CN104203634A

CN104203634A - Control device for rotating electric machine

Info

Publication number: CN104203634A
Application number: CN201380007758.1A
Authority: CN
Inventors: 今西裕人; 横山笃; 山田博之; 三井利贞
Original assignee: Hitachi Automotive Systems Ltd
Current assignee: Hitachi Astemo Ltd
Priority date: 2012-03-07
Filing date: 2013-02-15
Publication date: 2014-12-10
Anticipated expiration: 2033-02-15
Also published as: CN104203634B; JP2013187983A; DE112013000565T5; JP5802577B2; WO2013132986A1; DE112013000565B4

Abstract

This control device for a rotating electric machine is equipped with: a torque command calculation unit (40) that calculates a torque command; a braking force command calculation unit that calculates a braking force command; a first torque limiting unit (35) and a magnet temperature calculation unit (33), as coil temperature acquisition units; an estimated magnet temperature calculation unit (32); the first torque limiting unit (35), which calculates a first torque limit; a second torque limiting unit (37), which calculates a second torque limit; a rotational frequency limiting unit (38) that calculates a rotational frequency limit value for a motor; and a balancing torque calculation unit that (39) calculates a balancing torque. The torque command calculation unit (40) outputs a torque command such that the motor torque does not exceed the first and second torque limits and the rotational frequency does not exceed the rotational frequency limit, and when the balancing torque value is negative, a torque-zero torque command is output. When the balancing torque value is negative, the braking force command calculation unit (41) outputs a braking command that generates braking force.

Description

Rotary electric machine controller

Technical field

The present invention relates to have the rotary electric machine controller of rotating machine for the vehicular drive of the rotor that is provided with the stator of coil and is provided with magnet.

Background technology

In the driving engine for vehicular drive (motor) of electronlmobil, for fear of the scaling loss of coil or the demagnetization of the heat of magnet, known a kind of engine control unit that prevents the excessive temperature rising of driving engine.For example, in the invention of recording at patent documentation 1, when the temperature of coil or magnet rises, by being declined, the torque of driving engine reduces the temperature of coil or magnet.

Technical literature formerly

Patent documentation

Patent documentation 1: TOHKEMY 2008-109816 communique

Summary of the invention

The problem that invention will solve

Yet, about the heating of magnet, with the magnetic flux through magnet, change as former thereby generation, be not only the torque of driving engine, rotating speed increase also can make it become large.For this reason, in the situation that for example high when rotation magnet temperature become in the existing apparatus that the too high torque that makes driving engine declines, existence cannot suppress the overheated problem of magnet fully.

For solving the means of problem

The related rotary electric machine controller of invention of technical scheme 1, is characterized in that, be mounted on vehicle, this vehicle possesses: vehicular drive rotating machine, and it has the stator that is provided with coil and the rotor that is provided with magnet; DC-to-AC converter, it supplies with drive current to vehicular drive with rotating machine; And brake equipment, above-mentioned rotary electric machine controller possesses: torque instruction operational part, and it calculates the torque instruction that is sent to DC-to-AC converter; Braking instruction operational part, it calculates the braking instruction that is sent to brake equipment; Coil temperature acquisition unit, it obtains the temperature information of coil; Magnet temperature acquisition unit, it obtains the temperature information of magnet; The 1st torque limitation portion, its temperature information based on coil is calculated the 1st torque limit value; The 2nd torque limitation portion, its temperature information based on magnet is calculated the 2nd torque limit value; Rotating speed restriction operational part, its temperature information based on magnet is calculated the rotating speed limits value of rotating machine for vehicular drive; With balancing moment operational part, it obtains the Vehicle Driving Cycle resistance under rotating speed limits value, calculate the balancing moment that is equivalent to this Vehicle Driving Cycle resistance, torque instruction operational part output makes vehicular drive become the 1st torque limit value with the torque of the operation point of rotating machine and the 2nd torque limit value rotating speed following and operation point becomes rotating speed limits value such torque instruction below, and in the situation that being negative value, exports balancing moment the torque instruction of torque zero, braking instruction operational part is in the situation that balancing moment is negative value, and output produces the braking instruction of braking force.

Invention effect

According to the present invention, the excessive temperature that can prevent from being arranged at the magnet of rotor rises.

Accompanying drawing explanation

Fig. 1 means the figure of the concise and to the point formation of the rotary electric machine controller in the 1st embodiment.

Fig. 2 means the cutaway view of the formation of driving engine 2.

Fig. 3 is the figure of trend of the heating of explanation coil 26.

Fig. 4 is the figure of trend of the heating of explanation magnet 21.

Fig. 5 means the figure of the protection domain in the situation that driving engine 2 is high temperature.

Fig. 6 means the block diagram of the engine control in the 1st embodiment.

Fig. 7 means the diagram of circuit of the engine control procedures in the 1st embodiment.

Fig. 8 means the diagram of circuit of the details of step S09.

Fig. 9 means the diagram of circuit of the details of step 10.

Figure 10 means the diagram of circuit of the details of step S11.

Figure 11 means the figure of the concise and to the point formation of the rotary electric machine controller in the 2nd embodiment.

Figure 12 means the block diagram of the engine control in the 2nd embodiment.

Figure 13 means the diagram of circuit of the engine control procedures of the 2nd embodiment.

Figure 14 means the diagram of circuit of the details of step S24.

Figure 15 means the figure of the concise and to the point formation of the rotary electric machine controller in the 3rd embodiment.

Figure 16 means the block diagram of the engine control in the 3rd embodiment.

Figure 17 means the figure of the relation between coil temperature and the 1st torque limitation.

Figure 18 means the figure of the relation between magnet temperature and the 2nd torque limitation and rotating speed restriction.

Figure 19 means the figure of an example of torque requests Tr, the 1st torque limitation Tr1, the 2nd torque limitation Tr2.

The specific embodiment

Below, with reference to accompanying drawing, illustrate for implementing mode of the present invention.In following illustrated embodiment, although take, be applicable to driving engine and the present invention be described as the situation of the control setup of the electronlmobil of unique drive source of vehicle as example, it is engine and electrical motor as the elec. vehicle of the drive source of vehicle, such as city motor bus equal controllers such as the lorry of hybrid vehicle (passenger vehicle), hybrid power truck etc., hybrid-power bus that the present invention also can be applicable to the elec. vehicles such as railway vehicle or engineering truck, the combustion engine of usining.

-1 embodiment-

Fig. 1 means the figure of formation of the rotary electric machine controller (hereinafter referred to as engine control unit) of the electronlmobil in the 1st embodiment.In addition, the dotted arrow of Fig. 1 represents flowing of signal.In vehicle, possess storage battery 1 as the energy of vehicle, to vehicle carry out motorized motions driving engine 2, between storage battery 1 and driving engine 2, carry out the inverter power supply 3 of power converter and the control algorithm portion 8 that inverter power supply 3, brake equipment 7 and the overheated warning light 17 of magnet etc. are controlled.

