has U phase high side diode 34a.U phase low side switch member
Part 35 has U phase low side diodes 35a.V phase high-side switch element 36 has V phase high side diode 36a.V phase low side switch member
Part 37 has V phase low side diodes 37a.W phase high-side switch element 38 has W phase high side diode 38a.W phase low side switch member
Part 39 has W phase low side diodes 39a.The cathode terminal of each parasitic diode is located at the side plus end 100a.Anode terminal position
In the side negative terminal 100b.
As shown in Figure 1, U phase stator coil 105, V phase stator coil 206 and W phase stator coil 207 are held each other at one
Connection.As a result, U phase stator coil 205, V phase stator coil 206 and W phase stator coil 207 are connected in a manner of star-like connection
It connects.The other end of U phase stator coil 205 is connected to the center between U phase high-side switch element 34 and U phase low side switch element 35
Point.The other end of V phase stator coil 206 is connected to the center between V phase high-side switch element 36 and V phase low side switch element 37
Point.The other end of W phase stator coil 207 is connected to the center between W phase high-side switch element 38 and W phase low side switch element 39
Point.
As above-mentioned electric connection structure as a result, for example, working as U phase high-side switch element 34,37 and of V phase low side switch element
When W phase low side switch element 39 is kept closed and the control signal from ISGECU 10, current direction stator coil
204.Specifically, electric current is from plus end 100a via U phase high-side switch element 34, U phase stator coil 205, V phase stator coil
206 and V phase low side switch element 37 flows to negative terminal 100b.Electric current is from plus end 100a via U phase high-side switch element 34, U
Phase stator coil 205, W phase stator coil 207 and W phase low side switch element 39 flow to negative terminal 100b.
According to the present embodiment, the switch element for constituting stator inverter 30 is made of silicon.In addition, module type power MOSFET
As the switch element for constituting stator inverter 30.Therefore, the rated current of switch element and parasitic diode is high.For example, opening
It closes element and parasitic diode is designed to even bear the electric current to circulate during switching element short-circuits.Constituting stator inverter
Using there is so-called single side cooling system in 30 switch element.
Rotor inverter 50 includes E phase branch 51 and F phase branch 52.E phase branch 51 and F phase branch 52 are connected in parallel just
Between terminal 100a and negative terminal 100b.E phase branch 51 and F phase branch 52 are equivalent to branch.Rotor inverter 50 constitutes full-bridge
Circuit.In addition, rotor inverter 50 includes protection element 53.Protection element 53 is gone here and there between plus end 100a and negative terminal 100b
Connection is connected to E phase branch 51 and F phase branch 52.As shown in Fig. 2, E phase branch 51, F phase branch 52 and protection element 53 are mounted on
On printed circuit board 50a.ISGECU 10 is also mounted on printed circuit board 50a.
E phase branch 51 has E phase high-side switch element 54 and E phase low side switch element 55.54 He of E phase high-side switch element
E phase low side switch element 55 is sequentially connected in series from plus end 100a towards negative terminal 100b.F phase branch 52 has F phase high
Side switch element 56 and F phase low side switch element 57.F phase high-side switch element 56 and F phase low side switch element 57 are from plus end
100a is sequentially connected in series towards negative terminal 100b.Above-mentioned switch element is equivalent to switch element.
Protection element 53 has protective switch element 58, and the protective switch element 58 setting is high in plus end 100a and E phase
Between side switch element 54.Protective switch element 58 is also positioned between plus end 100a and F phase high-side switch element 56.By
This, protective switch element 58 is arranged to share for example between E phase branch 51 and F phase branch 52.
When electric current passes through rotor coil 203, protective switch element 58 is controlled as closed state by ISGECU 10.
When opening ignition switch, ISGECU 10 is started.When ignition switch is switched to closing from opening, 10 pairs of protections of ISGECU are opened
Element 58 is closed to be checked.When completing to check, ISGECU10 goes to low power consumption mode, in the low power consumption mode
In, power consumption is low compared with the power consumption of dynamic period.Whereby, ISGECU 10 is in each start to protective switch member
Part 58 is checked.
