JP3597591B2 - Motor drive - Google Patents

Motor drive Download PDF

Info

Publication number
JP3597591B2
JP3597591B2 JP7641895A JP7641895A JP3597591B2 JP 3597591 B2 JP3597591 B2 JP 3597591B2 JP 7641895 A JP7641895 A JP 7641895A JP 7641895 A JP7641895 A JP 7641895A JP 3597591 B2 JP3597591 B2 JP 3597591B2
Authority
JP
Japan
Prior art keywords
motor
battery
circuit
chopper
control
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.)
Expired - Lifetime
Application number
JP7641895A
Other languages
Japanese (ja)
Other versions
JPH08214592A (en
Inventor
征二 加藤
秀樹 城ノ口
雅己 平田
治彦 石原
Original Assignee
株式会社東芝
関西電力株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to JP6-301162 priority Critical
Priority to JP30116294 priority
Application filed by 株式会社東芝, 関西電力株式会社 filed Critical 株式会社東芝
Priority to JP7641895A priority patent/JP3597591B2/en
Publication of JPH08214592A publication Critical patent/JPH08214592A/en
Application granted granted Critical
Publication of JP3597591B2 publication Critical patent/JP3597591B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

Description

[0001]
[Industrial applications]
The present invention relates to a motor drive device that converts DC power of a battery into AC power by a drive circuit and supplies the AC power to the motor.
[0002]
[Prior art]
For example, FIG. 10 shows a conventional example of a driving device for driving a motor of an electric vehicle. That is, DC buses 2 and 3 are connected to the positive and negative terminals of a battery 1 composed of a nickel-based battery (nickel hydrogen battery, nickel cadmium battery), and six DC buses 2 and 3 are connected between the DC buses 2 and 3. The inverter circuit 6 is formed by bridging the transistors 4U to 4W and 5U to 5W. The output terminal of the inverter circuit 6 is connected to the input terminal of the motor 7. In this case, since the DC voltage of the battery 1 is directly applied to the inverter circuit 6, the output (rotation speed) of the motor 7 is controlled by performing PWM control on the inverter circuit 6.
[0003]
Further, when the battery 1 is discharged and the voltage drops, the electric power required to drive the motor 7 cannot be obtained. Therefore, the electric vehicle has conventionally been provided with an AC power supply from an external AC power supply to charge the battery. A charger including a transformer for transforming a power supply voltage and a rectifying and smoothing circuit for rectifying and smoothing an AC voltage from the transformer into a DC voltage is mounted.
[0004]
Further, since the battery 1 made of a nickel-based battery cannot release 100% of the charging power inside the battery 1 due to the memory effect, the remaining power of the battery 1 is conventionally transferred to the discharging resistor until the voltage reaches the lower limit voltage. A refresh operation for discharging is performed.
[0005]
[Problems to be solved by the invention]
The above-described conventional configuration has the following problems to be solved.
(A) In an electric vehicle, the maximum output required for the motor 7 in running is large, but the steady output is small. Naturally, the capacity of the motor 7 and the inverter circuit 6 is reduced according to the maximum output. Is set. In this case, in order to reduce the number of revolutions by the PWM control of the inverter circuit 6 when the motor 7 has a low output, it is necessary to make the PWM pulse width very small in order to lower the voltage applied to the motor 7. The applied voltage of the motor 7 contains many harmonic components, and the harmonic components cause a motor loss mainly consisting of iron loss in the motor 7, thereby deteriorating the efficiency during steady operation.
[0006]
(B) When the motor 7 changes from a high output to a low output, regenerative power is supplied from the motor 7 to the battery 1. Since the size is different, proper regenerative braking is not performed.
[0007]
(C) Since a charger having a transformer or the like is required to charge the battery 1, the manufacturing cost increases. In particular, the charger including the transformer requires a large installation space, which is disadvantageous for an electric vehicle. It is.
[0008]
(D) Since the remaining power is dissipated as Joule heat by the discharging resistor in order to refresh the battery 1, the energy efficiency is low, and a large discharging resistor needs to be provided. Discharging resistors require a large installation space and are disadvantageous for electric vehicles.
[0009]
The present invention has been made in view of the above circumstances, and a first object of the present invention is to provide a motor driving device capable of improving the efficiency of the motor during steady operation.
[0010]
A second object of the present invention is to provide a motor drive device capable of performing smooth regenerative braking at the time of regenerative braking of the motor regardless of the magnitude of the motor generated voltage.
[0011]
A third object of the present invention is to provide a motor driving device that does not require a dedicated charger for charging a battery.
[0012]
A fourth object of the present invention is to provide a motor driving device which does not require a discharging resistor when refreshing a battery.
[0013]
[Means for Solving the Problems]
The motor driving device according to claim 1 has at least one arm formed by connecting two switching elements having flywheel diodes in series, an input terminal is connected to a battery, and an output terminal is connected to the motor. A driving circuit for controlling the energization of the motor by turning on and off the switching element; a chopper circuit in which two switching elements having flywheel diodes connected in parallel to the driving circuit are connected in series; A DC side reactor connected between a neutral point of the circuit and the battery, and a drive circuit and a switching element of the chopper circuit are provided to control on / off of the switching elements, and the chopper circuit supplies power from the battery to the drive circuit. When supplied, it can function as a boost chopper, and the power from the drive circuit to the battery When supply and control means for enabling acts as a step-down chopper , A full-wave rectifier circuit for full-wave rectification of an external AC power supply, with an AC-side reactor connected to the AC input terminal side, and a positive-side DC output terminal connected to the neutral of one arm of the drive circuit. And the negative DC output terminal is connected to the negative terminal of the battery, and the control means controls the on / off of the negative switching element of the one arm when the battery is charged by an external AC power supply, thereby increasing the voltage. Where it is configured to act as a chopper It has features.
[0017]
Claim 2 The motor driving device described above includes an AC-side current detection unit that detects a charging current flowing from the AC power supply to the drive circuit via the full-wave rectifier circuit, and the full-wave rectifier circuit includes two or more thyristors. The control means is configured to control the conduction phase of the thyristor to gradually increase from substantially zero based on the detection current of the AC-side current detection means.
[0018]
Claim 3 The motor driving device described above includes a DC-side current detection unit that detects a charging current flowing through a battery, and controls a control unit to turn on a chopper circuit that acts as a step-down chopper based on the detection current of the DC-side current detection unit. It is characterized in that the charging current is controlled to a predetermined value by gradually increasing the duty.
[0019]
Claim 4 The described motor driving device is characterized in that the control means is configured to control the charging current by adjusting the on / off duty of the step-up chopper when the detection current of the DC side current detection means does not reach a predetermined value. Having.
[0020]
Claim 5 In the motor driving device described above, a switching circuit formed by connecting two switching elements each having a flywheel diode in series to the driving circuit is connected, and a bidirectional three-terminal thyristor is used instead of the full-wave rectifier circuit. It has features in the configuration used.
[0021]
Claim 6 as well as 7 The motor driving device described above includes connecting a capacitor in parallel to the driving circuit, and controlling the control unit so that an AC current flowing from an external AC power supply follows a sine wave reference signal synchronized with the AC power supply voltage. Therefore, the power factor control is performed such that the voltage between the terminals of the capacitor is equal to or higher than the peak value of the AC power supply voltage.
