Sensor-less Speed Control of Cylindrical Type PMSM Using Estimated Flux Linkages

Hanamoto, Tsuyoshi; Zidan, Hasan; Oguro, Ryuichi; Tanaka, Yoshiaki; Tsuji, Teruo

doi:10.1541/ieejias.120.877

Cited by 6 publications

(19 citation statements)

References 1 publication

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“…Because of the fluctuation of the estimate, a slight distortion occurs in the current response, and the speed response shows some oscillation. As follows from error equation (16), the theoretical error correction rate of the phase estimate with respect to its true value is exp(-|ω 2n |g 2 t) = exp(-9t), which is the reason for the slower phase lock.…”

Section: Characteristic At 3 Rad/smentioning

confidence: 99%

“…(3) Methods based on state observers include those dealing with the rotor's magnetic flux [6][7][8][9][10][11][12][13][14]20], and those dealing with the EMF or extended EMF [14][15][16][17][18][19][20]. Good performance across a wide speed range, including acceleration/deceleration, may be expected if an ideal state observer without any approximations can be designed.…”

Section: Introductionmentioning

confidence: 99%

“…Terms including the rotor's angular acceleration inevitably appear in a differential equation for the EMF proportional to the rotor's speed. This is avoided by assuming a constant speed [15][16][17][18][19][20]. As a result, the use of conventional state observers is restricted to steady-state operation without abrupt acceleration/deceleration.…”

Section: Introductionmentioning

confidence: 99%

“…Existing state observers have orders as high as fourth to eighth, based on the full-order state observer theory. Moreover, the observer gain is varied according to the estimated speed, and it is not an easy task to design an ideal high-order observer assuring stability in a wide operating range [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

New sensorless vector control methods based on a new minimum-order flux state observer in the ?D-module? for permanent magnet synchronous motors

Shinnaka¹

2005

Elect. Eng. Jpn.

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SUMMARYThis paper proposes new sensorless vector control methods that can be applied to both salient-pole and nonsalient-pole permanent magnet synchronous motors (PMSM). The proposed method estimates the phase of rotor flux by the "D-module observer," which is newly developed for sensorless vector controls of PMSM. The "D-module observer" has the following attractive features. (1) It is a new state observer requiring no additional approximation to the motor mathematical model. (2) It is a minimum-order state observer. (3) Observer gain guaranteeing proper estimation in a wide operating range except for singular zerospeed can be a simple constant, and can be easily designed.

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Section: Characteristic At 3 Rad/smentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

New sensorless vector control methods based on a new minimum-order flux state observer in the ?D-module? for permanent magnet synchronous motors

Shinnaka¹

2005

Elect. Eng. Jpn.

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“…Motor drive systems are widely used for the actuators in various industrial applications (1)- (6) . Especially, permanent magnet synchronous motors (PMSM) are frequently used because they have many advantages such as easy maintenance, small size and light weight structures.…”

Section: Introductionmentioning

confidence: 99%

RTLinux based speed control system of SPMSM with an online real time simulator

Hanamoto

Tsuji

2006

IEEJ Trans. IA

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Keywords: digital speed control, online real time simulator, RTLinux, SPMSM In this paper we propose the new method to achieve the experimental system with an online simulator using a RTLinux based PC system. This system consists of mainly two functions. One is the simulation part, where a motor mathematical model based on the three phase stationary coordinate is solved using a fourth order Runge-Kutta method in real time. The motor model includes non-linear operation, such as, trigonometric functions, square waves generated by a PWM inverter, dead time, and limiter circuits, so on. The other is the motor control part where conventional PI controllers and de-coupling controllers are programmed. The system is able to realize the motor control in 200 µs period and achieves the online real time simulator simultaneously.The configuration of the experimental system which includes the online real time simulator is shown in Fig. 1. The outputs of the real time simulator can be used for the control, and these variable is also corrected and modified using the real values. All of these functions are implemented in the computer, so it is easy to select the data. The simulation time is about 23 µs and it takes about 33 µs for the control in the system. From the results, it is enough to achieve the online real time simulation and the control at the same time. Figure 2 shows the experimental results of the control performance when the sampling interval of the pulse encoder is expanded. Here, the measured data is obtained by 20 ms period. While the output speed of the simulation is used in every 200 µs to the control instead of the measured value. Figure 2(a) shows the result when the speed is detected as an average values every 20 ms. The result of the step response is not desirable. On the other hand, Fig. 2(b) shows the result when the speed data of the online real time simulator is used for the control every 200 µs. And the simulation results is revised by the measured value only once in a hundred times. To compare these two results, Fig. 2(b) to be the satisfactory result. Fig. 1. Configuration of the proposed systemWe proposed the online real time simulator using RTLinux based PC system and achieve both the speed control system of SPMSM and the real time simulation simultaneously in 200 µs control period. From the experimental results, it is clear that our model is valid and the system parameters are identified correctly. The proposed method is useful of the analysis and control design of the motor drive system and it has the possibility of more precise control and sensorless control. MemberAhmad Ghaderi * Non-memberTeruo Tsuji * MemberAn online real time simulator for a RTLinux based speed control system of SPMSM (Surface Permanent Magnet Synchronous Motors) is proposed. For realization of the online real time simulator, a motor mathematical model based on the three phase stationary coordinate is solved using a fourth order Runge-Kutta algorithm in real time. The Runge-Kutta algorithm is required since the model includ...

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Potentiality of a new minimum‐order back‐EMF state observer taking acceleration into account for sensorless vector control of permanent‐magnet synchronous motors

Shinnaka

Saito²

2008

Electrical Engineering Japan

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This paper proposes new sensorless vector control methods for permanent-magnet synchronous motors (PMSMs), which are based on a new minimum-order back-EMF state observer taking acceleration into account, and examines potentiality of the improved back-EMF observer through experiments. Conventional sensorless vector control methods for PMSMs using an estimate of back-EMF are established under the assumption of constant speed or zero acceleration, and consequently cannot operate properly at modes requiring rapid speed change especially in low speed region. On the other hand, the proposed back-EMF observer has the following features: (1) it is a new back-EMF state observer taking acceleration into account and requiring no additional approximation to motor mathematical model; (2) it is a minimum-order state observer; (3) it utilizes motor parameters in the simplest manner; (4) it can be applied to both salient-pole and non-salient-pole PMSMs; (5) it can be realized in both rotor and stator reference frames. Detailed designs and analyses for the improved state observer and the sensorless vector control systems in both rotor and stator reference frames are given. In relation to the sensorless vector control systems, this paper newly proposes a double-integral-type PLL method and an integral-feedback-type acceleration/speed estimation method. Their potentialities are examined through experiments.

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Sensor-less Speed Control of Cylindrical Type PMSM Using Estimated Flux Linkages

Cited by 6 publications

References 1 publication

New sensorless vector control methods based on a new minimum-order flux state observer in the ?D-module? for permanent magnet synchronous motors

New sensorless vector control methods based on a new minimum-order flux state observer in the ?D-module? for permanent magnet synchronous motors

RTLinux based speed control system of SPMSM with an online real time simulator

Potentiality of a new minimum‐order back‐EMF state observer taking acceleration into account for sensorless vector control of permanent‐magnet synchronous motors

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