Power Controls for Rotating Electric Machines
A technology of power supply control device and rotating electrical machine, which is applied in the direction of AC motor control, power consumption device, control system, etc., can solve problems such as being over-limited and increasing motor output, and achieve high-precision acquisition and prevent overheating.
Active Publication Date: 2016-11-30
HONDA MOTOR CO LTD
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Problems solved by technology
[0008] According to the power supply control device of the rotating electric machine involved in the above-mentioned prior art, since the output voltage of the boost converter (that is, the DC side voltage of the two inverters) is common to the two inverters, if according to If the output voltage of the boost converter is controlled by the magnet temperature of any one of the driving motor and the generating motor, even if the output voltage is suitable for one of the driving motor and the generating motor, it may not be suitable for the other output voltage. situation, for example, there is a risk of an undesirable situation such as an excessive rise in the magnet temperature in another motor or excessive limitation of the output of another motor.
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[0029] Next, a power supply control device for a rotating electrical machine according to an embodiment of the present invention will be described with reference to the drawings.
[0030] The power supply control device 10 for a rotating electrical machine according to this embodiment is mounted on, for example, figure 1 The hybrid electric vehicle 1 shown is, for example, a series type in which a driving motor (TRC) 11 is connected to a driving wheel W, and a crankshaft 12a of an internal combustion engine (ENG) 12 is connected to a generating motor (GEN) 13. hybrid.
[0031] The motors 11 and 13 are, for example, three-phase DC brushless motors, and are connected to first and second power drive units (PDU) 14 and 15 that control the motors 11 and 13 .
[0032] Each of the PDUs 14 and 15 is configured to include a PWM inverter including, for example, a bridge circuit in which switching elements such as a plurality of transistors are used for bridge connection, and is based o...
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The invention provides a power supply control device for a rotating electrical machine, comprising: a TRC optimum voltage output unit (21) and a GEN optimum voltage output unit (22), which obtain the TRC optimum voltage and the GEN optimum voltage; usually target voltage output a section (23) that sets a normal target voltage commonly applied by the DC / DC converter to the running motor system and the generating motor system based on the highest voltage among the TRC optimum voltage and the GEN optimum voltage; and The temperature protection target voltage output unit (24) and the target voltage output unit (25), wherein the state in which the difference ΔV between the TRC optimum voltage and the GEN optimum voltage is equal to or greater than a predetermined value lasts for a predetermined time or longer, and the ATF temperature When the temperature is equal to or higher than the predetermined temperature, the voltage commonly applied to the running motor system and the generating motor system is limited to be lower than the normal target voltage.
Description
technical field [0001] The invention relates to a power control device for a rotating electrical machine. [0002] this application claims priority based on Japanese Patent Application No. 2012-109544 for which it applied on May 11, 2012, and uses the content here. Background technique [0003] Conventionally, for example, a motor for driving driving a vehicle, a motor for generating electricity connected to an internal combustion engine of the vehicle, an inverter based on pulse width modulation for controlling each motor, and a DC power supply are known. In a series-type hybrid vehicle in which the DC voltage is boosted and supplied to the boost converter of each inverter, for each motor, the output voltage of the boost converter is lowered according to the temperature of the magnet of each motor. A power supply control device for a rotating electrical machine that lowers the temperature of a magnet (see, for example, Patent Document 1). [0004] prior art literature ...
Claims
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IPC IPC(8): H02P27/06B60L3/00
Inventor 菊地健司伊藤嘉启
Owner HONDA MOTOR CO LTD