[0022]
Claim 8 The motor driving device described above is characterized in that the control means is configured to perform current limiting by operating the chopper circuit as a step-down chopper when the voltage between the terminals of the capacitor is higher than the charging voltage of the battery. Having.
[0024]
Claim 9 In the motor driving device described above, the control means controls on / off of one arm of the driving circuit and the switching element of the switching circuit, so that the remaining energy of the battery is regenerated to the external AC power supply during the refresh operation of the battery. It is characterized in that it is configured as follows.
[0025]
Claim 1 0 The motor driving device described above is characterized in that the chopper circuit is configured by a transistor module including two transistors having a flywheel diode in parallel.
[0026]
Claim 1 1 The motor driving device described above is characterized in that a rotor constituted by a permanent magnet containing iron is used for the motor.
[0027]
[Action]
Claim 1 According to the motor drive device described above, when power is supplied from the battery to the motor via the drive circuit, the chopper circuit can function as a boost chopper, so that a voltage higher than the battery voltage is applied to the motor. Is possible, and the motor can be driven at a higher rotation speed than in the steady state. Also, when power is supplied from the drive circuit to the battery, the chopper circuit can function as a step-down chopper, so that when the motor is regeneratively braked or the battery is charged from an external power supply, the motor generated voltage or the external power supply voltage is reduced. Even if the voltage is higher than the battery voltage, the battery can be charged without damaging the circuit elements.
[0029]
And When the battery is charged, the external AC power supply is full-wave rectified by the full-wave rectifier circuit, and the full-wave rectified voltage is boosted by one arm acting as a boosting chopper. Even when the power supply voltage is lower than the battery voltage, the battery can be charged.
[0030]
Claim 2 According to the motor driving device described above, the control means controls the energization phase of the thyristor of the full-wave rectifier circuit to be gradually increased from substantially zero based on the detection current of the AC-side current detection means, so that charging is performed. Inrush current at the start can be suppressed.
[0031]
Claim 3 According to the motor driving device described above, when charging the battery, the control unit gradually increases the on-duty of the chopper circuit acting as the step-down chopper based on the detection current of the DC-side current detection unit. Can be controlled to a predetermined value, and stable charging can be performed.
[0032]
Claim 4 According to the motor driving device described above, when charging the battery, the control unit adjusts the on / off duty of the step-up chopper to reduce the charging current when the detection current of the DC current detection unit does not reach the predetermined value. Claims to control 3 It has the same effect as.
[0033]
Claim 5 According to the motor driving device described above, a switching circuit and a bidirectional three-terminal thyristor may be provided. 2 The same operation and effect as described above can be obtained.
Claim 6 as well as 7 According to the motor driving device described in (1), since the current flowing from the external AC power supply follows the reference signal, the power factor can be improved, and the capacitor is charged to a voltage equal to or higher than the peak value of the AC power supply voltage. Therefore, it is possible to control the charging current of the battery to be constant by the action with the step-down chopper.
[0034]
Claim 8 According to the motor driving device described above, the chopper circuit functions as a step-down chopper even when the voltage between the terminals of the capacitor is higher than the charging voltage of the battery. 7 The same effect can be obtained.
[0036]
Claim 9 According to the motor driving device described above, the remaining energy is regenerated to the AC power supply during the refresh operation of the battery, so that the energy efficiency is improved and the discharge resistor is not required.
Claim 1 0 According to the motor driving device described in (1), since the chopper circuit is configured by the transistor module, the configuration is simplified.
[0037]
Claim 1 1 According to the motor drive device described above, even if a rotor constituted by a permanent magnet containing iron is used for the motor, a rise in temperature due to iron loss of the rotor can be suppressed.
[0038]
【Example】
Hereinafter, a first embodiment in which the present invention is applied to an electric vehicle will be described with reference to FIGS.
In FIG. 1 showing the overall configuration, an electric vehicle is equipped with an induction motor 11 as a motor for traveling, which includes a stator 12 having a plurality of phases, for example, three-phase stator coils 12U, 12V, and 12W, and an electric motor. With no rotor. The electric vehicle is equipped with a rechargeable battery 13 composed of a nickel-based battery. The DC power from the battery 13 is converted into an AC power by a battery driving device and a battery driving device / motor driving device 14. The power is supplied to the induction motor 11.
[0039]
Now, a specific configuration of the battery driving device 14 and the battery driving device 14 will be described. The inverter circuit 15 as a driving circuit is configured by connecting three NPN transistors 16U, 16V, 16W and 17U, 17V, 17W, which are six switching elements, in a three-phase bridge, between the respective collectors and emitters. Is connected to flywheel diodes 18U, 18V, 18W and 19U, 19V, 19W, and thus has three arms 20U, 20V, and 20W. The input terminals 21a and 21b of the inverter circuit 15 are connected to DC buses 23 and 24 having a capacitor 22 connected between the lines, and the output terminals 25U, 25V and 25W are connected to the stator coils 12U and 12V of the induction motor 11, respectively. And 12W. The other terminals of the stator coils 12U, 12V and 12W are commonly connected.
[0040]
The chopper circuit 26 is composed of a transistor module having NPN transistors 27 and 28 as switching elements and flywheel diodes 29 and 30. In the transistor 27, the collector is connected to the DC bus 23 and the emitter is connected. Is connected to the collector of the transistor 28, the emitter of the transistor 28 is connected to the DC bus 24, and diodes 29 and 30 are connected between the collectors and the emitters of the transistors 27 and 28. An AC power supply terminal 31 which is a neutral point of the chopper circuit 26 is connected to a positive terminal of the battery 13 via a DC reactor 32, and a negative terminal of the battery 13 is connected to the DC bus 24.
[0041]
An output terminal 25U which is a neutral point of one arm 20U of the inverter circuit 15 is connected to a positive DC output terminal of the full-wave rectifier circuit 33, and a negative DC output terminal of the full-wave rectifier circuit 33 is connected to a DC bus 24. (Negative terminal of the battery 3). In this case, the full-wave rectifier circuit 33 is configured by bridge-connecting two thyristors 33a and 33b and two diodes 33c and 33d, and has an AC input terminal having an AC-side reactor 34 inserted on one side. Are connected to a plug 37 via the AC power supply lines 35 and 36.
[0042]
The DC voltage detector 38 is connected between the positive and negative terminals of the battery 13 and detects the voltage between the terminals of the battery 13. An AC current detector 39 serving as an AC-side current detecting means is provided on the AC power supply line 36, and detects a current flowing through the AC power supply line 36 (a current flowing through the reactor 34 as described later). . A charging current detector 40 serving as a DC side current detecting means is disposed on the DC bus 24 and detects a charging current flowing through the battery 13. Note that the AC current detector 39 and the charging current detector 40 are configured by Hall element type current transformers capable of detecting both AC current and DC current. The zero-cross point sensor 41 composed of a photocoupler is provided between the DC power supply lines 35 and 36.
[0043]