Inverter power supply 3 is supplied to driving engine 2 direct current power of supplying with from storage battery 1 being transformed to three-phase ac power by pulse width modulation (PWM).Driving engine 2 is kinetic energy using the transformation of electrical energy of supplying with as three-phase ac power from inverter power supply 3.The power that driving engine 2 produces as kinetic energy is passed to retarder 4, after the speed reduction gearing of the gear type by these retarder 4 inside slows down, is passed to the drive wheel 6 of left and right via modified roll mechanism 5, thereby becomes the propulsive effort that drives vehicle.

Near drive wheel 6, be provided with the brake equipment 7 that makes car brakeing.In brake equipment 7, possess hydraulic lifting apparatus, by the hydraulic operation power that this hydraulic lifting apparatus produces, suppress drive wheel 6, thereby produce friction force.Thus, kinetic energy is transformed to heat energy, with abrupt deceleration vehicle.Brake equipment 7 passes through abrupt deceleration vehicle, thereby can reduce the rotating speed of driving engine 2.

In Fig. 1, control algorithm portion 8 consists of CPU, memory device etc., carries out engine control procedures described later and comes control engine 2 and brake equipment 7.Control algorithm portion 8 sends instructions to inverter power supply 3, and the size of electric current by energising in change driving engine 2 is, the frequency of alternating current, thereby can make the torque that driving engine 2 produces, the regenerated electric power that is charged to storage battery 1 change.In addition, control algorithm portion 8 passes through to send to brake equipment 7 instruction (braking force instruction described later) of the friction force of change drive wheels 6 generations, thereby can change the braking force that brake equipment 7 produces.

As shown in Figure 1, control algorithm portion 8 is connecting the car speed sensor 9 that detects the speed of a motor vehicle, detect the accelerator sensor 10 of accelerator pedal aperture (operational ton of accelerator pedal), detect the brake sensor 11 of brake pedal aperture (operational ton of brake pedal), the coil temperature sensor 12 of the temperature of the coil described later 26 of detection driving engine 2, detect the external temperature sensor 13 of outside air temperature, detect the torque sensor 14 of the torque of driving engine 2, detect the tachogen 15 of the rotating speed of driving engine 2, detect the Slope Transducer 16 of road grade, the overheated warning light 17 of magnet described later etc.

Fig. 2 means the cutaway view of the formation of driving engine 2.Driving engine 2 be IPM (Interior Permanent Magnet: built-in type permanent-magnet) driving engine, in the inside of rotor 20, imbed magnet 21.At rotor 20, transmission shaft 22 is installed, this transmission shaft 22 is supported by the bearing 24 that is arranged at housing 23.The front and back quilt cover 23 of shell 25 blocks, and has fixed the stator 27 that is provided with coil 26 at inner peripheral surface.If switched in coil 26, alternating current produces rotating field, imbeds rotor 20 and transmission shaft 22 rotations of magnet 21.Its result, the electric energy that is supplied to driving engine 2 is transformed to kinetic energy.

Driving engine 2 generates heat according to operative condition.Thereby if excessively risen because heating makes engine temperature, the varnish that is coated on coil 26 is likely rotten.In addition, magnet 21 (for example, having used the magnet of rare earth metal), if having be subject to large counter field when high temperature, carries out the character of irreversible demagnetization.Therefore, need to from excessive temperature rises, coil 26 and magnet 21 be protected.

If coil 26 energising alternating currents, are generated heat by resistance.Fig. 3 is the figure of trend of the heating of explanation coil 26, and the heating trend (line L11～L14) of coil 26 is shown in the upper stack of curve L1 that represents the speed torque characteristic (maximum torque) of driving engine 2.In Fig. 3, the longitudinal axis characterizes motor torque, and transverse axis characterizes engine speed, and the represented line L1 of thick line characterizes the maximum torque of the driving engine 2 under normal temperature.Maximum torque L1 is illustrated in exportable motor torque under each engine speed, uses driving engine 2 in than maximum torque region (region that line L1 surrounds) more in the inner part.

Each line L11～L14 that characterizes heating trend is the curve that links the operation point that cal val is identical.The alternating current being energized in coil 26 roughly changes along with the size (absolute value) of motor torque.Thereby the cal val of coil 26 becomes along with the size of motor torque greatly, cal val becomes large according to the order of L11 < L12 < L13 < L14.As shown in Figure 3, if motor torque is identical, even if rotating speed changes, cal val also changes hardly.Motor torque is the cal val of the L11～L14 in negative region while representing to make driving engine 2 carry out reproduction operation.

On the other hand, magnet 21 generates heat along with the variation of the magnetic flux through magnet 21.Fig. 4 is the figure of trend of the heating of explanation magnet 21, and on the curve L1 of maximum torque that represents driving engine 2, stack illustrates the heating trend (curve L21～L24) of magnet 21.It is large that the density of the magnetic flux being formed by coil 26 becomes along with the size of motor torque.In addition, large if the rotating speed of driving engine 2 becomes, the variation of magnetic flux becomes fierce.Thereby the cal val of magnet 21 is along with the size of motor torque and engine speed and change, the curve L21～L24 that links as shown in Figure 4 the operation point of same cal val becomes complicated shape.In Fig. 4, cal val becomes large according to the order of L21 < L22 < L23 < L24.

As mentioned above, the cal val of coil 26 changes (Fig. 3) along with the size of motor torque, and with respect to this, the cal val of magnet 21 is along with the size of motor torque and engine speed and change (Fig. 4).Therefore, about coil 26, if the size of motor torque (absolute value) becomes greatly, cal val increases, and coil temperature becomes high temperature.In addition, the in the situation that of magnet 21, if the size of motor torque becomes large or engine speed, become greatly, cal val increases, and magnet temperature becomes high temperature.

Thereby, for making coil 26 be no more than its ceiling temperature Tcmax, as long as limit cal val according to coil temperature, be motor torque.In the situation that coil temperature is lower, the motor torque of allowing is larger, allowed the maximum torque of Fig. 3 in the situation that certain temperature is following till.On the contrary, in the situation that coil temperature is higher, the motor torque of allowing diminishes.At this, the allowed value of the motor torque determining according to its coil temperature (limits value) is called " the 1st torque limitation ".

Figure 17 means the figure of the relation between coil temperature and the 1st torque limitation.As mentioned above, coil 26 has heating trend as shown in Figure 3, if motor torque equate, no matter the cal val engine speed constant that how all to become.Thus, the 1st torque limitation L101, L102, L103 use with the straight line of transverse axis and characterize.At this, L101, L102, L103 are respectively that the temperature of coil 26 is the 1st torque limitation in the situation of Tc1, Tc2, Tc3 (Tc1 < Tc2 < Tc3).At motor torque, being that line L101 ', L102 ', the L103 ' shown in negative region is the line that makes the positive and negative reversion gained of line L101～L103, is that motor torque is the 1st torque limitation in negative situation.

In the situation that coil temperature is normal temperature, even if till exporting maximum torque L1 to, coil temperature can not surpass ceiling temperature Tcmax yet.On the other hand, in the situation that coil temperature is Tc1, if motor torque surpasses line L101, coil temperature can surpass ceiling temperature Tcmax, so running has been limited in the region being surrounded by line L101 and line L1 (being called the 1st limited field).And, the operation point continuous running of the low torque of the downside of online L101.And then in the situation that coil temperature is the Tc2 higher than Tc1, the 1st torque limitation L102 compares with line L101, the size of motor torque (absolute value) diminishes.Like this, for making the temperature of coil 26 be no more than ceiling temperature Tcmax, set the 1st torque limitation that the situation that coil temperature is high more has less absolute value.