Specifically, ISGECU 10 executes the cut-off/close control of protective switch element 58.ISGECU10 break it is opening/closing
Close the voltage at the both ends of control period detection protective switch element 58.It is being to close by the control of protective switch element 58 when detecting
Difference in voltage substantially 0 when conjunction state at both ends, and when protective switch element 58 to be in an off state at both ends
When difference in voltage is substantially equal to battery voltage, ISGECU 10 determines that protective switch element 58 is in normal condition.When detecting
When really not so, ISGECU 10 determines that protective switch element 58 is in abnormality.When determine protective switch element 58 be in just
When normal state, ISGECU 10 controls protective switch element 58 always as closed state.When determining that protective switch element 58 is in
When abnormality, the exception in protective switch element 58 is notified the user of vehicle by ISGECU 10.For example, passing through a little
The bright indicator for being installed on vehicle is realized.
The above-mentioned switch element for constituting rotor inverter 50 is MOSFET.Therefore, each switch has parasitic diode.
That is, E phase high-side switch element 54 has E phase high side diode 54a.E phase low side switch element 55 has E phase low side diodes
55a.F phase high-side switch element 56 has F phase high side diode 56a.F phase low side switch element 57 has F phase low side diodes
57a.Protective switch element 58 has protection diode 58a.The cathode electrode of each parasitic diode is located at the side plus end 100a.
Anode electrode is located at the side negative terminal 100b.
Above-mentioned brush is connected to central point and F phase between E phase high-side switch element 54 and E phase low side switch element 55
Central point between high-side switch element 56 and F phase low side switch element 57.Brush is contacted with the slip ring of axis.Slip ring passes through conducting wire
It is electrically connected to rotor coil 203.Whereby, the central point between E phase high-side switch element 54 and E phase low side switch element 55 and
Central point between F phase high-side switch element 56 and F phase low side switch element 57 is respectively electrically connected to rotor coil 203.Specifically
For, as shown in Figure 1, the central point between E phase high-side switch element 54 and E phase low side switch element 55 is electrically connected to rotor line
One end of circle 203.Central point between F phase high-side switch element 56 and F phase low side switch element 57 is electrically connected to rotor coil
203 other end.
As above-mentioned connection structure as a result, for example, when protective switch element 58, E phase high-side switch element 54 are low with F phase
When side switch element 57 is kept closed and the control signal from ISGECU 10, electric current from rotor coil 203 one
End flows to the other end.That is, electric current is from plus end 100a via protective switch element 58, E phase high-side switch element 54, rotor coil
203 and F phase low side switch element 57 flows to negative terminal 100b.In addition, for example, when protective switch element 58, F phase high-side switch member
When part 56 and E phase low side switch element 55 are kept closed, electric current flows to one end from the other end of rotor coil 203.That is, electric
Stream is from plus end 100a via protective switch element 58, F phase high-side switch element 56, rotor coil 203 and E phase low side switch member
Part 55 flows to negative terminal 100b.
The capacitance settings of smoothing capacity device 100c are at can be during the switching of stator inverter 30 and rotor inverter 50
Voltage is smooth.Rotor coil 203 for generating magnetic field has than the higher impedance of stator coil 204.As a result, stator
The actual amount of electric current (inverter current) in inverter 30 is significantly greater than the actual amount of the electric current in rotor inverter 50.Cause
This, most of capacitor of smoothing capacity device 100c is capacitor needed for stator inverter 30.The capacitor pair of smoothing capacity device 100c
It is excessive for rotor inverter 50.In the present embodiment, protective switch element 58 is arranged in rotor inverter 50, in this turn
In sub- inverter 50, inverter current amount is less than the inverter current amount in stator inverter 30.
According to the present embodiment, the switch element for constituting rotor inverter 50 is made of silicon.Constitute E phase branch 51 and F phase branch
The rated current of switch element of the rated current of the switch element on road 52 than constituting stator inverter 30 is low.Therefore, E phase is constituted
The physical size of switch element of the physical size of the switch element of branch 51 and F phase branch 52 than constituting stator inverter 30
It is small.
In consideration of it, identical as the switch element of stator inverter 30 is constituted, protective switch element 58 is power MOSFET.Cause
This, protective switch element 58 has rated current more higher than the switch element for constituting E phase branch 51 and F phase branch 52.Protection
Switch element 58 is designed to or even can bear the electricity to circulate during the switching element short-circuits of composition E phase branch 51 and F phase branch 52
Stream.In addition, the switching speed of switch element of the switch speed of protective switch element 58 than constituting E phase branch 51 and F phase branch 52
Degree is slow.Based on forming material, chip size, radiator structure etc. come structure E phase branch 51 and the switch element of F phase branch 52
Switch and protective switch element 58 between rated current it is poor.