The control circuit 42, which is a control means, is mainly composed of a microcomputer, and each of its input ports includes a DC voltage detector 38, an AC current detector 39, a charging current detector 40, and a zero cross point sensor 41. Output terminals are connected, and respective output ports are connected to bases (gates) of transistors 16U to 16W and 17U to 17W of the inverter circuit 15 and transistors 27 and 28 of the chopper circuit 26, respectively. Although not shown, the two output ports of the microcomputer 42 are connected to the gates of the thyristors 33a and 33b of the full-wave rectifier circuit 33.
[0044]
Next, the operation of the present embodiment will be described with reference to FIGS.
(1) Driving the induction motor 11
First, the operation of the electric vehicle during traveling will be described. That is, the control circuit 42 generates energization timing signals for the transistors 16U to 16W and 17U to 17W of the inverter circuit 15, and sends a base signal (gate signal) to the transistors 16U to 16W and 17U to 17W according to the energization timing signals. The transistors 16U to 16W and 17U to 17W are given on and off in a predetermined order. As a result, the inverter circuit 15 generates an AC voltage from the DC voltage of the battery 13 and supplies the AC voltage to the induction motor 11, so that the induction motor 11 rotates and the electric vehicle runs.
[0045]
Here, the motor rating is 160 (V), 10 (KW), i.e., 5000 (rpm), 20 (Nm) during steady state (frequently used rotation speed and torque), and 320 (Nm) at maximum output. V), 40 (KW), that is, 10,000 (rpm), 40 (N · m) are required, as shown in FIG. 2, 5000 (rpm), 20 (N · m) as the induction motor 11. Is prepared, and a battery of 160 (V) is selected as the battery 13.
[0046]
When rotating the induction motor 11 at 5000 (rpm), which is a steady state, the control circuit 42 keeps the transistors 27 and 28 of the chopper circuit 26 turned off. Therefore, the capacitor 22 is charged so that the voltage between terminals becomes the battery voltage 160 (V), and this is applied to the inverter circuit 15. Then, the control circuit 42 turns on and off the transistors 16U to 16W and 17U to 17W of the inverter circuit 15 so that the induction motor 11 rotates at 5000 (rpm). At this time, the PWM duty is 100 (%). ). Therefore, the voltage applied to the induction motor 11 is 160 (V).
[0047]
When rotating the induction motor 11 at a rotation speed lower than 5000 (rpm), the control circuit 42 performs PWM control on the transistors 16U to 16W or 17U to 17W of the inverter circuit 15 to apply the voltage to the induction motor 11. Is controlled so as to be a low voltage corresponding to the rotation speed.
[0048]
When rotating the induction motor 11 at a rotation speed higher than 5000 (rpm), the control circuit 42 first turns on the transistor 28 of the chopper circuit 26. As a result, current flows through the reactor 32 through the path of the positive terminal of the battery 13, the reactor 32, the transistor 28, and the negative terminal of the battery 13, so that electromagnetic energy is accumulated. Thereafter, the control circuit 42 turns off the transistor 28 of the chopper circuit 26, the electromagnetic energy stored in the reactor 32 is stored in the capacitor 22 via the flywheel diode 29, and the voltage between terminals of the capacitor 22 becomes 160 The voltage becomes higher than (V).
[0049]
For example, when the rotation speed of the induction motor 11 is set to 7500 (rpm), the on / off duty of the transistor 28 of the chopper circuit 26 is controlled so that the voltage between the terminals of the capacitor 22 becomes 240 (V). I do. When the rotation speed of the induction motor 11 is set to 10000 (rpm), which is the maximum output, the on-off duty of the transistor 28 of the chopper circuit 26 is controlled to make the terminal voltage of the capacitor 22 320 (V). The pressure is increased so that
[0050]
That is, the chopper circuit 26 operates as a boost chopper. When the chopper circuit 26 operates as a boost chopper, the control circuit 42 determines whether the PWM duty of the transistors 16U to 16W or 17U to 17W of the inverter circuit 15 is high. Is controlled to be 100 (%). Therefore, the terminal voltage of the capacitor 22 boosted by the chopper circuit 26 is applied to the induction motor 11 through the inverter circuit 15.
[0051]
(2) Regenerative braking of the induction motor 11
When the output of the induction motor 11 shifts from high output (high rotation speed) to low output (low rotation speed), the induction motor 11 performs regenerative braking. That is, the control circuit 42 turns on the transistor 27 of the chopper circuit 26, so that the regenerative current from the induction motor 11 is supplied to the flywheel diodes 18 U to 18 W and 19 U to 19 W of the inverter circuit 15 and the chopper circuit 26. The current flows to the battery 13 via the transistor 27.
[0052]
In this case, since the generated voltage of the induction motor 11 is proportional to the rotation speed at this time, the motor generated voltage is higher than the battery voltage of 160 (V). Therefore, at the time of this regenerative braking, the control circuit 42 detects the charging current (regeneration current) Ib for the battery 13 with the charging current detector 40, and when this exceeds a predetermined value, turns off the transistor 27 of the chopper circuit 26. Conversely, when the charging current Ib is equal to or less than the predetermined value, the control is performed so that the transistor 27 is turned on. Therefore, in this case, the chopper circuit 26 operates as a step-down chopper.
[0053]
When the voltage generated by the induction motor 11 is lower than 160 (V), which is the charging voltage of the battery 13, during regenerative braking of the induction motor 11, the control circuit 42 determines which of the arms 20 U to 20 W of the inverter circuit 15. The transistors 17U to 17W on the negative side are turned on, and then the transistors 17U to 17W are turned off, thereby increasing the voltage supplied from the inverter circuit 15 to the battery 13. Therefore, the inverter circuit 15 acts as a step-up chopper.
[0054]
(3) Charging of the battery 13
When the battery 13 is discharged and the voltage drops, power required to drive the induction motor 11 cannot be obtained. In this case, the battery 13 is charged from an external AC power supply. That is, when the insertion plug 37 is inserted and connected to a power outlet (not shown) serving as a 100 (V) commercial power supply as an external AC power supply, the control circuit 42 automatically switches to the charging mode. , One arm 20U of the inverter circuit 15, the chopper circuit 26, and the full-wave rectifier circuit 33.
[0055]
That is, when the insertion plug 37 is inserted and connected to the power outlet, the zero-cross point sensor 41 is supplied with the AC power supply voltage Vac as shown in FIG. 4A and FIG. ), The output signal S of a rectangular wave which becomes a low level with a positive (+) half-wave and a high level with a negative (-) half-wave is output and supplied to the control circuit 42. When the control circuit 42 detects that the output signal S from the zero-cross point sensor 41 repeats a low level and a high level, it determines that charging is to be started, and the transistor 17U of one arm 20U of the inverter circuit 15 and the chopper circuit 26 The transistors 16U to 16W and 17V and 17W other than the transistor 27 are turned off. Further, as shown in FIG. 5B, the control circuit 42 detects the zero-cross point of the AC power supply voltage Vac from the rise and fall of the output signal S from the zero-cross point sensor 41.
[0056]
When detecting the zero-cross point of the AC power supply voltage Vac, the control circuit 42 performs PLL control based on the zero-cross point to generate a sine wave reference (voltage) signal VR synchronized with the AC power supply voltage Vac, as shown in FIG. create. The control circuit 42 determines the polarity of the AC power supply voltage Vac from the reference signal VR, and performs the following control based on this.
[0057]
When the control circuit 42 determines that charging is performed using an external AC power supply, the control circuit 42 starts an initial charging operation. That is, the control circuit 42 turns on the transistor 27 of the chopper circuit 26 and turns on the transistor 17U of one arm 20U in both the positive (+) half wave and the negative (-) half wave of the AC power supply voltage Vac. The control circuit 42 first supplies a gate signal to the thyristor 33b of the full-wave rectifier circuit 33 near the zero cross point where the AC power supply voltage Vac (see FIG. 4A) changes from a negative half-wave to a positive half-wave. Accordingly, the conduction phase of the thyristor 33b becomes substantially zero as shown in FIG. Thereafter, as shown in FIG. 4B, the control circuit 42 controls the gate signal applied to the thyristors 33a and 33b so that the conduction phase of the thyristors 33a and 33b gradually increases.