On the other hand, the cal val of magnet 21 is along with the size (absolute value) of motor torque and engine speed and change, and the constant line of cal val becomes the such shape of line L21～L24 shown in Fig. 4.For making the temperature of magnet 21 be no more than ceiling temperature Tmmax, according to the temperature T m1 of magnet, Tm2, Tm3 (Tm1 < Tm2 < Tm3), set the torque limitation characterizing with the line L201～L203 shown in Figure 18.

The shape of line L21～L24 that the shape of line L201～L203 is constant to the cal val shown in Fig. 4 is similar.Wherein, the large region (close to the region of motor torque=0) of online L21～L24 medium speed, because no matter how engine speed all becomes roughly the same to motor torque, so the shape of the line L201～L203 in this region has been made as the vertical straight line that does not rely on motor torque.At this, about line L201～L203, suppose and vertical straight line portion L201b～L203b is called to " rotating speed restriction ", other curved portion L201a～L203a, L201a '～L203a ' are called to " the 2nd torque limitation ".

In the situation that magnet temperature is Tm1, the running in the region being surrounded by line L1 and line L201 is restricted, in the operation point continuous running of the low rotation of the side that more keeps left than line L201.In addition,, in the situation that magnet temperature rises to Tm3, control and make operation point become more the keep left region of side than line L201.Like this, by the running of control engine 2, thereby can prevent that magnet temperature from surpassing the ceiling temperature Tmmax of magnet 21.

As described later, in the situation that coil 26 becomes high temperature, the size (absolute value) that reduces motor torque reduces coil temperature, on the other hand, in the situation that magnet 21 becomes high temperature, reduce the size of motor torque or reduce engine speed and reduce magnet temperature, to prevent that coil temperature and magnet temperature from surpassing their ceiling temperature Tcmax, Tmmax.Like this, in coil 26 and magnet 21, in order to reduce, easily become the operation point of high temperature and temperature, desired countermeasure is also different.In the 1st embodiment, in the situation that the situation that coil 26 is high temperature and magnet 21 are high temperature, by implementing different protection work, thereby the excessive temperature that can prevent coil 26 and magnet 21 rises, in addition at coil 26, be that high temperature and magnet 21 are for high temperature in the situation that, in the scope of being surrounded by line L102 and line L1, can turn round in the operation point of high rotation and low torque, at coil 26, be not that high temperature and magnet 21 is for high temperature in the situation that, in the scope of being surrounded by line L1 and line L201, can turn round etc. in the operation point of low rotation and high torque (HT), can avoid the excessive restriction in situation that driving engine 2 is high temperature.

In the situation that the temperature that the temperature of driving engine 2 is higher, the temperature of coil 26 is Tc2, magnet 21 is Tm1, set as shown in Figure 5 the restriction (1st torque limitation L102, L102 ') relevant to coil temperature and with the restriction (the 2nd torque limitation L201a, L201a ', rotating speed limit L201b) of magnet temperature correlation.Control engine 2 in the region surrounding with line L102, L102 ', L201a, L201a ' and L201b (being called the 2nd limited field), thus can prevent that coil temperature and magnet temperature from surpassing ceiling temperature Tcmax, Tmmax.In addition, the 1st torque limitation, the 2nd torque limitation, rotating speed are restricted to positive number.

Control algorithm portion 8 sends instruction to inverter power supply 3 and makes the size (absolute value) of motor torque become the 1st below torque limitation, suppresses the heating of coil 26.Thus, can avoid the excessive temperature of coil 26 to rise.In addition, control algorithm portion 8 sends instruction to inverter power supply 3 and makes the size (absolute value) of motor torque become the 2nd below torque limitation, suppresses the heating of magnet 21.

As mentioned above, the heating of magnet 21 is along with the size (absolute value) of motor torque and engine speed and become large.Thereby even if reduce motor torque, in the situation that engine speed is large, the temperature of magnet 21 also likely rises.For example, in the situation that Vehicle Driving Cycle such in descending in the situation that, the load that increases engine speed impose on transmission shaft 22, even if motor torque is restricted to zero, the speed of a motor vehicle is that engine speed also can increase.Now, it is large that the heating of magnet 21 becomes, and magnet temperature continues to rise.In addition, if adjust under these circumstances motor torque, reduce engine speed, need to increase motor torque in regeneration side.In this case, the heating of magnet 21 also can increase.

In the present embodiment, if engine speed surpasses rotating speed restriction, control algorithm portion 8 sends instructions so that motor torque vanishing to inverter power supply 3, and to brake equipment 7, to send instructions be engine speed to reduce the speed of a motor vehicle.Thus, not be used in regeneration side and increase motor torque, just can reduce engine speed, thereby avoid the excessive temperature of magnet 21 to rise.

Fig. 6 means the block diagram of the engine control in the 1st embodiment.Fig. 7 means the diagram of circuit of the engine control procedures of the 1st embodiment.The engine control action of the 1st embodiment is described with Fig. 6,7 below.The CPU of control algorithm portion 8 has formed the engine control piece shown in Fig. 6 by the form of software of microcomputer, during starting at the ignition key switch (not shown) of vehicle in the engine control procedures shown in execution graph 7 repeatedly.

In control algorithm portion 8, be provided with torque requests operational part 30, braking force request operational part 31, heating operational part 32, magnet temperature operational part the 33, the 1st limiting unit the 34, the 2nd limiting unit 36, balancing moment operational part 39, torque instruction operational part 40, light ordering calculation portion 42 and braking force ordering calculation portion 41.In the 1st limiting unit 34, be provided with the 1st torque limitation portion 35, in the 2nd limiting unit 36, be provided with the 2nd torque limitation portion 37 and rotating speed limiting unit 38.The work of each several part is below described.

In step S01, vehicle speed signal based on from car speed sensor 9 inputs and the accelerator opening signal (with the corresponding signal of depression amount of accelerator pedal) of inputting from accelerator sensor 10, the torque requests of calculation engine 2 in torque requests operational part 30.Particularly, because the accelerator opening of accelerator pedal, with proportional as the output request of vehicle, is converted into output request so will speed up device aperture.Then, this output request is divided by the speed of a motor vehicle, calculate thus vehicle propulsive effort request, be the torque requests of driving engine 2.

In step S02, the drg aperture signal (with the corresponding signal of depression amount of brake pedal) based on from brake sensor 11 inputs, the braking force request of calculating brake equipment 7 in braking force request operational part 31.Because the drg aperture of brake pedal is with proportional as the braking force request of vehicle, so drg aperture is converted into braking force request.In addition, braking force request is converted into suitable motor torque, because move as made car retardation, so become negative value.

In step S03, motor torque based on from torque sensor 14 input and from the engine speed of tachogen 15 inputs, the cal val of the each several part of calculation engine 2 in heating operational part 32 each several parts such as () driving engine coil, permanent magnet, motor stator, rotors.The alternating current of input from inverter power supply 3 to driving engine 2, becomes the size and the frequency that for motor torque and engine speed, roughly determine.Therefore, the cal val of the each several part of driving engine 2 can according to driving engine 2 driving condition be that motor torque and engine speed calculate.Corresponding relation between the cal val of each portion of motor torque and engine speed and driving engine 2, is kept at as numerical value mapping graph in the memory device that control algorithm portion 8 possesses.In step S03, by retrieving this numerical value mapping graph, carry out thus the cal val of each portion of calculation engine 2.

