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Here you see our references regarding: Propulsion Technology



Project details: OEM Dual frequency inverter

 

 

 

Industries
  • Mechanical Engineering, Propulsion Technology

 

Technology fields
  • Propulsion Technology, Bus Systems and Radio, CAE; Measurement, Control and Regulation Technology

 

Project requirements
  • The aim of the project was the development and subsequent production of a highly efficient, rotational speed- and torque stable (vector control), fanless dual frequency inverter with 1 kW continuous power and 50% overload capability per engine. Also appreciable are the rough area of application (among other things, dirt, conductive dust) as well as the additional integrated peripherals (sensors, actuators, stepper motor, bus connection). The inverter can be operated with 230V AC power supply and optional equipped with a PFC (Power Factor Correction). Thereby lower system perturbations and also the wide voltage range (90V-264V) can be realized.

 

Services of KNESTEL
  • Potential analysis, target price estimate, project management, requirements specification, project planning, development of software and hardware, electrical and mechanical construction, EMC testing, prototyping, serial production

 

Facts / Highlights
  • PFC: Power Factor Correction
  • Fanless, completely closed
  • Synthesis of various propulsion technologies
  • High price advantage to standard inverters
  • Minimal training required by the service employees due to compact operating software

 

Possible applications
  • Motor control: highly accurate and efficient electric
    propulsion
    • DC, BLDC (Brushless DC), EC, 1 ~ AC, asynchronous threephase motors, permanently excited synchronous machines
    • Power range: a few watts up to several 100 kW
    • Voltage Range: DC low voltage (e.g. 24V) over 230V AC to 660V AC
  • Engine and component simulation: An elctrical motor is simulated realistically in a real-time simulation in software on a motor-simulation model.
  • Battery simulation: for this, battery technologies are simulated realistically in a real-time simulation on a battery simulation model

» as PDF-Download

 

Project details: Self-sufficient machine control module with bus connection

 


 

 

Industries
  • Mechanical Engineering, Propulsion Technology

 

Technology fields
  • Propulsion Technology, Software Development, Bus Systems and Radio, CAE, Intuitive Input Devices; Measurement, Control and Regulation Technology

 

Project requirements
  • The aim of the project was the development of a motor control for two BLDC- and one stepper motor. Various interfaces, inputs for sensors and outputs for actuators as well as the usability with keyboard were further requirements. In addition, a pressure sensor in a very limited installation space, fanless operation and a CANopen bus connection is realized

 

Facts / Highlights
  • Two stages for three-phase motors up to 350W and a stepper motor stage for bipolar stepper motors up to 150W with encoder inputs
  • 2 CAN-interfaces (galvanically isolated)
  • RS485 and RS232 interface
  • Integrated pressure sensor
  • Precisely tailored to the application
  • Modular, compact, easy configuration

 

Services of KNESTEL
  • Specification of Requirements, project planning, development of software and hardware, EMC testing, serial production

 

Possible applications
  • Machinery and plant construction
  • General propulsion technology
  • Automation technology
  • Distributed systems

 

» as PDF-Download

 

Project details: Medical technology compliant OEM servo controller with Power Factor Correction (PFC)

 

 

Industries
  • Medical Technology, Mechanical Engineering, Propulsion Technology

 

Technology fields
  • Propulsion Technology

 

Project requirements
  • The aim of the project was the development of a servo controller with input-side Power Factor Correction (PFC) for sensorless control of permanent-magnet synchronous motor with subsequent production. Special challenge here was the fulfillment of conformity for medical technology products in accordance with the guidelines of EN 60601.

 

Services of KNESTEL
  • Potential analysis, target price estimate, project management, requirements specification, project planning, development software and hardware, electrical and mechanical construction, EMC testing, prototyping, serial production

 

Facts / Highlights
  • Wide-range voltage input by PFC
  • Medicine technically standards-compliant leakage (<0.5 mA) and electromagnetic compatibility (EMC) without isolating transformer
  • Operation of a synchronous motor with 22,000 U/min
  • Sensorless control by observer-based approach
  • Limiting the max. performance by overriding control
  • Parameterization via smartphone / tablet / WiFi
  • Co-processor for PLC functionality
  • High efficiency
  • Fieldbus connection

 

Possible applications
  • Customized propulsion solutions in all sectors and areas with wide-range power supply and the highest standards of EMC, system perturbation and leakage currents.