[0058]
Thus, during a period in which the thyristor 33a or 33b is on, a current flows through the reactor 34 and electromagnetic energy is accumulated in the reactor 34, so that no gate signal is given to the thyristor 33a or 33b and the thyristor 33a or 33b is synchronized with the gate signal. When the transistor 17U is turned off, the electromagnetic energy is supplied to the battery 13 via the capacitor 22, and the battery 13 is charged with the boosted voltage. The power supply current Iac gradually increases as shown in FIG. The principle of charging the battery 13 will be described later. The charging current Ib for the battery 13 is detected by the charging current detector 40 and provided to the control circuit 42. When the charging current Ib reaches a predetermined value, the control circuit 42 shifts to the next normal charging operation. I do.
[0059]
That is, when the AC power supply voltage Vac is a positive (+) half-wave, the control circuit 42 first turns on the transistor 17U of one arm 20U of the inverter circuit 15 and turns on the thyristor 33b of the full-wave rectifier circuit 33. Turn on. As a result, the AC power supply current Iac flows through the reactor 34 through the path of the thyristor 33b, the transistor 17U, the diode 33c, and the reactor 34, and the reactor 34 stores electromagnetic energy. The AC power supply current Iac flowing through the reactor 34 is detected by the AC current detector 39 and supplied to the control circuit 42 as a detected current Id. Note that the detection current Id is actually converted to a voltage and given to the control circuit 42, but is described here as the detection current Id for convenience of explanation.
[0060]
When the detection current Id increases due to the continuation of the ON state of the transistor 17U and becomes larger than the reference signal VR, the control circuit 42 turns off the transistor 17U and turns on the transistor 27. Thereby, the electromagnetic energy accumulated in the reactor 34 is supplied to the capacitor 22 via the thyristor 33b and the flywheel diode 18U, and further supplied to the battery 13 via the transistor 27, and the voltage of the battery 13 is boosted. Charged with voltage.
[0061]
Thereafter, when the detection current Id of the AC current detector 39 decreases and becomes smaller than the reference signal VR, the control circuit 42 turns on the transistor 17U again. Hereinafter, the same operation is repeated. Therefore, the gate signal Sy applied to the transistor 17U is as shown in FIG.
[0062]
When the AC power supply voltage Vac is a negative (-) half wave, the control circuit 42 turns on the transistor 17U of one arm 20U and turns on the thyristor 33a. The on / off operation of the transistors 17U and 27 in this case is the same as described above. Therefore, the gate signal Sz applied to the transistor 17U is as shown in FIG.
[0063]
That is, as shown in FIG. 5 (f), the control circuit 42 turns on and off the transistor 17U so that the detection current Id follows the reference signal VR, whereby the detection current Id is reduced to the AC power supply voltage Vac. The AC power supply current Iac is controlled as shown in FIG. 5 (g).
[0064]
Thus, the voltage between the terminals of the battery 13 is detected by the DC voltage detector 38 and supplied to the control circuit 42. When the voltage between the terminals of the battery 13 reaches the specified value, the control circuit 42 When the charging is determined to be completed, the transistors 17U and 27 and the thyristors 33a and 33b are turned off, and a not-shown alarm is operated to notify the completion of charging.
[0065]
As described above, according to the present embodiment, when the induction motor 11 is driven, the chopper circuit 26 functions as a step-up chopper, and the inverter circuit 15 is PWM-controlled. Can be rated at the time of steady operation, and the efficiency can be improved. Also, at the time of regenerative braking of the induction motor 11, the chopper circuit 26 is operated as a step-down chopper or the inverter circuit 15 is operated as a step-up chopper according to the generated voltage of the induction motor 11. Can be smoothly performed.
[0066]
Further, at the time of charging the battery 13, an external AC power supply is connected via a reactor 34 between the output terminal 25U of one arm 20U of the inverter circuit 15 as a drive circuit and the negative terminal of the battery 13, and the transistors 17U and 27 Are turned on and off, an electric current flows intermittently from an external AC power supply in the reactor 34 to accumulate electromagnetic energy, and the electromagnetic energy is transmitted to the battery 13 via one arm 20U and the chopper circuit 26. Given and this will be charged.
[0067]
Therefore, unlike the related art, the battery 13 can be charged only by the control of the control circuit 42 by additionally providing the chopper circuit 26 without using a dedicated charger having a transformer having a large weight and volume. Therefore, the manufacturing cost can be reduced by that much, and the load in the machine room of the electric vehicle can be reduced in size and weight, and the traveling distance per charge can be lengthened. Conversely, the reduction in size and weight can be achieved. Since the number of batteries 13 can be increased as much as the intended amount, the travel distance per charge can be increased. Further, even if an external power supply having a lower or higher voltage than the 160 (V) rated battery 13 is used, the battery 13 can be easily charged, which is extremely advantageous for the user. is there.
[0068]
Further, when charging the battery 13, if the external power supply is an AC power supply, the control circuit 42 detects a zero-cross point of the AC power supply voltage Vac based on the output signal of the zero-cross point sensor 41, and based on this, A reference signal VR synchronized with the AC power supply voltage Vac is obtained, and the detection current Id of the AC current detector 39 for detecting the AC power supply current Iac follows the reference voltage VR.
[0069]
Therefore, even if the boosting reactor 34 is used, the power factor improvement control of the AC power supply can be performed, the power supply harmonics can be reduced, and the charging current for the battery 13 can be controlled at the same time. .
[0070]
Further, when charging the battery 13, the control circuit 42 controls the energization phase of the thyristor 33a or 33b of the full-wave rectifier circuit 33 provided on the charging path of the battery 13 to gradually increase from substantially zero. Since the initial charging operation is performed, rapid charging of the battery 13 can be prevented, and the battery 13 is not adversely affected.
[0071]
In the above embodiment, when the battery 13 is charged, the capacitor 22 is charged to a voltage of 160 (V) or more (for example, 300 (V)) as the battery voltage, and the transistor 27 of the chopper circuit 26 is connected to the AC current detector 39. Alternatively, the charging current of the battery 13 may be made constant by adjusting the on / off duty based on the detection current of the charging current detector 40.
[0072]
FIGS. 6 and 7 show a second embodiment of the present invention. The same parts as those in FIG. 1 are denoted by the same reference numerals, and only different parts will be described below.
That is, a switching circuit 43 is connected between the DC buses 23 and 24. The switching circuit 43 connects NPN transistors 44 and 45, which are switching elements having flywheel diodes 46 and 47 in parallel, as NPN transistors in series. It is configured. An output terminal 25U, which is a neutral point of one arm 20U of the inverter circuit 15, is connected to an AC power supply line 35 via a bidirectional three-terminal thyristor (hereinafter referred to as a triac) 48. The AC power supply terminal 48, which is a characteristic point, is connected to the AC power supply line 36.
[0073]
In FIG. 7, a worm 49b is formed on a rotating shaft 49a of the DC motor 49, and a worm gear 50a meshing with the worm 49b is provided on the movable contact plate 50. The contact portions 50b and 50c of the movable contact plate 50 The contact portions 51a and 52a of the fixed contact plates 51 and 52 come into contact with and separate from the contact portions 51a and 52a by the vertical movement thereof, and thus the contactor 53 is configured.
[0074]