As shown in Fig. 2, protective switch element 58 has the switch element than constituting E phase branch 51 and F phase branch 52 bigger
Physical size.Therefore, protective switch element 58 has the switch element than constituting E phase branch 51 and F phase branch 52 bigger
Thermal capacity.In addition, E phase branch 51, F phase branch 52, protective switch element 58 and ISGECU 10 are mounted on printed circuit board 50a
A surface on.Protective switch element 58 is located between E phase branch 51 and F phase branch 52 and ISGECU 10.It is more specific and
Speech, as shown in figure 4, protective switch element 58 be located in E phase branch 51 and F phase branch 52 and ISGECU 10 circuit element it
Between, foregoing circuit element is to Thermal protection, is, for example, the microcomputer 10a including circuit element.
Fig. 2 shows ISGECU 10 and E phase branch 51, F phase branch 52 and protection elements 53 to be installed along with printed circuit board
Structure on the front of 50a.However, for example, E phase branch 51, F phase branch 52 and protection element 53 are mountable in printed circuit board
The front of 50a, and the mountable back side in printed circuit board 50a ISGECU 10.In addition, for example, E phase branch 51 and F phase branch
52 is mountable on the front of printed circuit board 50a.ISGECU 10 and protection element 53 are mountable printed circuit board 50a's
On the back side.At this point, E phase branch 51 and F phase branch 52 and protection element 53 may be disposed to for example be located at it with printed circuit board 50a
Between mode it is relative to each other.As a result, artificially increasing the thermal capacity of E phase branch 51 and F phase branch 52.As a result,
The heat generated in E phase branch 51 and F phase branch 52 is inhibited to transmit to ISGECU 10.
Current sensor 70 detects the magnitude of current for flowing through stator coil 204 and rotor coil 203.More specifically, electric current
Sensor 70 includes shunt resistance, which is set to stator inverter 30 and rotor inverter 50.Current sensor 70
Including U phase shunt resistance 71, V phase shunt resistance 72, W phase shunt resistance 73, E phase shunt resistance 74 and F phase shunt resistance 75.
U phase shunt resistance 71 is arranged between U phase low side switch element 35 and negative terminal 100b.V phase shunt resistance 72 is set
It sets between V phase low side switch element 37 and negative terminal 100b.W phase shunt resistance 73 setting W phase low side switch element 39 with
Between negative terminal 100b.E phase shunt resistance 74 is arranged between E phase low side switch element 55 and negative terminal 100b.F phase shunts electricity
Resistance 75 is arranged between F phase low side switch element 57 and negative terminal 100b.
The resistance value of the storage shunt resistance of ISGECU 10.It is detected based on the voltage at resistance value and shunt resistance both ends
Flow to the magnitude of current of each low side switch element of each branch.To which estimation flows through each stator coil 204 and rotor coil
203 magnitude of current.Current sensor 70 is not limited to above-mentioned example.For example, being also able to use based on the magnetic generated by current flowing
Detect the structure of the magnitude of current.
It then, will be performed during the switching element short-circuits for constituting rotor inverter 50 to ISGECU 10 referring to Fig. 3
Short circuit processing be described.For example, when ISGECU 10 is low with E phase by protective switch element 58, F phase high-side switch element 56
When the control of side switch element 55 is closed state, the current flowing as shown in the dotted arrow in Fig. 3.At this point, when E phase high side is opened
When closing 54 generation short trouble, plus end 100a and negative terminal 100b is via protective switch element 58, E phase high-side switch element 54
And E phase low side switch element 55 connects.As a result, the electric current as shown in dotted arrow for having flowed to the point reduces.By in Fig. 3
Solid arrow shown in high current circulation.Smoothing capacity device 100c with sufficiently big capacitor is connected to rotor inverter
50.Therefore, the electric current to circulate during short circuit quickly becomes high current.
In this case, the magnitude of current for flowing to E phase shunt resistance 74 increases sharply.When ISGECU 10 detects electric current
When amount increases, ISGECU 10 stops output control signal, which is input to protective switch element 58 with by protective switch
The state of element 58 is gone off from closure.As a result, it is suppressed that the circulation of the high current in E phase low side switch element 55.
Then, the function and effect of controller for motor 100 will be described.As described above, ISGECU10 control protection
Switch element 58 remains off it when short circuit occurs in the switch element for constituting E phase branch 51 or F phase branch 52.Its
As a result, not needing to increase the rated current that other short-circuit switch elements not yet occur.Whereby, E can be constituted not increasing
Short-circuit condition is prevented in the case where the rated current of the switch element of phase branch 51 and F phase branch 52.Therefore, E is constituted with increase
Phase branch 51 compares with the structure of the rated current of all switch elements of F phase branch 52, it is suppressed that rotor inverter 50
Physical size increases.Therefore, it is suppressed that the physical size of controller for motor 100 increases.
