摘要:
In a motor drive control system configured to include a converter capable of stepping up the voltage, when the locked state of MG2 operating as an electric motor does not occur (NO in S130), a voltage command value VHref for the converter output voltage is set according to respective required voltages of MG1 operating as an electric generator and MG2 (S140). In contrast, when the locked state of MG2 occurs (YES in S130), the voltage command value VHref is set to a limit voltage Vlmt or less for limiting the voltage step-up by the converter (S150, S180). When the locked state occurs, the converter output voltage is decreased and accordingly the DC voltage switched by the inverter is lowered, so that a switching loss at the switching device forming a part of the inverter is reduced and the temperature increase due to the heat generation can be suppressed.
摘要:
In a motor drive control system configured to include a converter capable of stepping up the voltage, when the locked state of MG2 operating as an electric motor does not occur (NO in S130), a voltage command value VHref for the converter output voltage is set according to respective required voltages of MG1 operating as an electric generator and MG2 (S140). In contrast, when the locked state of MG2 occurs (YES in S130), the voltage command value VHref is set to a limit voltage Vlmt or less for limiting the voltage step-up by the converter (S150, S180). When the locked state occurs, the converter output voltage is decreased and accordingly the DC voltage switched by the inverter is lowered, so that a switching loss at the switching device forming a part of the inverter is reduced and the temperature increase due to the heat generation can be suppressed.
摘要:
The power supply system includes a first DC power source, a second DC power source, and a power converter having a plurality of switching elements and reactors. The power converter is configured to be switchable, by the control of the plurality of switching elements, between a parallel connection mode in which DC voltage conversion is executed with the DC power sources connected in parallel with a power line and a series connection mode in which DC voltage conversion is executed with the DC power sources connected in series with the power line. Each of the switching elements is arranged to be included both in a power conversion path between the first DC power source and the power line PL and a power conversion path between the second DC power source and the power line.
摘要:
An apparatus for controlling a boost converter is provided with: an operating device provided with a proportional element, an integral element and a derivative element, the derivative element being configured as a bandpass filter, the operating device calculating a PID controlled variable; a controlling device for controlling the output voltage of the boost converter on the basis of the calculated PID controlled variable; a judging device for judging whether or not loss suppression on the direct current power supply is to be prioritized; and a switching device for switching an operation mode of the operating device from a variation suppression mode to a loss suppression mode if it is judged that the loss suppression is to be prioritized. In the loss suppression mode, a cutoff frequency of the bandpass filter is corrected to a lower frequency side at a lower rotational speed of the three-phase alternating current motor.
摘要:
A motor drive system control apparatus includes: a direct current power supply; a three-phase alternating current motor; a first power converter including switching circuits corresponding to each of three phases of the three-phase alternating current motor and a smoothing condenser disposed electrically in parallel with the switching circuits; an estimating device for estimating peak generation timing in which a peak is generated in an inter-terminal voltage VH of the smoothing condenser on the basis of at least one of an operating condition of the three-phase alternating current motor; a switching condition of the switching circuits corresponding to each of the three phases; and a controlling device for controlling a drive condition of the first power converter so the inter-terminal voltage VH (or a VH peak) in the peak generation timing decreases, for a predetermined period from start timing set in a time domain before the estimated peak generation timing.
摘要:
A converter is disposed between a first battery and a power line for transmitting power inputted to and outputted from a motor for traveling. A second battery, on the other hand, is connected to the power line with a relay being interposed therebetween. A control unit controls the relay to be turned on or off in accordance with an operating state of the motor.
摘要:
An object of the present invention is to provide a motive power output apparatus including a motor with a permanent magnet and a motor without a permanent magnet. A boost device (10) is connected to a power storage device (B). A first drive device (30) is connected to the boost device (10). A first rotating electric machine (35) with a permanent magnet is connected to the first drive device (30). A second drive device (40) is connected to the power storage device (B). A second rotating electric machine (45) without a permanent magnet is connected to the second drive device (40). A third drive device (20) is connected in parallel to the first drive device (30). A third rotating electric machine (25) with a permanent magnet is connected to the third drive device (20). The second rotating electric machine (45) is formed of a reluctance motor or an induction motor. The first rotating electric machine (35) and the second rotating electric machine (45) of the present invention may be linked to wheels of a vehicle.
摘要:
When an electric vehicle outputs a torque instruction, firstly, a request torque is acquired and a judged whether the acquired request torque is positive or negative (S10) Regardless of the sign of the request torque, it is judged whether the eco-switch is ON (S12, S14) If the request torque has a positive sign and the eco-switch is OFF, a map A is selected (S20). If the eco-switch is ON, a map B which limits the maximum torque to a low value for the map A is selected (S22). If the request torque has a negative sign, a map C is selected regardless of the eco-switch ON/OFF state and the maximum torque is not limited (S24).
摘要:
An AC motor drive control device includes a control mode judgment unit that performs a judgment based on required voltage amplitude required by a synchronous AC motor, in order to switch units for applying voltage to the AC motor to one of a rectangular wave voltage phase control unit, an overmodulation control unit, and a PWM current control unit.
摘要:
A carrier frequency setting unit (64) sets a carrier frequency (FC) according to the torque command (TR) of a motor generator and the number of motor rotations (MRN). A PWM signal generation unit (68) generates phase modulation waves corresponding to respective phase voltage commands (Vu, Vv, Vw) and generates phase PWM signals (Pu, Pv, Pw) according to the magnitude relationship between each of the phase modulation waves and a carrier wave having the carrier frequency (FC). A PWM center control unit (66), when the carrier frequency (FC) is lower than a predetermined frequency, generates a PWM center correction value (ΔCE) for variably controlling a PWM center and outputs to the PWM signal generation unit (68).