The positive terminal of the battery 54, which is a DC power supply, is connected to the fixed contact piece a of the changeover switch 55 and the fixed contact piece b of the changeover switch 56. The negative terminal of the battery 54 is connected to the fixed contact piece b of the changeover switch 55 and the changeover piece. The movable contacts c and c of the changeover switches 55 and 56 are connected to the input terminals of the DC motor 49.
[0075]
6, the fixed contact plate 51 of the contactor 53 is connected to the positive terminal of the battery 13, and the fixed contact plate 52 is connected to the battery side terminal of the DC reactor 32.
[0076]
Thus, the operation of the induction motor 11, the regenerative braking of the induction motor 11, and the operation of charging the battery 22 are performed in the same manner as described above except that the triac 48 performs the operation instead of the thyristors 33 a and 33 b of the full-wave rectifier circuit 33. This is similar to the first embodiment.
[0077]
(4) Refreshing the battery 13
Now, the refresh operation of the battery 13 will be described. At this time, the plug 37 is plugged into a power outlet such as a single-phase 100 volt AC power supply, and a refresh switch (not shown) is operated to be turned on. As a result, the control circuit 42 switches from the drive mode of the induction motor 11 to the refresh mode of the battery 13.
[0078]
When the insertion plug 37 is connected to the power outlet, the zero-cross point sensor 41 outputs the output signal S as described above, whereby the control circuit 42 performs the PLL control as shown in FIG. Then, a sine wave reference (voltage) signal VR synchronized with the AC power supply voltage Vac is generated, and the control circuit 42 determines the polarity of the AC power supply voltage Vac from the reference signal VR, and based on this, The following control is performed.
[0079]
The control circuit 42 uses one arm 20U of the inverter circuit 15, the switching circuit 43, and the triac 48 in the refresh mode. That is, the control circuit 42 turns on the triac 48, and when the AC power supply voltage Vac is a positive (+) half wave, first turns on the transistor 16U of one arm 20U and the transistor 45 of the switching circuit 43. Thus, the AC current (the discharge current of the battery 13) is passed through the path of the positive terminal of the battery 13, the contactor 53, the diode 29, the transistor 16U, the , A regenerative current to the AC power supply), which is detected by the AC current detector 39 and supplied to the control circuit 42 as a detected current.
[0080]
When the detected current increases due to the continuation of the ON states of the transistors 16U and 45 and becomes larger than the reference signal VR, the control circuit 42 turns off the transistor 16U. Thereafter, when the detection current of the AC current detector 39 decreases and becomes smaller than the reference signal VR, the control circuit 42 turns on the transistor 16U again. Hereinafter, the same operation is repeated.
[0081]
When AC power supply voltage Vac is a negative (-) half wave, control circuit 42 turns on transistor 17U of one arm 20U and turns on transistor 44 of switching circuit 43. The on / off operation of the transistor 44 in this case is similar to that of the transistor 16U described above.
[0082]
As described above, according to the second embodiment, at the time of the refresh operation of the battery 13, the remaining power (remaining energy) of the battery 13 is obtained by the step-down chopper formed by the one arm 20U of the inverter circuit 15 and the switching circuit 43. Is regenerated to an external AC power source, so that it is not necessary to dissipate it as Joule heat by using a discharge resistor, unlike the conventional technology. Since no resistor is required, there is no need to secure the installation space in the electric vehicle, which is optimal for an electric vehicle with a small installation space.
[0083]
When the battery 13 is removed from the electric vehicle, for example, the movable contact plate 50 is turned on by turning on the contact pieces (ca) of the changeover switches 55 and 56 and rotating the DC motor 49 in one direction. As shown in FIG. 7, the contactor 53 is turned off, and when the battery 13 is installed in the electric vehicle, the contact (c-b) of the changeover switches 55 and 56 is turned on and the direct current is turned on. By rotating the motor 49 in the reverse direction, the movable contact plate 50 is lowered, and the contactor 53 is turned on. Thereby, the contactor 53 can be made a stable switch means without chattering due to vibration or the like.
[0084]
FIGS. 8 and 9 show a third embodiment of the present invention. The same parts as those in FIG. 1 are denoted by the same reference numerals, and different parts will be described below.
That is, in the third embodiment, a brushless motor 57 is used as a motor. The brushless motor 57 includes a stator 58 having a plurality of phases, for example, three-phase stator coils 58U, 58V and 58W, and a magnetic material containing iron. For example, a permanent magnet type rotor (not shown) using a magnetic material composed of neodymium-iron-boron (Nd-Fe-B). The stator coils 58U, 58V and 58W are star-connected, and one terminal of each is connected to the output terminals 25U, 25V and 25W of the inverter circuit 15.
[0085]
As is well known, the brushless motor 57 is provided with three position detecting elements such as Hall elements for detecting the rotational position of the rotor, and the control circuit 42 By performing a logical operation on the position detection signal, the energization timing signals for the transistors 16U to 16W and 17U to 17W of the inverter circuit 15 are generated. The other operations of the control circuit 42 are the same as those of the first embodiment. Therefore, even when the brushless motor 57 is used as the running motor of the electric vehicle, the same effects as those of the first embodiment can be obtained. By the way, if the rotor of the brushless motor 57 is formed of a permanent magnet using a magnetic material made of Nd-Fe-B, this type of permanent magnet has a high coercive force, and therefore has the advantage of being efficient and having a long life. .
[0086]
In this case, if a brushless motor is used as the conventional motor (FIG. 10) and a rotor similar to the rotor of the brushless motor 57 of the third embodiment is used, the voltage applied to the motor 7 is increased in the conventional example. Is changed only by the PWM control, so that a harmonic component included in the applied voltage causes an increase in iron loss due to iron contained in the permanent magnet of the rotor, which causes a problem that the temperature of the rotor significantly increases.
[0087]
On the other hand, according to the third embodiment, when the chopper circuit 26 operates as a step-up chopper so as to rotate the brushless motor 57 at a rotation speed of the steady state or higher, the control circuit 42 controls the transistor of the inverter circuit 15. Since 16U to 16W or 17U to 17W is controlled to have a PWM duty of 100 (%), iron loss of the rotor due to harmonic components of the applied voltage based on the PWM control is significantly reduced, and heat generation of the rotor is prevented as much as possible. Can be. Then, even when the brushless motor 57 is rotated at a rotation speed lower than the steady state rotation speed, the PWM duty can be made higher than the conventional PWM duty, so that iron loss due to harmonic components of the rotor can be reduced.
[0088]
FIG. 9 shows the rotor temperature characteristics obtained by the experiment of the present inventors. The voltages of the batteries 1 and 13 are both 330V.
The temperature characteristic A plotted by △ in FIG. 9 is the rotor temperature characteristic of the motor 7 when the electric vehicle is driven at 80 km / h by driving the motor 7 with the conventional motor driving device. The ratings of the motor 7 are 330 (V), 10000 (rpm), and 10 (Nm). The main circuit voltage of the motor driving device during driving is 330 (V), and the PWM duty is 30 (%). is there. In FIG. 9, the horizontal axis represents time (minutes), and the vertical axis represents temperature (deg).
[0089]
The temperature characteristic B plotted by x in FIG. 9 indicates the brushless motor 57 when the electric vehicle is driven at 80 km / h by driving the brushless motor 57 by the motor driving device 14 as shown in FIG. 5 shows the rotor temperature characteristics. The ratings of the brushless motor 57 are 660 (V), 10000 (rpm), and 10 (N · m). The main circuit voltage of the motor driving device 14 during driving is 330 (V), and the PWM duty is 60 (%). It is.