In step S04, the temperature of the coil 26 based on from coil temperature sensor 12 input, from the cal val of each portion of the outside air temperature of external temperature sensor 13 inputs and the driving engine 2 that calculated by heating operational part 32, in magnet temperature operational part 33, calculate the temperature of magnet 21.The temperature of each portion of driving engine 2 be the heat by each portion of the heating of each portion of driving engine 2, driving engine 2 move and the heat radiation from each portion of driving engine 2 to extraneous air, revenue and expenditure decide.

At this, driving engine 2 is to be decided by the heal differential between each portion at the hot amount of movement between each portion.In addition, the heat dissipation capacity from each portion of driving engine 2 to extraneous air is to be decided by each portion of driving engine 2 and the heal differential of extraneous air.Therefore, can come each portion of calculation engine 2 according to the cal val of each portion of driving engine 2 and external air temperature is the temperature of magnet 21.And then, use the temperature of being come each portion of calculation engine 2 by the detected value of the coil temperature of coil temperature sensor 12 actual measurements, thereby each portion of calculation engine 2 is the temperature of magnet 21 more accurately.Because the heating of magnet 21 is roughly decided by motor torque and engine speed, so the temperature of magnet 21 can be that motor torque and engine speed are estimated according to the driving condition of the coil temperature by 12 actual measurements of coil temperature sensor and driving engine 2.As the driving condition of driving engine 2, also can use size and the frequency of above-mentioned alternating current.Certainly, also can not use the actual measured value of coil temperature, can for example, according to the cal val of each portion of driving engine 2 and outside air temperature (temperature while, supposing engine stop equals outside air temperature), carry out the temperature of each portion of calculation engine 2.

In step S05, the temperature of the coil 26 of the 1st torque limitation portion 35 that is arranged at the 1st limiting unit 34 based on from 12 inputs of coil temperature sensor, calculates for making coil 26 rise and obtain the 1st torque limitation of protection from excessive temperature.At this, the 1st torque limitation is the motor torque that coil 26 surpasses the boundary of ceiling temperature Tcmax, is that temperature and the cal val by coil 26 decides.If the situation that comparator coil temperature is high and low situation, a side of the situation that coil temperature is high, the heat that the temperature of coil 26 reaches till ceiling temperature Tcmax is little.Because the heating of coil 26 is roughly decided by motor torque, so the high side of coil temperature, the 1st torque limitation (motor torque that surpasses the boundary of ceiling temperature Tcmax) diminishes.Therefore, the 1st torque limitation can be calculated according to the temperature of coil 26.Higher the 1st torque limitation of coil temperature is more close to zero, the 1st torque limitation=0 when coil temperature=Tcmax.

In addition, from the corresponding relation till temperature to the 1 torque limitation of coil 26, as numerical value mapping graph, be kept in the memory device that control algorithm portion 8 possesses.In step S05, by retrieving this numerical value mapping graph, calculate thus the 1st torque limitation.The 1st torque limitation is positive number, and limiting engine torque is so that traction side becomes the 1st below torque limitation, and limiting engine torque is so that regeneration more than side becomes the positive and negative reverse value of the 1st torque limitation.

In step S06; the engine speed of the 2nd torque limitation portion 37 in the 2nd limiting unit 36 based on from tachogen 15 input and from the temperature of the magnet 21 of magnet temperature operational part 33 inputs, calculates for making magnet 21 rise and obtain the 2nd torque limitation of protection from excessive temperature.The 2nd torque limitation is the motor torque that magnet 21 surpasses the boundary of ceiling temperature, is that temperature and the heating by magnet 21 decides.As mentioned above, the heating of magnet 21 is roughly decided by motor torque and engine speed.Therefore, the 2nd torque limitation can be calculated according to the temperature of engine speed and magnet 21.As shown in figure 17, the line L201～L203 that characterizes the 2nd torque limitation is more close to slow speed of revolution in the situation that magnet temperature is higher, if comparison engine rotating speed equates part, magnet temperature is higher and torque value is less.

From the corresponding relation till temperature to the 2 torque limitation of engine speed and magnet 21, as numerical value mapping graph, be kept in the memory device that control algorithm portion 8 possesses.In step S06, by retrieving this numerical value mapping graph, calculate thus the 2nd torque limitation.The 2nd torque limitation is positive number, and limiting engine torque is so that traction side becomes the 2nd below torque limitation, and limiting engine torque is so that regeneration more than side becomes the positive and negative reverse value of the 2nd torque limitation.

In step S07; the temperature of the magnet 21 of the rotating speed limiting unit 38 in the 2nd limiting unit 36 based on from magnet temperature operational part 33 input, calculates for making magnet 21 rise and obtain the rotating speed restriction (the rotational speed N max characterizing with line L201b～L203b of Figure 18) of protection from excessive temperature.As shown in figure 18, rotating speed restriction Nmax is that the size of no matter motor torque surpasses the engine speed of the boundary of ceiling temperature for what kind of value all has magnet temperature, is that the temperature by magnet 21 decides with generating heat.

As mentioned above, although the heating of magnet 21 is roughly decided by motor torque and engine speed, as shown in Figure 4, in each line L21～L24, in the large region of rotating speed (close to the region of motor torque=0), cal val almost depends on engine speed.That is, at interior lines, the region L21～L24 close to motor torque=0, be the shape close to vertical line.Thereby, in the present embodiment, with vertical straight line, be similar to the line of rotating speed restriction.Therefore, rotating speed restriction Nmax can calculate according to the temperature of magnet 21.From the temperature of magnet 21 till the corresponding relation of rotating speed restriction Nmax, as numerical value mapping graph, be kept in the memory device that control algorithm portion 8 possesses.In step S07, by retrieving this numerical value mapping graph, calculate thus rotating speed restriction Nmax.

In addition, engine speed is the 2nd torque limitation in the above situation of rotating speed restriction, at balancing moment described later, is zero according to the mode of (the 2nd torque limitation)=(balancing moment), to set above in the situation that.On the other hand, at balancing moment, be less than zero (, balancing moment be negative value) in the situation that, according to the mode of (the 2nd torque limitation)=0, set.Become respectively such line shown in the single-point line of Fig. 5.

In step S08, the rotating speed restriction Nmax based on from 38 inputs of rotating speed limiting unit and the road grade of inputting from Slope Transducer 16 are calculated balancing moment in balancing moment operational part 39.When engine speed is rotating speed restriction Nmax, balancing moment is the motor torque that the resistance to motion with vehicle balances each other.Resistance to motion is decided by road grade, air resistance, rolling frictional resistance etc.Because air resistance, rolling frictional resistance almost decide according to the speed of a motor vehicle, therefore, by using the road grade from Slope Transducer 16, decide resistance to motion.

