Abstract:
PROBLEM TO BE SOLVED: To provide a slotless motor which can combine two or more unit coil bodies easily and correctly. SOLUTION: Two unit coil bodies facing each other are combined in a circular form with different inner diameters to constitute two or more circular coil bodies. Each circular coil body with a smaller inner diameter is inserted inside the circular coil body with a larger inner diameter sequentially out of two or more circular coil bodies to constitute a stator coil. Then, the respective sums of horizontal widths of two or more unit coil bodies of U phase, V phase and W phase are made equal, so the intensities of magnetic fields of the U phase, V phase and W phase are balanced and the stator can be manufactured correctly in response to the designer's intent, and the assembly process can also be simplified significantly. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a failure detection method of a parallel coil permanent magnet motor, and to provide a supporting system therefor.SOLUTION: A failure detection method of a parallel coil permanent magnet motor includes a step for driving a parallel coil motor based on a predetermined current command value, a step for detecting the current vector of the motor, a step for calculating a current compensation value for removing the reverse-phase component of the motor based on the current vector, a step for providing the current compensation value to a reverse-phase current control machine, a step for calculating the failure phase of a parallel coil motor and the degree of failure by using a failure model to which the output from the reverse-phase current control machine, and the induction flux variation of a specific slot of a specific phase of the parallel coil motor failed and other slot of the same phase as the specific phase are applied, and an application step for applying a current command value to which the failure phase and the degree of failure thus calculated are applied.
Abstract:
PROBLEM TO BE SOLVED: To provide a failure detection method of a series coil permanent magnet motor, and to provide a supporting system therefor.SOLUTION: A failure detection method of a series coil motor includes steps S101, 103 for driving a series coil motor based on a predetermined current command value, a step S105 for detecting the phase current vector of a motor, a step S107 calculating a current compensation value for removing the reverse phase (negative sequence) component of the motor based on the phase current vector, a step S109 for providing the current compensation value to a reverse phase current control machine, a step S111 for calculating the failure phase and the degree of failure of the series coil motor by using a failure model to which the output from the reverse phase current control machine, and the induction flux variation of a specific slot of a specific phase of the series coil motor failed and other slot of the same phase as the specific phase are applied, and an application step for applying a current command value to which the failure phase and the degree of failure thus calculated are applied.
Abstract:
본발명은파워스위치의스위칭특성분석장치및 방법이개시된다. 본발명의스위칭특성분석장치는파워스위치, 인덕터및 커패시터가구비된 Arm 회로를복수개포함하는 Arm 회로부, Arm 회로마다구비된파워스위치와인접한위치에공용으로연결되어각각의파워스위치에동일한온도의열을전달하는히팅플레이트및 파워스위치의스위칭및 히팅플레이트의온도를제어하여파워스위치및 게이트드라이브의특성분석을하는제어부를포함한다.
Abstract:
PURPOSE: A short-circuit current detection circuit is provided to reduce the number of parts for detection by detecting short-circuit current of an inverter without connecting a separate watt resistance. CONSTITUTION: A short-circuit current detection circuit(100) detects voltage resulting from inductance components existing in positive or negative potential wiring of a three-phase inverter(15). The short-circuit current detection circuit comprises an amplification unit(110) and a comparison unit(120). The amplification unit amplifies the detected voltage to be applied to the comparison unit. The comparison unit compares the amplified voltage with reference voltage and outputs an off signal for a semiconductor power switching element of the three-phase inverter to a CPU(30).
Abstract:
A rotary actuating device having a unit for compensating a friction force is provided to control actuating force to rotate a rotary plate by increasing or decreasing an amount of the friction force of each micro moving unit for the rotary plate. A rotary actuating device having a unit for compensating a friction force includes a base(100), a rotary plate(110), a plurality of micro moving units(120), a variable supporting unit(130), and a supporting plate(131). The base(100) is a plate type, supports other components, and forms a lower part of the rotary actuating device. The rotary plate(110) is rotatably installed on an upper part of the base(100). The plurality of micro moving units(120) are installed on a lower plane of the rotary plate(110). The variable supporting unit(130) supports the plurality of micro moving units(120) and controls for each micro moving unit to have uniform friction force for the rotary plate(110). The supporting plate(131) has an upper plane where the plurality of micro moving units(120) are installed and includes through holes(131a) upward and downward on at least three points thereof.
Abstract:
PURPOSE: A hall sensor board for motor stator core sheet and a BLDC(Brushless DC) motor thereof are provided to fix the hall sensor board to the stator by covering the edge area of the hall sensor board. CONSTITUTION: A BLDC includes a stator(20), a rotor(10), a hall sensor board(30), hall sensor(40), and a case(50). The hall sensor board is directly fixed to the stator. The hall sensor is arranged to one side of the hall sensor board to sense leakage flux of the rotor. The hall sensor board is manufactured in a core sheet type.