[0090]
As is clear from FIG. 9, the temperature characteristic B shows a good characteristic in which the temperature rise with the passage of time is low as compared with the temperature characteristic A. This is because the motor driving device 14 can raise the main circuit voltage of the inverter circuit 15 by causing the chopper circuit 26 to act as a boosting chopper, so that the brushless motor 57 having a rated voltage 660 (V) higher than the voltage of the battery 13 is used. This is because the PWM duty can be increased since the same speed as that of the related art can be obtained.
[0091]
That is, when the voltages of the batteries 1 and 13 are the same, to obtain the same rotation speed as the former by the brushless motor 57 whose rated voltage is twice the brushless motor 7, the PWM duty may be doubled. Therefore, the higher harmonic component contained in the PWM signal is reduced by the increase in the PWM duty, and accordingly, the heat generated by the core loss of the permanent magnet of the rotor of the brushless motor 57 is reduced.
[0092]
Due to the problem of temperature rise due to the iron loss, when a motor is driven by a conventional driving device, a permanent magnet made of, for example, ferrite was only used for the rotor of the motor, as described above in the third embodiment. According to this, even if a permanent magnet made of Nd-Fe-B containing iron is used for the rotor of the brushless motor 57, heat generation due to iron loss of the permanent magnet can be suppressed. Therefore, it is possible to use a magnetic material having a higher coercive force than ever before for the permanent magnet of the rotor, and it is possible to increase the efficiency of the brushless motor 57 and to extend the life thereof.
In the above embodiment, Nd-Fe-B is used as the magnetic material of the permanent magnet. However, the present invention is not limited to this, and any magnetic material containing iron may be used.
[0093]
In the above embodiment, the induction motor 11 or the brushless motor 57 is used as the motor. Alternatively, a two-phase motor, a DC motor with a brush, or a reluctance motor may be used. As a circuit, there is a circuit having only one arm (for example, a DC motor with a brush) formed by connecting two transistors, which are switching elements having a flywheel diode, in series. Therefore, as a driving circuit, one or more arms are used. What you have is the target.
[0094]
Further, in the above embodiment, the triac 48 is provided as the current-limiting switching element. Alternatively, two thyristors connected in anti-parallel may be provided, or two photo thyristors connected in anti-parallel may be provided. Alternatively, a photo triac may be provided.
[0095]
In addition, the present invention is not limited to the above-described embodiment, and can be applied to, for example, not only an electric vehicle but also any device that requires a motor driving device that drives a motor using a battery as a power source. Needless to say, the present invention can be appropriately modified and implemented without departing from the scope of the invention.
[0096]
【The invention's effect】
The present invention is as described above, and has the following effects.
Claim 1 According to the motor driving device described above, when power is supplied from the battery to the motor via the driving circuit, the chopper circuit can function as a step-up chopper, so that a voltage higher than the battery voltage is applied to the motor. Is possible, and the motor can be driven at a higher rotation speed than in the steady state, and the efficiency in the steady operation can be improved. When power is supplied from the drive circuit to the battery, the chopper circuit can function as a step-down chopper, so that when the motor is regeneratively braked or the battery is charged from an external power supply, the motor generated voltage or the external power supply voltage is reduced. If it was higher than the battery voltage And Even so, the battery can be charged smoothly without damaging the circuit elements.
[0098]
And When the battery is charged, the external AC power supply is full-wave rectified by the full-wave rectifier circuit, and the full-wave rectified voltage is boosted by one arm acting as a boosting chopper. It is not necessary to provide a dedicated charger for charging the battery, and the battery can be charged even when the AC power supply voltage is lower than the battery voltage.
[0099]
Claim 2 According to the motor driving device described above, the control means controls the energization phase of the thyristor of the full-wave rectifier circuit to be gradually increased from substantially zero based on the detection current of the AC-side current detection means, so that charging is performed. Inrush current at the start can be suppressed.
[0100]
Claim 3 According to the motor driving device described above, at the time of charging the battery, the control unit gradually increases the on / off duty of the chopper circuit acting as the step-down chopper based on the detection current of the DC current detection unit. Can be controlled to a predetermined value, and stable charging can be performed.
[0101]
Claim 4 According to the motor driving device described above, when charging the battery, the control unit adjusts the on / off duty of the step-up chopper to reduce the charging current when the detection current of the DC current detection unit does not reach the predetermined value. Claims to control 3 It has the same effect as.
[0102]
Claim 5 According to the motor driving device described above, a switching circuit and a bidirectional three-terminal thyristor may be provided. 2 The same operation and effect as described above can be obtained.
Claim 6 as well as 7 According to the motor driving device described in (1), since the current flowing from the external AC power supply follows the reference signal, the power factor can be improved, and the capacitor is charged to a voltage equal to or higher than the peak value of the AC power supply voltage. Therefore, it is possible to control the charging current of the battery to be constant by the action with the step-down chopper.
[0103]
Claim 8 According to the motor driving device described above, the chopper circuit functions as a step-down chopper even when the voltage between the terminals of the capacitor is higher than the charging voltage of the battery. 7 The same effect can be obtained.
[0105]
Claim 9 According to the motor driving device described above, the remaining energy is regenerated to the AC power supply during the refresh operation of the battery, so that the energy efficiency is improved and the discharge resistor is not required.
Claim 1 0 According to the motor driving device described in (1), since the chopper circuit is configured by the transistor module, the configuration is simplified.
[0106]
Claim 1 1 According to the motor driving device described above, since the motor uses a rotor constituted by permanent magnets containing iron, the efficiency of the motor can be increased, and the service life can be increased. The temperature rise of the rotor can be prevented as much as possible.
[Brief description of the drawings]
FIG. 1 is an electrical configuration diagram showing a first embodiment of the present invention.
FIG. 2 is a characteristic diagram of a motor (part 1).
FIG. 3 is a characteristic diagram of a motor (part 2);
FIG. 4 is a waveform chart of each part when the battery is charged (part 1).
FIG. 5 is a waveform diagram of each part when the battery is charged (part 2).
FIG. 6 is a view corresponding to FIG. 1, showing a second embodiment of the present invention;
FIG. 7 is a configuration diagram of a contactor.
FIG. 8 is a view corresponding to FIG. 1, showing a third embodiment of the present invention.
FIG. 9 is a diagram showing temperature characteristics of a rotor;
FIG. 10 is an electrical configuration diagram showing a conventional example.
[Explanation of symbols]
In the drawing, 11 is an induction motor (motor), 13 is a battery, 15 is an inverter circuit (drive circuit), 16U to 16W and 17U to 17W are transistors (switching elements), 18U to 18W and 19U to 19W are flywheel diodes, 20U to 20W are arms, 22 is a capacitor, 26 is a chopper circuit, 32 is a DC side reactor, 33 is a full-wave rectifier circuit, 33a and 33b are thyristors, 34 is an AC side reactor, 38 is a DC voltage detector, and 39 is AC. Current detector (AC side current detecting means), 40 is a charging current detector (DC side current detecting means), 41 is a zero cross point sensor, 42 is a control circuit (control means), 43 is a switching circuit, and 48 is bidirectional A three-terminal thyristor 57 indicates a brushless motor (motor).