Protective switch element 58 is connected in series to each E phase branch 51 and F phase branch 52.Therefore, when composition E phase branch 51
Or the switch element of F phase branch 52 is when occurring short circuit, the current direction protective switch element 58 that circulates during short circuit.However, protecting
Protecting switch element 58 has rated current more higher than the switch element for constituting E phase branch 51 and F phase branch 52.It is more specific and
Speech, protective switch element 58 are power MOSFET, and are designed to even bear to constitute E phase branch 51 or F phase branch 52
The electric current to circulate during short circuit occurs for switch element.Therefore, it is suppressed that by the current electrifying that circulates during short circuit to protective switch
The damage of element 58.Therefore, it is suppressed that unstable behaviour of the protective switch element 58 during switching element short-circuits as described above
Make.
Protective switch element 58 has switch speed more lower than the switch element for constituting E phase branch 51 and F phase branch 52.
As a result, reducing the electricity generated when switching the state of protective switch element 58 between disconnection and closure during short circuit
Gush voltage.Therefore, it is suppressed that generated when being switched between disconnection and closure by the state of the protective switch element 58 during short circuit
Surge voltage caused by damage to protective switch element 58.
When opening ignition switch, ISGECU 10 is started.In addition, ISGECU 10 is executed during starting to protective switch
The inspection of element 58.As a result, operating to obtain for the cut-off/close of protective switch element 58 when opening ignition switch
Confirmation.It opens ignition switch and is equivalent to and begin to use vehicle.
Protective switch element 58 has the thermal capacity bigger than the switch element for constituting E phase branch 51 and F phase branch 52.It protects
Shield switch element 58 is located between E phase branch 51 and F phase branch 52 and ISGECU10.As a result, protective switch element 58
The heat from being powered and handover operation generates is inhibited to transmit from E phase branch 51 and F phase branch 52 to ISGECU 10.In addition,
50 driving period of rotor inverter, protective switch element 58 is controlled as closed state.Therefore, several in protective switch element 58
The heat caused by switching is not generated.As a result, reducing the amount of the heat generated in protective switch element 58.Therefore,
The temperature increase for being positioned adjacent to the ISGECU 10 of protective switch element 58 is inhibited.
The foregoing describe preferred embodiment of the present disclosure.However, the present disclosure is not limited to above-described embodiments.This public affairs is not being departed from
Various modifications can be carried out in the case where opening spirit.
(other embodiments)
According to the present embodiment, gives and motor 200 is connected to the crankshaft for being installed on the internal combustion engine of vehicle by belt
Example.It is also possible, however, to use motor 200 to be connected to the structure of crankshaft by transmission mechanism.
According to the present embodiment, gives protective switch element 58 and be located in plus end 100a and E phase high-side switch element 54
Between, and the example being also positioned between plus end 100a and F phase high-side switch element 56.It is also possible, however, to use protection
Switch element 58 is located between negative terminal 100b and E phase low side switch element 55, and is also positioned on negative terminal 100b and F phase
Structure between low side switch element 57.
According to the present embodiment, the example that rotor inverter 50 is full-bridge circuit is given.However, rotor inverter 50 can be with
Constitute half-bridge circuit.
According to the present embodiment, giving and constituting the switch element of stator inverter 30 and rotor inverter 50 is MOSFET's
Example.However, the switch element for constituting stator inverter 30 and rotor inverter 50 is not limited to above-mentioned example.For example, can make
With insulated gate bipolar transistor (IGBT).In this case, additional freewheeling diode is connected in anti-parallel to switch element.
According to the present embodiment, give in the switch element for constituting stator inverter 30 using there is showing for single side cooling system
Example.However, being not limited to above-mentioned example for carrying out cooling system to the switch element for constituting stator inverter 30.For example, can
To use two-sided cooling system.The cooling system for having fluid coolant is utilized alternatively, it is also possible to use.
According to the present embodiment, the example that stator inverter 30 and rotor inverter 50 are made of silicon is given.However, example
Such as, formation material of the silicon carbide with band gap more broader than silicon as stator inverter 30 and rotor inverter 50 can be used
Material.As a result, the operation under high temperature can be stablized.
