Purpose of the development: PCHIT - frequency converter based on current inverter. Frequency inverters are designed to control PCHIT speed motors with squirrel cage rotor voltage, 6, 10 kV power from 630 kW to 1000 kW and by special order at large capacities.

Recommended application field: The most common areas of application of frequency converters PCHIT are: - Oil and gas industry; - Metallurgy; - Mining. - Utilities (pumping stations, treatment plants); - Energy (nutritional and network pumps); - Machine (fans, conveyors); - Car and motor (diesel engine test stands); - The chemical industry (conveyors, feeders, process pumps).

Technical characteristic: Main technical characteristics of PCHIT (H product can be taking into account the support and fan belts): Product type, engine power, mW Dimensions Length (front), mm Depth, mm Height, mm PCHIT - 630 630 2 500 1 000 2 500 PCHIT - 800 800 2500 1000 2500 PCHIT - 1000 1 000 2 500 1 000 2 500

Advantages over analogues: Inverters PCHIT provide: - Infinitely adjustable speed within a given range, or stabilization process parameters of the drive; - Soft start and brake motors with variable speed; - Limit current and torque in dynamic modes; - Recovery of braking energy to the mains supply. High computing power microprocessor and original control algorithms allow actuators based PCHIT following quality control characteristics: - Measuring range of speed control 1:20 in the absence of special devices, tachometer on the motor shaft and 1:50 if universal tachometer devices. When starting, braking, reverse minimum absolute rate of zero; - PWM - control motor current in the output frequency of 5 Hz and below. This type of control significantly reduces engine speed ripple at low frequencies; - Switches to the optimal function of the frequency of rotation of the engine control laws: - Mode of constant flux of the motor (provides high dynamic performance of the drive); - Mode of constant absolute slip of the motor regardless of the size of the motor. Such a regime minimizes losses in the engine; - Two-zone speed control (mode U / f = const and U = const) with the possibility of increasing the engine speed to a value of 1,4 n n; - Automatic restart after a momentary power failure and auto pickup engine "on the fly."

The development stage readiness: Introduced in production

Technical and economic effect: PCHIT available standard performance for various operating voltages ranging from 400 kW to 2000 kW, and by special order at more power.

Description of the development:
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The list of equipment in the electric complete PCHIT: - Step-down transformer or current limiting rector; - Shield SCHSP power converter; - Smoothing reactors Frosya; - Output matching transformer (if necessary). The control system provides PCHIT: - Automatically adjusts settings based on the actual controls the motor and drive; - Self-diagnosis system of management; - Remembering the reasons tripping and indication of the cause; - Storage of information on pre-emergency state and postavariynom converter to output this Information on the computer display; - Archiving defined modes and events in the operation; - Manage and information link to the controller over a high-level standard serial interface (RS 232, RS 485). PCHIT has the following protections: - Against harmful over-current; - From both internal and external (load) of short-circuits - The surge in the power section; - From extinction or undervoltage own needs.

corresponds technical description
Ready for implementation

Possibility of transfer abroad:
Licence's sale
Technological document's sale
Creation of joint enterprise
Realization of finished commodity

Photo

Country Ukraine

For additional information turn to:
E-mail: gal@uintei.kiev.ua