Claims (13)

  1. An input terminal connected to a battery, an output terminal connected to a motor, and the motor being turned on / off by the switching element, the motor having at least one arm having two switching elements having a flywheel diode connected in series; A drive circuit for controlling the energization of
    A chopper circuit formed by connecting two switching elements having a flywheel diode connected in parallel to the driving circuit in series,
    A DC reactor connected between the neutral point of the chopper circuit and the battery,
    The drive circuit and the switching element of the chopper circuit are provided so as to be turned on and off.When the chopper circuit supplies power to the drive circuit from the battery, the chopper circuit can function as a boost chopper, and the power is supplied from the drive circuit to the battery. Control means that can act as a step-down chopper when supplying ;
    A full-wave rectifier circuit for full-wave rectification of an external AC power supply,
    The AC reactor is connected to the AC input terminal side of the full-wave rectifier circuit, the positive DC output terminal is at the neutral point of one arm of the drive circuit, and the negative DC output terminal is at the negative terminal of the battery. Connected
    The control means, when the battery due to external AC power charger, the motor of you, characterized in that it is configured to act as a step-up chopper by turning on and off the negative switching element of the one arm Drive.
  2. AC-side current detection means for detecting a charging current flowing from the AC power supply to the drive circuit via the full-wave rectifier circuit. The full-wave rectifier circuit includes two or more thyristors. gradually the motor driving device according to claim 1, wherein that you have been configured to control such that the larger a substantially zero current phase of the thyristor based on the detected current side current detection means.
  3. DC-side current detecting means for detecting a charging current flowing to the battery, wherein the control means gradually increases the on / off duty of the step-down chopper based on the detection current of the DC-side current detecting means and sets the charging current to a predetermined value. 2. The motor driving device according to claim 1, wherein the motor driving device is configured to perform the following control.
  4. Control means, when the detection current of the DC side current detecting means does not reach a predetermined value, wherein, characterized in that by adjusting the on-off duty of the step-up chopper has been configured to control the charging current Item 4. A motor driving device according to item 3 .
  5. Wherein the switching circuit formed by connecting two switching elements having flywheel diodes in parallel to the drive circuit in series are connected, instead of the full-wave rectifying circuit bidirectional three-terminal thyristor is found using The motor driving device according to claim 2, wherein
  6. Control means, driving of the motor according to claim 1, characterized in that it is configured to control so as to follow the sinusoidal reference signal synchronized to the AC power supply voltage alternating current flowing from the external AC power source apparatus.
  7. 7. The method according to claim 6 , wherein a capacitor is connected in parallel to the drive circuit, and the control means is configured to control the voltage between the terminals of the capacitor to be equal to or higher than the peak value of the external AC power supply voltage. Motor drive device.
  8. 7. The control device according to claim 6, wherein the control unit is configured to limit the current by operating the chopper circuit as a step-down chopper when the voltage between the terminals of the capacitor is higher than the charging voltage of the battery. 8. The motor driving device according to claim 7 .
  9. The control means is configured to control the on / off of one arm of the drive circuit and the switching element of the switching circuit so as to regenerate the remaining energy of the battery to an external AC power supply during a refresh operation of the battery. The motor driving device according to claim 5, wherein
  10. The motor driving device according to any one of claims 1 to 9, wherein the chopper circuit is configured by a transistor module including two transistors having a flywheel diode in parallel .
  11. The motor driving device according to any one of claims 1 to 10, wherein the motor uses a rotor configured by a permanent magnet containing iron .
  12. A motor having a rotor and a plurality of layers of stators,
    A battery serving as a power supply for the motor,
    The motor drive device according to claim 1, wherein the drive circuit controls power supply to the motor using power output from the battery .
  13. The motor, the motor driving device according to claim 12, wherein the Oh Rukoto in traction motor of an electric vehicle.
JP7641895A 1994-12-05 1995-03-31 Motor drive Expired - Lifetime JP3597591B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP6-301162 1994-12-05
JP30116294 1994-12-05
JP7641895A JP3597591B2 (en) 1994-12-05 1995-03-31 Motor drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7641895A JP3597591B2 (en) 1994-12-05 1995-03-31 Motor drive