In addition, stator inverter 30 can be different from the forming material of rotor inverter 50.For example, rotor inverter 50 can
It is made of silicon carbide, and stator inverter 30 can be made of silicon.
In addition, in rotor inverter 50, the forming material of E phase branch 51 and F phase branch 52 and the shape of protection element 53
It can be different at material.For example, E phase branch 51 and F phase branch 52 can be made of silicon.Protection element 53 can be made of silicon carbide.
Claims (15)
1. a kind of power inverter characterized by comprising
Branch (51,52), the branch include multiple switch element (54,55,56,57), and multiple switch element series connection connect
It connects between plus end (100a) and negative terminal (100b)；
Protective switch element (58), the protective switch element are connected in series to the institute between the plus end and the negative terminal
Branch is stated, and there is rated current more higher than the switch element；And
Control unit (10), when short circuit has occurred for the circuit for including switch element, described control unit makes the protective switch
Element disconnects.
2. power inverter according to claim 1, which is characterized in that
The branch includes multiple branches, and multiple branch circuit parallel connections are connected between the plus end and the negative terminal；And
And
The protective switch element shares in multiple branches, and is arranged in plus end side or negative terminal side.
3. power inverter according to claim 1, which is characterized in that further include:
Smoothing capacity device (100c), the smoothing capacity device are parallel-connected to described between the plus end and the negative terminal
Branch, wherein
The protective switch element has the switch speed slower than the switch element.
4. power inverter according to claim 2, which is characterized in that further include:
Smoothing capacity device (100c), the smoothing capacity device are parallel-connected to described between the plus end and the negative terminal
Branch, wherein
The protective switch element has the switch speed slower than the switch element.
5. power inverter according to any one of claim 1 to 4, which is characterized in that
Described control unit checks the cut-off/close operation of the protective switch element.
6. power inverter according to claim 5, which is characterized in that
When described control unit starts every time, described control unit checks the cut-off/close operation of the protective switch element.
7. power inverter according to any one of claim 1 to 4, which is characterized in that further include:
Printed circuit board (50b), the branch, the protective switch element and described control unit are mounted on the printed circuit
On plate.
8. power inverter according to claim 7, which is characterized in that
The protective switch element has the thermal capacity bigger than the switch element；And
The protective switch element is located between the branch and described control unit.
9. power inverter according to claim 8, which is characterized in that
The protective switch element be located in described control unit circuit element (10a) to Thermal protection and the branch it
Between.
10. power inverter according to claim 8, which is characterized in that
The power inverter is electrically connected to the wound rotor (201) of rotating electric machine (200).
11. power inverter according to claim 9, which is characterized in that
The power inverter is electrically connected to the wound rotor (201) of rotating electric machine (200).
12. power inverter according to claim 10, which is characterized in that
The power inverter is integrally connected to the rotating electric machine.
13. power inverter according to claim 11, which is characterized in that
The power inverter is integrally connected to the rotating electric machine.
14. power inverter according to claim 12, which is characterized in that
The power inverter is installed on vehicle.
15. power inverter according to claim 13, which is characterized in that
The power inverter is installed on vehicle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-111021 | 2017-06-05 | ||
| JP2017111021A JP6544387B2 (en) | 2017-06-05 | 2017-06-05 | Power converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108988621A true CN108988621A (en) | 2018-12-11 |
| CN108988621B CN108988621B (en) | 2021-06-11 |
Family
ID=64279178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810563180.2A Active CN108988621B (en) | 2017-06-05 | 2018-06-04 | Power conversion device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6544387B2 (en) |
| CN (1) | CN108988621B (en) |