» as PDF-Download

 

Project details: Blinds control with access to the control system of the building

 

 

 

Industries
  • Facility Management, Propulsion Technology

 

Technology fields
  • Propulsion Technology, Testing and Measuring Technology

 

Project requirements
  • The aim of the project was the development and production of a modular expandable controller in order to regulate 64 blinds motors simultaneously. Operation is via a building control system as well as manually via digital inputs (external push-button). The control unit is parametrized via a serial interface. In order to determine the exact position of the motors, an encoder is provided.

 

Services of KNESTEL
  • Potential analysis, target price estimate, project management, requirements specification, project planning, development of software and hardware, electrical and mechanical construction, EMC testing, prototyping, serial production

 

Facts / Highlights
  • Connection to the building control system via Modbus
  • Control up to 64 motors simultaneously
  • RS485 interface
  • Encoder to determinate exactly the location of the motors
  • Status display via 3-fold LED (red / yellow / green)
  • Modular electronics housing with T-BUS connector

 

Possible applications
  • blinds / shutters
  • garage doors
  • window / skylight
  • doors

» as PDF-Download

Project details: Fanless, waterproof dual frequency converter conforming to IP67

 

 

 

Industries
  • Mechanical Engineering, Propulsion Technology

 

Technology fields
  • Propulsion Technology, Software Development; Measurement, Control and Regulation Technology

 

Project requirements
  • The aim of the project was the development of a waterproof dual frequency converter for the most adverse conditions, in order to control a shock absorber test bench in car workshops. Due to the use under particularly harsh environmental conditions - rain water, oil or other fluid loss - the housing had to correspond IP67. This meant that the cooling had to be realized without a fan or ventilation slots. Additional requirements were a quick and physical verification of the shock absorbers, an automatic test start after loading the test panels, a fully automatic test sequence, as well as the possibility of frequency controlled noise detection.

 

Services of KNESTEL
  • Potential analysis, target price estimate, project management, requirements specification, project planning, development of software and hardware, electrical construction, EMC testing, prototyping, serial production

 

Facts / Highlights
  • waterproof housing IP67
  • fully automatic test sequence
  • High-precision measurement principle over Lehr's damping measure
  • Search function for background noises on the vehicle

 

Possible applications
  • agricultural engineering
  • construction machines
  • test benches
  • from liquids or weather unprotected locations

» as PDF-Download

Project details: Battery powered low voltage converter with SiL-2 wireless network

 

 

Industries
  • Mechanical Engineering, Propulsion Technology

 

Technology fields
  • Propulsion Technology, Software Development, Bus Systems and Radio; Measurement, Control and Regulation Technology

 

Project requirements
  • The aim of the project was the development and production of engine and device control for a Mobile Column Lift in various deployments and environmental conditions. A particular challenge is the suitability for especially heavy loads, but also the everyday operation of garages or breakdown services under changing environmental influences. The individual columns of the lifting platform are both, wireless with battery and SIL-2 compliant communication via radio, as well as stationary operated with power supply and CAN bus. Due to the necessary electronic synchronization control in uneven load distribution and to the applicable safety monitoring of the possibly radio-operated system, the functional safety of the composite poses a major challenge. In battery mode is a simultaneous operation of up to eight columns, in network operation of up to twelve columns possible. Each column is equipped with an operating element.

 

Services of KNESTEL
  • Potential analysis, target price estimate, project management, requirements specification, project planning, development of software and hardware, electrical construction, EMC testing, prototyping, serial production

 

Facts / Highlights
  • Spray and condensation-proof control technology and supply unit
  • Functional safety SIL-2 (IEC 61508) even with wireless networking of pillars
  • Power supply via battery (48V DC), possible motor currents up to 100A
  • Networking via CAN-bus or radio

 

Possible applications
  • Autonomous, battery-powered systems
  • Mobile lifting and transport vehicles
  • Electric drives of all kinds

» as PDF-Download

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Knestel Firmengruppe
Osterwalder Straße 12
D-87496 Hopferbach

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Telefax: +49 (0) 83 72 - 23 84
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Who we are

Specialization:Development and manufacture of electronic custom solutions and small machines
Head office:Hopferbach. No metropolis, but a forge of excellent ideas.
Experience since:1980
Cross-sector working.
Main weakness:a notorious lack of space.
Main strength:inventive talent.

Field of business activity

  • Propulsion Technique
  • Automotive
  • Facility Management
  • Engineering
  • Medicine
  • Shooting Sports

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