Publications (2)

Publication Number Publication Date
JPH08214592A JPH08214592A (en) 1996-08-20
JP3597591B2 true JP3597591B2 (en) 2004-12-08

Family

ID=26417563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7641895A Expired - Lifetime JP3597591B2 (en) 1994-12-05 1995-03-31 Motor drive

Country Status (1)

Country Link
JP (1) JP3597591B2 (en)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3746334B2 (en) 1996-08-22 2006-02-15 トヨタ自動車株式会社 Permanent magnet type synchronous motor drive control apparatus and method
JP2001268900A (en) * 2000-03-22 2001-09-28 Masayuki Hattori Bi-directional step-up and step-down chopper circuit
JP4489238B2 (en) * 2000-03-29 2010-06-23 正行 服部 Electric motor control device
JP2002369309A (en) * 2001-06-12 2002-12-20 Railway Technical Res Inst Electric rolling stock system
KR20070055584A (en) 2001-08-02 2007-05-30 도요다 지도샤 가부시끼가이샤 Motor drive control apparatus
JP3692993B2 (en) 2001-10-04 2005-09-07 トヨタ自動車株式会社 Drive device and power output device
JP3632657B2 (en) 2001-12-20 2005-03-23 トヨタ自動車株式会社 Voltage converter
JP4111138B2 (en) * 2001-12-26 2008-07-02 トヨタ自動車株式会社 Electric load device, electric load device control method, and computer-readable recording medium storing a program for causing computer to execute electric load control
CA2470934C (en) 2002-01-16 2008-04-22 Toyota Jidosha Kabushiki Kaisha An apparatus and method for controlling a voltage converter
JP3661689B2 (en) 2003-03-11 2005-06-15 トヨタ自動車株式会社 Motor drive device, hybrid vehicle drive device including the same, and computer-readable recording medium storing a program for causing a computer to control the motor drive device
WO2004114511A2 (en) * 2003-06-05 2004-12-29 Toyota Motor Co Ltd Motor drive device, vehicle using the same, and computer-readable recording medium containing a program for causing a computer to execute control of voltage conversion
JP4120504B2 (en) 2003-07-30 2008-07-16 トヨタ自動車株式会社 Vehicle and vehicle control method
JP4220851B2 (en) * 2003-07-31 2009-02-04 トヨタ自動車株式会社 Voltage converter and computer-readable recording medium recording program for causing computer to execute voltage conversion
JP4103781B2 (en) * 2003-11-19 2008-06-18 トヨタ自動車株式会社 Abnormality monitoring device in load drive circuit
DE112005000294T5 (en) 2004-02-06 2007-02-22 Mitsubishi Denki K.K. Motor driving device
CN1973415B (en) 2004-09-22 2010-06-23 丰田自动车株式会社 Load driving circuit abnormality monitoring device and method
JP2006101675A (en) 2004-09-30 2006-04-13 Mitsubishi Electric Corp Motor drive
JP4665569B2 (en) 2004-11-30 2011-04-06 トヨタ自動車株式会社 Voltage converter and computer-readable recording medium recording program for causing computer to execute voltage conversion in voltage converter
JP4682740B2 (en) * 2005-08-08 2011-05-11 トヨタ自動車株式会社 Vehicle power supply
JP4367391B2 (en) 2005-09-01 2009-11-18 トヨタ自動車株式会社 Charge control device and electric vehicle
JP4552811B2 (en) * 2005-09-07 2010-09-29 三菱電機株式会社 Motor drive device
JP4517994B2 (en) 2005-09-29 2010-08-04 トヨタ自動車株式会社 Charge control device and electric vehicle
JP4483789B2 (en) * 2006-01-13 2010-06-16 日産自動車株式会社 Drive device for hybrid vehicle
JP4640200B2 (en) * 2006-02-10 2011-03-02 トヨタ自動車株式会社 Voltage conversion device and voltage converter control method
JP4232785B2 (en) 2006-02-23 2009-03-04 トヨタ自動車株式会社 Hybrid vehicle
JP4793225B2 (en) * 2006-11-07 2011-10-12 株式会社デンソー Inverter device
JP4799512B2 (en) * 2007-08-31 2011-10-26 三菱電機株式会社 Power converter and air conditioner using the same
JP4452735B2 (en) 2007-09-05 2010-04-21 本田技研工業株式会社 Boost converter control device and control method
JP4911323B2 (en) * 2008-02-27 2012-04-04 日産自動車株式会社 Vehicle power supply control device and power supply control method
JP4984331B2 (en) 2008-05-09 2012-07-25 株式会社デンソー Electric vehicle control device
JP2010011699A (en) * 2008-06-30 2010-01-14 Toyota Central R&D Labs Inc Power control device
WO2011013583A1 (en) * 2009-07-27 2011-02-03 太陽誘電株式会社 Motor drive device and electrically assisted vehicle provided therewith
JP5556677B2 (en) * 2010-03-08 2014-07-23 株式会社豊田自動織機 Battery charging circuit
KR101241237B1 (en) * 2010-12-22 2013-03-14 (주)엠피에스코리아 A Regenerative Brake Equipment Using Electric Double Layer Capacitor for Vehicle
WO2015011941A1 (en) * 2013-07-23 2015-01-29 アイシン・エィ・ダブリュ株式会社 Inverter device
JPWO2018043480A1 (en) * 2016-09-01 2019-06-24 国立大学法人 筑波大学 Load drive circuit, load drive system and load drive method

Also Published As

Publication number Publication date
JPH08214592A (en) 1996-08-20

Similar Documents

Publication Publication Date Title
WO2016076429A1 (en) Inverter control device and control device for vehicle
US8618771B2 (en) Electric powered vehicle, vehicle charge device and vehicle charge system
US8659182B2 (en) Power supply system and electric powered vehicle including power supply system, and method for controlling power supply system
DE60023317T2 (en) Control of an electrical release machine
US5373195A (en) Technique for decoupling the energy storage system voltage from the DC link voltage in AC electric drive systems
EP0718143B1 (en) Electric vehicle control system
KR101189237B1 (en) System and method of recharge for hybrid vehicle
EP2062801B1 (en) Power supply system with multiphase motor and multiphase inverter
JP4460708B2 (en) Permanent magnet motor control device that combines engine starter and generator
CN100411297C (en) Motor drive inverter control apparatus
DE60314292T2 (en) Voltage transformer apparatus, computer readable recording medium with subsequent program for making the computer to perform fault processing, and error processing method
US6075331A (en) Systems and methods for managing energy of electric power supply systems
KR0182338B1 (en) Method and apparatus for controlling a battery car
JP5138781B2 (en) Power converter
JP4116292B2 (en) Electric power generation system for hybrid vehicles
US7164253B2 (en) Motor drive control apparatus
KR100329077B1 (en) Driving apparatus of brushless motor for outdoor fan of airconditioner
US6486627B1 (en) Flywheel uninterruptible power source
US5710699A (en) Power electronic interface circuits for batteries and ultracapacitors in electric vehicles and battery storage systems
JP5206130B2 (en) Coil field type synchronous motor regeneration system and control method thereof
JP2712608B2 (en) Drive for electric vehicles
KR100541724B1 (en) power supply apparatus for motor and controlling method thereof
US7120037B2 (en) Power outputting device and vehicle mounting it, control method, storing medium and program for the power outputting device, drive device and vehicle mounting it, and, control method, storing medium and program for the drive device
US6700802B2 (en) Bi-directional power supply circuit
US6787931B2 (en) Starter generator for internal combustion engine

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040304

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040413

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040614

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20040831

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20040909

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20070917

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080917

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080917

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090917

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090917

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100917

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110917

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110917

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120917

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120917

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130917

Year of fee payment: 9

EXPY Cancellation because of completion of term