If motor torque is made as to the value of balancing moment, engine speed converges on the value of rotating speed restriction.Balancing moment is decided by rotating speed restriction and resistance to motion, if know road grade, the resistance to motion under certain engine speed can determine.Therefore, balancing moment can calculate according to rotating speed restriction and road grade.In addition, in the situation that being negative value, resistance to motion (for example, travels in the situation of descending), because balancing moment is the motor torque that the line of resistance to motion and the line of rotating speed restriction Nmax intersect, so become negative value.From rotating speed restriction and road grade till the corresponding relation of balancing moment, as numerical value mapping graph, be kept in the memory device that control algorithm portion 8 possesses.In step S08, by retrieving this numerical value mapping graph, carry out thus calculated equilibrium torque.

In step S09, the torque requests of torque instruction operational part 40 based on from torque requests operational part 30 input, from the 1st torque limitation of the 1st torque limitation portion 35 inputs with from the 2nd torque limitation of the 2nd torque limitation portion 37 inputs, calculate the torque instruction sending to inverter power supply 3.

Fig. 8 means the diagram of circuit of the details of step S09.In step S091, judge that whether the torque requests being calculated by step S01 is as more than zero.In step S091, determine torque requests and be zero above in the situation that, enter step S092.In step S092, the 1st torque limitation relatively being calculated by step S05, the 2nd torque limitation and the torque requests being calculated by step S06, set the value of the value minimum in these values for the torque instruction sending to inverter power supply 3.

Figure 19 has represented an example of torque requests Tr, the 1st torque limitation Tr1, the 2nd torque limitation Tr2.In the example shown in Figure 19 (a), because the value of the value minimum of torque is torque requests Tr, so set based on torque requests Tr the torque instruction sending to inverter power supply 3 in step S029.On the other hand, in the example shown in Figure 19 (b), because the 2nd torque limitation Tr2 is minimum, so the torque instruction sending based on the 2nd torque limitation Tr2 to inverter power supply 3.In addition, in the situation that engine speed N is more than rotating speed restriction (Nmax of Figure 19), as mentioned above because the 2nd torque limitation is regarded as zero or balancing moment according to the positive and negative of balancing moment, so the torque instruction sending based on them to inverter power supply 3.

On the other hand, the in the situation that of determining torque requests be less than zero (being negative sign) in step S091, enter step S093.In step S093, positive and negative reverse value and the torque requests of the positive and negative reverse value of the 1st torque limitation relatively being calculated by step S05, the 2nd torque limitation being calculated by step S06, the peaked torque instruction sending based on them to inverter power supply 3.The excessive temperature that thus, can prevent coil 26 and magnet 21 rises.

Turn back to Fig. 7, in step S10, the balancing moment of braking force ordering calculation portion 41 based on from 39 inputs of balancing moment operational part and the braking force request of inputting from braking force request operational part 31, calculate the braking force instruction sending to brake equipment 7.

Fig. 9 means the diagram of circuit of the details of step 10.In step S101, judge that whether the balancing moment being calculated by step S08 is as more than the braking force request being calculated by step S02.Because braking force request is zero (situation of inoperation drg) or is negative (stepping on the situation of drg), so when travelling as level land or during up-hill journey resistance to motion for just, balancing moment is in positive situation, in step S101, be judged to be "Yes" (request of balancing moment >=braking force), enter step S103.In step S103, as the braking force instruction that should send to brake equipment 7, selected the braking force request being calculated by step S02.

On the other hand, when as descent run resistance to motion be in negative situation, balancing moment is also for negative.Under this situation, when (braking force request) < (balancing moment), the effect that a side of braking force request reduces engine speed is large.In this case, in step S101, be judged to be "Yes" (braking force request < balancing moment), enter step S103, as the braking force instruction that should send to brake equipment 7, selected the braking force request being calculated by step S02.On the contrary, when (braking force request) >=(balancing moment), the effect that one side of balancing moment (negative value) reduces engine speed is large, so enter step S102, selected balancing moment, the braking force instruction of the balancing moment based on being calculated by step S08 is sent to brake equipment 7.

In the situation that entering step S102 from step S101, till engine speed is reduced to the rotating speed restriction being calculated by step S07, on the other hand, in the situation that entering step S103 from step S101, till engine speed is reduced to the rotating speed lower than rotating speed restriction, so can prevent that the excessive temperature of magnet 21 from rising.

In step S11, the temperature of the magnet 21 based on from 33 inputs of magnet temperature operational part is calculated the instruction of lighting sending to the overheated warning light 17 of magnet in lighting ordering calculation portion 42.

Figure 10 means the diagram of circuit of the details of step S11.In step S111, judge that whether the temperature of the magnet 21 being calculated by step S04 is as more than specified value.In the situation that determine the temperature of magnet 21 in step S111, be more than specified value, enter step S112, light the overheated warning light 17 of magnet.Thus, impel driver to carry out and reduce vehicle, be the running of engine speed, thereby can prevent that the excessive temperature of magnet 21 from rising.On the other hand, the in the situation that of determining not enough specified value in step S111, skips steps S112, finishes the processing of Figure 10.

Like this, in the situation that the temperature of magnet 21 has surpassed specified value, light the overheated warning light 17 of magnet, impel driver to reduce the speed of a motor vehicle.As specified value now, for example, be made as with respect to ceiling temperature Tmmax and there is temperature more than needed.Thus, can avoid the sense of discomfort that driver is caused in beyond thought moment limiting engine torque or engine speed, bring to driver.In addition,, owing to can impelling driver to carry out the running that reduces motor torque or engine speed, therefore can avoid the excessive temperature of coil 26 or magnet 21 to rise.

That crosses as mentioned above is such, in the 1st embodiment, the 1st torque limitation portion 35 is set as shown in Figure 6, the 2nd torque limitation portion 37, rotating speed limiting unit 38 and balancing moment operational part 39, being configured to output makes motor torque become the following such torque instruction of the 1st torque limitation the 2nd torque limitation following and the 2nd torque limitation portion 37 of the 1st torque limitation portion 35, and output makes engine speed become the following such braking force instruction of rotating speed restriction of rotating speed limiting unit 38, so can prevent the excessive rising of the temperature of coil 26 and the temperature of magnet 21.

For example, in low vehicle speeds, in precipitous climbing in the situation that, need large motor torque, coil 26 becomes high temperature.If continue to travel under this situation, for coil 26 is protected from excessive temperature rises, the running in the 1st limited field is the region of high torque (HT) is restricted.Thereby, continue lower than the running under the torque of the 1st limited field.Wherein, in this case because engine speed is little, so magnet 21 is difficult for becoming high temperature.Then, in the situation that switching to smooth road from precipitous climbing, at this moment between point because magnet 21 be not high temperature, so can realize travelling in the high rotary area of low torque, can continue to travel.

In addition,, in the situation that vehicle high-speed cruises in smooth road, because engine speed is large, so magnet 21 becomes high temperature.But motor torque is little, coil 26 is difficult for becoming high temperature.Under this situation, if continue to travel, for magnet 21 is protected from excessive temperature rises, in the present embodiment, as described above using torque instruction as balancing moment.Thus, at the 2nd limited field, be that running in the high rotary area of low torque is restricted, continue the following running of rotating speed restriction.

