Abstract:
Le dispositif d'alimentation pour moteur électrique à courant alternatif monophasé à deux enroulements, comprend un générateur de courant travaillant par modulation de largeur d'impulsion (PWM, T1, T2) engendrant dans le moteur un courant alternatif. Le générateur est relié à un seul (PS; ST; RO) des enroulements du moteur. L'autre enroulement (PP; RO; ST) est relié directement à la source de courant alternatif monophasé (P, N). Le générateur est agencé pour que la fréquence fondamentale du courant issu du générateur soit égale à la fréquence de la source de courant alternatif.
Abstract:
An inverter device achieving a high input power-factor while restraining higher harmonics to be low is provided by a simple circuit structure, in which a pulsating DC voltage supplied through a rectifier is provided through an inductor to a smoothing condenser and to an inverter circuit section connected to output ends of the rectifier to be in parallel therewith, a smoothed DC voltage from the smoothing condenser is supplied through the inductor to the inverter circuit section, and a high frequency voltage is provided out of the device in response to ON and OFF operation of a switching means in the inverter circuit section.
Abstract:
Zur Drehzahlsteuerung eines als Zentrifugenantrieb dienenden Wechselstromantriebs in Form eines Kondensatormotors (16) ist dieser im Brückenzweig eines einphasigen Wechselrichters (1) geschaltet. Der Brückenzweig ist an seinen Enden jeweils mit den Mittelpunkten einer Reihenschaltung zweier Kondensatoren (9, 10) und zweier Feldeffekt-Transistoren (7, 8) geschaltet, wobei diese Reihenschaltungen zueinander parallel geschaltet und am Ausgang eines am Wechselspannungsnetz (3, 4) betriebenen Gleichrichters (2) angeschlossen sind; während des Betriebes werden die Kondensatoren (1, 10) mittels Ansteuerung der Feldeffekt-Transistoren (7, 8) wechselweise über den Kondensatormotor (16) entladen, wobei die Ansteuerung über einen als Impulsgenerator dienenden Mikroprozessors (30) erfolgt.
Abstract:
PURPOSE: A motor control system and a designing method thereof are provided to reduce the number of motor drive ICs(Integrated Circuit) in case motors are sequentially operated or an application which does not need to simultaneously operate controlling motors, thereby reducing manufacturing costs. CONSTITUTION: A motor control system includes a first motor(201), a second motor(202) asynchronously operated with the first motor, and a motor drive IC shared by being connected to the first and the second motors for controlling the first and the second motors.
Abstract:
A motor driving device is provided to reduce intervals between elements by integrating peripheral circuits of the motor driving device on a PCB(Printed Circuit Board) and improve the reliability of noise by being electrically connected with patterns on the PCB. A motor driving device includes a power supply circuit(100) and a control unit(200). The power supply circuit includes a rectification circuit(102) and a three-phase-full bridge circuit(104). The rectification circuit has a plurality of rectification diodes to rectify three-phase motor driving power rectified through a filter(101). The three-phase-full bridge circuit receives the three-phase motor driving power rectified through the rectification circuit by each of the three phases and supplies a motor with the received driving power. The control unit includes a power supply unit(201), a gate driving circuit(202), a protection circuit(203), a controller(300), and a photo coupler(204). The power supply unit receives DC power from the outside and transforms the DC power into power needed in a circuit to output the transformed power. The gate driving circuit drives the three-phase-full bridge circuit with the power supplied from the power supply unit. The protection circuit checks whether the power supplied to the motor is abnormal voltage. The controller controls the driving of the power supply unit based on the check result of the protection circuit. The photo coupler electrically insulates the power supply unit. All the components are electrically connected by patterns printed on first and second PCBs.
Abstract:
본 발명은 모터 구동 장치에 관한 것이다. 본 발명에 따른 모터 구동 장치는 노이즈필터를 거친 교류전원을 직류전원으로 변환하는 정류부와, 상기 정류부로부터 분기접속되어 상기 변환된 직류전원을 PWM스위칭하여 복수의 모터를 구동하기 위한 가변주파수교류전원으로 변환하는 복수의 인버터부를 가지며, 상기 정류부와 상기 각 인버터부 사이에 마련되어 상기 정류부에서 분기된 상기 직류전원의 양단 사이에 상호 직렬로 접속되는 한 쌍의 콘덴서를 갖는 노이즈방지부와, 상기 각 모터의 기생콘덴서를 통하여 전달되는 공통모드 노이즈를 상기 각 노이즈방지부의 콘덴서쌍 사이의 직류중성점으로 전송하는 회귀부를 포함하는 것을 특징으로 한다. 이에 의하여 인버터부를 갖는 모터 구동 장치에서 장치 외부로 방출되는 노이즈 뿐만 아니라 장치 내부에서 발생되는 노이즈를 최소화하며, 발생된 노이즈가 주변회로에 미치는 영향을 줄일 수 있다.
Abstract:
고조파를 낮게 억제하면서 높은 입력역률을 갖는 인버터장치가 제공되는데 이 때 정류기를 통해 공급된 맥동 DC전압이 인턱터를 통해 평활화 콘덴서 및 정류기의 출력단에 병렬 연결된 인버터회로부에 제공되고, 평활화 콘덴서로부터 평활화 된 DC전압이 인덕터를 통해 인버터 회로부에 제공되며, 고주파 전압이 인버터회로부내 스위칭 소자의 ON/OFF 동작에 따라 본 장치로부터 제공된다.