CAJ | 학술논문

为了扩展速度估计范围，将高频注入法和自适应观测器相结合，在低速时，以高频注入法为主导作用，中高速时则平滑过渡到自适应观测器，从而扩展了永磁同步电机无速度传感器矢量控制系统的调速范围；同时，分析了死区对系统的影响，并提出了相应的补偿方案；最后，通过仿真验证了本方案的可行性。结果表明，所介绍方案可以实现全速度段的转速估计。
위료확전속도고계범위，장고빈주입법화자괄응관측기상결합，재저속시，이고빈주입법위주도작용，중고속시칙평활과도도자괄응관측기，종이확전료영자동보전궤무속도전감기시량공제계통적조속범위；동시，분석료사구대계통적영향，병제출료상응적보상방안；최후，통과방진험증료본방안적가행성。결과표명，소개소방안가이실현전속도단적전속고계。
To extend the scope of speed estimation,a vector control method based on speed adaptive observer without speed sensor and high frequency signal injection is proposed.When PMSM is working at low speed,high frequency signal is injected to esti-mate the speed.When PMSM is working at high speed,the adaptive observer proposed in this paper is used.Therefore,the esti-mated speed range is increased.Meanwhile,the influence of PWM dead time is studied.And the compensation method is also proposed.Finally,the validity of the proposed method is proved by simulation results.Results show that the proposed scheme can realize sensorless control of PMSM for wide-speed-range operation.