In addition, it is in rotor 20 that magnet 21 is embedded in swivel, therefore be difficult to by directly measurements such as temperature sensors.For this reason, in the present embodiment, the temperature of magnet 21 is calculated in the heating of the driving engine 2 that control algorithm portion 8 is calculated according to the operative condition by driving engine 2.Thus, the sensor of detected temperatures need not be set, just can estimate to be embedded in the temperature of the magnet 21 in swivel.Certainly, not via slip ring, also can by temperature sensor, directly measure the temperature of magnet 21, under these circumstances, calculated temperature can be used as the temperature of magnet 21.

-2 embodiments-

Figure 11～14th, illustrates the figure of the 2nd embodiment of the present invention.Figure 11 means the figure of the concise and to the point formation of the engine control unit in the 2nd embodiment, and dotted arrow represents flowing of signal.In addition, for the key element identical with the key element shown in Fig. 1, give same label, and describe centered by difference.

The engine control unit that Figure 11 records possesses the change-speed box 50 to modified roll mechanism 5 by the transmission of power of driving engine 2 generations.The ratio that change-speed box 50 can change the rotating speed of driving engine 2 and drive wheel 6 is converter speed ratio.By changing the converter speed ratio of change-speed box 50, thereby can make driving engine 2 turn round in more high efficiency operation point, and the excessive temperature of magnet 21 rise when, can reduce engine speed.

Figure 12 means the block diagram of the engine control in the 2nd embodiment.Figure 13 means the diagram of circuit of the engine control procedures of the 2nd embodiment.Utilize these figure that the engine control action in the 2nd embodiment is described.In addition, for the key element identical with the key element shown in Fig. 6, Fig. 7, give same label, and describe centered by difference.

The CPU of control algorithm portion 8 has formed the engine control piece shown in Figure 12 by the form of software of microcomputer, repeatedly carries out engine control procedures Figure 13 shown in during starting at ignition key switch (not shown).In the diagram of circuit of Figure 13, replace the step S01 of the diagram of circuit shown in Fig. 7 and the processing of having appended step S21～S23, the processing of having appended step S24 between this external step S08 and step S09.

In step S21, the accelerator opening signal of output request operational part 60 based on from accelerator sensor 10 inputs, calculates the output request as vehicle.Because the output value request of the accelerator opening of accelerator pedal and vehicle is proportional, so will speed up device aperture, be converted into output value request.

In step S22, the output request of torque requests transformation component 61 based on from 60 inputs of output request operational part, the best operation point of efficiency among the motor torque of selection realization output request and engine speed, is made as torque requests by the motor torque under this operation point.From output request till the corresponding relation of torque requests, as numerical value mapping graph, be kept in the memory device that control algorithm portion 8 possesses.In the processing of step S22, by retrieving this numerical value mapping graph, thus output request is transformed to torque requests.

In step S23, the output request of rotating speed request transformation component 62 based on from 60 inputs of output request operational part, select to realize the best operation point of efficiency among the motor torque of output request and engine speed (, the operation point of being selected by step S22), and by the engine speed under this operation point be made as rotating speed request.From output request till the corresponding relation of rotating speed request, as numerical value mapping graph, be kept in the memory device that control algorithm portion 8 possesses.In the processing of step S23, by retrieving this numerical value mapping graph, thus output request is transformed to rotating speed request.Can make thus driving engine 2 turn round in high efficiency operation point.

Follow-up step S02 to the processing of step S08 be the processing identical with the situation of the 1st embodiment.That is, in step S02, the braking force request that the drg aperture signal of braking force request operational part 31 based on from brake sensor 11 inputs calculates brake equipment 7.In step S03, the motor torque of heating operational part 32 based on from torque sensor 14 inputs and the heating that comes calculation engine 2 each portions from the engine speed of tachogen 15 inputs.In step S04, the temperature of the coil 26 of magnet temperature operational part 33 based on from coil temperature sensor 12 input, from the outside air temperature of external temperature sensor 13 inputs and the temperature of calculating magnet 21 from the heating of driving engine 2 each portions of heating operational part 32 inputs.

In step S05, the temperature of the coil 26 of the 1st torque limitation portion 35 that is arranged at the 1st limiting unit 34 based on from 12 inputs of coil temperature sensor, calculates for making coil 26 rise and obtain the 1st torque limitation of protection from excessive temperature.In step S06; the engine speed of the 2nd torque limitation portion 37 in the 2nd limiting unit 36 based on from tachogen 15 input and from the temperature of the magnet 21 of magnet temperature operational part 33 inputs, calculates for making magnet 21 rise and obtain the 2nd torque limitation of protection from excessive temperature.

In step S07, the temperature of the magnet 21 of the rotating speed limiting unit 38 in the 2nd limiting unit 36 based on from 33 inputs of magnet temperature operational part, calculates for making magnet 21 rise and obtain the rotating speed restriction of protection from excessive temperature.In step S08, the rotating speed restriction Nmax based on from 38 inputs of rotating speed limiting unit and the road grade of inputting from Slope Transducer 16 are calculated balancing moment in balancing moment operational part 39.

In step S24, the vehicle speed signal of gear-shift command operational part 63 based on from car speed sensor 9 input, from the rotating speed request of rotating speed request transformation component 62 inputs and from the rotating speed restriction of rotating speed limiting unit 38 inputs, calculates the gear-shift command sending to change-speed box 50.

Figure 14 means the diagram of circuit of the details of step S24.In step S241, judge that whether the rotating speed restriction being calculated by step S07 is as more than the rotating speed request being calculated by step S23.At step S241 medium speed, be restricted to rotating speed request above in the situation that, enter step S242, calculate gear-shift command so that engine speed becomes rotating speed request.Converter speed ratio is the input speed of change-speed box 50 and the ratio of output speed, proportional divided by the value of speed of a motor vehicle gained with engine speed.In step S242, the value to rotating speed request divided by speed of a motor vehicle gained converts, as gear-shift command.

At step S241 medium speed, be restricted to rotating speed request following in the situation that, enter step S243, calculate gear-shift command so that engine speed becomes rotating speed restriction.In step S243, the value to rotating speed restriction divided by speed of a motor vehicle gained converts, as gear-shift command.Thus, till the rotating speed restriction that engine speed is reduced to calculated by step S07, thereby can prevent that the excessive temperature of magnet 21 from rising.

In step S09, the torque requests of torque instruction operational part 40 based on from torque requests transformation component 61 input, from the 1st torque limitation of the 1st torque limitation portion 35 inputs and from the 2nd torque limitation of the 2nd torque limitation portion 37 inputs, calculate the torque instruction sending to inverter power supply 3.

In step S10, the balancing moment of braking force ordering calculation portion 41 based on from 39 inputs of balancing moment operational part and the braking force request of inputting from braking force request operational part 31, calculate the braking force request sending to brake equipment 7.In step S11, light the temperature of the magnet 21 of ordering calculation portion 42 based on from 33 inputs of magnet temperature operational part, calculate the instruction of lighting sending to the overheated warning light 17 of magnet.

In the 2nd embodiment, set as shown in Figure 5 the 1st limited field and the 2nd limited field, control and be arranged at the change-speed box 50 of vehicle as described above, thereby can prevent that the excessive temperature of coil 26 and magnet 21 from rising.

