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This paper presents an adaptive-linear-neuron (ADALINE)-based dead-time compensation method for vector-controlled permanent-magnet synchronous motor drives. The proposed strategy is achieved by suppressing the sixth-order current harmonics in the dq-axes synchronous reference frame. Four ADALINEs are employed in the proposed algorithm. Two ADALINEs are used for estimating the sixth-order harmonic...
This paper introduces vector control of six-phase PMSMs with selective harmonic elimination PWM (SHEPWM) technology. Mathematic model of six-phase PMSM is given. Then relation between harmonic currents and voltages is derived. Harmonic current responses of salient pole six-phase PMSMs and non-salient pole six-phase PMSMs are different by applying the same harmonic voltage excitation. Besides, the...
This paper proposes a single inductor dual output (SIDO) DC-DC Converter with exclusive control circuit. We propose two kinds of SIDO converter: a buck-buck and a boost-boost converter. We have simulated and experimented with exclusive control method. Dual voltage outputs are controlled exclusively, using error voltage feedback. This approach requires no current sensors and does not depend on the...
This paper introduces selective harmonic elimination PWM (SHEPWM) technology applied in PMSMs. According to model of PMSMs, relation between harmonic currents and voltages is derived. From this relation, selection principle of SHEPWM is different for salient pole PMSMs and non-salient pole PMSMs. Besides, the method of smooth transition between different SHEPWMs is introduced. Simulations and experiments...
In high power AC speed regulation systems, frequency of inverter is wide and frequency of switching is limited. In this paper, the PWM strategy for vector control of induction motor in medium voltage high power is introduced. Asynchronous modulation and multi-step synchronous modulations are concluded in the PWM strategy. In synchronous modulations, selective harmonic elimination PWM (SHEPWM) is employed...
Since selective harmonic elimination PWM (SHEPWM) was proposed, the calculation of switching-angle curves has been a hot research point. Up to now, many approaches have been applied and multiple solutions of SHE equations have been obtained. Multiple sets of switching-angle curves provide SHEPWM strategies, which are often adopted in the control system of induction machines for railway driving, more...
The design of A DC motor bodies for the implementation of three close loop control system is expatiated in this paper. On the basis of the speed regulating system in DC motor, the parameters of the location regulator are designed and adjusted based on the speed regulator and the current regulator using engineering design method in this system. The system is simulated in MATLAB. The simulation results...
With the demands of the propulsion systems, medium voltage high power AC drives are required. In high power AC drives, the switch frequency of the devices has to be limited in order to reduce the loss of the power semiconductor devices, torque ripple and electromagnetic interference. In this paper, a proposed drive control system with selective harmonic elimination PWM (SHEPWM) for induction motor...
Selected harmonics elimination PWM (SHEPWM) strategy adopted in railway driving system promises to have better performance than other PWM strategies, such as SVPWM and SPWM. However, since SHEPWM was proposed, the calculation of switching-angle curves has been a hot research point. Up to now, many approaches have been applied and multiple solutions of SHE equations have been obtained. This paper presents...
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