Real-time rotor bar current measurements using Bluetooth technology for a brushless doubly fed machine (BDFM)

2006 12th International Power Electronics and Motion Control Conference

Wan

Abdi-Jalebi

et al. 2006

The Brushless Doubly-Fed Machine (BDFM) is attractive for use in wind turbines, especially offshore, as it offers high reliability by virtue of the absence of brushgear. Critical issues in the use of the BDFM in this role at a system level include the appropriate mode of operation, the sizing of associated converter and the control of the machine. At a machine level, the design of the machine and the determination of its ratings are important. Both system and machine issues are reviewed in the light of recent advances in the study of the BDFM, and preliminary comparisons are made with the well-established doubly fed wound rotor induction generator.

Section: Parameter Extractionmentioning

confidence: 99%

The BDFM as a Generator in Wind Turbines

2006 12th International Power Electronics and Motion Control Conference

Wan

Abdi-Jalebi

et al. 2006

“…The authors have constructed a frame size 180 machine which has been used to study control and measurement aspects of the BDFM [13][14][15]. The authors have more recently reported on the performance of alternative rotor configurations [16].…”

Section: Introductionmentioning

confidence: 99%

“…In the cascade mode the speed varies with load, but (1) and (5) still apply. Table 1 gives the physical data for the prototype machine used throughout this and the work described in [13][14][15][16]. The machine is shown in Fig.…”

Section: Introduction To Bdfm Operationmentioning

confidence: 99%

Equivalent circuit for the brushless doubly fed machine (BDFM) including parameter estimation and experimental verification

Roberts

IEE Proc., Electr. Power Appl.

Tavner

et al. 2005

Self Cite

158

147

Experimental results from a frame size 180 brushless doubly fed (induction) machine (BDFM) fitted with four rotor designs are presented. The machine is intended for use as a variable speed generator, or drive. A per phase equivalent circuit for the machine has been developed and a method of obtaining parameters for the circuit is described. Expressions for the torque as a function of speed have been derived and predictions of machine performance in both self-cascaded and synchronous (doubly fed) modes have been verified experimentally. The work illustrates the link between rotor equivalent circuit parameters and machine performance and a comparison between rotor designs has been made.

“…The recent growth of variable speed drives (VSD) has led to a need for a device which can measure rotor data wirelessly. A system currently exists [1] [2] which measures rotor signals and transmits the data using Bluetooth. However, this system is battery powered which limits its practicality as batteries are bulky and require regular recharging.…”

Section: Introductionmentioning

confidence: 99%

Wireless energy harvesting for rotor instrumentation in electrical machines

Tatlow

8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016)

Abdi

2016

In order to perform experiments on electrical machines, it is desirable to measure rotor parameters such as currents and temperatures. A Bluetooth module have been developed which sends data from the rotor, however this module is battery powered, and therefore the duration of the tests is limited. This paper presents a solution to this problem, by developing a rotor-mounted power supply system which can harvest energy from leakage magnetic flux inside the machine, by fixing an external loop to the rotor and making use of induced voltages in the loop. A full-bridge rectifier, boost converter and battery charging module was developed to supply sufficient power to the Bluetooth module.