| DE (1) | DE102018113215A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101517876A (en) * | 2006-09-15 | 2009-08-26 | 三菱电机株式会社 | DC/DC power converting apparatus |
| JP2011182519A (en) * | 2010-02-26 | 2011-09-15 | Mitsubishi Electric Corp | Power converting apparatus |
| CN102904217A (en) * | 2012-10-12 | 2013-01-30 | 深圳市英威腾电气股份有限公司 | Diode-clamped three-level insulated gate bipolar translator (IGBT) drive protection circuit, diode-clamped three-level (IGBT) drive module, and diode-clamped three-level topology device |
| JP2015116095A (en) * | 2013-12-13 | 2015-06-22 | 日本精工株式会社 | Electronic control unit, electrically-driven power steering device, and vehicle |
| JP2016131463A (en) * | 2015-01-14 | 2016-07-21 | 株式会社デンソー | Dynamo-electric machine controller |
| JP2017022084A (en) * | 2015-07-13 | 2017-01-26 | 株式会社デンソーウェーブ | Operating device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008060430A (en) * | 2006-08-31 | 2008-03-13 | Daikin Ind Ltd | Power converter |
| JP5377756B2 (en) | 2010-04-14 | 2013-12-25 | 本田技研工業株式会社 | Short circuit protection method |
| JP5839881B2 (en) * | 2011-08-04 | 2016-01-06 | 本田技研工業株式会社 | Boost control circuit |
| JP2016052180A (en) * | 2014-08-29 | 2016-04-11 | 三菱自動車工業株式会社 | Fault detection device for dc/dc converter |
| EP3163742B1 (en) * | 2015-08-04 | 2024-03-13 | Mitsubishi Electric Corporation | Inverter control device and air-conditioner |
-
2017
- 2017-06-05 JP JP2017111021A patent/JP6544387B2/en active Active
-
2018
- 2018-06-04 DE DE102018113215.8A patent/DE102018113215A1/en active Pending
- 2018-06-04 CN CN201810563180.2A patent/CN108988621B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101517876A (en) * | 2006-09-15 | 2009-08-26 | 三菱电机株式会社 | DC/DC power converting apparatus |
| JP2011182519A (en) * | 2010-02-26 | 2011-09-15 | Mitsubishi Electric Corp | Power converting apparatus |
| CN102904217A (en) * | 2012-10-12 | 2013-01-30 | 深圳市英威腾电气股份有限公司 | Diode-clamped three-level insulated gate bipolar translator (IGBT) drive protection circuit, diode-clamped three-level (IGBT) drive module, and diode-clamped three-level topology device |
| JP2015116095A (en) * | 2013-12-13 | 2015-06-22 | 日本精工株式会社 | Electronic control unit, electrically-driven power steering device, and vehicle |
| JP2016131463A (en) * | 2015-01-14 | 2016-07-21 | 株式会社デンソー | Dynamo-electric machine controller |
| JP2017022084A (en) * | 2015-07-13 | 2017-01-26 | 株式会社デンソーウェーブ | Operating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108988621B (en) | 2021-06-11 |
| JP2018207681A (en) | 2018-12-27 |
| DE102018113215A1 (en) | 2018-12-06 |
| JP6544387B2 (en) | 2019-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9059655B2 (en) | Method for fault recognition in an electric machine controlled by an inverter in a motor vehicle and device for monitoring an operation of the electric machine | |
| US20190097561A1 (en) | Inverter driver | |
| US20070182384A1 (en) | Vehicle Rotating Electric Machine | |
| KR20150054812A (en) | Operating state circuit for an inverter and method for setting operating states of an inverter | |
| JP2006203995A (en) | Mos rectifier, method of driving mos rectifier, motor-generator, and electric vehicle using it | |
| MXPA06009995A (en) | Electrical machine having a series chopper circuit. | |
| JP5270602B2 (en) | Vehicle current limiting device | |
| CN108988621A (en) | Power inverter | |
| KR101912970B1 (en) | Method and device for operating a brushless motor | |
| JP4347845B2 (en) | Winding field type rotating electrical machine control device | |
| JP6231023B2 (en) | Method for controlling a power bridge and corresponding control device, power bridge and rotating electromechanical system | |
| CN109328429A (en) | Controller for motor | |
| EP3832875B1 (en) | Rectification device and vehicle ac power generating apparatus provided with same | |
| JP5983485B2 (en) | Alternator and rectifier | |
| JP6589803B2 (en) | Rotating electrical machine control device | |
| JP2021145408A (en) | Control circuit of power converter | |
| TWI244448B (en) | Over-voltage prevention device for a bicycle dynamo | |
| CN109831129B (en) | Control device, rotating electrical machine including the same, and control method | |
| CN108988311B (en) | Power conversion device and power conversion circuit | |
| CN109831131B (en) | Control device, rotating electrical machine including the same, and control method | |
| JP2019068575A (en) | Inverter control device | |
| US11621660B2 (en) | Method for controlling an electric rotary machine operating as a generator and corresponding control system for reducing the voltage in the network in the event of a cutoff | |
| JP6702281B2 (en) | Stop control system | |
| JP2015070621A (en) | Rectifier and temperature detection method of semiconductor switching element | |
| JP2020195211A (en) | Voltage converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |