Delta Electronics, Inc. , Delta, founded in 1971, is a global leader in power and thermal management solutions. Its mission statement, “To provide innovative, clean and energy-efficient solutions for a better tomorrow,” focuses the company’s role in addressing key environmental issues such as global climate change. As an energy-saving solutions provider with core competencies in power electronics and in innovative research and development, Delta's businesses encompass Power Electronics, Energy Management, and Smart Green Life. Delta has sales offices worldwide with manufacturing facilities and R&D centers in Taiwan, China, USA, Europe, Thailand, Japan, Singapore, India, Mexico and Brazil.Throughout its history, Delta has received many global awards and recognition for its business milestones, innovative technology and corporate social responsibility.Since 2011, Delta has been selected as a member of the prestigious Dow Jones Sustainability™ World Index for 4 consecutive years.In 2014, Delta was ranked at the highest A-level of the Climate Performance Leadership Index of the Carbon Disclosure Project , and it was the only company from Greater China to be named to the CPLI from nearly 2,000 listed companies. Wikipedia.
Mathapati S.,Delta Electronics Inc |
Bocker J.,University of Paderborn
IEEE Transactions on Industrial Electronics | Year: 2013
The switching frequency of an inverter under direct torque control is mainly decided by the flux-and torque-controller output switching counts. It is known that, with fixed hysteresis bands, the switching frequency varies as the operating point changes. It is possible, however, to keep the switching frequency constant by the adaptation of hysteresis bands. The switching frequency is a function of both torque and flux bands. Different combinations of flux and torque bands can be used to achieve a desired switching frequency. However, for optimal control, one among the many available combinations has to be chosen. In this contribution, it is proposed to select the hysteresis bands based on the criterion of the minimum harmonic distortion in the motor currents for the required switching frequency. An analytical procedure is presented to calculate these optimal bands for the permanent-magnet synchronous motor. The analytical results were cross checked with simulation studies and validated by detailed experimentation. In order not to degrade the control performance by computational delay, a field-programmable-gate-array-based control platform is being used for implementation. © 2012 IEEE.
Delta Electronics Inc | Date: 2015-08-13
An intelligent air-conditioning controlling system at least comprises an intelligent controlling device, an air-conditioning, and a plurality of beacons respectively arranged at different zones of a space for sensing environment information in the space. The intelligent controlling device receives the environment information from the beacons, and determines if the space is a comfortable environment based on the environment information. If the entire space is determined an uncomfortable environment, the intelligent controlling device controls the air-conditioning to directly set a target temperature to a comfortable range. If only a specific zone of the space is determined the uncomfortable environment, the intelligent controlling device controls the air-conditioning to execute an adjusting operation in accordance with a position of the specific zone.
Delta Electronics Inc | Date: 2015-08-12
A fan control device for controlling a fan includes a communication-processing module, a fan-controlling module, and a detection module. The communication-processing module receives a fan-controlling instruction generated by an external system to generate a control signal, generates a detection signal according to a detection request of the external system, and provides state information for the external system. The fan-controlling module controls the speed of the fan according to the control signal and transmits a control result to the communication-processing module. The detection module detects the ambient state and the fan state of the fan according to the detection signal, and generates the state information according to the ambient information and the fan state. The communication-processing module, the fan-controlling module, and the detection module are physically separated from one another.
Delta Electronics Inc | Date: 2015-08-13
A ventilation apparatus includes a main body, an air entry and an air exit respectively arranged on two sides of the main body, a filter arranged behind the air entry, and a pressure sensor module located between the filter and the air exit, which senses pressure caused by air flowing inside the main body through the air entry and the filter. The pressure sensor module firstly senses pressure related data when the apparatus begins to start for initial data, and senses pressure related data continuously after the apparatus starts for working data, and transmits these data externally. An analysis monitor device computes a reference pressure offset value and a working pressure offset value according to the initial data and the working data, and compares the two pressure offset values for determining whether the filter needs to be replaced.
Delta Electronics Inc | Date: 2015-01-07
A package structure including: a first semiconductor device including a first semiconductor substrate and a first electronic device, the first semiconductor device having a first side and a second side, wherein at least part of the first electronic device being adjacent to the first side, and the first semiconductor device has a via-hole formed through the first semiconductor device, wherein the via-hole has a first opening adjacent to the first side; an interconnection structure disposed in the first semiconductor device, wherein the interconnection structure includes: a via structure disposed in the via-hole without exceeding the first opening; a first pad disposed on the first side of the first semiconductor device and covering the via-hole; and a second semiconductor device vertically integrated with the first semiconductor device.