ON-OFF' Current Control Method with Frequency Limiter and Operating Characteristics of Brushless DC Motors Using Resolver

리졸버를 사용한 브러쉬 없는 직류전동기의 운전특성과 주파수 제한기를 가진 'ON-OFF'전류제어 방식

Although the structure of the brushless DC motor is similar to the one of the permanent magnet synchronous motor, its operating characteristics are the same as those of the permanent magnet DC motor. This is the reason that the commutators and brushes in the permanent magnet DC motor can be replaced by the power semiconductor devices and rotor position sensors for the brushless DC motor. In this paper, a current control method is presented to make a sinusoidal current waveform for constant torque generation and the operating characteristics of the brushless DC motor using the resolver as the rotor position sensor is also presented and experimented.