For example, as described above in the situation that vehicle high-speed cruises in smooth road, because engine speed is large, so magnet 21 becomes high temperature, but motor torque is little, therefore coil 26 is difficult for becoming high temperature.If continue to travel under this situation, in order to protect magnet 21, the 2 limited fields, be that the running of the high rotary area of low torque is restricted.Now, in the 2nd embodiment, by changing the converter speed ratio of change-speed box 50, when moving to the operation point of the low rotation of high torque (HT) on waiting output line, change motor torque, thereby not be used in regeneration side increase motor torque, just can reduce engine speed, thereby can avoid the excessive temperature of magnet 21 to rise.

In addition, in low vehicle speeds, in precipitous climbing in the situation that, need large motor torque, coil 26 becomes high temperature.But, because engine speed is little, so magnet 21 is difficult for becoming high temperature.If continue to travel under this situation, in order to protect coil 26, the 1 limited fields, be that running in the region of high torque (HT) is restricted.But because magnet 21 is not high temperature, so can remain in operation in the region of the high rotation of low torque.Thereby, by changing the converter speed ratio of change-speed box 50, wait the operation point that moves to the high rotation of low torque on output line, thereby need not reduce the excessive temperature rising that the speed of a motor vehicle just can suppress coil 26.

-3 embodiments-

Figure 15,16 means the figure of the concise and to the point formation of the engine control unit in the 3rd embodiment.In the 3rd embodiment, changed the formation (formation of control setup) of a part for the 1st above-mentioned embodiment.In addition, for the key element identical with the key element shown in Fig. 1, give same label, centered by difference, describe below.The dotted arrow of Figure 15 represents flowing of signal.

Control algorithm portion 8 in the engine control unit of Figure 15 is by sending the 1st control algorithm portion 70 of torque instruction to inverter power supply 3 and sending the 2nd control algorithm portion 71 of braking force instruction and form to brake equipment 7.The 1st control algorithm portion 70 and the 2nd control algorithm portion 71 consist of CPU, memory device separately separately, via communication path, are carrying out each other the exchange of receipt.So-called communication path refers to circuit pattern in the situation that the 1st control algorithm portion 70 and the 2nd control algorithm portion 71 are installed on same circuit substrate, in the situation that be installed in, refers to the wiring being arranged between circuit substrate on different circuit substrates.

In the 1st control algorithm portion 70, connecting the torque sensor 14 of the torque of the coil temperature sensor 12 of the temperature of magnetic test coil 26, the external temperature sensor 13 that detects outside air temperature, detection driving engine 2, the tachogen 15 of the rotating speed of detection driving engine 2 etc.In the 2nd control algorithm portion 71, connecting and detecting the car speed sensor 9 of the speed of a motor vehicle, the accelerator sensor 10 that detects accelerator pedal aperture, the brake sensor 11 of detection brake pedal aperture, the Slope Transducer 16 of detection road grade etc.

Figure 16 means the block diagram of the engine control in the 3rd embodiment.The CPU of the 1st control algorithm portion 70 and the 2nd control algorithm portion 71 has formed the engine control piece shown in Figure 16 by the form of software of microcomputer, during starting at ignition key switch (not shown) in execution engine control procedures.

The intrinsic computing of the 1st control algorithm portion 70 main execution driving engine 2.The 1st control algorithm portion 70 possesses heating operational part 32, magnet temperature operational part the 33, the 1st the 35, the 2nd torque limitation portion 37 of torque limitation portion, rotating speed limiting unit 38 and torque instruction operational part 40.The computing that the main execution of the 2nd control algorithm portion 71 and driving engine 2 are irrelevant.The 2nd control algorithm portion 71 possesses torque requests operational part 30, braking force request operational part 31, balancing moment operational part 39 and braking force ordering calculation portion 41.

The temperature of the coil 26 of the 1st control algorithm portion 70 based on from 12 inputs of coil temperature sensor, the outside air temperature from external temperature sensor 13 inputs, the motor torque from torque sensor 14 inputs, the engine speed of inputting from tachogen 15 and the torque requests of inputting from the 2nd control algorithm portion 71, calculate the rotating speed restriction sending to the 2nd control algorithm portion 71 and the torque instruction sending to driving engine 2.On the other hand, the vehicle speed signal of the 2nd control algorithm portion 71 based on from car speed sensor 9 input, from the accelerator opening signal of accelerator sensor 10 inputs, from the drg aperture signal of brake sensor 11 inputs, from the road grade of Slope Transducer 16 inputs and from the rotating speed restriction of the 1st control algorithm portion 70 inputs, calculate the torque requests sending to the 1st control algorithm portion 70 and the braking force request sending to brake equipment 7.

Like this, by formed individually the intrinsic computing of driving engine 2 operating part and with the operating part of the irrelevant computing of driving engine 2, thereby can improve the maintainability of program.For example,, in the situation that the specification of vehicle changes, the characteristic changing of driving engine 2, as long as only revise the 1st control algorithm portion 70.In addition, also can the 1st control algorithm portion 70 connect the overheated warning light 17 of magnet, in the situation that more than the temperature of magnet 21 becomes specified value, light the overheated warning light 17 of magnet.Thus, impel driver to carry out the running that reduces engine speed, thereby can prevent that the excessive temperature of magnet 21 from rising.

(1) that crosses as mentioned above is such, in the rotary electric machine controller of above-mentioned embodiment, torque instruction operational part 40 is calculated and the torque of output engine 2 becomes the temperature information based on coil 26 and the 1st torque limitation (L102 of Fig. 5) calculated is following and become the temperature information based on magnet 21 and the 2nd torque limitation (L201a of Fig. 5, the 201a ') rotating speed following, driving engine 2 of calculating becomes the temperature information based on magnet 21 and the following such torque instruction of rotating speed limits value (L201b of Fig. 5) of calculating.And, based on this torque instruction, drive control engine 2, thereby can prevent that the excessive temperature of magnet 21 and coil 26 from rising.In addition, in the situation that be equivalent to the balancing moment of the Vehicle Driving Cycle resistance under rotating speed limits value, be negative, the torque instruction of torque instruction operational part 40 output torques zero, 41 outputs of braking force ordering calculation portion produce the braking instruction of braking force.Its result, not be used in regeneration side increase motor torque and just engine speed can be reduced to below rotating speed limits value, thereby can prevent that the excessive temperature of magnet 21 from rising.

(2) in addition, in the situation that calculated balancing moment is less than the torque that is equivalent to braking force request, the braking force of generation based on balancing moment, in the situation that balancing moment be equivalent to the torque of braking force request more than, the braking force of generation based on braking force request, so can make the engine speed irrelevant with the size of braking force request be reduced to reliably below rotating speed limits value.

(3) and then, rotating speed request transformation component 62 as rotating speed operational part is calculated the request rotating speed with respect to driving engine 2 based on output request, at rotating speed limits value, be the in the situation that of asking rotating speed above, from gear-shift command operational part 63, to change-speed box 50 outputs, make the rotating speed of driving engine 2 become the such converter speed ratio of rotating speed limits value, in the situation that rotating speed limits value is less than request rotating speed, from gear-shift command operational part 63, to change-speed box 50 outputs, make the rotating speed of driving engine 2 become the such converter speed ratio of request rotating speed.Like this, by change-speed box 50, change converter speed ratio, can make thus engine speed be reduced to below rotating speed limits value, thereby can prevent that the excessive temperature of magnet 21 from rising.

(4) in addition, by the driving condition of the detected value based on temperature sensor and driving engine 2, estimate the temperature of magnet 21, thereby can estimate more accurately magnet temperature.As the driving condition of driving engine 2, both can use motor torque and engine speed, also can use size and the frequency of the alternating current that inputs to driving engine 2.

Each above-mentioned embodiment also can be respectively separately or combine and use.Its reason is, can separately or multiply each other and play the effect in each embodiment.In addition, only otherwise feature of the present invention is damaged, the present invention is just not limited to any mode of above-mentioned embodiment.

Label declaration

1: storage battery, 2: driving engine, 3: inverter power supply, 4: retarder, 5: modified roll mechanism, 6: drive wheel, 7: brake equipment, 8: control algorithm portion, 9: car speed sensor, 10: accelerator sensor, 11: brake sensor, 12: coil temperature sensor, 13: external temperature sensor, 14: torque sensor, 15: tachogen, 16: Slope Transducer, 17: the overheated warning light of magnet, 20: rotor, 21: magnet, 22: transmission shaft, 23: housing, 24: bearing, 25: shell, 26: coil, 27: stator, 30: torque requests operational part, 31: braking force request operational part, 32: heating operational part, 33: magnet temperature operational part, 34: the 1 limiting units, 35: the 1 torque limitation portions, 36: the 2 limiting units, 37: the 2 torque limitation portions, 38: rotating speed limiting unit, 39: balancing moment operational part, 40: torque instruction operational part, 41: braking force ordering calculation portion, 42: light ordering calculation portion, 50: change-speed box, 60: output request operational part, 61: torque requests transformation component, 62: rotating speed request transformation component, 63: gear-shift command operational part, 70: the 1 control algorithm portions, 71: the 2 control algorithm portions.

Claims

1. a rotary electric machine controller, is characterized in that, is mounted on vehicle, and this vehicle possesses: vehicular drive rotating machine, and it has the stator that is provided with coil and the rotor that is provided with magnet; DC-to-AC converter, it supplies with drive current to above-mentioned vehicular drive with rotating machine; And brake equipment,

Above-mentioned rotary electric machine controller possesses:

Torque instruction operational part, it calculates the torque instruction that is sent to above-mentioned DC-to-AC converter;

Braking instruction operational part, it calculates the braking instruction that is sent to above-mentioned brake equipment;

Coil temperature acquisition unit, it obtains the temperature information of above-mentioned coil;

Magnet temperature acquisition unit, it obtains the temperature information of above-mentioned magnet;

The 1st torque limitation portion, its temperature information based on above-mentioned coil is calculated the 1st torque limit value;

The 2nd torque limitation portion, its temperature information based on above-mentioned magnet is calculated the 2nd torque limit value;

Rotating speed restriction operational part, its temperature information based on above-mentioned magnet is calculated the rotating speed limits value of rotating machine for above-mentioned vehicular drive; With

Balancing moment operational part, it obtains the Vehicle Driving Cycle resistance under above-mentioned rotating speed limits value, calculates the balancing moment that is equivalent to this Vehicle Driving Cycle resistance,

The output of above-mentioned torque instruction operational part makes above-mentioned vehicular drive become above-mentioned the 1st torque limit value with the torque of the operation point of rotating machine and above-mentioned the 2nd torque limit value rotating speed following and above-mentioned operation point becomes above-mentioned rotating speed limits value such torque instruction below, and in the situation that being negative value, exports above-mentioned balancing moment the torque instruction of torque zero

Above-mentioned braking instruction operational part is in the situation that above-mentioned balancing moment is negative value, and output produces the braking instruction of braking force.

2. rotary electric machine controller according to claim 1, is characterized in that,

Above-mentioned rotary electric machine controller possesses braking force request operational part, and the sensor signal of this braking force request operational part based on being arranged at the brake sensor of above-mentioned vehicle calculated braking force request,

Above-mentioned braking instruction operational part,

In the situation that the above-mentioned balancing moment of being calculated by above-mentioned balancing moment operational part is less than the torque that is equivalent to above-mentioned braking force request, export the braking instruction for generation of the braking force based on above-mentioned balancing moment,

In the situation that above-mentioned balancing moment be equivalent to the torque of above-mentioned braking force request more than, output is for generation of the braking instruction of the braking force based on above-mentioned braking force request.

3. rotary electric machine controller according to claim 1 and 2, is characterized in that,

Above-mentioned vehicle possesses change-speed box, and this change-speed box carries out speed change to above-mentioned vehicular drive with the rotation of rotating machine and passes to the drive wheel of above-mentioned vehicle,

Above-mentioned rotary electric machine controller possesses:

Output request operational part, its sensor signal based on being arranged at the accelerator sensor of above-mentioned vehicle is calculated output request;

Rotating speed operational part, it asks to calculate for above-mentioned vehicular drive the request rotating speed with rotating machine based on above-mentioned output; With

Gear-shift command operational part, it is that above-mentioned request rotating speed is above in the situation that at above-mentioned rotating speed limits value, to above-mentioned change-speed box output, make above-mentioned vehicular drive become the such converter speed ratio of above-mentioned rotating speed limits value with the rotating speed of rotating machine, in the situation that above-mentioned rotating speed limits value is less than above-mentioned request rotating speed, to above-mentioned change-speed box output, make above-mentioned vehicular drive become the such converter speed ratio of above-mentioned request rotating speed with the rotating speed of rotating machine.

4. according to the rotary electric machine controller described in any one in claims 1 to 3, it is characterized in that,

The detected value of the temperature sensor of above-mentioned coil temperature acquisition unit based on the temperature of above-mentioned coil is detected obtains said temperature information,

Said temperature information and the above-mentioned DC-to-AC converter caused above-mentioned vehicular drive of above-mentioned magnet temperature acquisition unit based on being got by above-mentioned coil temperature acquisition unit estimates that with the driving condition of rotating machine the temperature of above-mentioned magnet is as the temperature information of above-mentioned magnet.

5. rotary electric machine controller according to claim 4, is characterized in that,

Above-mentioned vehicular drive is torque and the rotating speed of this vehicular drive with rotating machine with the driving condition of rotating machine.

6. according to the rotary electric machine controller described in any one in claim 1 to 5, it is characterized in that,

Above-mentioned rotary electric machine controller possesses the overheated warning of magnet portion, and the temperature information of the above-mentioned magnet of the overheated warning of this magnet portion based on being got from above-mentioned magnet temperature acquisition unit is warned more than above-mentioned magnet become set point of temperature.

7. rotary electric machine controller according to claim 1, is characterized in that,

Above-mentioned rotary electric machine controller possesses:

The 1st control algorithm unit, it at least has above-mentioned the 1st torque limitation portion, above-mentioned the 2nd torque limitation portion, above-mentioned rotating speed restriction operational part and above-mentioned torque instruction operational part; With

The 2nd control algorithm unit, it at least has above-mentioned balancing moment operational part and above-mentioned braking instruction operational part that above-mentioned rotating speed limits value based on sending out from above-mentioned the 1st control algorithm unit is calculated above-mentioned balancing moment.