Simplified title:于交换磁阻抗机械或永久磁铁无刷直流马达驱动系统之驱动控制方法,设备及系统,电力转换及启动控制 METHOD, APPARATUS, AND SYSTEM FOR DRIVE CONTROL, POWER CONVERSION, AND START-UP CONTROL IN AN SRM OR PMBDCM DRIVE SYSTEM
Abstract in simplified Chinese:一种用于一交换磁阻马达或一永久磁铁无刷直流马达之电力转换器,其包含第一与第二部分电路,用以形成复数个传导电路而与该马达之第一和第二相位线圈共同作用。该控制器亦包含了一开关,该开关系可打开与关闭一第一传导电路,其中该第一传导电路系包含了该第一相位线圈,并借由打开与关闭该第一传导电路,以调整该马达之第一与第二相位线圈的能量供给。该开关之控制系借由调整该第一与第二相位线圈之能量供给,而提供了该马达之四象限操作模式。
Abstract:
The invention relates to a method for operating a switched reluctance motor (4), in particular for a motor vehicle drive, wherein a supply voltage (U DC ) is drawn from a DC voltage source (8), wherein, during a charging process, a phase winding (20a, 20b, 20c) of the reluctance motor (4) is charged with energy of the supply voltage, wherein, during a discharging process, the energy from the phase winding (20a, 20b, 20c) is discharge-transferred to a first energy store (26, 64), wherein, during an up-conversion process, the supply voltage (U DC ) is up-converted to an increased voltage level (U DC ') and is stored on a second energy store (26, 62), wherein, during a boost process, the phase winding (20a, 20b, 20c) is supplied with the stored energy of the energy stores, and wherein the up-conversion process is initiated depending on a rotational speed of the reluctance motor (4).
Abstract:
A voltage command value of a converter is set by executing the step (S100 to S140) of determining a candidate voltage of a system voltage VH as a converter output voltage in a voltage range from the minimum necessary voltage (VHmin) corresponding to induction voltage of a motor generator (MG11, MG2) and a maximum output voltage (VHmax) of the converter; the step (S150 to S165) of estimating power loss at the battery, converter, inverter and motor generator, at each candidate voltage, and calculating total sum of estimated power loss of the overall system; and the step (S170 to S190) of setting the voltage command value VH# based on the candidate voltage that minimizes the total sum of estimated power losses among the candidate voltages.
Abstract:
A power conversion device has an internal power supply switch configured of an n-channel MOSFET and a bias power supply switch connected in parallel with the internal power supply switch, wherein, when an output voltage of an internal power supply circuit is equal to or greater than a predetermined value when a power supply is started up, the bias power supply switch opens a current path, a step-up power supply circuit steps up and outputs a predetermined voltage based on a power supply start-up signal output by the internal power supply circuit, and the internal power supply switch opens a current path, and when the power supply is stopped, the step-up power supply circuit is stopped based on a stop signal output by the internal power supply circuit and the internal power supply switch closes the current path, and when the output voltage of the internal power supply circuit becomes lower than a predetermined value, the bias power supply switch closes the current path.
Abstract:
An interleaved bridgeless power factor correction (PFC) converter-based motor drive system is provided. The system includes a first inductor coupled to a second inductor. The coupled first and second inductors are coupled to a first input configured to be coupled to a first line of an alternating current (AC) power supply. The system also includes a third inductor coupled to a fourth inductor. The coupled third and fourth inductors are coupled to a second input configured to be coupled to a second line of the AC power supply. The system further includes a digital active power factor correction (PFC) controller configured to cause current in at least one of the coupled first and second inductors and the coupled third and fourth inductors to be interleaved.
Abstract:
An electric power tool (1) includes a power supply (120), a motor (30) capable of being driven in a forward rotation mode or a reverse rotation mode, and a voltage step-up unit (100) capable of performing a voltage step-up operation to raise a voltage supplied from the power supply (120) and supply a raised voltage (VO) to the motor (30). The voltage step-up unit (100) is configured to change the voltage step-up operation in accordance with whether a rotation mode of the motor (30) is the forward rotation mode or the reverse rotation mode.
Abstract:
A voltage increasing control circuit is connected to a power supply (12) to regulate power supplied to a load (13). The voltage increasing control circuit includes a voltage increasing unit (30) configured to increase voltage that is supplied from the power supply (12), and to supply the voltage to the load (13). A power estimation unit (21 b) determines whether or not to increase the power supplied to the load (13). A voltage control unit (21 a) controls the voltage increasing unit (30). When the power estimation unit (21 b) determines to increase the power supplied to the load (13), the voltage control unit (21 a) controls the voltage increasing unit (30) to increase the power supplied to the load (13).